Adds an example for testing motion graphics

git-svn-id: trunk@34346 -

.gitattributes

@@ -3804,6 +3804,12 @@ examples/messages/uasynccall.lfm svneol=native#text/plain
 examples/messages/uasynccall.pas svneol=native#text/plain
 examples/messages/unit1.lfm svneol=native#text/plain
 examples/messages/unit1.pas svneol=native#text/pascal
+examples/motiongraphics/mainform.lfm svneol=native#text/plain
+examples/motiongraphics/mainform.pas svneol=native#text/pascal
+examples/motiongraphics/motiongraphics.ico -text
+examples/motiongraphics/motiongraphics.lpi svneol=native#text/plain
+examples/motiongraphics/motiongraphics.lpr svneol=native#text/pascal
+examples/motiongraphics/motiongraphics.res -text
 examples/multithreading/criticalsectionexample1.lpi svneol=native#text/plain
 examples/multithreading/criticalsectionexample1.lpr svneol=native#text/plain
 examples/multithreading/criticalsectionunit1.lfm svneol=native#text/plain

examples/motiongraphics/mainform.lfm

@@ -0,0 +1,37 @@
+object Form1: TForm1
+  Left = 323
+  Height = 240
+  Top = 171
+  Width = 320
+  Caption = 'Motion Graphics Test'
+  ClientHeight = 240
+  ClientWidth = 320
+  OnPaint = FormPaint
+  LCLVersion = '0.9.31'
+  object Label1: TLabel
+    Left = 6
+    Height = 18
+    Top = 6
+    Width = 46
+    Caption = 'Speed:'
+    ParentColor = False
+  end
+  object trackSpeed: TTrackBar
+    Left = 56
+    Height = 31
+    Top = 8
+    Width = 256
+    Frequency = 10
+    Max = 100
+    Min = 10
+    OnChange = trackSpeedChange
+    Position = 30
+    TabOrder = 0
+  end
+  object timerRedraw: TTimer
+    Interval = 100
+    OnTimer = timerRedrawTimer
+    left = 99
+    top = 133
+  end
+end

examples/motiongraphics/mainform.pas

@@ -0,0 +1,95 @@
+unit mainform;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, ExtCtrls,
+  StdCtrls, ComCtrls;
+
+type
+
+  { TForm1 }
+
+  TForm1 = class(TForm)
+    Label1: TLabel;
+    timerRedraw: TTimer;
+    trackSpeed: TTrackBar;
+    procedure FormPaint(Sender: TObject);
+    procedure timerRedrawTimer(Sender: TObject);
+    procedure trackSpeedChange(Sender: TObject);
+  private
+    { private declarations }
+  public
+    { public declarations }
+    CurStep: Double;
+    procedure RotatePolygon(var APoints: array of TPoint; AAngle: Double);
+    function RotatePoint(APoint, ACenter: TPoint; AAngle: Double): TPoint;
+  end;
+
+var
+  Form1: TForm1; 
+
+implementation
+
+{$R *.lfm}
+
+{ TForm1 }
+
+procedure TForm1.timerRedrawTimer(Sender: TObject);
+begin
+  CurStep := CurStep + 0.1;
+  if CurStep > 360 then CurStep := 0;
+  Form1.Invalidate;
+end;
+
+procedure TForm1.trackSpeedChange(Sender: TObject);
+begin
+  timerRedraw.Interval := 1000 div trackSpeed.Position;
+end;
+
+procedure TForm1.RotatePolygon(var APoints: array of TPoint; AAngle: Double);
+var
+  lCenter: TPoint;
+  i: Integer;
+begin
+  lCenter := Point(0, 0);
+  for i := 0 to Length(APoints)-1 do
+  begin
+    lCenter.X := lCenter.X + APoints[i].X;
+    lCenter.Y := lCenter.Y + APoints[i].Y;
+  end;
+  lCenter.X := lCenter.X div Length(APoints);
+  lCenter.Y := lCenter.Y div Length(APoints);
+
+  for i := 0 to Length(APoints)-1 do
+    APoints[i] := RotatePoint(APoints[i], lCenter, AAngle);
+end;
+
+function TForm1.RotatePoint(APoint, ACenter: TPoint; AAngle: Double): TPoint;
+var
+  dx, dy: Double;
+begin
+  dx := (ACenter.Y * Sin(AAngle)) - (ACenter.X * Cos(AAngle)) + ACenter.X;
+  dy := -(ACenter.X * Sin(AAngle)) - (ACenter.Y * Cos(AAngle)) + ACenter.Y;
+  Result.X := Round((APoint.X * Cos(AAngle)) - (APoint.Y * Sin(AAngle)) + dx);
+  Result.Y := Round((APoint.X * Sin(AAngle)) + (APoint.Y * Cos(AAngle)) + dy);
+end;
+
+procedure TForm1.FormPaint(Sender: TObject);
+var
+  lPoints: array[0..2] of TPoint;
+begin
+  lPoints[0].X := 100;
+  lPoints[0].Y := 100;
+  lPoints[1].X := 200;
+  lPoints[1].Y := 0;
+  lPoints[2].X := 200;
+  lPoints[2].Y := 200;
+  RotatePolygon(lPoints, CurStep);
+  Canvas.Polygon(lPoints);
+end;
+
+end.
+

