Nicolas BOUTET schrieb: > Hi, > > does someone know if it's possible (and how), using ECMAScript, to get the > RGB value (or LookUpTable index) of a pixel (using X,Y coordinates) of an > image item. > > Thanks > > Nicolas
Hi Nicolas im sorry to say, but , no, this is currently not really possible. at least not that easy. there is only one way i can think of how to do it, you could 1) embed your images in your SVG via the data:image/png;base64 syntax 2)implement a base64 decoder in js 3)implement a png decoder in js 4) use 2 and 3 to turn the embedded image into an array of color values for each point (bitmap) 5) map the coordinates of your image to the array index 6) get the right color value on mouseover/ click ... steps 1-4 can be precomputed. so you can use existing implementations of the decoders, and send the right data structure to the client. so you only need to implement 5 and 6 in js. cheers Holger ----- To unsubscribe send a message to: [EMAIL PROTECTED] -or- visit http://groups.yahoo.com/group/svg-developers and click "edit my membership" ---- Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/svg-developers/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
