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GNU LIBRARY GENERAL PUBLIC LICENSE
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This is the file COPYING.modifiedLGPL, it applies to all units of the
BGRABitmap library.
These files are distributed under the Library GNU General Public License
(see the file COPYING.LGPL) with the following modification:
As a special exception, the copyright holders of this library give you
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If you didn't receive a copy of the file COPYING.LGPL, contact:
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USA

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Test for BGRABitmap functions - v2.0
This code is under modified LGPL (see COPYING.modifiedLGPL.txt). This means that you can link this library inside your programs for any purpose. Only the included part of the code must remain LGPL.
If you make some improvements to this library, please notify here:
http://www.lazarus.freepascal.org/index.php/topic,12037.0.html
Contact : circular at operamail.com

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<?xml version="1.0" encoding="UTF-8"?>
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<Filename Value="..\testbgrafuncold\umain.pas"/>
<ComponentName Value="FMain"/>
<HasResources Value="True"/>
<ResourceBaseClass Value="Form"/>
<TopLine Value="7"/>
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<UsageCount Value="7"/>
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<IsPartOfProject Value="True"/>
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</Unit63>
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<Filename Value="..\bgrabitmap\bgrapolygonaliased.pas"/>
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</Units>
<JumpHistory Count="1">
<Position1>
<Filename Value="umain.pas"/>
<Caret Line="25" Column="46" TopLine="20"/>
</Position1>
</JumpHistory>
</ProjectOptions>
<CompilerOptions>
<Version Value="11"/>
<PathDelim Value="\"/>
<SearchPaths>
<IncludeFiles Value="$(ProjOutDir)"/>
<UnitOutputDirectory Value="lib"/>
</SearchPaths>
<Parsing>
<SyntaxOptions>
<UseAnsiStrings Value="False"/>
</SyntaxOptions>
</Parsing>
<Linking>
<Options>
<Win32>
<GraphicApplication Value="True"/>
</Win32>
</Options>
</Linking>
</CompilerOptions>
<Debugging>
<Exceptions Count="3">
<Item1>
<Name Value="EAbort"/>
</Item1>
<Item2>
<Name Value="ECodetoolError"/>
</Item2>
<Item3>
<Name Value="EFOpenError"/>
</Item3>
</Exceptions>
</Debugging>
</CONFIG>

23
bgrabitmap/test/testbgrafunc/testbgrafunc.lpr Normal file
View File

@@ -0,0 +1,23 @@
program testbgrafunc;
{$mode objfpc}{$H+}
uses
{$IFDEF UNIX}{$IFDEF UseCThreads}
cthreads,
{$ENDIF}{$ENDIF}
Interfaces, // this includes the LCL widgetset
Forms, umain, utest1, utest2, utest3, utest4, utest5, utest6, utest7, utest8,
utest9, utest10, utest11, utest14, utest15, utest16, utest17, utest18,
utest19, utestback, utestpacrect, etpackage, utest22, utest23, utest24,
utexture, utest25, utest26, ucube3d, utest27, utore3d, utest31, utest32,
utest33;
{$R *.res}
begin
Application.Initialize;
Application.CreateForm(TFMain, FMain);
Application.Run;
end.

68
bgrabitmap/test/testbgrafunc/ucube3d.pas Normal file
View File

@@ -0,0 +1,68 @@
unit ucube3d;
{$mode objfpc}
interface
uses
Classes, SysUtils, BGRAScene3D, BGRABitmapTypes;
type
{ TCubeScene3D }
TCubeScene3D = class(TBGRAScene3D)
cube: IBGRAObject3D;
constructor Create;
procedure SetCubeTexture(ATexture: TBGRACustomBitmap);
procedure SetCubeTexture(ATexture: IBGRAScanner; tx,ty: single);
end;
implementation
{ TCubeScene3D }
constructor TCubeScene3D.Create;
var v: arrayOfIBGRAVertex3D;
begin
inherited Create;
cube := CreateObject;
v := cube.MainPart.Add([-1,-1,-1, 1,-1,-1, 1,1,-1, -1,1,-1,
-1,-1,+1, 1,-1,+1, 1,1,+1, -1,1,+1]);
cube.AddFace([v[0],v[1],v[2],v[3]],BGRA(255,0,0));
cube.AddFace([v[4],v[5],v[1],v[0]],BGRA(128,160,255));
cube.AddFace([v[7],v[6],v[5],v[4]],BGRA(96,224,0));
cube.AddFace([v[3],v[2],v[6],v[7]],BGRA(192,0,255));
cube.AddFace([v[1],v[5],v[6],v[2]],BGRA(255,192,0));
cube.AddFace([v[4],v[0],v[3],v[7]],BGRAWhite);
cube.MainPart.Scale(20);
AmbiantLightness := 0.5;
AddDirectionalLight(Point3D(1,1,1),1,-0.5);
end;
procedure TCubeScene3D.SetCubeTexture(ATexture: TBGRACustomBitmap);
begin
SetCubeTexture(ATexture,ATexture.Width-1,ATexture.Height-1);
end;
procedure TCubeScene3D.SetCubeTexture(ATexture: IBGRAScanner; tx, ty: single);
var
i: Integer;
begin
for i := 0 to cube.FaceCount-1 do
with cube.Face[i] do
begin
Texture := ATexture;
TexCoord[0] := PointF(0,0);
TexCoord[1] := PointF(tx,0);
TexCoord[2] := PointF(tx,ty);
TexCoord[3] := PointF(0,ty);
end;
end;
end.

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object FMain: TFMain
Left = 456
Height = 301
Top = 194
Width = 650
Caption = 'BGRABitmap functions test'
ClientHeight = 301
ClientWidth = 650
OnCreate = FormCreate
OnDestroy = FormDestroy
OnPaint = FormPaint
LCLVersion = '1.6.0.4'
object Panel1: TPanel
Left = 0
Height = 62
Top = 0
Width = 650
Align = alTop
ClientHeight = 62
ClientWidth = 650
TabOrder = 0
object Label_TestName: TLabel
Left = 1
Height = 39
Top = 1
Width = 648
Align = alTop
AutoSize = False
Caption = 'Label_TestName'
Font.Height = -12
Layout = tlCenter
ParentColor = False
ParentFont = False
WordWrap = True
end
object Button_First: TButton
Left = 7
Height = 22
Top = 37
Width = 75
Caption = 'First'
OnClick = Button_FirstClick
TabOrder = 0
end
object Button_Prev: TButton
Left = 88
Height = 22
Top = 37
Width = 75
Caption = '<< Prev'
OnClick = Button_PrevClick
TabOrder = 1
end
object Button_Next: TButton
Left = 168
Height = 22
Top = 37
Width = 75
Caption = 'Next >>'
OnClick = Button_NextClick
TabOrder = 2
end
object Button_Last: TButton
Left = 248
Height = 22
Top = 37
Width = 75
Caption = 'Last'
OnClick = Button_LastClick
TabOrder = 3
end
end
object Timer1: TTimer
Interval = 30
OnTimer = Timer1Timer
left = 568
top = 96
end
end

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unit umain;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
StdCtrls, ExtCtrls, utest, EpikTimer;
type
{ TFMain }
TFMain = class(TForm)
Button_First: TButton;
Button_Last: TButton;
Button_Next: TButton;
Button_Prev: TButton;
Label_TestName: TLabel;
Panel1: TPanel;
Timer1: TTimer;
procedure Button_LastClick(Sender: TObject);
procedure Button_NextClick(Sender: TObject);
procedure Button_FirstClick(Sender: TObject);
procedure Button_PrevClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormPaint(Sender: TObject);
procedure Timer1Timer(Sender: TObject);
public
NumTest: integer;
CurrentTest: TTest;
stopwatch, timeMeasure: TEpikTimer;
procedure SetNumTest(value: integer);
end;
var
FMain: TFMain;
implementation
uses utest1, utest2, utest3, utest4, utest5, utest6, utest7,
utest8, utest9, utest10, utest11, utest14, utest15, utest16, utest17,
utest18, utest19, utest22, utest23, utest24, utest25, utest26,
utest27, utest31, utest32, utest33, BGRAScene3D,
BGRABitmapTypes, LCLIntf, BGRAText;
const
TestCount = 33;
{ TFMain }
procedure TFMain.SetNumTest(value: integer);
begin
FreeAndNil(CurrentTest);
numTest := value;
Button_Prev.Enabled := TestCount >=2;
Button_Next.Enabled := TestCount >=2;
case numTest of
1: currentTest := TTest1.Create;
2: currentTest := TTest2.Create;
3: currentTest := TTest3.Create;
4: currentTest := TTest4.Create;
5: currentTest := TTest5.Create;
6: currentTest := TTest6.Create;
7: currentTest := TTest7.create;
8: currentTest := TTest8.create;
9: currentTest := TTest9.create;
10: currentTest := TTest10.create;
11: currentTest := TTest11.create('');
12: currentTest := TTest11.create('Emboss');
13: currentTest := TTest11.create('Contour');
14: currentTest := TTest14.create;
15: currentTest := TTest15.create;
16: currentTest := TTest16.create;
17: currentTest := TTest17.create;
18: currentTest := TTest18.create;
19: currentTest := TTest19.create(False,False);
20: currentTest := TTest19.create(True,False);
21: currentTest := TTest19.create(True,True);
22: currentTest := TTest22.create;
23: currentTest := TTest23.create;
24: currentTest := TTest24.create;
25: currentTest := TTest25.create;
26: currentTest := TTest26.create;
27: currentTest := TTest27.create(lnFace, liLowQuality);
28: currentTest := TTest27.create(lnFaceVertexMix, liLowQuality);
29: currentTest := TTest27.create(lnVertex, liLowQuality);
30: currentTest := TTest27.create(lnVertex, liAlwaysHighQuality);
31: currentTest := TTest31.create;
32: currentTest := TTest32.create;
33: currentTest := TTest33.create;
else
raise exception.Create('Test number unknown ('+IntToStr(numTest)+')');
end;
Label_TestName.Caption := 'Test n°'+inttostr(Value)+': '+currentTest.Name;
end;
procedure TFMain.FormCreate(Sender: TObject);
begin
CurrentTest := nil;
{$IFDEF DARWIN}
ResourceDir := ExtractFilePath(Application.ExeName)+'../../../../'+'img'+pathdelim;
If not FileExists(ResourceDir+'pac_d1.bmp') then
{$ENDIF}
ResourceDir:= ExtractFilePath(Application.ExeName)+'..'+pathdelim+'img'+pathdelim;
SetNumTest(1);
stopwatch := TEpikTimer.Create(Application);
timeMeasure := TEpikTimer.Create(Application);
timeMeasure.Start;
if TBGRAPixel_RGBAOrder then
Caption := Caption + ' (RGBA 32-bit)'
else
Caption := Caption + ' (BGRA 32-bit)';
end;
procedure TFMain.FormDestroy(Sender: TObject);
begin
FreeAndNil(CurrentTest);
end;
procedure TFMain.FormPaint(Sender: TObject);
var
strTime: string;
ptText: TPoint;
drawElapsed: extended;
begin
if CurrentTest <> nil then
begin
stopwatch.clear;
stopwatch.Start;
CurrentTest.OnPaint(self.Canvas,0,Panel1.Height,ClientWidth,ClientHeight-Panel1.Height);
drawElapsed := stopwatch.Elapsed;
if drawElapsed > 0.0001 then
begin
strTime := IntToStr(round(drawElapsed*1000))+ ' ms';
strTime += ', ' + IntToStr(round(1/drawElapsed)) + ' FPS';
ptText := Point(3,ClientHeight-25);
with self.Canvas do
begin
Font.Height := FixLCLFontFullHeight(Font.Name,25);
Font.Style := [fsBold];
Brush.Style := bsClear;
Font.Color := clBlack;
TextOut(ptText.X-1,ptText.Y-1,strTime);
TextOut(ptText.X+1,ptText.Y-1,strTime);
TextOut(ptText.X+1,ptText.Y+1,strTime);
TextOut(ptText.X-1,ptText.Y+1,strTime);
Font.Color := clWhite;
TextOut(ptText.X,ptText.Y,strTime);
end;
end;
end;
end;
procedure TFMain.Timer1Timer(Sender: TObject);
var
elapsed: Extended;
r: TRect;
begin
if CurrentTest <> nil then
begin
Timer1.Enabled := false;
elapsed := timeMeasure.Elapsed;
timeMeasure.clear;
timeMeasure.Start;
CurrentTest.OnTimer(ClientWidth,ClientHeight-Panel1.Height,elapsed);
r := rect(0,Panel1.Height,ClientWidth,ClientHeight);
InvalidateRect(self.Handle,@r,False);
self.Update;
Timer1.Enabled := true;
end;
end;
procedure TFMain.Button_NextClick(Sender: TObject);
begin
if NumTest < TestCount then
SetNumTest(NumTest+1) else
SetNumTest(1);
end;
procedure TFMain.Button_LastClick(Sender: TObject);
begin
SetNumTest(TestCount);
end;
procedure TFMain.Button_FirstClick(Sender: TObject);
begin
SetNumTest(1);
end;
procedure TFMain.Button_PrevClick(Sender: TObject);
begin
if NumTest > 1 then
SetNumTest(NumTest-1) else
SetNumTest(TestCount);
end;
initialization
{$I umain.lrs}
end.

