Delphi 与 DirectX 之 DelphiX(1): 安装测试

测试 Demo 下载: https://files.cnblogs.com/del/DelphiX_1.rar (在 Delphi 2007 和 2009 下均编译通过)

其实按照 这里 的介绍, 比下载来的快, 也不需要下载.

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DirectX, 微软很久的技术了; 从 Windows Vista 开始, DirectX 已经是微软操作系统的界面基础了.

在 Delphi 下使用 DirectX 比较流行的有下面四种方式:
DelphiX
DSPack
Asphyre (?)
Delphi DirectX

DelphiX 是最早的(十年了), 也是最简单的, 也是和 Delphi 结合最密切的;
但为了入手简单, 准备从 DelphiX 开始, 先有个宏观概念, 同时也学习一下 DelphiX 构造手法;
不过, 我想最终使用的应该是: Delphi DirectX.

DelphiX 从 2000.07.17 就没在更新过, 不过另有热心的支持者一直维护着, 甚至让它支持了 Delphi 2009.
我现在使用的版本是从这里下载的: http://www.micrel.cz/Dx/
使用了它的自动安装文件: http://www.micrel.cz/Dx/download/install.exe

尽管介绍是支持 Delphi 2009, 我还是发现了很多问题; 经过修正最后在 2009 下能用了.
但很多例子并不支持 2009, 因为在 2007 下要稳定得多, 所以选择在 Delphi 2007 下学习 DelphiX; 同时争取让代码兼容 2009.

为了保证运行所有的例子, 还需要把 DelphiXcfg.inc 的倒数第二行的 {.$Define D3DRM} 改为 {$Define D3DRM}
另外, 因为有些日文的注释乱码, 也会让有些例子运行不了, 修改下乱码的地方即可.
目前我抽样测试了一些, 都没问题了.

总感觉学晚了, 争取尽快超越它!

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先从网上学了个例子, 作为开盘测试吧:

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本例效果图:

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代码文件:

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unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DXDraws, StdCtrls, DXClass;

type
  TForm1 = class(TDXForm)
    DXDraw1: TDXDraw;
    DXTimer1: TDXTimer;
    DXImageList1: TDXImageList;
    procedure FormCreate(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure DXDraw1Initialize(Sender: TObject);
    procedure DXDraw1Finalize(Sender: TObject);
    procedure DXTimer1Timer(Sender: TObject; LagCount: Integer);
  private
    procedure CalculateTables;
    procedure PlotPoint(XCenter, YCenter, Radius, Angle: Word);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

var
  SineMove: array[0..255] of integer;
  CosineMove: array[0..255] of integer;
  SineTable: array[0..449] of integer;
  CenterX, CenterY: Integer;
  x: Word = 0;
  y: Word = 0;

procedure TForm1.CalculateTables;
var
  wCount: Word;
begin
  for wCount := 0 to 255 do
  begin
    SineMove[wCount] := round( sin( pi*wCount/128 ) * 45 );
    CosineMove[wCount] := round( cos( pi*wCount/128 ) * 60 );
  end; 
  for wCount := 0 to 449 do
  begin
    SineTable[wCount] := round( sin( pi*wCount/180 ) * 128);
  end;
end;

procedure TForm1.PlotPoint(XCenter, YCenter, Radius, Angle: Word);
var 
  a, b : Word;
begin
  a := ( Radius * SineTable[90 + Angle]);
  asm
    sar a,7
  end;
  a := CenterX + XCenter + a;
  b := ( Radius * SineTable[Angle] );
  asm
    sar b,7
  end;
  b := CenterY + YCenter + b;
  if (a < Width ) and ( b < Height ) then
  begin
    DXImageList1.Items[0].Draw(DXDraw1.Surface, a, b, 0 );
  end;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  DXDraw1.Align := alClient;
  CenterX := Width div 2;
  CenterY := Height div 2;
  CalculateTables;
end;

procedure TForm1.DXDraw1Finalize(Sender: TObject);
begin
  DXTimer1.Enabled := False;
end;

