Delphi與DirectX之DelphiX(15)

此類函數有:
TPictureCollectionItem.DrawWaveX();
TPictureCollectionItem.DrawWaveXAdd();
TPictureCollectionItem.DrawWaveXAlpha();
TPictureCollectionItem.DrawWaveXSub();
TPictureCollectionItem.DrawWaveY();
TPictureCollectionItem.DrawWaveYAdd();
TPictureCollectionItem.DrawWaveYAlpha();
TPictureCollectionItem.DrawWaveYSub();

本例僅使用了 DrawWaveX、DrawWaveY, 效果圖:

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;
　　Edit1: TEdit;
　　CheckBox1: TCheckBox;
　　procedure FormCreate(Sender: TObject);
　　procedure DXTimer1Timer(Sender: TObject; LagCount: Integer);
　　procedure Edit1Change(Sender: TObject);
　　procedure CheckBox1Click(Sender: TObject);
　end;
var
　Form1: TForm1;
implementation
{$R *.dfm}
const
　arr: array[0..31] of Smallint =
　　(-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,7,6,5,4,3,2,-1,0,-1,-2,-3,-4,-5,-6,-7);
var
　PicItem: TPictureCollectionItem;
　amp,len: Integer;
procedure TForm1.Edit1Change(Sender: TObject);
begin
　len := StrToIntDef(Edit1.Text, 0);
end;
procedure TForm1.FormCreate(Sender: TObject);
const
　ImgPath1 = 'C:\Temp\DelphiX.bmp';
begin
　DXImageList1.DXDraw := DXDraw1;
　PicItem := TPictureCollectionItem(DXImageList1.Items.Add);
　PicItem.Picture.LoadFromFile(ImgPath1);
　DXDraw1.Align := alClient;
　DXTimer1.Interval := 30;
　Edit1.Text := '60';
　Edit1Change(nil);
　CheckBox1.Checked := True;
　CheckBox1.Caption := 'DrawWaveX';
end;
procedure TForm1.CheckBox1Click(Sender: TObject);
const
　bs: array[Boolean] of string = ('DrawWaveY', 'DrawWaveX');
begin
　CheckBox1.Caption := bs[CheckBox1.Checked];
end;
procedure TForm1.DXTimer1Timer(Sender: TObject; LagCount: Integer);
begin
　DXDraw1.Surface.Fill(0);
　if CheckBox1.Checked then
　　PicItem.DrawWaveX(DXDraw1.Surface,
　　　　　　　　　　 (DXDraw1.Width - PicItem.Width) div 2, (DXDraw1.Height - PicItem.Height) div 2,
　　　　　　　　　　　 PicItem.Width, PicItem.Height,
　　　　　　　　　　　 0,
　　　　　　　　　　　 arr[amp and 31],
　　　　　　　　　　　 len,
　　　　　　　　　　　 0)
　 else
　　 PicItem.DrawWaveY(DXDraw1.Surface,
　　　　　　　　　　 (DXDraw1.Width - PicItem.Width) div 2, (DXDraw1.Height - PicItem.Height) div 2,
　　　　　　　　　　　 PicItem.Width, PicItem.Height,
　　　　　　　　　　　 0,
　　　　　　　　　　　arr[amp and 31],
　　　　　　　　　　　len,
　　　　　　　　　　　0);
　DXDraw1.Flip;
　Inc(amp);
end;
end.

窗體文件:

object Form1: TForm1
　Left = 0
　Top = 0
　Caption = 'Form1'
　ClientHeight = 154
　ClientWidth = 259
　Color = clBtnFace
　Font.Charset = DEFAULT_CHARSET
　Font.Color = clWindowText
　Font.Height = -11
　Font.Name = 'Tahoma'
　Font.Style = []
　OldCreateOrder = False
　OnCreate = FormCreate
　PixelsPerInch = 96
　TextHeight = 13
　object DXDraw1: TDXDraw
　　Left = 8
　　Top = 8
　　Width = 185
　　Height = 121
　　AutoInitialize = True
　　AutoSize = True
　　Color = clBlack
　　Display.FixedBitCount = False
　　Display.FixedRatio = True
　　Display.FixedSize = True
　　Options = [doAllowReboot, doWaitVBlank, doCenter, do3D, doDirectX7Mode, doHardware, doSelectDriver]
　　SurfaceHeight = 121
　　SurfaceWidth = 185
　　TabOrder = 0
　　Traces = <>
　end
　object Edit1: TEdit
　　Left = 212
　　Top = 125
　　Width = 38
　　Height = 21
　　TabOrder = 1
　　Text = 'Edit1'
　　OnChange = Edit1Change
　end
　object CheckBox1: TCheckBox
　　Left = 120
　　Top = 129
　　Width = 86
　　Height = 17
　　Caption = 'CheckBox1'
　　TabOrder = 2
　　OnClick = CheckBox1Click
　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 = 224
　　Top = 8
　end
　object DXTimer1: TDXTimer
　　ActiveOnly = True
　　Enabled = True
　　Interval = 1000
　　OnTimer = DXTimer1Timer
　　Left = 224
　　Top = 48
　end
end