imageShear

Shears an image either horizontally or vertically.

imageShear(name, shear [, direction] [, interpolation]) → returns void

Member Function Syntax

someImage.shear(shear [, direction] [, interpolation])

Argument Reference for the imageShear function

name

Required: Yes
The image on which this operation is performed.

shear

Required: Yes
Shear value. Coordinates can be integers or real numbers.

direction

Required: No
Default: horizontal
Shear direction Values:
  • horizontal
  • vertical

interpolation

Required: No
Default: nearest
Type of interpolation Values:
  • nearest: Applies the nearest neighbor method of interpolation. Image quality is lower than the other interpolation methods, but processing is fastest.
  • bilinear: Applies the bilinear method of interpolation. The quality of the image is less pixelated than the default, but processing is slower.
  • bicubic: Applies the bicubic method of interpolation. Generally, the quality of image is highest with this method and processing is slowest.

Examples sample code invoking the imageShear function


Using shear member function

CF 11+ Shear the image by a factor of 1 on a horizontal axis

imgObj = imageRead("http://cfdocs.org/apple-touch-icon.png");
imgObj.shear(1);
cfimage(action="writeToBrowser", source=imgObj);

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