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unit utest;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Graphics;
type
TTest = class
public
Name: string;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); virtual; abstract;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); virtual; abstract;
end;
var
ResourceDir: string;
implementation
end.

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unit utest1;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utestpacrect;
type
{ TTest1 }
TTest1 = class(TTestPacRect)
public
constructor Create;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
end;
implementation
{ TTest1 }
constructor TTest1.Create;
begin
inherited Create;
Name := 'Canvas.Draw(TBitmap) on Form. NOT RECOMMENDED! Flickering pacmans walking with a rectangle. Rectangle opacity depends on the standard Canvas rendering capacities on windows.';
end;
procedure TTest1.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var i: integer;
begin
if backgroundImg = nil then exit;
//draw background as TBitmap
Canvas.Draw(Left,Top,backgroundImg.Bitmap);
//draw sprites as TBitmaps
for i := 0 to high(pacLoc) do
Canvas.Draw(Left+pacLoc[i].x,Top+pacLoc[i].y,pacImg[numPacImg].Bitmap);
end;
end.

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unit utest10;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes;
const
sinTabPrecision = 12;
type
{ TTest10 }
TTest10 = class(TTest)
protected
virtualScreen: TBGRABitmap;
time: single;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest10 }
constructor TTest10.Create;
begin
inherited Create;
Name := 'Plasma rendered by Scanline access';
virtualScreen := nil;
time := 0;
end;
destructor TTest10.Destroy;
begin
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest10.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var xb,yb: integer;
p: PBGRAPixel;
value: integer;
center: TPointF;
intTime1, intTime2, intTime3: integer;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
center := pointF((sin(time)+1)/4+0.2,(cos(time*0.3)+1)/4+0.3);
intTime1 := round(time*65536*7/10);
intTime2 := round(time*65536*11/10);
intTime3 := round(time*65536*13/10);
for yb := 0 to virtualscreen.Height-1 do
begin
p := virtualScreen.ScanLine[yb];
for xb := 0 to virtualScreen.Width-1 do
begin
{$push}{$r-}
value := Sin65536(
(xb shl 8 + (height-yb)*(Sin65536(intTime2 shr 2) shr 8 - 128) + intTime1 shr 5 + Sin65536(yb shl 16 div height + intTime3) shr 4)*
( Sin65536(intTime1 shr 3) shr 9 - 64 + 256 )*2 div Width);
inc(value, Sin65536(yb * ( Sin65536(intTime1 shr 2) shr 9 - 64 + 256 )*256 div Height + intTime1 shr 1 +
xb*(Sin65536(intTime2 shr 4) shr 8 - 128) ) );
inc(value, Sin65536( round( sqrt(sqr(xb/width-center.x)+sqr(yb/height-center.y))
* ( (Sin65536(intTime3 shr 3)+ 2*65536) ) ) + intTime2 shr 2) );
{$pop}
value := value div (3*128);
if value > 255 then
begin
if value < 511 then value := value-256 else
value := 255;
p^.red := 255;
p^.green := 64+value shr 1;
p^.blue := 0;
end else
begin
p^.red := value;
p^.green := value shr 2;
p^.blue := 0;
end;
p^.alpha := 255;
inc(p);
end;
end;
virtualScreen.InvalidateBitmap;
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest10.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec;
end;
end.

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unit utest11;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, BGRAGrayscaleMask;
const
nbPoints = 6;
type
{ TTest11 }
TTest11 = class(TTest)
protected
virtualScreen: TBGRABitmap;
mask: TGrayscaleMask;
pts: array of TPointF;
dirs: array of TPointF;
FFilter: string;
public
constructor Create(filter: string);
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest11 }
constructor TTest11.Create(filter: string);
begin
inherited Create;
Name := 'Antialiased lines and splines';
if filter <> '' then Name += ' with filter '+filter;
randomize;
virtualScreen := nil;
FFilter := filter;
end;
destructor TTest11.Destroy;
begin
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest11.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var filtered: TBGRABitmap;
filteredMask: TGrayscaleMask;
begin
if pts = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if (mask <> nil) and ((mask.width <> width) or (mask.Height <> height)) then
FreeAndNil(mask);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
if ffilter = 'Emboss' then
begin
virtualScreen.Fill(BGRABlack);
virtualScreen.DrawPolyLineAntialias(virtualScreen.ComputeOpenedSpline(pts,ssCrossing),BGRAWhite,(width+height)/80,True);
filtered := virtualScreen.FilterEmbossHighlight(True);
virtualScreen.Fill(clForm);
virtualScreen.PutImage(0,0,filtered,dmDrawWithTransparency);
filtered.Free;
virtualscreen.Draw(Canvas,Left,Top,True);
end else
if ffilter = 'Contour' then
begin
if mask = nil then
mask := TGrayscaleMask.Create(virtualScreen.Width, virtualScreen.Height);
mask.Fill(ByteMaskBlack);
mask.DrawPolyLineAntialias(virtualScreen.ComputeOpenedSpline(pts,ssCrossing),
ByteMaskWhite, (width+height)/80, True);
filteredMask := mask.FilterContour;
filteredMask.Draw(virtualScreen, 0, 0, true);
filteredMask.Free;
virtualscreen.Draw(Canvas,Left,Top,True);
end else
begin
virtualScreen.Fill(BGRAWhite);
virtualScreen.DrawPolyLineAntialias(virtualScreen.ComputeOpenedSpline(pts,ssCrossing),BGRA(0,0,0,128),(width+height)/80,True);
virtualScreen.DrawPolyLineAntialias(pts,BGRA(0,0,0,128),(width+height)/800,True);
virtualscreen.Draw(Canvas,Left,Top,True);
end;
end;
procedure TTest11.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var i: integer;
begin
if pts = nil then
begin
setlength(pts,nbPoints);
setlength(dirs,nbPoints);
for i := 0 to NbPoints-1 do
begin
pts[i] := pointf(random(Width),random(Height));
dirs[i] := pointf((random(Width)-width/2)/20,(random(Height)-height/2)/20);
end;
end;
for i := 0 to NbPoints-1 do
begin
pts[i].x := pts[i].x+dirs[i].x;
if pts[i].x < 0 then
begin
pts[i].x := 0;
dirs[i].x := abs(dirs[i].x);
end;
if pts[i].x > width-1 then
begin
pts[i].x := width-1;
dirs[i].x := -abs(dirs[i].x);
end;
pts[i].y := pts[i].y+dirs[i].y;
if pts[i].y < 0 then
begin
pts[i].y := 0;
dirs[i].y := abs(dirs[i].y);
end;
if pts[i].y > height-1 then
begin
pts[i].y := height-1;
dirs[i].y := -abs(dirs[i].y);
end;
end;
end;
end.

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unit utest14;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Graphics, BGRABitmap, BGRABitmapTypes, utest;
type
{ TTest14 }
TTest14 = class(TTest)
protected
virtualScreen: TBGRABitmap;
time: single;
lightPos1,lightPos2: TPointF;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest14 }
constructor TTest14.Create;
begin
inherited Create;
Name := 'Layer blending: adding red and green gives yellow';
virtualScreen := nil;
time := 0;
end;
destructor TTest14.Destroy;
begin
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest14.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var layer: TBGRABitmap; x,y: single; radius: integer;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
if time = 0 then exit;
radius := (width+height) div 8;
virtualScreen.Fill(BGRABlack);
x := lightPos1.X*Width;
y := lightPos1.Y*Height;
virtualScreen.FillEllipseAntialias(x,y,radius,radius,BGRA(255,0,0,255));
layer := TBGRABitmap.Create(Width,Height,BGRABlack);
x := lightPos2.X*Width;
y := lightPos2.Y*Height;
layer.FillEllipseAntialias(x,y,radius,radius,BGRA(0,255,0,255));
virtualScreen.BlendImage(0,0,layer,boAdditive);
layer.Free;
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest14.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec*0.5;
lightPos1 := pointF((sin(time)+1)/4+0.2,(cos(time*0.3)+1)/4+0.3);
lightPos2 := pointF((sin(time*0.7+1)+1)/4+0.4,(cos(time*0.5+2)+1)/4+0.3);
end;
end.

