# cdCanvasGetImageRGB

Definition: | include pGUI.e sequence {r,g,b} = cdCanvasGetImageRGB(cdCanvas canvas, atom x, y, w, h) -- or -- sequence {r,g,b} = wdCanvasGetImageRGB(cdCanvas canvas, atom x, y, w, h)
Description: | Returns the red, green and blue components of each pixel in a server image. The RGB components are provided in three matrices stored as byte arrays. The (i,j) component of these matrices is at the address (j*w+i). As occurs with all primitives from the Canvas Draw library, the pixel (0,0) is at the bottom left corner, and the pixel (w-1,h-1) is that the upper right corner of the image rectangle.
pwa/p2js: | Supported, but not the world coordinates version.