ImageEn, unit iexBitmaps




procedure RotateAll(Angle: double; AntialiasMode: TIEAntialiasMode = ierFast; BackgroundColor: TColor = clWhite);


Rotates all frames within the current image by the specified angle (negative or positive degrees counter-clockwise).

AntialiasMode specifies the anti-aliasing algorithm that is used to improve rotation quality:
  ierNone : No anti-aliasing (lowest quality)
  ierFast : Fast but lower quality
  ierBilinear : Bilinear, high quality
  ierBicubic : Bicubic, highest quality

BackgroundColor specifies a background color to fill new regions (i.e. when not rotating at a 90 degree angle)


// Rotate all images in a TImageEnMView 90 clockwise (Note: AntialiasMode is irrelevant for 90 deg. rotates)
ImageEnMView1.IEMBitmap.RotateAll( 270 );

// Rotate a TIFF file 90 counter-clockwise;
MBitmap := TIEMultiBitmap.create;
MBitmap.Read( 'D:\Doc.Tiff' );
MBitmap.RotateAll( 90 );
MBitmap.Write( 'D:\Doc.Tiff' );

// Rotate the image 45 clockwise at highest quality with a white background color
MBitmap.RotateAll( 315, ierBicubic, clWhite );

// Rotate the image 180 clockwise
MBitmap.RotateAll( 180 );

See Also

- AngleToImageEnRotateAngle