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| import javax.media.opengl.*;
import javax.media.opengl.glu.*;
import com.sun.opengl.util.*;
import com.sun.opengl.util.j2d.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.net.*;
import java.nio.*;
import javax.imageio.*;
import javax.swing.*;
public class chartest extends JFrame implements GLEventListener, KeyListener
{
private int texture;
public void display(GLAutoDrawable gLDrawable)
{
final GL gl = gLDrawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
gl.glColor3f(1.0f, 1.0f, 1.0f);
gl.glBindTexture(GL.GL_TEXTURE_2D, texture);
gl.glBegin(GL.GL_QUADS); gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-12.0f, -19.0f, -15.0f);
gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 12.0f, -19.0f, -15.0f);
gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 12.0f, 19.0f, -15.0f);
gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-12.0f, 19.0f, -15.0f);
gl.glEnd(); gl.glFlush();
}
public void displayChanged(GLAutoDrawable g, boolean b, boolean b2){}
public void init(GLAutoDrawable gLDrawable)
{
final GL gl = gLDrawable.getGL();
gl.glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
gl.glShadeModel(GL.GL_FLAT);
gl.glEnable(GL.GL_TEXTURE_2D);
texture = genTexture(gl);
gl.glBindTexture(GL.GL_TEXTURE_2D, texture);
URL url = this.getClass().getResource("test.png");
try
{
BufferedImage img = ImageIO.read(url);
makeRGBTexture(gl, new GLU(), img, GL.GL_TEXTURE_2D, false);
}
catch(Exception e)
{
e.printStackTrace();
}
gl.glTexParameteri(GL.GL_TEXTURE_2D,GL.GL_TEXTURE_MIN_FILTER,GL.GL_LINEAR);
gl.glTexParameteri(GL.GL_TEXTURE_2D,GL.GL_TEXTURE_MAG_FILTER,GL.GL_LINEAR);
}
public void reshape(GLAutoDrawable gLDrawable, int x, int y, int width, int height)
{
final GL gl = gLDrawable.getGL();
final GLU glu = new GLU();
if (height <= 0) height = 1;
final float h = (float)width / (float)height;
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, h, 1.0, 20.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
public void keyPressed(KeyEvent e)
{
if (e.getKeyCode() == KeyEvent.VK_ESCAPE)
System.exit(0);
}
public void keyReleased(KeyEvent e) {}
public void keyTyped(KeyEvent e) {}
public static void main(String[] args) {
chartest c = new chartest();
GLCanvas canvas = new GLCanvas(new GLCapabilities());
canvas.addGLEventListener(c);
c.add(canvas);
c.setSize(640, 480);
canvas.addKeyListener(c);
c.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});
c.setVisible(true);
canvas.requestFocus();
}
private void makeRGBTexture(GL gl, GLU glu, BufferedImage img, int target, boolean mipmapped)
{
ByteBuffer dest = null;
switch (img.getType())
{
case BufferedImage.TYPE_3BYTE_BGR:
case BufferedImage.TYPE_CUSTOM:
{
System.out.println("Custom");
byte[] data = ((DataBufferByte) img.getRaster().getDataBuffer()).getData();
dest = ByteBuffer.allocateDirect(99999);
dest.order(ByteOrder.nativeOrder());
dest.put(data, 0, data.length);
break;
}
case BufferedImage.TYPE_INT_RGB:
{
int[] data = ((DataBufferInt) img.getRaster().getDataBuffer()).getData();
dest = ByteBuffer.allocateDirect(data.length * BufferUtil.SIZEOF_INT);
dest.order(ByteOrder.nativeOrder());
dest.asIntBuffer().put(data, 0, data.length);
break;
}
default:
throw new RuntimeException("Unsupported image type " + img.getType());
}
if (mipmapped)
{
glu.gluBuild2DMipmaps(target, GL.GL_RGB8, img.getWidth(), img.getHeight(), GL.GL_RGB, GL.GL_UNSIGNED_BYTE, dest);
}
else
{
gl.glTexImage2D(target, 0, GL.GL_RGB, img.getWidth(), img.getHeight(), 0, GL.GL_RGB, GL.GL_UNSIGNED_BYTE, dest);
}
}
private int genTexture(GL gl)
{
final int[] tmp = new int[1];
gl.glGenTextures(1, tmp, 0);
return tmp[0];
}
} |
