package fancy.jf.horschie;
import java.awt.Frame;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCanvas;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.glu.GLU;
import com.sun.opengl.util.Animator;
import com.sun.opengl.util.BufferUtil;
public class Sample implements GLEventListener, MouseListener {
private static final float[] staticVertices = new float[] {
0.0f, 0.0f, 0.0f,
0.0f, 50.0f, 0.0f,
25.0f, 50.0f, 0.0f,
25.0f, 25.0f, 0.0f,
50.0f, 25.0f, 0.0f,
50.0f, 0.0f, 0.0f,
0.0f, 0.0f, 50.0f,
0.0f, 50.0f, 50.0f,
25.0f, 50.0f, 50.0f,
25.0f, 25.0f, 50.0f,
50.0f, 25.0f, 50.0f,
50.0f, 0.0f, 50.0f
};
private static final int[] staticIndicesFaces = new int[] {
0, 1, 2, 3
};
private static final int[] staticIndicesLines = new int[] {
0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 0,
6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 6,
0, 6, 1, 7, 2, 8, 3, 9, 4, 10, 5, 11
};
private GL gl = null;
private GLU glu = null;
private FloatBuffer vaVertices = null;
private IntBuffer vaIndicesFaces = null;
private IntBuffer vaIndicesLines = null;
private float rotY = 0;
private boolean drawKoordSys = false;
@Override
public void init(final GLAutoDrawable drawable) {
gl = drawable.getGL();
glu = new GLU();
vaVertices = BufferUtil.newFloatBuffer(staticVertices.length);
vaVertices.put(staticVertices, 0, staticVertices.length);
vaVertices.rewind();
vaIndicesFaces = BufferUtil.newIntBuffer(staticIndicesFaces.length);
vaIndicesFaces.put(staticIndicesFaces, 0, staticIndicesFaces.length);
vaIndicesFaces.rewind();
vaIndicesLines = BufferUtil.newIntBuffer(staticIndicesLines.length);
vaIndicesLines.put(staticIndicesLines, 0, staticIndicesLines.length);
vaIndicesLines.rewind();
gl.glEnableClientState(GL.GL_VERTEX_ARRAY);
}
@Override
public void display(final GLAutoDrawable drawable) {
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
glu.gluLookAt(0, 50, 200, 0, 25, 0, 0, 1, 0);
gl.glRotatef(rotY, 0.0f, 1.0f, 0.0f);
rotY += 1.1f;
if(drawKoordSys) drawCoordSys();
gl.glVertexPointer(3, GL.GL_FLOAT, 0, vaVertices);
gl.glColor3f(0.8f,0.5f,0.5f);
gl.glDrawElements(GL.GL_QUADS, staticIndicesFaces.length, GL.GL_UNSIGNED_INT, vaIndicesFaces);
gl.glColor3f(0.8f, 0.5f, 0.2f);
gl.glDrawElements(GL.GL_LINES, staticIndicesLines.length, GL.GL_UNSIGNED_INT, vaIndicesLines);
}
private void drawCoordSys() {
gl.glBegin(GL.GL_LINES);
gl.glColor3f(0.5f, 0.5f, 0.5f);
// X-Achse, rot
gl.glColor3f(1.0f, 0.0f, 0.0f);
gl.glVertex3f(0, 0, 0);
gl.glVertex3f(100, 0, 0);
// Y-Achse, grün
gl.glColor3f(0.0f, 1.0f, 0.0f);
gl.glVertex3f(0, 0, 0);
gl.glVertex3f(0, 100, 0);
// Z-Achse, blau
gl.glColor3f(0.0f, 0.0f, 1.0f);
gl.glVertex3f(0, 0, 0);
gl.glVertex3f(0, 0, 100);
gl.glEnd();
}
@Override
public void reshape(final GLAutoDrawable drawable, final int x, final int y, final int width, int height) {
if (height <= 0) height = 1;
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, (float) width / (float) height, 1.0, 500.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
@Override
public void mouseClicked(final MouseEvent e) {
drawKoordSys = !drawKoordSys;
}
public static void main(final String[] args) {
final Sample main = new Sample();
final Frame frame = new Frame();
final GLCanvas canvas = new GLCanvas();
final Animator animator = new Animator(canvas);
canvas.addGLEventListener(main);
canvas.addMouseListener(main);
frame.add(canvas);
frame.setSize(500, 500);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(final WindowEvent e) {
new Thread(new Runnable() {
public void run() {
animator.stop();
System.exit(0);
}
}).start();
}
});
frame.setLocationRelativeTo(null);
frame.setVisible(true);
animator.start();
}
@Override
public void displayChanged(final GLAutoDrawable drawable, final boolean modeChanged, final boolean deviceChanged) {}
@Override
public void mouseEntered(final MouseEvent e) {}
@Override
public void mouseExited(final MouseEvent e) {}
@Override
public void mousePressed(final MouseEvent e) {}
@Override
public void mouseReleased(final MouseEvent e) {}
}
