JOGLQuad.java

JOGLQuad.java

import com.jogamp.opengl.*;
import com.jogamp.opengl.fixedfunc.*;
import com.jogamp.opengl.util.Animator;
import com.jogamp.newt.opengl.GLWindow;
 
/**
 * Self-contained example (within a single class only to keep it simple) 
 * displaying a rotating quad
 */
public class JOGLQuad implements GLEventListener {
 
	private float rotateT = 0.0f;
	private static Animator animator;
 
	@Override
	public void display(GLAutoDrawable gLDrawable) {
		final GL2 gl = gLDrawable.getGL().getGL2();
		gl.glClear(GL.GL_COLOR_BUFFER_BIT);
		gl.glClear(GL.GL_DEPTH_BUFFER_BIT);
		gl.glLoadIdentity();
		gl.glTranslatef(0.0f, 0.0f, -5.0f);
 
		// rotate about the three axes
		gl.glRotatef(rotateT, 1.0f, 0.0f, 0.0f);
		gl.glRotatef(rotateT, 0.0f, 1.0f, 0.0f);
		gl.glRotatef(rotateT, 0.0f, 0.0f, 1.0f);
 
		// Draw A Quad
		gl.glBegin(GL2.GL_QUADS);       
        gl.glColor3f(0.0f, 1.0f, 0.5f);   // set the color of the quad
        gl.glVertex3f(-1.0f, 1.0f, 0.0f);   // Top Left
        gl.glColor3f(1.0f, 0.0f, 0.5f);
        gl.glVertex3f( 1.0f, 1.0f, 0.0f);   // Top Right
        gl.glColor3f(1.0f, 0.5f, 0.0f); 
        gl.glVertex3f( 1.0f,-1.0f, 0.0f);   // Bottom Right
        gl.glColor3f(0.0f, 0.5f, 1.0f);
        gl.glVertex3f(-1.0f,-1.0f, 0.0f);   // Bottom Left
		// Done Drawing The Quad
		gl.glEnd();                                                     
 
		// increasing rotation for the next iteration                   
		rotateT += 0.2f; 
	}
 
	@Override
	public void init(GLAutoDrawable glDrawable) {
		GL2 gl = glDrawable.getGL().getGL2();
		gl.glShadeModel(GLLightingFunc.GL_SMOOTH);
		gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
		gl.glClearDepth(1.0f);
		gl.glEnable(GL.GL_DEPTH_TEST);
		gl.glDepthFunc(GL.GL_LEQUAL);
		gl.glHint(GL2ES1.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
	}
 
	@Override
	public void reshape(GLAutoDrawable gLDrawable, int x, int y, int width, int height) {
		GL2 gl = gLDrawable.getGL().getGL2();
		final float aspect = (float) width / (float) height;
		gl.glMatrixMode(GLMatrixFunc.GL_PROJECTION);
		gl.glLoadIdentity();
		final float fh = 0.5f;
		final float fw = fh * aspect;
		gl.glFrustumf(-fw, fw, -fh, fh, 1.0f, 1000.0f);
		gl.glMatrixMode(GLMatrixFunc.GL_MODELVIEW);
		gl.glLoadIdentity();
	}
 
	@Override
	public void dispose(GLAutoDrawable gLDrawable) {
	}
 
	public static void main(String[] args) {
        GLCapabilities caps = new GLCapabilities(GLProfile.get(GLProfile.GL2));
        // We may at this point tweak the caps and request a translucent drawable
        caps.setBackgroundOpaque(false);
        GLWindow glWindow = GLWindow.create(caps);
        
        animator = new Animator(glWindow);
        glWindow.addGLEventListener(new JOGLQuad());
        
        glWindow.setTitle("Jogl GL2 Quad drawing");
        glWindow.setSize(600, 400);
        glWindow.setVisible(true);
        animator.start();
	}
}