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unit utest15;
{$mode objfpc}{$H+}
interface
uses
Graphics, Classes, SysUtils, utest, BGRAGradients, BGRABitmap, BGRABitmapTypes;
type
{ TTest15 }
TTest15 = class(TTest)
private
phong: TPhongShading;
virtualScreen, map, colorMap: TBGRABitmap;
time: double;
lightPos1: TPointF;
ShouldGenerateMap: Boolean;
procedure GenerateMap;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest15 }
constructor TTest15.Create;
begin
Name := 'Phong shading and Perlin noise';
virtualScreen := nil;
time := 0;
randomize;
phong := TPhongShading.Create;
phong.LightPositionZ := 128;
phong.SpecularIndex := 20;
phong.SpecularFactor := 0.5;
phong.LightSourceIntensity := 100;
phong.AmbientFactor := 0.3;
phong.NegativeDiffusionFactor := 0.3;
ShouldGenerateMap:= false;
end;
destructor TTest15.Destroy;
begin
phong.Free;
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest15.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
const lightSize= 20;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(map);
FreeAndNil(colorMap);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
end;
if ShouldGenerateMap then
begin
GenerateMap;
ShouldGenerateMap := false;
end;
if map <> nil then
begin
phong.LightPositionF := PointF(lightPos1.x * Width, lightPos1.y * Height);
phong.Draw(virtualScreen,map,64,0,0,colorMap);
virtualScreen.GradientFill(phong.LightPosition.X-lightSize,phong.LightPosition.Y-lightSize,
phong.LightPosition.X+lightSize,phong.LightPosition.Y+lightSize, BGRA(255,255,240,255),BGRAPixelTransparent,
gtRadial,PointF(phong.LightPosition.X,phong.LightPosition.Y),PointF(phong.LightPosition.X+lightSize,phong.LightPosition.Y),
dmDrawWithTransparency);
virtualScreen.Draw(Canvas,Left,Top,True);
end else
begin
virtualScreen.Fill(BGRABlack);
virtualScreen.TextOut(Width div 2, height div 2-virtualScreen.FontHeight div 2,'Generating map...',BGRAWhite,taCenter);
virtualScreen.Draw(Canvas,Left,Top,True);
ShouldGenerateMap := True;
end;
end;
procedure TTest15.GenerateMap;
var
i: Integer;
p: PBGRAPixel;
pcol: PBGRAPixel;
temp: TBGRABitmap;
begin
FreeAndNil(map);
FreeAndNil(colorMap);
map := CreatePerlinNoiseMap(virtualscreen.Width,virtualscreen.Height,2,2);
colorMap := TBGRABitmap.Create(map.width,map.Height,BGRAWhite);
p := map.Data;
pcol := colorMap.Data;
for i := 0 to map.NbPixels-1 do
begin
if p^.red < 64 then pcol^ := BGRA(0,128,255) else //water
if p^.red < 96 then pcol^ := BGRA(240,200,100) else //beach
if p^.red < 128 then pcol^ := BGRA(100,190,0) else //grass
if p^.red < 220 then pcol^ := BGRA(180,120,90) else //mountain
pcol^ := BGRAWhite; //snow
if p^.red < 128 then //water and beach less
p^ := MapHeightToBGRA((128-(128-p^.red)/4)/255,255);
inc(pcol);
inc(p);
end;
temp := colorMap.FilterBlurRadial(2,rbCorona);
colorMap.Free;
colorMap := temp;
end;
procedure TTest15.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
begin
time := time+ElapsedSec;
lightPos1 := pointF((sin(time*0.7+1)+1)/4+0.4,(cos(time*0.5+2)+1)/4+0.3);
end;
end.

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unit utest16;
{$mode objfpc}{$H+}
interface
uses
Graphics, Classes, SysUtils, utest, BGRAGradients, BGRABitmap, BGRABitmapTypes;
type
{ TTest16 }
TTest16 = class(TTest)
private
phong: TPhongShading;
chartTime,lightTime: double;
lightPos1: TPointF;
RoundCorners : boolean;
series: array of record
val1,val2: integer;
end;
color1,color2: TBGRAPixel;
procedure NewChart;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses types;
{ TTest16 }
constructor TTest16.Create;
begin
Name := 'Phong shading primitives';
lightTime := 0;
chartTime := 0;
randomize;
phong := TPhongShading.Create;
NewChart;
end;
procedure TTest16.NewChart;
var
i: Integer;
procedure RandomSwap(var color: TBGRAPixel);
var temp: byte;
begin
if random(2)= 0 then
begin
temp := color.Red;
color.red := color.Green;
color.green := temp;
end;
if random(2)= 0 then
begin
temp := color.green;
color.green := color.blue;
color.blue := temp;
end;
end;
begin
setlength(series, 4+random(6));
for i := 0 to high(series) do
begin
series[i].val1 := random(50);
series[i].val2 := random(50);
end;
color1 := BGRA(255,160,0);
RandomSwap(color1);
color2 := BGRA(140,180,255);
RandomSwap(Color2);
RoundCorners := not RoundCorners;
end;
destructor TTest16.Destroy;
begin
phong.Free;
inherited Destroy;
end;
procedure TTest16.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var
borderSize: integer;
barPrecalc: TBGRABitmap;
procedure DrawBar(image: TBGRABitmap; bounds: TRect; color : TBGRAPixel);
begin
if barPrecalc <> nil then
phong.Draw(image,barPrecalc,borderSize,bounds.Left,bounds.Top,color)
else
phong.DrawRectangle(image,bounds,borderSize,borderSize,color,RoundCorners,[rmoNoBottomBorder]);
end;
const
chartTitle = 'Chart example';
var
image: TBGRABitmap;
i: integer;
maxVal: integer;
r: TRect;
gbounds: TRect;
s: TSize;
begin
if lightTime = 0 then exit;
barPrecalc := nil;
//create background
image := TBGRABitmap.Create(Width,Height);
image.GradientFill(0,0,image.Width,image.Height,BGRA(255,255,255),BGRA(128,128,128),gtLinear,PointF(0,0),PointF(image.Width,Image.Height),dmSet);
gbounds := rect(round(image.Width*0.1),round(image.Height*0.2),round(image.Width*0.9),round(image.Height*0.98));
image.Rectangle(gbounds,BGRA(0,0,0,96),dmDrawWithTransparency);
borderSize := round((gbounds.right-gbounds.left)/length(series)*0.06);
if borderSize = 0 then borderSize := 1;
//init phong
phong.LightPosition := Point(round(lightPos1.X*Width),round(lightPos1.Y*Height));
phong.LightPositionZ := 2*borderSize;
//draw title
image.FontHeight := gbounds.Top div 4;
s := image.TextSize(chartTitle);
phong.DrawSphere(image, rect((gbounds.Left+gbounds.Right-s.cx*2) div 2,(gbounds.Top-s.cy*2) div 2,
(gbounds.Left+gbounds.Right+s.cx*2) div 2,(gbounds.Top+s.cy*2) div 2),10,BGRA(0,255,0,192));
image.TextOut((gbounds.Left+gbounds.Right) div 2+1, (gbounds.Top-s.cy) div 2+1,ChartTitle,BGRABlack,taCenter);
image.TextOut((gbounds.Left+gbounds.Right) div 2-1, (gbounds.Top-s.cy) div 2-1,ChartTitle,BGRAWhite,taCenter);
//compute max value
maxVal := 1;
for i := 0 to high(series) do
begin
if series[i].val1 > maxVal then maxVal := series[i].Val1;
if series[i].val2 > maxVal then maxVal := series[i].Val2;
end;
if RoundCorners then
barPrecalc := CreateRoundRectangleMap(round((0.4-0.1)/length(series)*(gbounds.Right-gBounds.Left)),gBounds.Bottom-gBounds.Top,borderSize,[rmoNoBottomBorder])
else
barPrecalc := CreateRectangleMap(round((0.4-0.1)/length(series)*(gbounds.Right-gBounds.Left)),gBounds.Bottom-gBounds.Top,borderSize,[rmoNoBottomBorder]);
image.ClipRect := gBounds;
//draw bars
for i := 0 to high(series) do
begin
r.Left := gbounds.Left+round((i+0.1)/length(series)*(gbounds.Right-gBounds.Left));
r.Right := gbounds.Left+round((i+0.4)/length(series)*(gbounds.Right-gBounds.Left));
r.top := gbounds.Top+round((gbounds.Bottom-gBounds.Top)*(1-series[i].val1/maxVal));
r.bottom := gbounds.Bottom;
DrawBar(image,r,color1);
r.Left := gbounds.Left+round((i+0.43)/length(series)*(gbounds.Right-gBounds.Left));
r.Right := gbounds.Left+round((i+0.73)/length(series)*(gbounds.Right-gBounds.Left));
r.top := gbounds.Top+round((gbounds.Bottom-gBounds.Top)*(1-series[i].val2/maxVal));
r.bottom := gbounds.Bottom;
DrawBar(image,r,color2);
end;
image.NoClip;
barPrecalc.Free;
//draw chart
image.Draw(Canvas,Left,Top,True);
image.free;
end;
procedure TTest16.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
begin
lightTime := lightTime+ElapsedSec*0.2;
lightPos1 := pointF((sin(lightTime*0.7+1)+1)/2,(cos(lightTime*0.5+2)+1)/4-0.3);
chartTime := chartTime+ElapsedSec;
if chartTime > 10 then
begin
chartTime := chartTime-10;
NewChart;
end;
end;
end.

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unit utest17;
{$mode objfpc}{$H+}
interface
uses
Graphics, Classes, SysUtils, utest, BGRABitmap, BGRABitmapTypes;
type
{ TTest17 }
TTest17 = class(TTest)
time: double;
dashstyle: TPenStyle;
constructor Create;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest17 }
constructor TTest17.Create;
begin
Name := 'Line primitives';
dashstyle := psSolid;
end;
procedure TTest17.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var
image: TBGRABitmap;
c : TBGRAPixel;
angleofs: single;
procedure DrawLines(x,y: single; title: string);
var
penwidth: single;
i: Integer;
ca,sa: single;
begin
image.textout(round(x),round(y),title,c);
y += image.TextSize(title).cy+10;
for i := 1 to 2 do
begin
ca := cos(sin(angleofs)/2);
sa := sin(sin(angleofs)/2);
penwidth := i*8+1;
image.PenStyle := dashstyle;
image.DrawPolyLineAntialias([PointF(x+40,y),PointF(x,y),PointF(x+sa*6*penwidth,y+ca*6*penwidth)],ColorToBGRA(clHighlight),penwidth);
if penwidth > 5 then
begin
image.penStyle := psSolid;
image.DrawPolyLineAntialias([PointF(x+40,y),PointF(x,y),PointF(x+sa*6*penwidth,y+ca*6*penwidth)],ColorToBGRA(clHighlightText),1);
end;
y += penwidth*2+6*penwidth+5;
angleofs += Pi*0.6;
end;
end;
begin
angleofs := time;
image := TBGRABitmap.Create(Width,Height,ColorToBGRA(clBtnFace));
c := ColorToBGRA(clWindowText);
image.LineCap := pecFlat;
DrawLines(30,20,'Flat cap');
image.LineCap := pecSquare;
DrawLines(115,Height-200,'Square');
image.LineCap := pecRound;
DrawLines(190,20,'Round cap');
image.LineCap := pecFlat;
image.JoinStyle := pjsBevel;
DrawLines(330,20,'Bevel join');
image.JoinStyle := pjsMiter;
DrawLines(430,Height-200,'Miter join');
image.JoinStyle := pjsRound;
DrawLines(530,20,'Round join');
image.Draw(Canvas,Left,Top,True);
image.free;
end;
procedure TTest17.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
var prev5: integer;
begin
prev5 := trunc(time/5);
time := time+0.1;
if prev5 <> trunc(time/5) then
begin
if dashstyle = psDashDotDot then
dashstyle := psSolid else
dashstyle := succ(dashstyle);
end;
end;
end.

