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 程式師世界 >> 編程語言 >> 更多編程語言 >> Delphi >> Delphi 與 DirectX 之 DelphiX(84): TDIB.InitLight()、DrawLights();

Delphi 與 DirectX 之 DelphiX(84): TDIB.InitLight()、DrawLights();

編輯:Delphi

本例效果圖:

  代碼文件:

unit Unit1;
interface
uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, DIB, StdCtrls;
type
 TForm1 = class(TForm)
  DXPaintBox1: TDXPaintBox;
  procedure FormCreate(Sender: TObject);
  procedure FormDestroy(Sender: TObject);
  procedure DXPaintBox1MouseMove(Sender: TObject; Shift: TShiftState; X,
   Y: Integer);
 end;
var
 Form1: TForm1;
implementation
{$R *.dfm}
var
 dib: TDIB;
procedure TForm1.DXPaintBox1MouseMove(Sender: TObject; Shift: TShiftState; X,
 Y: Integer);
var
 a: TLightArray;
begin
 DXPaintBox1.DIB.Assign(dib);
 SetLength(a, 1);
 a[0].X := X;
 a[0].Y := Y;
 a[0].Size1 := 4;
 a[0].Size2 := 4;
 a[0].Color := clWhite;
 DXPaintBox1.DIB.InitLight(1, 1);
 DXPaintBox1.DIB.DrawLights(a, clBlack);
 DXPaintBox1.Repaint;
end;
procedure TForm1.FormCreate(Sender: TObject);
const
 ImgPath1 = 'C:TempDX.jpg';
begin
 dib := TDIB.Create;
 dib.LoadFromFile(ImgPath1);
 DXPaintBox1.DIB.Assign(dib);
 DXPaintBox1.Width := dib.Width;
 DXPaintBox1.Height := dib.Height;
 DXPaintBox1.Repaint;
end;
procedure TForm1.FormDestroy(Sender: TObject);
begin
 dib.Free;
end;
end.

  窗體文件:

object Form1: TForm1
 Left = 0
 Top = 0
 Caption = 'Form1'
 ClIEntHeight = 142
 ClIEntWidth = 177
 Color = clBtnFace
 Font.Charset = DEFAULT_CHARSET
 Font.Color = clWindowText
 Font.Height = -11
 Font.Name = 'Tahoma'
 Font.Style = []
 OldCreateOrder = False
 OnCreate = FormCreate
 OnDestroy = FormDestroy
 PixelsPerInch = 96
 TextHeight = 13
 object DXPaintBox1: TDXPaintBox
  Left = 8
  Top = 8
  Width = 129
  Height = 126
  AutoStretch = False
  Center = False
  KeepASPect = False
  Stretch = False
  VIEwWidth = 0
  VIEwHeight = 0
  OnMouseMove = DXPaintBox1MouseMove
 end
end


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