Java-Gaming.org
Play Revenge of the Titans! The situation is critical. We need fancy commanders to defend Earth, the moon, Mars!
Featured games (78)
games approved by the League of Dukes
Games in Showcase (407)
games submitted by our members
Games in WIP (293)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
 
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Changing a color on a bitmap with Color matrix  (Read 1084 times)
0 Members and 1 Guest are viewing this topic.
Offline darrinps

Senior Newbie




Java games rock!


« Posted 2012-03-03 06:28:31 »

OK, I know how to change red, blue, and green to other colors using a ColorMatrix, but how do go about using it to change black to white for example?

Let's say I have a bitmap with a bunch of black dots on a mostly white background that also has some other colors on it. I do not want to touch the other colors, but I need to convert the black pixels to white but I cannot see how that can be done with the ColorMatrix.

Can it, and if so how?  If not, how can you do this efficiently? I know that you can do a setPixel on a Bitmap, but it is horribly slow.

Thanks!
Offline ra4king

JGO Kernel


Medals: 264
Projects: 2


I'm the King!


« Reply #1 - Posted 2012-03-03 08:18:02 »

I've never heard of a ColorMatrix or Bitmap class in Java2D......

Offline Roquen

JGO Ninja


Medals: 66



« Reply #2 - Posted 2012-03-03 08:26:25 »

Black will always rotate to black.
Pages: [1]
  ignore  |  Print  
 
 
You cannot reply to this message, because it is very, very old.

Play Revenge of the Titans! The situation is critical. We need fancy commanders to defend Earth, the moon, Mars!
 
Browse for soundtracks for your game!

Add your game by posting it in the WIP section,
or publish it in Showcase.

The first screenshot will be displayed as a thumbnail.

The invasion has landed! On Mars! And you're there to beat 'em!
cubemaster21 (100 views)
2013-05-17 21:29:12

alaslipknot (108 views)
2013-05-16 21:24:48

gouessej (138 views)
2013-05-16 00:53:38

gouessej (133 views)
2013-05-16 00:17:58

theagentd (145 views)
2013-05-15 15:01:13

theagentd (131 views)
2013-05-15 15:00:54

StreetDoggy (174 views)
2013-05-14 15:56:26

kutucuk (196 views)
2013-05-12 17:10:36

kutucuk (198 views)
2013-05-12 15:36:09

UnluckyDevil (204 views)
2013-05-12 05:09:57
Complex number cookbook
by Roquen
2013-04-24 12:47:31

2D Dynamic Lighting
by Oskuro
2013-04-17 16:46:12

2D Dynamic Lighting
by Oskuro
2013-04-17 16:45:57

2D Dynamic Lighting
by Oskuro
2013-04-17 16:23:20

Noise (bandpassed white)
by Roquen
2013-04-05 17:36:01

Noise (bandpassed white)
by Roquen
2013-04-03 16:17:38

Java Data structures
by Roquen
2013-03-29 13:21:12

Topic Request
by kutucuk
2013-03-22 21:42:01
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!
Page created in 0.067 seconds with 20 queries.