Daniel Selman wrote: > Vidya, > > I just use something like: > > BufferedImage perlinTextureImage = new BufferedImage( MAX_TEXTURE_SIZE, > MAX_TEXTURE_SIZE, BufferedImage.TYPE_3BYTE_BGR ); > > I can then use getRGB(), setRGB() to read/write the color data. What are the > advantages of setting up the ColorModel explicitly?
Control over how big the image is in memory. For example, most sky/cloud textures are really only for alpha blending. At most, you only want a 256 color greyscale image - so you set the colour model to be that. This way you only use 1 byte per pixel rather than 4, which is really important if you are doing a lot of texture manipulation. *HOWEVER* Note that there is a serious bug in java3D that AFAIK has always existed (at least all the 1.2.x and 1.3b1). You cannot use any other colour model other than 4 bytes per pixel for java3d textures. ImageComponent2D has a bug that crashes the constructor because of some wrong assumptions it makes. I have a bug report in for that and a promise of a fix for 1.3beta2. Unfortunately there doesn't seem to be a plan for fixing this for the 1.2 series, so if you do this, you will be writing J3D1.3-specific code, even if you don't use the new APIs. -- Justin Couch http://www.vlc.com.au/~justin/ Java Architect & Bit Twiddler http://www.yumetech.com/ Author, Java 3D FAQ Maintainer http://www.j3d.org/ ------------------------------------------------------------------- "Humanism is dead. Animals think, feel; so do machines now. Neither man nor woman is the measure of all things. Every organism processes data according to its domain, its environment; you, with all your brains, would be useless in a mouse's universe..." - Greg Bear, Slant ------------------------------------------------------------------- =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
