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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(8): 第一個簡單動畫

Delphi 與 DirectX 之 DelphiX(8): 第一個簡單動畫

編輯:Delphi

本例效果圖(用 gif 動畫演示, 無論如何也出不來 DirectX 的流暢效果):

  代碼文件:

unit Unit1;
interface
uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, DXDraws, StdCtrls, DXClass;
type
 TForm1 = class(TForm)
  DXDraw1: TDXDraw;
  DXImageList1: TDXImageList;
  DXTimer1: TDXTimer;
  Button1: TButton;
  Button2: TButton;
  procedure FormCreate(Sender: TObject);
  procedure DXTimer1Timer(Sender: TObject; LagCount: Integer);
  procedure Button1Click(Sender: TObject);
  procedure Button2Click(Sender: TObject);
 end;
var
 Form1: TForm1;
implementation
{$R *.dfm}
var
 arr: array of record X,Y,a,b: Integer; end;
 PicItem: TPictureCollectionItem;
procedure TForm1.FormCreate(Sender: TObject);
const
 ImgPath1 = 'C:TempDelphiX.bmp';
begin
 DXDraw1.Align := alClIEnt;
 DXImageList1.DXDraw := DXDraw1;
 DXImageList1.Items.Add;
 PicItem := DXImageList1.Items[DXImageList1.Items.Count-1];
 PicItem.Picture.LoadFromFile(ImgPath1);
 SetLength(arr, 1);
 arr[0].X := Random(DXDraw1.Width - PicItem.Width);
 arr[0].Y := Random(DXDraw1.Height - PicItem.Height);
 arr[0].a := 1;
 arr[0].b := 1;
 Button1.Caption := '-';
 Button2.Caption := '+';
 DXTimer1.Interval := 10;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
 if Length(arr) > 1 then SetLength(arr, Length(arr)-1);
end;
procedure TForm1.Button2Click(Sender: TObject);
begin
 SetLength(arr, Length(arr)+1);
 arr[High(arr)].X := Random(DXDraw1.Width - PicItem.Width);
 arr[High(arr)].Y := Random(DXDraw1.Height - PicItem.Height);
 arr[High(arr)].a := 1;
 arr[High(arr)].b := 1;
end;
procedure TForm1.DXTimer1Timer(Sender: TObject; LagCount: Integer);
var
 i: Integer;
begin
 DXDraw1.Surface.Fill(0);
 for i := 0 to Length(arr) - 1 do
 begin
  if arr[i].X > DXDraw1.Width - PicItem.Width then arr[i].a := -1;
  if arr[i].Y > DXDraw1.Height - PicItem.Height then arr[i].b := -1;
  if arr[i].X = 0 then arr[i].a := 1;
  if arr[i].Y = 0 then arr[i].b := 1;
  Inc(arr[i].X, arr[i].a);
  Inc(arr[i].Y, arr[i].b);
  PicItem.Draw(DXDraw1.Surface, arr[i].X, arr[i].Y, 0);
 end;
 DXDraw1.Flip;
end;
end.


 

 窗體文件:

object Form1: TForm1
 Left = 0
 Top = 0
 Caption = 'Form1'
 ClIEntHeight = 250
 ClIEntWidth = 384
 Color = clBtnFace
 Font.Charset = DEFAULT_CHARSET
 Font.Color = clWindowText
 Font.Height = -11
 Font.Name = 'Tahoma'
 Font.Style = []
 OldCreateOrder = False
 OnCreate = FormCreate
 DesignSize = (
  384
  250)
 PixelsPerInch = 96
 TextHeight = 13
 object DXDraw1: TDXDraw
  Left = 8
  Top = 8
  Width = 265
  Height = 137
  AutoInitialize = True
  AutoSize = True
  Color = clBlack
  Display.FixedBitCount = False
  Display.FixedRatio = True
  Display.FixedSize = True
  Options = [doAllowReboot, doWaitVBlank, doCenter, do3D, doDirectX7Mode, doHardware, DOSelectDriver]
  SurfaceHeight = 137
  SurfaceWidth = 265
  TabOrder = 0
  Traces = <>
 end
 object Button1: TButton
  Left = 321
  Top = 217
  Width = 24
  Height = 25
  Anchors = [akRight, akBottom]
  Caption = 'Button1'
  TabOrder = 1
  OnClick = Button1Click
  ExplicitLeft = 344
  ExplicitTop = 232
 end
 object Button2: TButton
  Left = 351
  Top = 217
  Width = 25
  Height = 25
  Anchors = [akRight, akBottom]
  Caption = 'Button2'
  TabOrder = 2
  OnClick = Button2Click
  ExplicitLeft = 374
  ExplicitTop = 232
 end
 object DXImageList1: TDXImageList
  Items.ColorTable = {
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000
   0000000000000000000000000000000000000000000000000000000000000000}
  Items = <>
  Left = 40
  Top = 152
 end
 object DXTimer1: TDXTimer
  ActiveOnly = True
  Enabled = True
  Interval = 1000
  OnTimer = DXTimer1Timer
  Left = 8
  Top = 152
 end
end


 

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