examples/motiongraphics/motiongraphics.lpi

@@ -0,0 +1,90 @@
+<?xml version="1.0"?>
+<CONFIG>
+  <ProjectOptions>
+    <Version Value="9"/>
+    <General>
+      <SessionStorage Value="InProjectDir"/>
+      <MainUnit Value="0"/>
+      <ResourceType Value="res"/>
+      <UseXPManifest Value="True"/>
+      <Icon Value="0"/>
+    </General>
+    <i18n>
+      <EnableI18N LFM="False"/>
+    </i18n>
+    <VersionInfo>
+      <StringTable ProductVersion=""/>
+    </VersionInfo>
+    <MacroValues Count="1">
+      <Macro1 Name="LCLWidgetType" Value="customdrawn"/>
+    </MacroValues>
+    <BuildModes Count="1">
+      <Item1 Name="Default" Default="True"/>
+    </BuildModes>
+    <PublishOptions>
+      <Version Value="2"/>
+      <IncludeFileFilter Value="*.(pas|pp|inc|lfm|lpr|lrs|lpi|lpk|sh|xml)"/>
+      <ExcludeFileFilter Value="*.(bak|ppu|o|so);*~;backup"/>
+    </PublishOptions>
+    <RunParams>
+      <local>
+        <FormatVersion Value="1"/>
+      </local>
+    </RunParams>
+    <RequiredPackages Count="1">
+      <Item1>
+        <PackageName Value="LCL"/>
+      </Item1>
+    </RequiredPackages>
+    <Units Count="2">
+      <Unit0>
+        <Filename Value="motiongraphics.lpr"/>
+        <IsPartOfProject Value="True"/>
+        <UnitName Value="motiongraphics"/>
+      </Unit0>
+      <Unit1>
+        <Filename Value="mainform.pas"/>
+        <IsPartOfProject Value="True"/>
+        <ComponentName Value="Form1"/>
+        <ResourceBaseClass Value="Form"/>
+        <UnitName Value="mainform"/>
+      </Unit1>
+    </Units>
+  </ProjectOptions>
+  <CompilerOptions>
+    <Version Value="11"/>
+    <Target>
+      <Filename Value="motiongraphics"/>
+    </Target>
+    <SearchPaths>
+      <IncludeFiles Value="$(ProjOutDir)"/>
+      <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
+    </SearchPaths>
+    <Linking>
+      <Options>
+        <Win32>
+          <GraphicApplication Value="True"/>
+        </Win32>
+      </Options>
+    </Linking>
+    <Other>
+      <CompilerMessages>
+        <UseMsgFile Value="True"/>
+      </CompilerMessages>
+      <CompilerPath Value="$(CompPath)"/>
+    </Other>
+  </CompilerOptions>
+  <Debugging>
+    <Exceptions Count="3">
+      <Item1>
+        <Name Value="EAbort"/>
+      </Item1>
+      <Item2>
+        <Name Value="ECodetoolError"/>
+      </Item2>
+      <Item3>
+        <Name Value="EFOpenError"/>
+      </Item3>
+    </Exceptions>
+  </Debugging>
+</CONFIG>

examples/motiongraphics/motiongraphics.lpr

@@ -0,0 +1,21 @@
+program motiongraphics;
+
+{$mode objfpc}{$H+}
+
+uses
+  {$IFDEF UNIX}{$IFDEF UseCThreads}
+  cthreads,
+  {$ENDIF}{$ENDIF}
+  Interfaces, // this includes the LCL widgetset
+  Forms, mainform
+  { you can add units after this };
+
+{$R *.res}
+
+begin
+  RequireDerivedFormResource := True;
+  Application.Initialize;
+  Application.CreateForm(TForm1, Form1);
+  Application.Run;
+end.
+