Image noise: Difference between revisions
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MaiconSoft (talk | contribs) (Added Delphi example) |
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Generating random bits with the C core.stdc.stdlib.rand the performance becomes about the same of the C version. |
Generating random bits with the C core.stdc.stdlib.rand the performance becomes about the same of the C version. |
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=={{header|Delphi}}== |
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{{libheader| Winapi.Windows}} |
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{{libheader| System.SysUtils}} |
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{{libheader| Vcl.Forms}} |
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{{libheader| Vcl.Graphics}} |
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{{libheader| Vcl.Controls}} |
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{{libheader| System.Classes}} |
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{{libheader| Vcl.ExtCtrls}} |
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<lang Delphi> |
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unit Main; |
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interface |
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uses |
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Winapi.Windows, System.SysUtils, Vcl.Forms, Vcl.Graphics, Vcl.Controls, |
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System.Classes, Vcl.ExtCtrls; |
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type |
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TfmNoise = class(TForm) |
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tmr1sec: TTimer; |
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procedure FormCreate(Sender: TObject); |
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procedure FormDestroy(Sender: TObject); |
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procedure FormPaint(Sender: TObject); |
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procedure tmr1secTimer(Sender: TObject); |
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end; |
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var |
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fmNoise: TfmNoise; |
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Surface: TBitmap; |
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FrameCount: Cardinal = 0; |
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implementation |
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{$R *.dfm} |
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procedure TfmNoise.FormCreate(Sender: TObject); |
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begin |
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Surface := TBitmap.Create; |
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Surface.SetSize(320, 240); |
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Surface.PixelFormat := pf1bit; |
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Randomize; |
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end; |
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procedure TfmNoise.FormDestroy(Sender: TObject); |
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begin |
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Surface.Free; |
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end; |
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type |
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PDWordArray = ^TDWordArray; |
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TDWordArray = array[0..16383] of DWord; |
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procedure TfmNoise.FormPaint(Sender: TObject); |
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var |
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x, y: Integer; |
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line: PWordArray; |
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begin |
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with Surface do |
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for y := 0 to Height - 1 do |
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begin |
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line := Surface.ScanLine[y]; |
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for x := 0 to (Width div 16) - 1 do |
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line[x] := Random($FFFF); |
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// Fill 16 pixels at same time |
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end; |
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Canvas.Draw(0, 0, Surface); |
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Inc(FrameCount); |
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Application.ProcessMessages; |
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Invalidate; |
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end; |
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procedure TfmNoise.tmr1secTimer(Sender: TObject); |
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begin |
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Caption := 'FPS: ' + FrameCount.ToString; |
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FrameCount := 0; |
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end; |
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end.</lang> |
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Resources form: |
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<lang Delphi> |
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object fmNoise: TfmNoise |
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Left = 0 |
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Top = 0 |
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BorderIcons = [biSystemMenu] |
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BorderStyle = bsSingle |
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Caption = 'fmNoise' |
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ClientHeight = 240 |
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ClientWidth = 320 |
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OnCreate = FormCreate |
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OnDestroy = FormDestroy |
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OnPaint = FormPaint |
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object tmr1sec: TTimer |
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Interval = 2000 |
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OnTimer = tmr1secTimer |
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end |
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end |
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</lang> |
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{{out}} |
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<pre> |
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1400 to 1600 FPS |
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</pre> |
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=={{header|Euler Math Toolbox}}== |
=={{header|Euler Math Toolbox}}== |
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