Стартовый пул

2024-04-02 08:46:59 +03:00
parent fd57fffd3a
commit 3bb34d000b
5591 changed files with 3291734 additions and 0 deletions
--- a/bgrabitmap/test/rationalbezier/rationalbezier.ico
+++ b/bgrabitmap/test/rationalbezier/rationalbezier.ico
--- a/bgrabitmap/test/rationalbezier/rationalbezier.lpi
+++ b/bgrabitmap/test/rationalbezier/rationalbezier.lpi
@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<CONFIG>
+  <ProjectOptions>
+    <Version Value="9"/>
+    <General>
+      <SessionStorage Value="InProjectDir"/>
+      <MainUnit Value="0"/>
+      <Title Value="rationalbezier"/>
+      <ResourceType Value="res"/>
+      <UseXPManifest Value="True"/>
+      <XPManifest>
+        <DpiAware Value="True"/>
+      </XPManifest>
+      <Icon Value="0"/>
+    </General>
+    <BuildModes Count="1">
+      <Item1 Name="Default" Default="True"/>
+    </BuildModes>
+    <PublishOptions>
+      <Version Value="2"/>
+    </PublishOptions>
+    <RunParams>
+      <local>
+        <FormatVersion Value="1"/>
+      </local>
+    </RunParams>
+    <RequiredPackages Count="2">
+      <Item1>
+        <PackageName Value="BGRABitmapPack"/>
+      </Item1>
+      <Item2>
+        <PackageName Value="LCL"/>
+      </Item2>
+    </RequiredPackages>
+    <Units Count="2">
+      <Unit0>
+        <Filename Value="rationalbezier.lpr"/>
+        <IsPartOfProject Value="True"/>
+      </Unit0>
+      <Unit1>
+        <Filename Value="unit1.pas"/>
+        <IsPartOfProject Value="True"/>
+        <ComponentName Value="Form1"/>
+        <HasResources Value="True"/>
+        <ResourceBaseClass Value="Form"/>
+        <UnitName Value="Unit1"/>
+      </Unit1>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="11"/>
+    <Target>
+      <Filename Value="rationalbezier"/>
+    </Target>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir)"/>
+      <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
+    </SearchPaths>
+    <Linking>
+      <Options>
+        <Win32>
+          <GraphicApplication Value="True"/>
+        </Win32>
+      </Options>
+    </Linking>
+  </CompilerOptions>
+  <Debugging>
+    <Exceptions Count="3">
+      <Item1>
+        <Name Value="EAbort"/>
+      </Item1>
+      <Item2>
+        <Name Value="ECodetoolError"/>
+      </Item2>
+      <Item3>
+        <Name Value="EFOpenError"/>
+      </Item3>
+    </Exceptions>
+  </Debugging>
+</CONFIG>
--- a/bgrabitmap/test/rationalbezier/rationalbezier.lpr
+++ b/bgrabitmap/test/rationalbezier/rationalbezier.lpr
@@ -0,0 +1,21 @@
+program rationalbezier;
+
+{$mode objfpc}{$H+}
+
+uses
+  {$IFDEF UNIX}{$IFDEF UseCThreads}
+  cthreads,
+  {$ENDIF}{$ENDIF}
+  Interfaces, // this includes the LCL widgetset
+  Forms, Unit1;
+
+{$R *.res}
+
+begin
+  RequireDerivedFormResource:=True;
+//  Application.Scaled:=True;
+  Application.Initialize;
+  Application.CreateForm(TForm1, Form1);
+  Application.Run;
+end.
