Name
gl.PixelZoom -- specify the pixel zoom factors
Synopsis
gl.PixelZoom(xfactor, yfactor)
Function
gl.PixelZoom() specifies values for the x and y zoom factors. During the execution of gl.DrawPixels() or gl.CopyPixels(), if (xr,yr) is the current raster position, and a given element is in the mth row and nth column of the pixel rectangle, then pixels whose centers are in the rectangle with corners at

 
(xr+n*xfactor, yr+m*yfactor)
(xr+(n+1)*xfactor,yr+(m+1)*yfactor)

are candidates for replacement. Any pixel whose center lies on the bottom or left edge of this rectangular region is also modified.

Pixel zoom factors are not limited to positive values. Negative zoom factors reflect the resulting image about the current raster position.

Please consult an OpenGL reference manual for more information.

Inputs
xfactor
specify the x zoom factor for pixel write operations
yfactor
specify the y zoom factor for pixel write operations
Errors
#GL_INVALID_OPERATION is generated if glPixelZoom is executed between the execution of gl.Begin() and the corresponding execution of gl.End().

Associated gets
gl.Get() with argument #GL_ZOOM_X

gl.Get() with argument #GL_ZOOM_Y


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