SynthMakerrl ·
sounds interesting, but what's the syntax? Can I pls. have a usage example?
colour matrix?
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jorge ·
The ColourMatrix type was introduced to handle transparency when creating animated knobs.
The simplest example of usage is colour translation:
[old link]
The top matrix is the identity colour matrix and it doesnt affect the original image.
The second matrix has matrix[4][0]=1 translating the red component of the image by 1 for every pixel.
jorge ·
When applied to converting a shadow with white background to a shadow with transparent background, the following can be used:
[old link] What the second matrix does is scale R G and B by 20, translate R G and B by -19 and shear the alpha channel by -0.9*R. So the Red channel is defining how much to subtract from the alpha channel. The white part of the original image has very high Red component which makes it very transparent while the dark parts have very low red and dont affect the alpha channel much.
The end result is a shadow with a transparent background.
skOre ·
Give me a couple of minutes to get my jaw fixed.
Could you elaborate on the technics behind it?
Tom7777 ·
Wow this colour matrix module looks great, thanks for the examples Jorge 🙂
rl ·
ok, there are r, g, b and alpha, but what's the 5 th row/column?
(edit: this page gives an explanation: http://msdn.microsoft.com/library/defau ... ecolor.asp )
exciting stuff nevertheless....
Shifrin ·
I can think of a fair few uses for this 🙂
Very cool indeed!
Shif.
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