ufoRasterGetPixelColAlpha

void ufoRasterGetPixelColAlpha(
   ufoRaster raster_instance,
   int x,
   int y,
   double* r,
   double* g,
   double* b,
   double* a);

ufoRasterGetPixelColAlpha returns the RGB-Alpha values for a pixel.

Values are normalized in the range (0..1).

Depending on the raster, the values returned are as follows:

ufoRasterGetPixelColAlpha

• Called on an RGB raster returns r=R, g=G, b=B, a=1

• Called on an A raster returns r=A, g=A, b=A, a=A

• Called on an RGBA raster returns r=R, g=G, b=B, a=A



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