Looking through the View guide, I don't see how to clear an area. I want to cut a rectangle out of a Rebol created gradient, not fill it with anything, so that it doesn't affect neighbouring pixels. In other words, I want to create a rectangular doughnut. When I filled with white (snow), it changed the row of pixels at the bottom edge.
Yes, clearing an area in an image. I'm sure the same procedure could be used to chop up an image and save all of the parts, which could also be useful.
Code: view layout [ image logo.gif ] change/dup skip logo.gif 5x5 white 100x10 view layout [ image logo.gif ] See http://www.rebol.com/docs/image.html#section-16
Look at these examples: Code: view layout [ box 250x250 effect [ draw [ image logo.gif 120x1 254.254.254 border ]]] Code: view layout [ box 250x250 effect [ draw [ pen yellow red line-width 5 line-pattern 5 5 image logo.gif 1x100 border ]]] Code: view layout [ box 300x300 effect [ draw [ pen yellow red line-width 20 box 50x50 250x250 pen logo.gif line-width 10 box 20x20 80x80 ]]] The last one is what you want, I suppose...