+
--- a/bgrabitmap/test/rationalbezier/unit1.lfm
+++ b/bgrabitmap/test/rationalbezier/unit1.lfm
@@ -0,0 +1,92 @@
+object Form1: TForm1
+  Left = 533
+  Height = 365
+  Top = 210
+  Width = 533
+  Caption = 'Rational Bezier Curve'
+  ClientHeight = 365
+  ClientWidth = 533
+  OnCreate = FormCreate
+  OnDestroy = FormDestroy
+  OnMouseDown = FormMouseDown
+  OnMouseMove = FormMouseMove
+  OnMouseUp = FormMouseUp
+  OnPaint = FormPaint
+  LCLVersion = '1.6.0.4'
+  object Panel1: TPanel
+    Left = 0
+    Height = 37
+    Top = 0
+    Width = 533
+    Align = alTop
+    BevelOuter = bvNone
+    ClientHeight = 37
+    ClientWidth = 533
+    TabOrder = 0
+    object Label1: TLabel
+      AnchorSideLeft.Control = Owner
+      AnchorSideTop.Control = Owner
+      AnchorSideRight.Control = Owner
+      AnchorSideRight.Side = asrBottom
+      Left = 248
+      Height = 17
+      Top = 0
+      Width = 37
+      Caption = 'Label1'
+      ParentColor = False
+    end
+    object Label2: TLabel
+      AnchorSideLeft.Control = Owner
+      AnchorSideTop.Control = Label1
+      AnchorSideTop.Side = asrBottom
+      AnchorSideRight.Control = Owner
+      AnchorSideRight.Side = asrBottom
+      Left = 248
+      Height = 17
+      Top = 17
+      Width = 37
+      Caption = 'Label2'
+      ParentColor = False
+    end
+    object FloatSpinEdit1: TFloatSpinEdit
+      Left = 52
+      Height = 27
+      Top = 0
+      Width = 50
+      Increment = 0.05
+      MaxValue = 5
+      MinValue = 0
+      OnChange = FloatSpinEdit1Change
+      TabOrder = 0
+      Value = 2
+    end
+    object Label3: TLabel
+      Left = 8
+      Height = 17
+      Top = 5
+      Width = 39
+      Caption = 'Weight'
+      ParentColor = False
+    end
+    object Label4: TLabel
+      Left = 116
+      Height = 17
+      Top = 5
+      Width = 51
+      Caption = 'Precision'
+      ParentColor = False
+    end
+    object FloatSpinEdit2: TFloatSpinEdit
+      Left = 180
+      Height = 27
+      Top = 0
+      Width = 50
+      Increment = 0.05
+      MaxValue = 5
+      MinValue = 0.1
+      OnChange = FloatSpinEdit2Change
+      TabOrder = 1
+      Value = 0.4
+    end
+  end
+end
--- a/bgrabitmap/test/rationalbezier/unit1.pas
+++ b/bgrabitmap/test/rationalbezier/unit1.pas
@@ -0,0 +1,222 @@
+unit Unit1;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls, Spin,
+  ExtCtrls, BGRABitmapTypes, BGRABitmap, BGRACanvas2D;
+
+type
+
+  { TForm1 }
+
+  TForm1 = class(TForm)
+    FloatSpinEdit1: TFloatSpinEdit;
+    FloatSpinEdit2: TFloatSpinEdit;
+    Label1: TLabel;
+    Label2: TLabel;
+    Label3: TLabel;
+    Label4: TLabel;
+    Panel1: TPanel;
+    procedure FloatSpinEdit1Change(Sender: TObject);
+    procedure FloatSpinEdit2Change(Sender: TObject);
+    procedure FormCreate(Sender: TObject);
+    procedure FormDestroy(Sender: TObject);
+    procedure FormMouseDown(Sender: TObject; Button: TMouseButton;
+      Shift: TShiftState; X, Y: Integer);
+    procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
+    procedure FormMouseUp(Sender: TObject; Button: TMouseButton;
+      Shift: TShiftState; X, Y: Integer);
+    procedure FormPaint(Sender: TObject);
+  private
+    Center: TPoint;
+    B, B2: TRationalQuadraticBezierCurve;
+    CurPoint: integer;
+    PrevMouse: TPoint;
+    Img : TBGRABitmap;
+    procedure UpdateLength;
+  public
+
+  end;
+
+var
+  Form1: TForm1;
+
+implementation
+
+{$R *.lfm}
+
+{ TForm1 }
+
+procedure TForm1.FormCreate(Sender: TObject);
+begin
+  B:=BezierCurve(PointF(-150,80), PointF(0,0), PointF(150,80), FloatSpinEdit1.Value);
+  B2:=BezierCurve(PointF(-150,80), PointF(0,0), PointF(150,80), -FloatSpinEdit1.Value);
+  UpdateLength;
+  Img := TBGRABitmap.Create;
+  CurPoint := -1;
+end;
+
+procedure TForm1.FloatSpinEdit1Change(Sender: TObject);
+begin
+  B.weight := FloatSpinEdit1.Value;
+  B2.weight := -FloatSpinEdit1.Value;
+  UpdateLength;
+  invalidate;
+end;
+
