photobot.Layer.pixels.update()
Syntax
canvas.layers[i].pixels.update()
Description
Updates the pixels array of layer i after it has been modified. To save time, changes to the Layer.pixels[] pixels array only take effect after calling this command.
Example
Remove all white pixels from the given image, with a feather at the edges of white areas:
photobot = ximport("photobot")
canvas = photobot.canvas(200,200)
canvas.layer("smurf.gif")
w = canvas.layers[1].w
feather = [-w-1, -w, -w+1, -1, 1, w-1, w, w+1]
pixels = canvas.layers[1].pixels
for i in range(len(pixels)):
r, g, b, a = pixels[i]
if r == g == b == 255:
pixels[i] = r, g, b, 0
for j in feather:
r, g, b, a = pixels[i+j]
pixels[i+j] = r, g, b, a/2
pixels.update()