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unit utest18;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes;
const
nbPoints = 3;
type
{ TTest18 }
TTest18 = class(TTest)
protected
virtualScreen,texture,backgroundTile,background: TBGRABitmap;
pts: array of TPointF;
dirs: array of TPointF;
angle: single;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest18 }
constructor TTest18.Create;
begin
inherited Create;
Name := 'Affine image transformation';
texture := TBGRABitmap.Create(ResourceDir+'pac_d1.bmp');
texture.ReplaceColor(texture.GetPixel(0,0),BGRAPixelTransparent);
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
randomize;
virtualScreen := nil;
background := nil;
end;
destructor TTest18.Destroy;
begin
texture.free;
virtualScreen.Free;
backgroundTile.Free;
background.Free;
inherited Destroy;
end;
procedure TTest18.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
if pts = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
background := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
virtualScreen.PutImage(0,0,background,dmSet);
virtualScreen.PutImageAffine(pts[1],pts[0],pts[2],texture);
virtualScreen.DrawPolyLineAntialias(pts,BGRAWhite,3);
virtualScreen.DrawPolyLineAntialias(pts,BGRABlack,1);
virtualScreen.PutImageAngle(virtualScreen.Width div 2,virtualScreen.Height div 2,texture,angle,texture.Width/2,texture.Height/2);
virtualScreen.draw(Canvas,Left,Top);
end;
procedure TTest18.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var i: integer;
moveFactor: single;
begin
angle += ElapsedSec*20;
if pts = nil then
begin
setlength(pts,nbPoints);
setlength(dirs,nbPoints);
for i := 0 to NbPoints-1 do
begin
pts[i] := pointf(random(Width),random(Height));
dirs[i] := pointf((random(Width)-width/2)/20,(random(Height)-height/2)/20);
end;
end;
moveFactor := ElapsedSec*20;
for i := 0 to NbPoints-1 do
begin
pts[i].x := pts[i].x+dirs[i].x*moveFactor;
if pts[i].x < 0 then
begin
pts[i].x := 0;
dirs[i].x := abs(dirs[i].x);
end;
if pts[i].x > width-1 then
begin
pts[i].x := width-1;
dirs[i].x := -abs(dirs[i].x);
end;
pts[i].y := pts[i].y+dirs[i].y*moveFactor;
if pts[i].y < 0 then
begin
pts[i].y := 0;
dirs[i].y := abs(dirs[i].y);
end;
if pts[i].y > height-1 then
begin
pts[i].y := height-1;
dirs[i].y := -abs(dirs[i].y);
end;
end;
end;
end.

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unit utest19;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, ucube3d, BGRAGradientScanner;
type
{ TTest19 }
TTest19 = class(TTest)
protected
virtualScreen,texture,backgroundTile,background: TBGRABitmap;
gradient: TBGRAGradientScanner;
scene: TCubeScene3D;
public
constructor Create(TextureInterpolation: boolean; GradientTexture: boolean);
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses utexture, BGRAScene3D;
{ TTest19 }
constructor TTest19.Create(TextureInterpolation: boolean; GradientTexture: boolean);
begin
inherited Create;
scene := TCubeScene3D.Create;
scene.RenderingOptions.TextureInterpolation := TextureInterpolation;
// scene.RenderingOptions.LightingInterpolation := liHighQuality;
if TextureInterpolation then
Name := 'Perspective' else
Name := 'Linear and perspective';
Name += ' texture mapping';
if gradientTexture then
begin
name += ' with gradient';
gradient := TBGRAGradientScanner.Create(BGRAWhite,BGRABlack,gtRadial,PointF(0.5,0.5),PointF(0.7,0.5),True,True);
scene.SetCubeTexture(gradient,1,1);
end else
begin
texture := CreateGreenTexture;
if TextureInterpolation then Name += ' with texture interpolation' else
Name += ' without texture interpolation';
texture.ScanInterpolationFilter := rfHalfCosine;
scene.SetCubeTexture(texture);
end;
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
randomize;
virtualScreen := nil;
background := nil;
end;
destructor TTest19.Destroy;
begin
scene.free;
gradient.free;
texture.free;
virtualScreen.Free;
backgroundTile.Free;
background.Free;
inherited Destroy;
end;
procedure TTest19.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
background := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
virtualScreen.PutImage(0,0,background,dmSet);
if scene <> nil then
begin
scene.Surface := virtualScreen;
if (gradient <> nil) or scene.RenderingOptions.TextureInterpolation then
begin
scene.Render;
end
else
begin
scene.DefaultLightingNormal := lnNone;
scene.RenderingOptions.PerspectiveMode := pmLinearMapping;
scene.ViewCenter := PointF(virtualScreen.Width/4,virtualScreen.Height/2);
scene.Render;
scene.RenderingOptions.PerspectiveMode := pmPerspectiveMapping;
scene.ViewCenter := PointF(virtualScreen.Width*3/4,virtualScreen.Height/2);
scene.Render;
end;
end;
virtualScreen.draw(Canvas,Left,Top);
end;
procedure TTest19.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var
moveFactor: single;
begin
moveFactor := ElapsedSec*20;
with scene.cube.MainPart do
begin
RotateYRad(0.02*moveFactor);
RotateXRad(-0.01*moveFactor);
RotateZRad(0.005*moveFactor);
end;
end;
end.

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unit utest2;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utestpacrect;
type
{ TTest2 }
TTest2 = class(TTestPacRect)
protected
virtualScreen: TBitmap;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
end;
implementation
{ TTest2 }
constructor TTest2.Create;
begin
inherited Create;
Name := 'Canvas.Draw(TBitmap) on TBitmap. NOT RECOMMENDED! Non-flickering pacmans walking with a rectangle. Rectangle opacity depends on the standard Canvas rendering capacities on bitmap canvas.';
virtualScreen := nil;
end;
destructor TTest2.Destroy;
begin
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest2.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var i: integer;
begin
if backgroundImg = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
begin
virtualscreen := TBitmap.Create;
virtualscreen.width := Width;
virtualscreen.Height := height;
end;
//draw background as TBitmap on bitmap Canvas
virtualscreen.Canvas.Draw(0,0,backgroundImg.Bitmap);
//draw sprites as TBitmaps on bitmap Canvas
for i := 0 to high(pacLoc) do
virtualscreen.Canvas.Draw(pacLoc[i].x,pacLoc[i].y,pacImg[numPacImg].Bitmap);
//draw virtualscreen as TBitmap
Canvas.Draw(Left,Top,virtualscreen);
end;
end.

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unit utest22;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utest;
type
{ TTest22 }
TTest22 = class(TTest)
protected
virtualScreen,pac: TBGRABitmap;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width, Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest22 }
constructor TTest22.Create;
begin
inherited Create;
randomize;
Name := 'Fast clipping (rectangle)';
pac := TBGRABitmap.Create(ResourceDir+'pac_d2.bmp');
pac.ReplaceColor(pac.GetPixel(0,0),BGRAPixelTransparent);
end;
destructor TTest22.Destroy;
begin
pac.free;
virtualscreen.free;
end;
procedure TTest22.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var c: TBGRAPixel; x1,y1,x2,y2,x3,y3: integer; w: single;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height,BGRABlack);
virtualscreen.ClipRect := rect(Width div 4,Height div 4, Width*3 div 4, Height*3 div 4);
c := BGRA(random(256),random(256),random(256),random(128)+128);
x1 := random(width);
y1 := random(height);
x2 := random(width);
y2 := random(height);
x3 := random(width);
y3 := random(height);
w := random(width+height)/500;
case random(12) of
0: virtualscreen.DrawHorizLine(x1,y1,x2,c);
1: virtualscreen.SetHorizLine(x1,y1,x2,c);
2: virtualscreen.DrawLine(x1,y1,x2,y2,c,True);
3: virtualscreen.DrawLineAntialias(x1,y1,x2,y2,c,w);
4: virtualscreen.EraseLineAntialias(x1,y1,x2,y2,c.alpha,w);
5: if random(2)= 0 then
virtualscreen.FillPoly([PointF(x1,y1),PointF(x2,y2),PointF(x3,y3)],c,dmDrawWithTransparency)
else virtualscreen.FillPolyAntialias([PointF(x1,y1),PointF(x2,y2),PointF(x3,y3)],c);
6: virtualscreen.FillEllipseAntialias(x1,y1,x2-x1,y2-y1,c);
7: virtualscreen.Rectangle(x1,y1,x2-x1,y2-y1,c,dmDrawWithTransparency);
8: virtualscreen.RoundRectAntialias(x1,y1,x2,y2,abs((x2-x1)/6),abs((y2-y1)/6),c,w);
9: virtualscreen.FillRect(x1,y1,x2-x1,y2-y1,c,dmDrawWithTransparency);
10: virtualscreen.TextOutAngle(x1,y1,random(3600),'Some text',c,taCenter);
11: virtualScreen.PutImage(x1,y1,pac,dmDrawWithTransparency);
end;
virtualscreen.NoClip;
virtualscreen.SetPixel(random(width),random(height),c);
//draw virtualscreen opaque on canvas
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest22.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
begin
//nothing
end;
end.

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bgrabitmap/test/testbgrafunc/utest23.pas Normal file
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unit utest23;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, ucube3d;
type
{ TTest23 }
TTest23 = class(TTest)
protected
virtualScreen,backgroundTile,background: TBGRABitmap;
scene: TCubeScene3D;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses BGRAScene3D;
{ TTest23 }
constructor TTest23.Create;
begin
inherited Create;
Name := 'Multi-polygon antialiasing';
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
virtualScreen := nil;
background := nil;
scene := TCubeScene3D.Create();
scene.RenderingOptions.AntialiasingMode := am3dMultishape;
end;
destructor TTest23.Destroy;
begin
scene.free;
virtualScreen.Free;
backgroundTile.Free;
background.Free;
inherited Destroy;
end;
procedure TTest23.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
background := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
virtualScreen.PutImage(0,0,background,dmSet);
if scene <> nil then
begin
scene.Surface := virtualScreen;
scene.Render;
end;
virtualScreen.draw(Canvas,Left,Top);
end;
procedure TTest23.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var
moveFactor: single;
begin
moveFactor := ElapsedSec*20;
with scene.cube.MainPart do
begin
RotateYRad(0.02*moveFactor);
RotateXRad(-0.01*moveFactor);
RotateZRad(0.005*moveFactor);
end;
end;
end.

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bgrabitmap/test/testbgrafunc/utest24.pas Normal file
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unit utest24;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, ucube3d;
type
{ TTest24 }
TTest24 = class(TTest)
protected
virtualScreen,backgroundTile,texture,background: TBGRABitmap;
scene: TCubeScene3D;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses utexture, BGRAScene3D;
{ TTest24 }
constructor TTest24.Create;
begin
inherited Create;
Name := 'Multi-polygon antialiasing with perspective mapping';
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
texture := CreateMarbleTexture(256,256);
texture.ScanInterpolationFilter:= rfLinear;
virtualScreen := nil;
background := nil;
scene := TCubeScene3D.Create();
scene.RenderingOptions.AntialiasingMode := am3dMultishape;
scene.SetCubeTexture(texture);
end;
destructor TTest24.Destroy;
begin
scene.free;
virtualScreen.Free;
backgroundTile.Free;
background.Free;
texture.free;
inherited Destroy;
end;
procedure TTest24.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
background := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
virtualScreen.PutImage(0,0,background,dmSet);
if scene <> nil then
begin
scene.Surface := virtualScreen;
scene.Render;
end;
virtualScreen.draw(Canvas,Left,Top);
end;
procedure TTest24.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var
moveFactor: single;
begin
moveFactor := ElapsedSec*20;
with scene.cube.MainPart do
begin
RotateYRad(0.02*moveFactor);
RotateXRad(-0.01*moveFactor);
RotateZRad(0.005*moveFactor);
end;
end;
end.

