On Fri, Jul 13, 2012 at 6:11 AM, Colin Holgate <co...@verizon.net> wrote:
> One exercise in that book I wrote is about using an image as a color > picker. It uses the same technique as Scott mentioned, only I then set the > color of another graphic to show that it has picked up the right color. > That's exactly what I'm doing. I'm using the color picker to set the color of text, modifying the text color in real time as the user moves around the color wheel by touch. Can you give more information about the book you wrote? It sounds interesting. One thing to double check, the x and y values you're using, are those from > the top left of the image? With mousecolor you use the card position, but > with this imagedata technique you would subtract the left and top of the > image in question, unless the image is the whole card. > I'm assuming Scott's technique does this. His description is: "This should retrieve the color of a pixel in a target image based on the X,Y offset of the touch from the topLeft." I've been busy with other things and haven't been able to check to make sure I haven't done something dumb with his code, but I've been assuming that is how this works. -- Regards, Howard Bornstein ----------------------- www.designeq.com _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