+procedure TForm1.FloatSpinEdit2Change(Sender: TObject);
+begin
+  Invalidate;
+end;
+
+procedure TForm1.FormDestroy(Sender: TObject);
+begin
+  Img.free
+end;
+
+procedure TForm1.FormMouseDown(Sender: TObject; Button: TMouseButton;
+  Shift: TShiftState; X, Y: Integer);
+var
+  MinDist: single;
+
+  function TryPoint(APoint: TPointF): boolean;
+  var
+    dist: single;
+  begin
+    dist:= sqr(APoint.x-x)+sqr(APoint.y-y);
+    if dist < MinDist then
+    begin
+      MinDist := dist;
+      exit(true)
+    end
+    else exit(false);
+  end;
+
+begin
+  dec(y, Center.Y);
+  dec(x, Center.X);
+  if Button = mbLeft then
+  begin
+    CurPoint:= -1;
+    MinDist := sqr(15);
+    if TryPoint(B.p1) then CurPoint := 0;
+    if TryPoint(B.c) then CurPoint := 1;
+    if TryPoint(B.p2) then CurPoint := 2;
+    PrevMouse := Point(X,Y);
+  end;
+end;
+
+procedure TForm1.FormMouseMove(Sender: TObject; Shift: TShiftState; X,
+  Y: Integer);
+var
+  d: TPointF;
+begin
+  dec(y, Center.Y);
+  dec(x, Center.X);
+  if CurPoint <> -1 then
+  begin
+    d := PointF(X-PrevMouse.x,Y-PrevMouse.y);
+    case CurPoint of
+    0: begin B.p1.Offset(d); B2.p1.Offset(d); end;
+    1: begin B.c.Offset(d); B2.c.Offset(d); end;
+    2: begin B.p2.Offset(d); B2.p2.Offset(d); end;
+    end;
+    PrevMouse := Point(X,Y);
+    UpdateLength;
+    Invalidate;
+  end;
+end;
+
+procedure TForm1.FormMouseUp(Sender: TObject; Button: TMouseButton;
+  Shift: TShiftState; X, Y: Integer);
+begin
+  if Button = mbLeft then CurPoint := -1;
+end;
+
+procedure TForm1.FormPaint(Sender: TObject);
+var
+  f: TBGRACanvas2D;
+  R, boundsF: TrectF;
+  Aleft, Aright : TRationalQuadraticBezierCurve;
+  precision: single;
+begin
+  precision := FloatSpinEdit2.Value;
+  Img.SetSize(ClientWidth,ClientHeight-Panel1.Height);
+  Img.Fill(clWhite);
+  f := Img.Canvas2D;
+  Center := Point(ClientWidth div 2, (ClientHeight - Panel1.Height) div 2 + Panel1.Height);
+  boundsF := RectF(0,0, Img.Width,Img.Height);
+  boundsF.Offset(-Center.X, -Center.Y + Panel1.Height);
+  f.resetTransform;
+  f.translate(Center.X,Center.Y - Panel1.Height);
+  f.lineJoinLCL:= pjsBevel;
+  // arc d'ellipse en rouge, poids 0.4 (petit arc)
+  f.beginPath;
+  f.moveto(B.p1);
+  f.lineTo(B.c);
+  f.lineTo(B.p2);
+  f.moveto(B2.p1);
+  f.lineTo(B2.c);
+  f.lineTo(B2.p2);
+  f.moveto(B.p1.x+5,B.p1.y);
+  f.circle(B.p1.x,B.p1.y,5);
+  f.moveto(B.c.x+5,B.c.y);
+  f.circle(B.c.x,B.c.y,5);
+  f.moveto(B.p2.x+5,B.p2.y);
+  f.circle(B.p2.x,B.p2.y,5);
+  f.strokeStyle(clblack);
+  f.linewidth := 1;
+  f.stroke();
+  f.beginPath;
+  f.lineWidth := 4;
+  f.strokeStyle(BGRA(255,0,96,255));
+  f.moveTo(B.p1);
+  f.polylineTo(B.ToPoints(boundsF,precision));
+  f.stroke();
+  // arc d'ellipse en vert, poids -0.4 (grand arc, complétant le précédent)
+  f.beginPath;
+  f.strokeStyle(BGRA(96,160,0,255));
+  f.polylineTo(B2.ToPoints(boundsF,precision));
+  f.stroke();
+  if not B2.IsInfinite then
+  begin
+    // arc en bleu, c'est la deuxième moitié de l'arc en vert
+    B2.Split(Aleft, Aright);
+    f.strokeStyle(BGRA(0,96,255,255));
+    f.beginPath;
+    f.moveTo(Aright.p1);
+    f.polylineTo(Aright.ToPoints(boundsF,precision*2));
+    f.stroke;
+
+    // bounding box de l'arc en vert
+    R:=B2.GetBounds();
+    f.beginPath;
+    f.rect(round(R.Left)-1, round(R.Top)-1, round(R.Width)+2, round(R.Height)+2);
+    f.strokeStyle(BGRABlack);
+    f.lineWidth := 1;
+    f.stroke();
+  end;
+  Img.draw(Canvas,0,Panel1.Height)
+end;
+
+procedure TForm1.UpdateLength;
+var
+  len: Single;
+begin
+  len := B2.ComputeLength;
+  if len = EmptySingle then
+    Label1.caption:='Green arc length = infinity'
+  else
+    Label1.caption:='Green arc length = '+FloatToStrF(len, ffFixed, 7,1);
+  len := B.ComputeLength;
+  if len = EmptySingle then
+    Label2.caption:='Red arc length = infinity'
+  else
+    Label2.caption:='Red arc length = '+FloatToStrF(len, ffFixed, 7,1);
+end;
+
+end.
+