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bgrabitmap/test/testbgrafunc/utest25.pas Normal file
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unit utest25;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Graphics, BGRABitmap, BGRABitmapTypes, BGRACanvas, utest;
type
{ TTest25 }
TTest25 = class(TTest)
private
pacman,virtualScreen: TBGRABitmap;
alphaFactor: byte;
time: single;
pts: array of TPoint;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
procedure DrawOnCanvas(Canvas: TBGRACanvas);
end;
implementation
uses BGRAGradientScanner;
{ TTest25 }
constructor TTest25.Create;
begin
inherited Create;
Name := 'BGRACanvas test (with aliasing on the left, with anti-aliasing on the right)';
virtualScreen := nil;
pacman := TBGRABitmap.Create(ResourceDir+'pac_d1.bmp');
pacman.ReplaceColor(pacman.GetPixel(0,0),BGRAPixelTransparent);
time := 0;
end;
destructor TTest25.Destroy;
begin
virtualScreen.Free;
pacman.free;
inherited Destroy;
end;
procedure TTest25.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var
i: Integer;
tx: integer;
begin
if time=0 then exit;
tx := (Width+1) div 2;
if (virtualscreen <> nil) and ((virtualscreen.width <> tx) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(tx,Height);
//randseed := 1;
setlength(pts, 20);
for i := 0 to high(pts) do
pts[i] := Point(Random(virtualScreen.Width),random(virtualScreen.Height));
end;
virtualScreen.CanvasBGRA.AntialiasingMode := amOff;
virtualScreen.CanvasBGRA.Font.Quality := fqSystem;
DrawOnCanvas(virtualScreen.CanvasBGRA);
virtualscreen.Draw(Canvas,Left,Top,True);
virtualScreen.CanvasBGRA.AntialiasingMode := amOn;
virtualScreen.CanvasBGRA.Font.Quality := fqFineClearTypeRGB;
DrawOnCanvas(virtualScreen.CanvasBGRA);
virtualscreen.Draw(Canvas,Left+Width div 2,Top,True);
end;
procedure TTest25.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec;
alphaFactor := round((sin(time)+1)/2*255);
end;
procedure TTest25.DrawOnCanvas(Canvas: TBGRACanvas);
var i,k: integer;
grad: TBGRAGradientScanner;
begin
for k := 1 to 1 do
begin
grad := TBGRAGradientScanner.Create(BGRA(0,150,255),BGRA(0,0,0),gtLinear,PointF(0,0),PointF(0,Canvas.Height/40),True,True);
With Canvas do
begin
Brush.style := bsSolid;
Brush.Color := clWhite;
Brush.Opacity := 255;
FillRect(0,0,Width,Height);
Font.Orientation := 0;
Font.Color := clBlack;
Font.Height := Height div 20;
Font.Texture := grad;
TextOut(Font.Height div 2,0,'Font rendering');
Font.Orientation := -450;
TextOut(Font.Height,Font.Height,'Text angle');
pen.width := 2;
pen.opacity := 255;
Brush.Color := clGreen;
brush.Style := bsSolid;
pen.Style := psDash;
Ellipse(pts[6].x,pts[6].y,pts[7].x,pts[7].y);
pen.Style := psSolid;
pen.width := 1;
pen.opacity := 255;
Brush.BGRAColor := BGRA(255,128,0);
brush.style := bsFDiagonal;
Ellipse(pts[14].x,pts[14].y,pts[15].x,pts[15].y);
pen.style := psClear;
pen.opacity := 64;
Brush.Color := clBlue;
Brush.Opacity := 128;
brush.style := bsCross;
Rectangle(pts[8].x,pts[8].y,pts[9].x,pts[9].y);
pen.Style := psSolid;
pen.width := 1;
pen.opacity := 128;
Brush.Color := clRed;
Brush.Opacity := 64;
brush.Style := bsSolid;
RoundRect(pts[10].x,pts[10].y,pts[11].x,pts[11].y,abs(pts[11].x-pts[10].x) div 2,abs(pts[11].y-pts[10].y) div 2);
brush.style := bsClear;
pen.width := 2;
RoundRect(pts[16].x,pts[16].y,pts[17].x,pts[17].y,abs(pts[17].x-pts[16].x) div 2,abs(pts[17].y-pts[16].y) div 2);
pen.style := psClear;
Brush.Color := clBlue;
Brush.Opacity := 192;
brush.style := bsSolid;
//Polygon(pts);
Pie(pts[12].x,pts[12].y,pts[13].x,pts[13].y,pts[6].x,pts[6].y,pts[7].x,pts[7].y);
Pen.Color := clBlack;
pen.style := psSolid;
pen.opacity := 128;
MoveTo(pts[0]);
for i := 0 to 5 do
begin
Pen.Width := i+1;
LineTo(pts[i+1]);
end;
Font.Texture := nil;
end;
Grad.Free;
end;
end;
end.

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unit utest26;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes;
const
nbPoints = 9;
type
{ TTest26 }
TTest26 = class(TTest)
protected
virtualScreen,backgroundTile: TBGRABitmap;
pts: array of TPointF;
dirs: array of TPointF;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest26 }
constructor TTest26.Create;
begin
inherited Create;
Name := 'Gradient shapes (antialiased or not)';
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
randomize;
virtualScreen := nil;
end;
destructor TTest26.Destroy;
begin
virtualScreen.Free;
backgroundTile.Free;
inherited Destroy;
end;
procedure TTest26.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
if pts = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
virtualScreen.Fill(backgroundTile);
virtualScreen.FillQuadLinearColor(pts[3],pts[4],pts[5],pts[6],BGRA(0,192,0),BGRA(0,128,255),BGRA(255,128,0),BGRA(255,255,255));
virtualScreen.FillTriangleLinearColorAntialias(pts[0],pts[1],pts[2],BGRA(255,0,0),BGRA(255,255,0),BGRA(255,0,255));
virtualScreen.FillEllipseLinearColorAntialias(pts[7].x,pts[7].y,pts[8].x/4,pts[8].y/4,BGRABlack,BGRAWhite);
virtualScreen.draw(Canvas,Left,Top);
end;
procedure TTest26.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var i: integer;
moveFactor: single;
begin
if pts = nil then
begin
setlength(pts,nbPoints);
setlength(dirs,nbPoints);
for i := 0 to NbPoints-1 do
begin
pts[i] := pointf(random(Width),random(Height));
dirs[i] := pointf((random(Width)-width/2)/20,(random(Height)-height/2)/20);
end;
end;
moveFactor := ElapsedSec*20;
for i := 0 to NbPoints-1 do
begin
pts[i].x := pts[i].x+dirs[i].x*moveFactor;
if pts[i].x < 0 then
begin
pts[i].x := 0;
dirs[i].x := abs(dirs[i].x);
end;
if pts[i].x > width-1 then
begin
pts[i].x := width-1;
dirs[i].x := -abs(dirs[i].x);
end;
pts[i].y := pts[i].y+dirs[i].y*moveFactor;
if pts[i].y < 0 then
begin
pts[i].y := 0;
dirs[i].y := abs(dirs[i].y);
end;
if pts[i].y > height-1 then
begin
pts[i].y := height-1;
dirs[i].y := -abs(dirs[i].y);
end;
end;
end;
end.

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unit utest27;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, BGRAScene3D, utore3d;
type
{ TTest27 }
TTest27 = class(TTest)
protected
virtualScreen,backgroundTile,background: TBGRABitmap;
scene: TToreScene3D;
public
constructor Create(lightNormal: TLightingNormal3D; lightInterp: TLightingInterpolation3D);
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest27 }
constructor TTest27.Create(lightNormal: TLightingNormal3D; lightInterp: TLightingInterpolation3D);
begin
inherited Create;
Name := 'Torus with ';
case lightNormal of
lnFace: Name += 'flat';
lnVertex: Name += 'vertex';
lnFaceVertexMix: Name += 'half-vertex';
lnNone: Name += 'no lighting';
end;
if lightNormal <> lnNone then
case lightInterp of
liLowQuality: if lightNormal <> lnFace then Name += ' low-quality shading'
else Name += ' shading';
liAlwaysHighQuality: Name += ' high-quality shading';
end;
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
virtualScreen := nil;
background := nil;
scene := TToreScene3D.Create();
scene.RenderingOptions.AntialiasingMode := am3dNone;
scene.RenderingOptions.LightingInterpolation := lightInterp;
scene.DefaultLightingNormal:= lightNormal;
end;
destructor TTest27.Destroy;
begin
scene.free;
virtualScreen.Free;
backgroundTile.Free;
background.Free;
inherited Destroy;
end;
procedure TTest27.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
background := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
virtualScreen.PutImage(0,0,background,dmSet);
if scene <> nil then
begin
scene.Surface := virtualScreen;
scene.Render;
end;
virtualScreen.draw(Canvas,Left,Top);
end;
procedure TTest27.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var
moveFactor: single;
begin
moveFactor := ElapsedSec*20;
scene.angle := scene.angle + moveFactor;
end;
end.

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unit utest3;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utestpacrect;
type
{ TTest3 }
TTest3 = class(TTestPacRect)
public
constructor Create;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
end;
implementation
{ TTest3 }
constructor TTest3.Create;
begin
inherited Create;
Name := 'TBGRABitmap.Draw(Form). You should see flickering Pacmans walking on the form with a rectangle. The opacity of the rectangle depends on the rendering capacities of BGRABitmap on windows.';
end;
procedure TTest3.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var i: integer;
begin
if backgroundImg = nil then exit;
//draw background opaque on canvas
backgroundImg.Draw(Canvas,Left,Top,True);
//draw sprites transparent on canvas
for i := 0 to high(pacLoc) do
pacImg[numPacImg].Draw(Canvas,Left+pacLoc[i].x,Top+pacLoc[i].y,false);
end;
end.