procedure TForm1.DXDraw1Initialize(Sender: TObject);
begin
  DXTimer1.Enabled := True;
end;

procedure TForm1.DXTimer1Timer(Sender: TObject; LagCount: Integer);
const
  IncAngle = 12;
  XMove = 7;
  YMove = 8;
var
  CountAngle : Word;
  CountLong : Word;
  IncLong :Word;
begin
  if not DXDraw1.CanDraw then exit;
  IncLong := 2; 
  CountLong := 20; 
  DXDraw1.Surface.Fill(0);

  repeat
    CountAngle := 0;
    repeat
      PlotPoint(CosineMove[(x + (200 - CountLong)) mod 255],
                SineMove[(y + (200 - CountLong)) mod 255], CountLong, CountAngle);
      Inc(CountAngle, IncAngle);
    until CountAngle >= 360;

    inc(CountLong, IncLong);
    if (CountLong mod 3) = 0 then 
    begin
      inc(IncLong);
    end;
  until CountLong >= 270;

  x := XMove + x mod 255;
  y := YMove + y mod 255;

  with DXDraw1.Surface.Canvas do
  begin
    Brush.Style := bsClear; 
    Font.Color := clWhite;
    Font.Size := 12;
    Textout(0, 0, 'FPS: '+inttostr( DXTimer1.FrameRate)); { 录制动画是丢了这句 }
    Release;
  end;
  DXDraw1.Flip;
end;

procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if Key = VK_ESCAPE then Close;
end;

end.

窗体文件:

---

object Form1: TForm1
  Left = 0
  Top = 0
  Caption = 'Form1'
  ClientHeight = 206
  ClientWidth = 339
  Color = clBtnFace
  Font.Charset = DEFAULT_CHARSET
  Font.Color = clWindowText
  Font.Height = -11
  Font.Name = 'Tahoma'
  Font.Style = []
  OldCreateOrder = False
  OnCreate = FormCreate
  OnKeyDown = FormKeyDown
  PixelsPerInch = 96
  TextHeight = 13
  object DXDraw1: TDXDraw
    Left = 8
    Top = 8
    Width = 249
    Height = 177
    AutoInitialize = True
    AutoSize = True
    Color = clBlack
    Display.FixedBitCount = False
    Display.FixedRatio = True
    Display.FixedSize = True
    Options = [doAllowReboot, doWaitVBlank, doCenter, do3D, doDirectX7Mode, doHardware, doSelectDriver]
    SurfaceHeight = 177
    SurfaceWidth = 249
    OnFinalize = DXDraw1Finalize
    OnInitialize = DXDraw1Initialize
    TabOrder = 0
    Traces = <
      item
        Name = 'aaa'
        Active = True
        Tag = 0
        Blit.Active = True
        Blit.Z = 0
        Blit.Width = 0
        Blit.Height = 0
        Blit.Paths = {
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          0000001900000000000000000000000000000000000000000000000000000000
          00000000B0C077050080984300002D4300000000190000000000000000000000
          00000000000000000000000000000000000000000070C2770500809043000035
          4300000000190000000000000000000000000000000000000000000000000000
          00000000000030C477050000874300003B430000000019000000000000000000
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          000000000000000000000000809B40070000174300002D430000000019000000
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          0000000000000000000000000000009F40070000FE4200001843000000001900
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          0040A440070000F2420000E44200000000190000000000000000000000000000
          00000000000000000000000000000000000000A640070000FE420000CC420000
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          000000C0A74007000009430000B6420000000019000000000000000000000000
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      end>
  end
  object DXTimer1: TDXTimer
    ActiveOnly = True
    Enabled = False
    Interval = 10
    OnTimer = DXTimer1Timer
    Left = 160
    Top = 104
  end
  object DXImageList1: TDXImageList
    DXDraw = DXDraw1
    Items.ColorTable = {
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    Items = <
      item
        PatternHeight = 0
        PatternWidth = 0
        Picture.Data = {
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        SystemMemory = False
        Transparent = True
        TransparentColor = clWhite
      end>
    Left = 192
    Top = 96
  end
end