import java.io.File;
import java.io.IOException;
import java.nio.ByteBuffer;

import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLProfile;

import com.jogamp.newt.event.WindowAdapter;
import com.jogamp.newt.event.WindowEvent;
import com.jogamp.newt.opengl.GLWindow;
import com.jogamp.opengl.util.awt.Screenshot;
import com.jogamp.opengl.util.gl2.GLUT;
import com.jogamp.opengl.util.texture.Texture;
import com.jogamp.opengl.util.texture.TextureIO;

/**
 * Adapted from
 * http://www.java-tips.org/other-api-tips/jogl/how-to-draw-a-texture
 * -mapped-teapot-with-automatically-generated-texture-coordi.html
 */
public class JoglNewtTeapot implements GLEventListener {

	private GLUT glut;

	private static final int stripeImageWidth = 32;
	private ByteBuffer stripeImageBuf = ByteBuffer
			.allocate(3 * stripeImageWidth);
	/* glTexGen stuff: */
	private float sgenparams[] = { 1.0f, 1.0f, 1.0f, 0.0f };

	@Override
	public void display(GLAutoDrawable gLDrawable) {
		final GL2 gl = gLDrawable.getGL().getGL2();

		gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
		gl.glPushMatrix();
		gl.glRotatef(45.0f, 0.0f, 0.0f, 1.0f);
		glut.glutSolidTeapot(2.0f);
		gl.glPopMatrix();
		gl.glFlush();

		try {
			Screenshot.writeToFile(
					new File("testjo" + System.currentTimeMillis() + ".png"),
					640, 480, true);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Override
	public void init(GLAutoDrawable drawable) {
		GL2 gl = drawable.getGL().getGL2();
		glut = new GLUT();

		gl.glClearColor(0.0f, 0.0f, 0.0f, 0.0f);

		Texture tex = null;
		try {
			tex = TextureIO
					.newTexture(getClass().getClassLoader()
							.getResourceAsStream("ardor3d_white_256.jpg"),
							false, "jpg");
		} catch (Exception e) {
			e.printStackTrace();
		}
		tex.bind(gl);

		// uncomment this and comment the above to see a working texture
		// makeStripeImage();
		// gl.glPixelStorei(GL.GL_UNPACK_ALIGNMENT, 1);
		// gl.glTexEnvf(GL2.GL_TEXTURE_ENV, GL2.GL_TEXTURE_ENV_MODE,
		// GL2.GL_MODULATE);
		// gl.glTexParameterf(GL2.GL_TEXTURE_1D, GL.GL_TEXTURE_WRAP_S,
		// GL.GL_REPEAT);
		// gl.glTexParameterf(GL2.GL_TEXTURE_1D, GL.GL_TEXTURE_MAG_FILTER,
		// GL.GL_LINEAR);
		// gl.glTexParameterf(GL2.GL_TEXTURE_1D, GL.GL_TEXTURE_MIN_FILTER,
		// GL.GL_LINEAR);
		// gl.glTexImage1D(GL2.GL_TEXTURE_1D, 0, 3, stripeImageWidth, 0,
		// GL.GL_RGB, GL.GL_UNSIGNED_BYTE, stripeImageBuf);

		gl.glTexGeni(GL2.GL_S, GL2.GL_TEXTURE_GEN_MODE, GL2.GL_OBJECT_LINEAR);
		gl.glTexGenfv(GL2.GL_S, GL2.GL_OBJECT_PLANE, sgenparams, 0);

		gl.glEnable(GL.GL_DEPTH_TEST);
		gl.glDepthFunc(GL.GL_LESS);
		gl.glEnable(GL2.GL_TEXTURE_GEN_S);
		// gl.glEnable(GL2.GL_TEXTURE_1D);
		gl.glEnable(GL2.GL_TEXTURE_2D);
		gl.glEnable(GL2.GL_CULL_FACE);
		gl.glEnable(GL2.GL_LIGHTING);
		gl.glEnable(GL2.GL_LIGHT0);
		gl.glEnable(GL2.GL_AUTO_NORMAL);
		gl.glEnable(GL2.GL_NORMALIZE);
		gl.glFrontFace(GL.GL_CW);
		gl.glCullFace(GL.GL_BACK);
		gl.glMaterialf(GL.GL_FRONT, GL2.GL_SHININESS, 64.0f);
	}

	private void makeStripeImage() {
		for (int j = 0; j < stripeImageWidth; j++) {
			stripeImageBuf.put(((j <= 4) ? (byte) 255 : (byte) 0));
			stripeImageBuf.put(((j > 4) ? (byte) 255 : (byte) 0));
			stripeImageBuf.put((byte) 0);
		}
		stripeImageBuf.rewind();
	}

	@Override
	public void reshape(GLAutoDrawable gLDrawable, int x, int y, int w, int h) {
		GL2 gl = gLDrawable.getGL().getGL2();

		gl.glViewport(0, 0, w, h);
		gl.glMatrixMode(GL2.GL_PROJECTION);
		gl.glLoadIdentity();
		if (w <= h)
			gl.glOrtho(-3.5, 3.5, -3.5 * (float) h / (float) w, 3.5 * (float) h
					/ (float) w, -3.5, 3.5);
		else
			gl.glOrtho(-3.5 * (float) w / (float) h, //
					3.5 * (float) w / (float) h, -3.5, 3.5, -3.5, 3.5);
		gl.glMatrixMode(GL2.GL_MODELVIEW);
		gl.glLoadIdentity();
	}

	@Override
	public void dispose(GLAutoDrawable gLDrawable) {
	}

	public static void main(String[] args) throws InterruptedException,
			IOException {

		final GLCapabilities caps = new GLCapabilities(
				GLProfile.getMaxFixedFunc(true));
		caps.setHardwareAccelerated(true);
		caps.setDoubleBuffered(true);
		caps.setAlphaBits(8);
		caps.setDepthBits(8);
		caps.setNumSamples(0);
		caps.setSampleBuffers(false);
		caps.setStencilBits(0);
		caps.setRedBits(8);
		caps.setBlueBits(8);
		caps.setGreenBits(8);

		// caps.setPBuffer(true);
		caps.setFBO(true);

		final GLWindow glWindow = GLWindow.create(caps);
		glWindow.setSize(640, 480);
		glWindow.addGLEventListener(new JoglNewtTeapot());

		glWindow.addWindowListener(new WindowAdapter() {
			@Override
			public void windowDestroyed(WindowEvent arg0) {
				System.exit(0);
			}
		});

		glWindow.setVisible(true);

		for (int x = 0; x < 5; x++) {
			glWindow.display();
		}
	}
}