reading RGB value from pixel in SVG
- Okay, this list has helped me learn three things in four days so I am
hoping it survives the NS turmoil long enough to answer a couple of
1. I know SVG is not meant for manipulating bitmaps, but the filters
it has do some pretty nifty bitmap-ish things on the fly. Can I
determine the RGB value of a pixel on the SVG screen? The reason I
think it might be possible is that you can distort an image according
to color channel values using something like
<feDisplacementMap scale="20" id="feDM"
See for example http://marble.sru.edu/~ddailey/svg/embedmask4.html
for a dynamic use of gradients to make a bitmap have pond-ripples (it
doesn't work in anything but IE/ASV at the moment). So somewhere in
the engine that is doing this work it knows what the red channel
value is at point (x,y).
questions 2 and 3 to follow.
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