IG_FX_shear

This function applies a shearing effect to an image, moving the image rasters or columns according to the specified offsets.

Declaration:

	Copy Code
AT_ERRCOUNT ACCUAPI IG_FX_shear( HIGEAR hIGear, AT_DOUBLE* curvePoints, AT_INT pointCount, enumIGIPShearFillStyle fillStyle, AT_BOOL interpolate, AT_BOOL vertical, HIGPIXEL hbkColor );

Name	Type	Description
hIGear	HIGEAR	Image to which to apply shear effect.
curvePoints	AT_DOUBLE*	The array of offsets to move the image by. Every offset is in the range -1 to 1. Negative values shift the raster/column to the left, while positive values shift it to the right. The number of offsets is equal to the image width or height depending on the direction of movement (horizontal or vertical).
pointCount	AT_INT	Specifies curvePoints array length.
fillStyle	enumIGIPShearFillStyle	Specifies how the empty image area is filled.
interpolate	AT_BOOL	If TRUE, interpolation is used to smooth shifted pixel values.
vertical	AT_BOOL	If TRUE, the direction of motion is vertical. Otherwise, the direction is horizontal.
hbkColor	HIGPIXEL	Background color to use for filling empty image area. Only used if the specified fill style uses a fill color. It should have the same color space and channel depths as the image to which the effect is applied.

Returns the number of ImageGear errors that occurred during this function call.

All pixel formats supported by ImageGear for C and C++.

Image Processing

The fillStyle parameter can be set to one of the following values:

Name	Description
IG_IP_SHEAR_FILLCOLOR	Empty area is filled with the specified color.
IG_IP_SHEAR_NOCHANGE	Empty area remains unchanged.
IG_IP_SHEAR_REPEATEDGE	Empty area is filled with the first or last raster color.
IG_IP_SHEAR_REPEATRASTER	The raster is repeated periodically across the empty area.