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  Changing "Image Mode" ? (Composite)  (Read 1845 times)
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Offline appel

JGO Wizard


Medals: 80
Projects: 4


I always win!


« Posted 2005-10-24 19:42:56 »

For those who know Photoshop, you can change the mode of the image; Normal, Dissolve, Darken, Multiply, Screen etc.

Is there a way to do this with in Java?

Offline Anon666

Junior Devvie




aka Abuse/AbU5e/TehJumpingJawa


« Reply #1 - Posted 2005-10-24 19:46:09 »

That looks like modulate to me.

dstColor*=srcColor;


Ofcourse I'm wrong - that is nothing like a modulate =)
Offline appel

JGO Wizard


Medals: 80
Projects: 4


I always win!


« Reply #2 - Posted 2005-10-24 20:22:54 »

That looks like modulate to me.

dstColor*=srcColor;

Could you summarize that any further?  Roll Eyes  ( Huh)
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Offline oNyx

JGO Coder


Medals: 2


pixels! :x


« Reply #3 - Posted 2005-10-24 20:54:23 »

In java2d there are those composite modes and over in opengl you have blend funcs (in this case it would be GL_ONE, GL_ONE).

弾幕 ☆ @mahonnaiseblog
Offline appel

JGO Wizard


Medals: 80
Projects: 4


I always win!


« Reply #4 - Posted 2005-10-24 21:27:44 »

I'm doing something like this, and doesnt work:

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...
AlphaComposite originalComposite = (AlphaComposite)g.getComposite();
g.setComposite(makeComposite(0.5F)); // 50% transparent
g.drawImage(...);
g.setComposite(originalComposite);
..

private AlphaComposite makeComposite(float alpha) {
   int type = AlphaComposite.SRC;
   return(AlphaComposite.getInstance(type, alpha));
}


This is all very new to me...any help appreciated. What do I change to make it work as intended?
Offline Anon666

Junior Devvie




aka Abuse/AbU5e/TehJumpingJawa


« Reply #5 - Posted 2005-10-24 22:07:56 »

Amazing what a quick google can find.

http://www.pegtop.net/delphi/blendmodes/

As to how to implement that in Java - implement the Composite interface, and define your own compositing rule. (you will in turn have to define a CompositeContext - with the necessary magic in the compose(Raster src, Raster dst, WritableRaster dstOut) method.

It won't be quick though (so don't use it in a real-time animation).
Offline appel

JGO Wizard


Medals: 80
Projects: 4


I always win!


« Reply #6 - Posted 2005-10-24 22:37:48 »

Thank you Smiley
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