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unit utest31;
{$mode objfpc}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, BGRAGradients,
BGRATextFX;
const
nbPoints=3;
type
{ TTest31 }
TTest31 = class(TTest)
virtualScreen: TBGRABitmap;
pts: array of TPointF;
dirs: array of TPointF;
hsla1,hsla2: THSLAPixel;
textfx: TBGRATextEffect;
phong: TPhongShading;
wood: TBGRABitmap;
textfx_multi: TBGRATextEffect;
colorArray: array of TBGRAPixel;
colorTime: double;
textfx_lightpos: TBGRATextEffect;
time: double;
lightPos1: TPointF;
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer); override;
procedure OnTimer(Width, Height: Integer; ElapsedSec: Double);
override;
end;
implementation
uses utexture;
{ TTest31 }
constructor TTest31.Create;
begin
inherited Create;
Name := 'Gradient and text effect';
virtualScreen := nil;
hsla1.alpha := $ffff;
hsla1.hue := 0;
hsla1.lightness := $8000;
hsla1.saturation := $C000;
hsla2 := hsla1;
hsla2.hue := $2000;
phong := TPhongShading.Create;
phong.LightPositionZ := 128;
phong.SpecularIndex := 10;
phong.SpecularFactor := 0.6;
phong.LightSourceIntensity := 300;
phong.AmbientFactor := 0.45;
phong.NegativeDiffusionFactor := 0.3;
setlength(colorArray,6);
colorArray[0] := BGRA(255,128,128);
colorArray[1] := BGRA(255,160,0);
colorArray[2] := BGRA(255,255,0);
colorArray[3] := BGRA(160,255,0);
colorArray[4] := BGRA(0,255,160);
colorArray[5] := BGRA(128,128,255);
end;
destructor TTest31.Destroy;
begin
phong.free;
textfx.Free;
textfx_lightpos.Free;
textfx_multi.Free;
wood.free;
virtualScreen.free;
inherited Destroy;
end;
procedure TTest31.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var font: TFont; h, r: integer;
begin
if pts = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(textfx);
FreeAndNil(textfx_lightpos);
FreeAndNil(textfx_multi);
FreeAndNil(wood);
end;
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
if wood = nil then
begin
r := round(sqrt(Width*Height)/4);
if r < 64 then r:= 64;
wood := CreateWoodTexture(r,r);
end;
font := TFont.Create;
font.Name := 'Arial';
if textfx = nil then
begin
font.Bold := true;
font.Height := Height div 4;
textfx := TBGRATextEffect.Create('BGRA text effect',font,True);
font.Bold := false;
end;
if textfx_lightpos = nil then
begin
font.Height := Height div 20;
textfx_lightpos := TBGRATextEffect.Create('Light position',font,True);
end;
if textfx_multi = nil then
begin
font.Height := Height div 12;
font.Name := 'Lucida Console';
font.Bold := true;
textfx_multi := TBGRATextEffect.Create('Multicolor',font,True);
end;
font.Free;
virtualScreen.GradientFill(0,0,Width,Height,HSLAToBGRA(hsla1),HSLAToBGRA(hsla2),gtLinear,pts[0],pts[1],dmSet);
phong.LightPositionF := PointF(lightPos1.x * Width, lightPos1.y * Height);
h := round(textfx.Height *0.07);
phong.LightPositionZ := h*4;
textfx.DrawShaded(virtualScreen,Width div 2,Height div 2-textfx.Height div 2, phong, h,wood, taCenter, True);
r := textfx_lightpos.height div 8;
textfx_lightpos.DrawShadow(virtualScreen, phong.LightPosition.X+2*r,phong.LightPosition.Y+8+2*r,r,BGRABlack,taCenter);
textfx_lightpos.DrawOutline(virtualScreen, phong.LightPosition.X,phong.LightPosition.Y+8,BGRABlack,taCenter);
textfx_lightpos.Draw(virtualScreen, phong.LightPosition.X,phong.LightPosition.Y+8,BGRAWhite,taCenter);
virtualscreen.FillEllipseLinearColorAntialias(phong.LightPosition.X,phong.LightPosition.Y,4,4,BGRABlack,BGRAWhite);
textfx_multi.DrawShadow(virtualScreen, round(pts[2].x),round(pts[2].y), round(textfx_multi.Height/8), BGRA(255,255,255,255),taCenter);
textfx_multi.DrawMulticolored(virtualScreen, round(pts[2].x),round(pts[2].y), colorArray,taCenter);
//draw virtualscreen opaque on canvas
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest31.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
var i: integer;
moveFactor: single;
c,c2: TBGRAPixel;
begin
if pts = nil then
begin
setlength(pts,nbPoints);
setlength(dirs,nbPoints);
for i := 0 to NbPoints-1 do
begin
pts[i] := pointf(random(Width),random(Height));
dirs[i] := pointf((random(Width)-width/2)/20,(random(Height)-height/2)/20);
end;
dirs[2].x /= 10;
dirs[2].y /= 10;
end;
moveFactor := ElapsedSec*20;
for i := 0 to NbPoints-1 do
begin
pts[i].x := pts[i].x+dirs[i].x*moveFactor;
if pts[i].x < 0 then
begin
pts[i].x := 0;
dirs[i].x := abs(dirs[i].x);
end;
if pts[i].x > width-1 then
begin
pts[i].x := width-1;
dirs[i].x := -abs(dirs[i].x);
end;
pts[i].y := pts[i].y+dirs[i].y*moveFactor;
if pts[i].y < 0 then
begin
pts[i].y := 0;
dirs[i].y := abs(dirs[i].y);
end;
if pts[i].y > height-1 then
begin
pts[i].y := height-1;
dirs[i].y := -abs(dirs[i].y);
end;
end;
inc(hsla1.hue, round(moveFactor*40) );
inc(hsla2.hue, round(moveFactor*40) );
time := time+ElapsedSec;
lightPos1 := pointF((sin(time*0.7+1)+1)/4+0.4,(cos(time*0.5+2)+1)/4+0.3);
colorTime += ElapsedSec;
if colorTime > 0.3 then
begin
colorTime -= 0.3;
c := colorArray[high(colorArray)];
for i := 0 to high(colorArray) do
begin
c2 := colorArray[i];
colorArray[i]:= c;
c:= c2;
end;
end;
end;
end.

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unit utest32;
{$mode objfpc}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes;
type
{ TTest32 }
TTest32 = class(TTest)
virtualScreen,background: TBGRABitmap;
position,speed,direction: single;
constructor Create;
destructor Destroy; override;
procedure DrawRings(ABitmap: TBGRABitmap; APath: IBGRAPath; ACount: integer; ARadius: single);
procedure OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer); override;
procedure OnTimer(Width, Height: Integer; ElapsedSec: Double);
override;
end;
implementation
uses BGRAPath, BGRAVectorize, BGRAGradientScanner, BGRAUTF8;
{ TTest32 }
constructor TTest32.Create;
begin
inherited Create;
Name := 'Curved text';
virtualScreen := nil;
background := nil;
position := 0;
speed := 0;
direction := 1;
end;
destructor TTest32.Destroy;
begin
virtualscreen.free;
background.free;
inherited Destroy;
end;
procedure TTest32.DrawRings(ABitmap: TBGRABitmap;
APath: IBGRAPath; ACount: integer; ARadius: single);
var
step: single;
cursor: TBGRACustomPathCursor;
begin
cursor := APath.getCursor;
step := cursor.PathLength/ACount;
cursor.Position:= 0;
repeat
with cursor.CurrentCoordinate do
ABitmap.FillEllipseAntialias(x,y, ARadius,ARadius, CSSDarkSlateBlue);
until cursor.MoveForward(step) < 0.5*step;
cursor.Free;
end;
procedure TTest32.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var path1: TBGRAPath;
cursor1: TBGRAPathCursor;
size: single;
procedure PrepareBackground;
var
path2: TBGRAPath;
gradient: TBGRAGradientScanner;
fontRenderer: TBGRAVectorizedFontRenderer;
begin
background := TBGRABitmap.Create(Width,Height,CSSLightSteelBlue);
fontRenderer := TBGRAVectorizedFontRenderer.Create;
background.FontRenderer := fontRenderer;
background.FontHeight := round(size*0.09);
background.FontQuality := fqFineAntialiasing;
DrawRings(background, path1, 20, size/150);
path2 := TBGRAPath.Create;
path2.arc(width/2,height/2,size*0.4, Pi, 0, true);
fontRenderer.OutlineColor := BGRABlack;
fontRenderer.OutlineWidth := size/600;
fontRenderer.OutlineVisible := true;
background.FontVerticalAnchor := fvaBaseline;
gradient := TBGRAGradientScanner.Create(CSSYellow, CSSOrange, gtLinear, PointF(0,height/2), PointF(0,height/2+size*0.5));
background.TextOutCurved(path2, ' Left ...', gradient, taLeftJustify, 0);
background.TextOutCurved(path2, 'Middle', gradient, taCenter, 0);
background.TextOutCurved(path2, '... Right ', gradient, taRightJustify, 0);
gradient.free;
fontRenderer.OutlineVisible := false;
background.FontVerticalAnchor := fvaTop;
path2.Free;
end;
var
fontRenderer: TBGRAVectorizedFontRenderer;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
if width < height then size := width else size := height;
path1 := TBGRAPath.Create;
path1.arc(width/2,height/2,size*0.4, Pi, 0);
if virtualscreen = nil then
begin
PrepareBackground;
virtualscreen := TBGRABitmap.Create(Width,Height);
fontRenderer := TBGRAVectorizedFontRenderer.Create;
virtualScreen.FontRenderer := fontRenderer;
end else
fontRenderer := virtualScreen.FontRenderer as TBGRAVectorizedFontRenderer;
virtualScreen.PutImage(0,0, background, dmSet);
virtualScreen.FontHeight := background.FontHeight;
virtualScreen.FontQuality := background.FontQuality;
cursor1 := path1.CreateCursor;
speed := size/4/cursor1.PathLength;
if position < 0 then
begin
position := 0;
direction := 1;
end;
cursor1.Position := position*cursor1.PathLength;
virtualScreen.TextOutCurved(cursor1, 'Curved text '+UTF8_ARABIC_LAM+UTF8_ARABIC_ALEPH, BGRABlack, taLeftJustify, virtualScreen.FontFullHeight/8);
if cursor1.Position = cursor1.PathLength then direction := -1;
cursor1.Free;
path1.Free;
//draw virtualscreen opaque on canvas
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest32.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
begin
position += ElapsedSec*speed*direction;
end;
end.

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bgrabitmap/test/testbgrafunc/utest33.pas Normal file
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unit utest33;
{$mode objfpc}
interface
uses
Classes, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes;
type
{ TTest33 }
TTest33 = class(TTest)
virtualScreen: TBGRABitmap;
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer); override;
procedure OnTimer(Width, Height: Integer; ElapsedSec: Double);
override;
end;
implementation
{ TTest33 }
constructor TTest33.Create;
begin
inherited Create;
Name := 'Text vertical anchor';
virtualScreen := nil;
end;
destructor TTest33.Destroy;
begin
virtualscreen.free;
inherited Destroy;
end;
procedure TTest33.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
const
FontVerticalAnchorToStr: array[TFontVerticalAnchor] of string
= ('Top of the font with space for Âccents', 'Center of the font', 'Top of the UPPÊRCASE letters',
'Center of the UPPERCASE letters', 'Top of x and other small letters',
'Center of x and other small letters', 'Baseline of the text',
'Descent line for g q, etc.', 'Bottom of the font including bottom line spacing');
var y,h: integer;
textanchor: TFontVerticalAnchor;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
virtualScreen.Fill(CSSLightSteelBlue);
virtualScreen.FontName := 'Times New Roman';
h := Height div 20;
virtualScreen.FontHeight := h;
y := 0;
textanchor:= low(TFontVerticalAnchor);
repeat
y += h;
virtualScreen.HorizLine(0,y,virtualScreen.Width,BGRA(255,255,255),dmDrawWithTransparency);
virtualScreen.FontVerticalAnchor := textanchor;
virtualScreen.TextOut(virtualScreen.Width/2,y, FontVerticalAnchorToStr[textanchor], BGRABlack, taCenter, h/3);
y += h;
if textanchor >= high(TFontVerticalAnchor) then break;
textanchor:= succ(textanchor);
until false;
//draw virtualscreen opaque on canvas
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest33.OnTimer(Width, Height: Integer;
ElapsedSec: Double);
begin
//nothing
end;
end.

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unit utest4;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utestpacrect;
type
{ TTest4 }
TTest4 = class(TTestPacRect)
protected
virtualScreen: TBitmap;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
end;
implementation
{ TTest4 }
constructor TTest4.Create;
begin
inherited Create;
Name := 'TBGRABitmap.Draw(Bitmap). Non-flickering pacmans walking with a rectangle. Rectangle opacity depends on the rendering capacities of BGRABitmap on TBitmap.';
virtualScreen := nil;
end;
destructor TTest4.Destroy;
begin
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest4.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var i: integer;
begin
if backgroundImg = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
begin
virtualscreen := TBitmap.Create;
virtualscreen.width := Width;
virtualscreen.Height := height;
end;
//draw background opaque on bitmap canvas
backgroundImg.Draw(virtualScreen.Canvas,0,0,true);
//draw sprites transparent on bitmap canvas
for i := 0 to high(pacLoc) do
pacImg[numPacImg].Draw(virtualscreen.Canvas,pacLoc[i].x,pacLoc[i].y,false);
//draw virtualscreen as TBitmap
Canvas.Draw(Left,Top,VirtualScreen);
end;
end.

