package cg;
//-----------------------------------------------------------------------------
import java.awt.Font;
//import java.awt.geom.Rectangle2D;
//-----------------------------------------------------------------------------
import com.jogamp.opengl.util.awt.TextRenderer;
//-----------------------------------------------------------------------------
import javax.swing.JFrame;
import com.jogamp.opengl.GL2;
import com.jogamp.opengl.GLAutoDrawable;
import com.jogamp.opengl.GLCapabilities;
import com.jogamp.opengl.GLEventListener;
import com.jogamp.opengl.GLProfile;
import com.jogamp.opengl.awt.GLCanvas;
import com.jogamp.opengl.glu.GLU;
import com.jogamp.opengl.util.FPSAnimator;
//-----------------------------------------------------------------------------
public class Main implements GLEventListener {

	private GLU glu = new GLU();
	private float rtri = 0.0f;
	
	private TextRenderer renderer;

//-----------------------------------------------------------------------------	
	public static void main(String[] args) {
		 
	      final GLProfile profile = GLProfile.get(GLProfile.GL2);
	      GLCapabilities capabilities = new GLCapabilities(profile);
	      final GLCanvas glcanvas = new GLCanvas(capabilities);

	      final int width = 800;
	      final int height = 600;
	     
	      Main m = new Main();
	      glcanvas.addGLEventListener(m);
	  
	      final JFrame frame = new JFrame ("2D Texte auf Objektflächen - ergänzt den Code und beschriftet die Flächen");
	      frame.add(glcanvas);
	      frame.setSize(width, height);
	      frame.setVisible(true);
	      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	      
	      final FPSAnimator animator = new FPSAnimator( glcanvas, 60, true );
	      animator.start();
	}
	//-----------------------------------------------------------------------------
	@Override
	public void init(GLAutoDrawable drawable) {
		
		GL2 gl = drawable.getGL().getGL2();
		gl.glClearColor(0.000f, 0.749f, 1.000f, 1.0f);

	    gl.glEnable( GL2.GL_DEPTH_TEST );

	    renderer = new TextRenderer(new Font("SansSerif", Font.BOLD, 20));
	}
	//-----------------------------------------------------------------------------
	@Override
	public void display(GLAutoDrawable drawable) {
		
		  GL2 gl = drawable.getGL().getGL2();
		
	      gl.glClear( GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT );     
	      
	      gl.glMatrixMode(GL2.GL_MODELVIEW);
	      gl.glLoadIdentity();
	      glu.gluLookAt(0, 0, 5,
	                    0, 0, 0,
	                    0, 1, 0);

	      gl.glRotatef(rtri, 1, 1, 1);
	      gl.glScalef(2, 2, 2);

	      gl.glPushMatrix();
	      
	      gl.glRotatef(-90, 1, 0, 0);
	      // obere Fläche
	      drawFace(gl, 1.0f, "obere" /*, ...*/);
	      
	      gl.glPopMatrix();
	      
	      // vordere Fläche
	      drawFace(gl, 1.0f, "vordere" /*, ...*/);

	      gl.glPushMatrix();
	      
	      gl.glRotatef(90, 0, 1, 0);
	      // rechte Fläche
	      drawFace(gl, 1.0f, "rechte" /*, ...*/);
	      
	      gl.glRotatef(90, 0, 1, 0);
	      // hintere Fläche  
	      drawFace(gl, 1.0f, "hintere" /*, ...*/);
	      
	      gl.glRotatef(90, 0, 1, 0);
	      // linke Fläche
	      drawFace(gl, 1.0f, "linke" /*, ...*/);
	      
	      gl.glPopMatrix();
	      gl.glPushMatrix();
	      
	      gl.glRotatef(90, 1, 0, 0);
	      // untere Fläche
	      drawFace(gl, 1.0f, "untere" /*, ...*/);
	      
	      gl.glPopMatrix();

	      rtri += 0.4f;
	}
	//-----------------------------------------------------------------------------
	@Override
	public void dispose(GLAutoDrawable drawable) {}
	//-----------------------------------------------------------------------------
	@Override
	public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
		
		  final GL2 gl = drawable.getGL().getGL2();
		
	      final float h = ( float ) width / ( float ) height;
	      
	      gl.glViewport( 0, 0, width, height );
	      gl.glMatrixMode( GL2.GL_PROJECTION );
	      gl.glLoadIdentity();
	      glu.gluPerspective( 45.0f, h, 1.0, 20.0 ); 
	      gl.glMatrixMode( GL2.GL_MODELVIEW );
	      gl.glLoadIdentity();
	}
	//-----------------------------------------------------------------------------
	  private void drawFace(GL2 gl, float faceSize, String text /*,...*/) {

		  float halfFaceSize = faceSize / 2;

		  gl.glBegin(GL2.GL_QUADS);
		  gl.glVertex3f(-halfFaceSize, -halfFaceSize, halfFaceSize);
		  gl.glVertex3f( halfFaceSize, -halfFaceSize, halfFaceSize);
		  gl.glVertex3f( halfFaceSize,  halfFaceSize, halfFaceSize);
		  gl.glVertex3f(-halfFaceSize,  halfFaceSize, halfFaceSize);
		  gl.glEnd();

		  renderer.begin3DRendering();
		  //renderer.draw3D(...);
		  //..
		  renderer.end3DRendering();
}
}