TIEMultiBitmap.RotateAll

Declaration

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

Description

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 (only used when angle is NOT 90, 180 or 270):

Value	Description
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)

Anti-alias Modes

Examples

// 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.LoadFromFile( 'D:\Doc.Tiff' );
MBitmap.RotateAll( 90 );
MBitmap.SaveToFile( 'D:\Doc.Tiff' );
MBitmap.Free;

// 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 );

TIEMultiBitmap.RotateAll