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Java Game APIs & Engines / JOGL Development / Re: Need help splitting PNG images
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on: 2004-10-05 03:30:04
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I found the reason!!! I didn't create raster for each frame, but use one raster object for all frames. now it works, the right code is pasted below. 1
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| if (bufferedImage.getColorModel().hasAlpha()) {
for(int i= 0; i < totalFrame; i ++){
raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,width, height,4,null);
frames[i] = new BufferedImage(glAlphaColorModel,raster,false,new Hashtable());
}
} else {
for(int i= 0; i < totalFrame; i ++){
raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,width, height,3,null);
frames[i] = new BufferedImage(glColorModel,raster,false,new Hashtable());
}
} |
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Java Game APIs & Engines / JOGL Development / Re: Need help splitting PNG images
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on: 2004-10-03 16:05:37
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I am learning the example of lwjgl 0.92, the spaceinvaders.I try to combine 3 alien sprite images into one png file.It's very useful, isn't it? the code is listed below. my problem is:the first frame is correct, and the second is wrong, it's actually a mixture of the first and the second sprite. the third is wrong either. it's a mixture of all sprite. if I add a statement like g.clearRect(...)(see the code below), it works, the animate can play correctly, but transparent lost. does anybody can tell me why, and how to solve this problem. thanks. 1
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| public Texture getFrameTexture(String resourceName, int width, int height,
int frame) throws IOException {
Texture tex = (Texture) table.get(resourceName+frame);
if (tex != null) {
return tex;
}
BufferedImage bufferedImage = loadImage(resourceName);
int totalFrame = bufferedImage.getWidth()/width;
if(frame >= totalFrame){
frame = 0;
tex = (Texture) table.get(resourceName+frame);
if (tex != null) {
return tex;
}
}
WritableRaster raster;
BufferedImage[] frames = new BufferedImage[totalFrame];
if (bufferedImage.getColorModel().hasAlpha()) {
raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,width, height,4,null);
for(int i= 0; i < totalFrame; i ++){
frames[i] = new BufferedImage(glAlphaColorModel,raster,false,new Hashtable());
}
} else {
raster = Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE,width, height,3,null);
for(int i= 0; i < totalFrame; i ++){
frames[i] = new BufferedImage(glColorModel,raster,false,new Hashtable());
}
}
Graphics g=null;
for(int i = 0; i < totalFrame; i ++){
g = frames[i].getGraphics();
g.drawImage(bufferedImage, -i*width, 0, null);
tex = getTexture(frames[i],
GL11.GL_TEXTURE_2D, GL11.GL_RGBA, GL11.GL_LINEAR, GL11.GL_LINEAR);
table.put(resourceName+i,tex);
}
return (Texture) table.get(resourceName+frame);
} |
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Java Game APIs & Engines / J2ME / Re: Transparent PNGs in MIDP1.0
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on: 2003-06-04 06:13:12
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in midp1.0, png32 or png24 transparent is supported. In photoshop ImageReady7.0, create a transparent image, and save the image as png24 or png32 format, and transparent is supported. I have finish a game like this.
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