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unit utest5;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utestpacrect;
type
{ TTest5 }
TTest5 = class(TTestPacRect)
protected
virtualScreen: TBGRABitmap;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
end;
implementation
{ TTest5 }
constructor TTest5.Create;
begin
inherited Create;
Name := 'TBGRABitmap.PutImage. This is the recommended way. Non-flickering pacmans walking with a rectangle. Rectangle opacity always there with the rendering capacities on BGRABitmap.';
virtualScreen := nil;
end;
destructor TTest5.Destroy;
begin
virtualScreen.Free;
inherited Destroy;
end;
procedure TTest5.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var i: integer;
begin
if backgroundImg = nil then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
//draw background opaque in BGRA bitmap
virtualscreen.PutImage(0,0,backgroundImg,dmSet);
end;
//draw sprites transparent in BGRA bitmap
for i := 0 to high(pacLoc) do
virtualscreen.PutImage(pacLoc[i].x,pacLoc[i].y,pacImg[numPacImg],dmDrawWithTransparency);
//draw virtualscreen opaque on canvas
virtualscreen.Draw(Canvas,Left,Top,True);
//erase sprites
for i := 0 to high(pacLoc) do
virtualscreen.FillRect(RectWithSize(pacLoc[i].x,pacLoc[i].y,
pacImg[numPacImg].Width,pacImg[numPacImg].Height),
backgroundImg,dmSet);
end;
end.

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bgrabitmap/test/testbgrafunc/utest6.pas Normal file
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unit utest6;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utestback, Graphics, BGRABitmap, BGRABitmapTypes;
type
{ TTest6 }
TTest6 = class(TTestBack)
protected
image,virtualScreen: TBGRABitmap;
zoomFactor: single;
time: single;
procedure DrawImage(x,y: integer; pzoomfactor: single; mode : TResampleMode);
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses utest;
{ TTest6 }
procedure TTest6.DrawImage(x, y: integer; pzoomfactor: single; mode : TResampleMode);
var temp: TBGRABitmap;
width,height: integer;
begin
if pzoomfactor = 0 then exit;
width := (round(image.width*pzoomfactor)+1) and not 1; //even size for centering
if width <= 0 then width := 1;
height := (round(image.height*pzoomfactor)+1) and not 1; //even size for centering
if height <= 0 then height := 1;
temp := image.Resample(width,height,mode);
virtualScreen.PutImage(x-width div 2,y-height div 2,temp,dmDrawWithTransparency);
temp.Free;
end;
constructor TTest6.Create;
begin
inherited Create;
Name := 'Simple stretch vs fine resample';
virtualScreen := nil;
image := TBGRABitmap.Create(ResourceDir+'resampletest.png');
time := Pi/4;
end;
destructor TTest6.Destroy;
begin
virtualScreen.Free;
image.free;
inherited Destroy;
end;
procedure TTest6.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
begin
UpdateBackground(Width,Height);
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
FreeAndNil(virtualScreen);
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
virtualscreen.PutImage(0,0,backgroundImg,dmSet);
DrawImage(virtualScreen.Width div 4,virtualScreen.Height div 2, zoomFactor, rmSimpleStretch);
image.ResampleFilter := rfHalfCosine;
DrawImage(3*virtualScreen.Width div 4,virtualScreen.Height div 2, zoomFactor, rmFineResample);
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest6.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec*0.5;
zoomFactor := (sin(time)+1)*Height/image.Height/2;
end;
end.

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unit utest7;
{$mode objfpc}{$H+}
interface
uses
BGRAClasses, SysUtils, utest, Graphics, BGRABitmap, BGRABitmapTypes, BGRAGradientScanner;
type
{ TTest7 }
TTest7 = class(TTest)
protected
pacman,virtualScreen,background: TBGRABitmap;
time: single;
multigrad: TBGRACustomGradient;
pixels: array of record
x,y,dx,dy: single;
end;
procedure DrawPacman(x,y: integer; angle: single);
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer({%H-}Width,{%H-}Height: Integer; ElapsedSec: Double); override;
end;
implementation
{ TTest7 }
procedure TTest7.DrawPacman(x, y: integer; angle: single);
var temp: TBGRABitmap;
begin
temp := pacman.FilterRotate(pointF((pacman.width-1)/2,(pacman.height-1)/2),angle);
virtualScreen.PutImage(x-temp.width div 2,y-temp.height div 2,temp,dmDrawWithTransparency);
temp.Free;
end;
constructor TTest7.Create;
var temp: TBGRABitmap;
begin
inherited Create;
Name := 'Smart zoom x3 and rotate';
virtualScreen := nil;
background := nil;
pacman := TBGRABitmap.Create(ResourceDir+'pac_d1.bmp');
pacman.ReplaceColor(pacman.GetPixel(0,0),BGRAPixelTransparent);
temp := pacman.FilterSmartZoom3(moMediumSmooth);
pacman.Free;
pacman := temp;
time := 0;
multigrad := TBGRAHueGradient.Create(0,0,65535,40000,[hgoRepeat,hgoPositiveDirection,hgoLightnessCorrection]);
end;
destructor TTest7.Destroy;
begin
virtualScreen.Free;
pacman.free;
multigrad.Free;
background.Free;
inherited Destroy;
end;
procedure TTest7.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var
i: Integer;
smallW,smallH: integer;
pixBmp: TBGRABitmap;
begin
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(background);
end;
smallW := (Width+4) div 8;
smallH := (Height+4) div 8;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
background := TBGRABitmap.Create(Width,Height);
background.GradientFill(0,0,Width,Height,multigrad,gtRadial,PointF(0,0),PointF(Width/2,Height/2),dmSet,False);
setlength(pixels, round(sqrt(smallW*smallH)) );
for i := 0 to high(pixels) do
begin
pixels[i].x := random(smallW);
pixels[i].y := random(smallH);
pixels[i].dx := (random(1001)-500)/500;
pixels[i].dy := (random(1001)-500)/500;
end;
end;
virtualscreen.PutImage(0,0,background,dmSet);
pixBmp := TBGRABitmap.Create(smallW, smallH);
for i := 0 to high(pixels) do
begin
pixBmp.DrawPixelF(pixels[i].x, pixels[i].y, BGRABlack, dmDrawWithTransparency);
IncF(pixels[i].x, pixels[i].dx);
IncF(pixels[i].y, pixels[i].dy);
if pixels[i].x <= -1 then pixels[i].x := smallW else
if pixels[i].x >= smallW then pixels[i].x := -1;
if pixels[i].y <= -1 then pixels[i].y := smallH else
if pixels[i].y >= smallH then pixels[i].y := -1;
end;
virtualScreen.StretchPutImage(rect(0,0,Width,Height), pixBmp, dmDrawWithTransparency);
pixBmp.Free;
DrawPacman(virtualScreen.Width div 4,virtualScreen.Height div 2, ln(time+1)*100);
DrawPacman(3*virtualScreen.Width div 4,virtualScreen.Height div 2, -time*4);
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest7.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec*5;
end;
end.

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bgrabitmap/test/testbgrafunc/utest8.pas Normal file
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unit utest8;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, Graphics, BGRABitmap, BGRABitmapTypes, BGRATransform, utest;
type
{ TTest8 }
TTest8 = class(TTest)
private
backgroundTile: TBGRABitmap;
pacman,virtualScreen: TBGRABitmap;
twirled: TBGRABitmap;
alphaFactor: byte;
time: single;
procedure DrawPacman(x,y: integer; palphaFactor: byte);
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses Math;
{ TTest8 }
procedure TTest8.DrawPacman(x, y: integer; palphaFactor: byte);
begin
virtualScreen.PutImage(x-Pacman.width div 2,y-Pacman.height div 2,Pacman,dmDrawWithTransparency,palphaFactor);
end;
constructor TTest8.Create;
begin
inherited Create;
Name := 'Global opacity applied to pacman, background scrolling and twirl';
virtualScreen := nil;
twirled := nil;
pacman := TBGRABitmap.Create(ResourceDir+'pac_d1.bmp');
pacman.ReplaceColor(pacman.GetPixel(0,0),BGRAPixelTransparent);
time := Pi/4;
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
end;
destructor TTest8.Destroy;
begin
virtualScreen.Free;
twirled.free;
pacman.free;
backgroundTile.free;
inherited Destroy;
end;
procedure TTest8.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var twirl: TBGRATwirlScanner;
begin
if time=0 then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(twirled);
end;
if virtualscreen = nil then
begin
virtualscreen := TBGRABitmap.Create(Width,Height);
twirled := TBGRABitmap.Create(Width,Height);
end;
virtualscreen.Fill(backgroundTile);
DrawPacman(virtualScreen.Width div 4,virtualScreen.Height div 2, alphaFactor);
DrawPacman(3*virtualScreen.Width div 4,virtualScreen.Height div 2, 255-alphaFactor);
twirl := TBGRATwirlScanner.Create(virtualscreen,point(width div 2, height div 2),min(Width,Height)/3,0.3,2);
twirled.Fill(virtualscreen);
twirled.FillRect(floor(twirl.Center.X-twirl.Radius),floor(twirl.Center.Y-twirl.Radius),
ceil(twirl.Center.X+twirl.Radius),ceil(twirl.Center.Y+twirl.Radius),twirl,dmSet);
twirled.Draw(Canvas,Left,Top,True);
twirl.Free;
end;
procedure TTest8.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec;
alphaFactor := round((sin(time)+1)/2*255);
backgroundTile.ScanOffset := point(round((sin(time*0.3)+1)/2*1023) mod backgroundTile.Width,
round((sin(time*1.7)+1)/2*63) mod backgroundTile.Height);
end;
end.

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bgrabitmap/test/testbgrafunc/utest9.pas Normal file
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unit utest9;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, utestback, Graphics, BGRABitmap, BGRABitmapTypes;
type
{ TTest9 }
TTest9 = class(TTestBack)
protected
pacman,virtualScreen,masked: TBGRABitmap;
time: single;
lightPos1,lightPos2: TPointF;
public
constructor Create;
destructor Destroy; override;
procedure OnPaint(Canvas: TCanvas; Left,Top,Width,Height: Integer); override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
end;
implementation
uses math, utest;
{ TTest9 }
constructor TTest9.Create;
begin
inherited Create;
Name := 'Simple mask, ellipse and radial gradient';
virtualScreen := nil;
masked := nil;
pacman := TBGRABitmap.Create(ResourceDir+'pac_d1.bmp');
pacman.ReplaceColor(pacman.GetPixel(0,0),BGRAPixelTransparent);
time := 0;
end;
destructor TTest9.Destroy;
begin
virtualScreen.Free;
masked.Free;
pacman.free;
inherited Destroy;
end;
procedure TTest9.OnPaint(Canvas: TCanvas; Left,Top,Width, Height: Integer);
var mask: TBGRABitmap; x,y: single;
begin
UpdateBackground(Width,Height);
if time = 0 then exit;
if (virtualscreen <> nil) and ((virtualscreen.width <> width) or (virtualscreen.Height <> height)) then
begin
FreeAndNil(virtualScreen);
FreeAndNil(masked);
end;
if virtualscreen = nil then
virtualscreen := TBGRABitmap.Create(Width,Height);
if masked = nil then
begin
masked := backgroundImg.Duplicate;
masked.PutImage(virtualScreen.Width div 2,virtualScreen.Height div 2, pacman, dmDrawWithTransparency);
end;
virtualscreen.PutImage(0,0,backgroundImg,dmSet);
virtualScreen.FillRect(0,0,virtualScreen.Width,virtualScreen.Height,BGRA(0,0,0,192),dmDrawWithTransparency);
mask := TBGRABitmap.Create(Width,Height,BGRABlack);
mask.FillEllipseAntialias(lightPos1.X*Width,lightPos1.Y*Height,40,40,BGRAWhite);
x := lightPos2.X*Width;
y := lightPos2.Y*Height;
mask.GradientFill(floor(x-60),floor(y-60),ceil(x+60),ceil(y+60),BGRAWhite,BGRAPixelTransparent,gtRadial,pointf(x,y),pointf(x+60,y),dmDrawWithTransparency,True,False);
virtualScreen.FillMask(0,0,mask,masked);
mask.free;
virtualscreen.Draw(Canvas,Left,Top,True);
end;
procedure TTest9.OnTimer(Width, Height: Integer; ElapsedSec: Double);
begin
time := time+ElapsedSec*0.5;
lightPos1 := pointF((sin(time)+1)/4+0.2,(cos(time*0.3)+1)/4+0.3);
lightPos2 := pointF((sin(time*0.7+1)+1)/4+0.4,(cos(time*0.5+2)+1)/4+0.3);
end;
end.

