package org.osm2world.core.target.jogl;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.imageio.ImageIO;
import javax.media.opengl.GL2;
import com.jogamp.opengl.util.awt.ImageUtil;
import com.jogamp.opengl.util.texture.Texture;
import com.jogamp.opengl.util.texture.TextureIO;
import com.jogamp.opengl.util.texture.awt.AWTTextureIO;
/**
* loads textures from files to JOGL and keeps them available for future use
*/
public class JOGLTextureManager {
private final GL2 gl;
private final Map<File, Texture> availableTextures = new HashMap<File, Texture>();
public JOGLTextureManager(GL2 gl) {
this.gl = gl;
}
public Texture getTextureForFile(File file) {
Texture result = availableTextures.get(file);
if (result == null) {
synchronized (this) {
//try again
if (availableTextures.containsKey(file)) {
return availableTextures.get(file);
}
try {
if (!file.getName().toLowerCase().endsWith("png")) {
//flip to ensure consistent tex coords with png images
BufferedImage bufferedImage = ImageIO.read(file);
ImageUtil.flipImageVertically(bufferedImage);
result = AWTTextureIO.newTexture(
gl.getGLProfile(), bufferedImage, true);
} else {
result = TextureIO.newTexture(file, true);
}
availableTextures.put(file, result);
} catch (IOException exc) {
exc.printStackTrace();
System.exit(2);
//TODO error handling
}
}
}
return result;
}
public void releaseAll() {
for (Texture texture : availableTextures.values()) {
texture.destroy(gl);
}
availableTextures.clear();
}
}