blending 2 images

[JavaJug]

Hello there !
I've never done complex image manipulation in Java and would need to create a
new image that is a mix between 2 other images, in which the value of each pixel
would be for instance 0.3 times the value of the same pixel in the 1st image and
0.7 times the value of the pixel in the 2nd one.
Should I use an alpha channel to do it ?
Is there a quick way to do it ? it's to add an effect in an applet (
http://www.chez.com/fuzzyghost/java/roserain/Rose.html I'd like to add a trail
on the falling flowers)

THX !

 

[Boudewijn Dijkstra]

Hello there !
I've never done complex image manipulation in Java and would need to create a
new image that is a mix between 2 other images, in which the value of each
pixel would be for instance 0.3 times the value of the same pixel in the 1st
image and 0.7 times the value of the pixel in the 2nd one.
Should I use an alpha channel to do it ?
Is there a quick way to do it ? it's to add an effect in an applet (
http://www.chez.com/fuzzyghost/java/roserain/Rose.html I'd like to add a
trail on the falling flowers)

implement java.awt.image.RGBImageFilter

 

[Thomas Weidenfeller]

Hello there !
I've never done complex image manipulation in Java and would need to
create a new image that is a mix between 2 other images, in which the
value of each pixel would be for instance 0.3 times the value of the
same pixel in the 1st image and 0.7 times the value of the pixel in the
2nd one.

Check out AlphaComposite.

/Thomas

BTW: There is a separate newsgroup for GUI questions.