DelphiX 圖像處理：TDIB.SmoothRotateWrap 平滑旋轉並環繞填充

效果預覽

功能說明

TDIB.SmoothRotateWrap(Source: TDIB; CenterX, CenterY: Integer; Angle: Single) 以雙線性插值旋轉來源圖像，超出邊界區域以環繞 (Wrap) 方式填充 (類似鋪貼紋理)，避免黑邊。範例旋轉 15.5 度。

完整程式碼

unit Unit1;

interface
uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
     Dialogs, DIB, StdCtrls;

type
  TForm1 = class(TForm)
    DXPaintBox1: TDXPaintBox;
    Button1: TButton; Button2: TButton;
    procedure FormCreate(Sender: TObject);
    procedure FormDestroy(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  end;

var Form1: TForm1;

implementation
{$R *.dfm}

var Dib: TDIB;

procedure TForm1.FormCreate(Sender: TObject);
begin Dib := TDIB.Create; end;

procedure TForm1.FormDestroy(Sender: TObject);
begin Dib.Free; end;

procedure TForm1.Button1Click(Sender: TObject);
const ImgPath = 'C:\Temp\DX.jpg';
begin
  Dib.LoadFromFile(ImgPath);
  DXPaintBox1.DIB.Assign(Dib);
  DXPaintBox1.Width := Dib.Width; DXPaintBox1.Height := Dib.Height;
  DXPaintBox1.Repaint;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  DXPaintBox1.DIB.SmoothRotateWrap(Dib, Dib.Width div 2, Dib.Height div 2, 15.5);
  DXPaintBox1.DIB.Assign(Dib); DXPaintBox1.Repaint;
end;

end.