mirror of
https://gitlab.com/freepascal.org/lazarus/lazarus.git
synced 2025-05-03 11:45:19 +02:00
78 lines
1.7 KiB
ObjectPascal
78 lines
1.7 KiB
ObjectPascal
unit Main;
|
|
|
|
{$mode objfpc}{$H+}
|
|
|
|
interface
|
|
|
|
uses
|
|
Classes, OpenGLContext, SysUtils, FileUtil, Forms, Controls, Graphics,
|
|
Dialogs, ExtCtrls, TAGraph, TASeries, TASources, GL, GLU;
|
|
|
|
type
|
|
|
|
{ TForm1 }
|
|
|
|
TForm1 = class(TForm)
|
|
Bevel1: TBevel;
|
|
Chart1: TChart;
|
|
Chart1BarSeries1: TBarSeries;
|
|
Chart1LineSeries1: TLineSeries;
|
|
Chart1PieSeries1: TPieSeries;
|
|
OpenGLControl1: TOpenGLControl;
|
|
RandomChartSource1: TRandomChartSource;
|
|
procedure Chart1AfterPaint(ASender: TChart);
|
|
procedure FormCreate(Sender: TObject);
|
|
procedure OpenGLControl1Paint(Sender: TObject);
|
|
end;
|
|
|
|
var
|
|
Form1: TForm1;
|
|
|
|
implementation
|
|
|
|
{$R *.lfm}
|
|
|
|
uses
|
|
TADrawUtils, TADrawerOpenGL, TADrawerCanvas;
|
|
|
|
procedure TForm1.Chart1AfterPaint(ASender: TChart);
|
|
begin
|
|
OpenGLControl1.Invalidate;
|
|
end;
|
|
|
|
procedure TForm1.FormCreate(Sender: TObject);
|
|
begin
|
|
// If the text engine does not find the fonts needed for the OpenGL output
|
|
// copy the fonts to the exe folder and uncomment the next line
|
|
// Requires TAFonts in "uses"
|
|
|
|
//InitFonts(ExtractFilePath(ParamStr(0)));
|
|
end;
|
|
|
|
procedure TForm1.OpenGLControl1Paint(Sender: TObject);
|
|
var
|
|
d: IChartDrawer;
|
|
begin
|
|
glClearColor(1.0, 1.0, 1.0, 1.0);
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
with OpenGLControl1 do
|
|
gluOrtho2D(0, Width, Height, 0);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
glLoadIdentity();
|
|
|
|
d := TOpenGLDrawer.Create;
|
|
d.DoChartColorToFPColor := @ChartColorSysToFPColor;
|
|
Chart1.DisableRedrawing;
|
|
Chart1.Title.Text.Text := 'OpenGL';
|
|
Chart1.Draw(d, Rect(0, 0, OpenGLControl1.Width, OpenGLControl1.Height));
|
|
Chart1.Title.Text.Text := 'Standard';
|
|
Chart1.EnableRedrawing;
|
|
|
|
OpenGLControl1.SwapBuffers;
|
|
end;
|
|
|
|
end.
|
|
|