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bgrabitmap/test/testbgrafunc/utestback.pas Normal file
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unit utestback;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utest;
type
{ TTestBack }
TTestBack = class(TTest)
public
constructor Create;
destructor Destroy; override;
procedure UpdateBackground(Width,Height: integer);
protected
backgroundTile,backgroundImg: TBGRABitmap;
end;
implementation
{ TTestBack }
constructor TTestBack.Create;
begin
inherited Create;
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
backgroundImg := nil;
end;
destructor TTestBack.Destroy;
begin
backgroundImg.Free;
backgroundTile.free;
inherited Destroy;
end;
procedure TTestBack.UpdateBackground(Width,Height: integer);
begin
if (backgroundImg <> nil) and ((backgroundImg.Width <> Width) or (backgroundImg.Height <> Height)) then
FreeAndNil(backgroundImg);
if backgroundImg = nil then
backgroundImg := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
end.

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bgrabitmap/test/testbgrafunc/utestpacrect.pas Normal file
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unit utestpacrect;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes, Graphics, utest;
const NbPacman = 20;
type
{ TTestPacRect }
TTestPacRect = class(TTest)
public
constructor Create;
destructor Destroy; override;
procedure OnTimer(Width,Height: Integer; ElapsedSec: Double); override;
protected
pacLoc: array of TPoint;
pacImg: array of TBGRABitmap;
pacSize : TPoint;
backgroundTile,backgroundImg: TBGRABitmap;
numPacImg: integer;
function AddTranspRectTo(filename: string): TBGRABitmap;
end;
implementation
{ TTestPacRect }
constructor TTestPacRect.Create;
begin
inherited Create;
randomize;
setlength(pacImg,4);
pacImg[0] := AddTranspRectTo(ResourceDir+'pac_d1.bmp');
pacImg[1] := AddTranspRectTo(ResourceDir+'pac_d2.bmp');
pacImg[2] := AddTranspRectTo(ResourceDir+'pac_d3.bmp');
pacImg[3] := AddTranspRectTo(ResourceDir+'pac_d2.bmp');
backgroundTile := TBGRABitmap.Create(ResourceDir+'diamondback.png');
backgroundImg := nil;
numPacImg := 0;
pacSize := Point(pacImg[0].Width,pacImg[0].Height);
end;
destructor TTestPacRect.Destroy;
var i: integer;
begin
backgroundImg.Free;
backgroundTile.Free;
for i := 0 to high(pacImg) do
pacImg[i].Free;
inherited Destroy;
end;
procedure TTestPacRect.OnTimer(Width, Height: Integer; ElapsedSec: Double);
var i: integer;
begin
if pacLoc = nil then
begin
setlength(pacLoc,NbPacman);
for i := 0 to high(pacLoc) do
pacLoc[i] := Point(random(Width+pacSize.X)-pacSize.X,random(Height+pacSize.Y)-pacSize.Y);
end else
begin
for i := 0 to high(pacLoc) do
if (pacLoc[i].Y <= -pacSize.Y) or (pacLoc[i].Y >= Height) then
pacLoc[i] := Point(random(Width+pacSize.X)-pacSize.X,random(Height+pacSize.Y)-pacSize.Y)
else
begin
inc(pacLoc[i].X,4);
if pacLoc[i].X >= Width then
begin
pacLoc[i].X := -pacSize.X;
pacLoc[i].Y := random(Height+pacSize.Y)-pacSize.Y;
end;
end;
end;
numPacImg := (numPacImg+1) mod length(pacImg);
if (backgroundImg <> nil) and ((backgroundImg.Width <> Width) or (backgroundImg.Height <> Height)) then
FreeAndNil(backgroundImg);
if backgroundImg = nil then
backgroundImg := backgroundTile.GetPart(rect(0,0,Width,Height));
end;
function TTestPacRect.AddTranspRectTo(filename: string): TBGRABitmap;
var originalImage: TBGRABitmap;
begin
originalImage := TBGRABitmap.Create(filename);
originalImage.ReplaceColor(originalImage.GetPixel(0,0),BGRAPixelTransparent);
result := TBGRABitmap.Create(originalImage.Width+originalImage.Height,OriginalImage.Height);
result.PutImage(0,0,originalImage,dmSet);
result.Rectangle(originalImage.Width,0,result.Width,result.Height,BGRABlack,BGRA(0,0,0,64),dmDrawWithTransparency);
originalImage.Free;
end;
end.

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bgrabitmap/test/testbgrafunc/utexture.pas Normal file
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unit utexture;
{$mode objfpc}
interface
uses
Classes, SysUtils, BGRABitmap, BGRABitmapTypes;
function CreateGreenTexture: TBGRABitmap;
function CreateMarbleTexture(tx,ty: integer): TBGRABitmap;
function CreateWoodTexture(tx,ty: integer): TBGRABitmap;
implementation
uses BGRAGradients;
function Interp256(value1,value2,position: integer): integer; inline; overload;
begin
result := (value1*(256-position) + value2*position) shr 8;
end;
function Interp256(color1,color2: TBGRAPixel; position: integer): TBGRAPixel; inline; overload;
begin
result.red := Interp256(color1.red,color2.red, position);
result.green := Interp256(color1.green,color2.green, position);
result.blue := Interp256(color1.blue,color2.blue, position);
result.alpha := Interp256(color1.alpha,color2.alpha, position);
end;
function CreateGreenTexture: TBGRABitmap;
var
p: PBGRAPixel;
i: Integer;
begin
result := CreatePerlinNoiseMap(256,256);
BGRAReplace(result,result.Resample(32,32));
p := result.data;
for i := 1 to result.NbPixels do
begin
p^ := Interp256( BGRA(0,128,0), BGRA(192,255,0), p^.red );
inc(p);
end;
end;
function CreateMarbleTexture(tx,ty: integer): TBGRABitmap;
var
colorOscillation: integer;
p: PBGRAPixel;
i: Integer;
begin
result := CreateCyclicPerlinNoiseMap(tx,ty,0.5,0.5,0.8,rfBestQuality);
p := result.Data;
for i := 0 to result.NbPixels-1 do
begin
colorOscillation := round(sqrt(sqrt((sin(p^.red*Pi/128+0.5)+1)/2))*256);
p^ := Interp256(BGRA(161,117,105),BGRA(218,197,180),colorOscillation);
inc(p);
end;
end;
function CreateWoodTexture(tx,ty: integer): TBGRABitmap;
var
colorOscillation, globalColorVariation: integer;
p: PBGRAPixel;
i: Integer;
begin
result := CreateCyclicPerlinNoiseMap(tx,ty,1.5,1.5,1,rfBestQuality);
p := result.Data;
for i := 0 to result.NbPixels-1 do
begin
colorOscillation := round(sqrt((sin(p^.red*Pi/16)+1)/2)*256);
globalColorVariation := p^.red;
p^:= Interp256( Interp256(BGRA(247,188,120),BGRA(255,218,170),colorOscillation),
Interp256(BGRA(157,97,60),BGRA(202,145,112),colorOscillation), globalColorVariation);
inc(p);
end;
end;
end.

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bgrabitmap/test/testbgrafunc/utore3d.pas Normal file
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unit utore3d;
{$mode objfpc}
interface
uses
Classes, SysUtils, BGRAScene3D;
type
{ TToreScene3D }
TToreScene3D = class(TBGRAScene3D)
private
shape,lightObj: IBGRAObject3D;
procedure CreateLight;
procedure CreateShape;
public
angle: single;
constructor Create;
procedure Render; override;
end;
implementation
uses BGRABitmapTypes, BGRAMatrix3D;
{ TToreScene3D }
constructor TToreScene3D.Create;
begin
inherited Create;
CreateLight;
CreateShape;
end;
procedure TToreScene3D.Render;
begin
with shape.MainPart do
begin
ResetTransform;
Translate(sin(angle*Pi/180+Pi/4)*10,0,0);
Scale(20);
RotateZDeg(angle*0.3);
RotateXDeg(angle*0.1+90);
end;
with lightObj.MainPart do
begin
ResetTransform;
RotateYDeg(angle);
Translate(60,0,0);
end;
inherited Render;
end;
procedure TToreScene3D.CreateShape;
const NbX = 40;
NbY = 20;
var
v: array[0..NbY-1,0..NbX-1] of IBGRAVertex3D;
i,j: integer;
m: TMatrix3D;
p,ofs: TPoint3D;
begin
shape := CreateObject(BGRA(255,0,0));
m := MatrixRotateY(2*Pi/NbY);
p := Point3D(0.3,0,0);
ofs := Point3D(1,0,0);
for i := 0 to NbY-1 do
begin
v[i,0] := shape.MainPart.Add(p+ofs);
p := m*p;
end;
m := MatrixRotateZ(2*Pi/NbX);
for j := 1 to NbX-1 do
for i := 0 to NbY-1 do
v[i,j] := shape.MainPart.Add(m*v[i,j-1].SceneCoord);
for j := 0 to NbX-1 do
for i := 0 to NbY-1 do
shape.AddFace([v[i,j],v[i,(j+1)mod NbX],v[(i+1) mod NbY,(j+1)mod NbX],v[(i+1) mod NbY,j]]);
end;
procedure TToreScene3D.CreateLight;
var v: array of IBGRAVertex3D;
lamp: IBGRAMaterial3D;
begin
lightObj := CreateObject(BGRAWhite);
DefaultLightingNormal := lnVertex;
DefaultMaterial.SpecularIndex := 10;
{ if DefaultLightingNormal = lnFace then
begin
AmbiantLightness := 0.4;
AddPointLight(lightObj.Vertices.Add(0,0,0),40,0.8,-0.3)
end
else
begin }
AmbiantLightColor := BGRA(128,128,128);
AddPointLight(lightObj.MainPart.Add(0,0,0),40,BGRA(128,128,64),-0.3);
//end;
v := lightObj.MainPart.Add([-1,-2,-2, 1,-1,-1, 1,1,-1, -1,2,-2,
-1,-2,+2, 1,-1,+1, 1,1,+1, -1,2,+2]);
lamp := CreateMaterial;
lamp.LightThroughFactor := 0.0001;
lightObj.Material := lamp;
lightObj.AddFace([v[0],v[1],v[2],v[3]],true);
lightObj.AddFace([v[4],v[5],v[1],v[0]],true);
lightObj.AddFace([v[7],v[6],v[5],v[4]],true);
lightObj.AddFace([v[3],v[2],v[6],v[7]],true);
lightObj.AddFace([v[1],v[5],v[6],v[2]],true);
//lightObj.AddFace([v[4],v[0],v[3],v[7]],true);
AddPointLight(lightObj.MainPart.Add(5,0,0),4,1,-0.3);
end;
end.