import java.awt.event.*;
import javax.swing.*;
import com.sun.opengl.util.*;
import javax.media.opengl.*;

/**
 * This program demonstrates the use of the GL lighting model. Several objects
 * are drawn using different material characteristics. A single light source
 * illuminates the objects.
 * 
 * @author Kiet Le
 */
public class Material//
        extends JFrame//
        implements GLEventListener//
        , KeyListener//
{ 

    public Material() {
    }

    public static void main(String[] args) {
        GLCapabilities caps = new GLCapabilities();
        GLJPanel canvas = new GLJPanel(caps);
        Material demo = new Material();
        canvas.addGLEventListener(demo);
        canvas.addKeyListener(demo);
        //
        JFrame.setDefaultLookAndFeelDecorated(true);
        JFrame frame = new JFrame("Material");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(512, 512);
        frame.setLocationRelativeTo(null);

        frame.getContentPane().add(canvas);
        frame.setVisible(true);
        canvas.requestFocusInWindow();
    }

    /*
     * Initialize z-buffer, projection matrix, light source, and lighting model.
     * Do not specify a material property here.
     */
    public void init(GLAutoDrawable drawable) {
        GL gl = drawable.getGL();
        //
        float ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f };
        float diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f };
        float specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
        float position[] = { 0.0f, 3.0f, 2.0f, 0.0f };
        float lmodel_ambient[] = { 0.4f, 0.4f, 0.4f, 1.0f };
        float local_view[] = { 0.0f };

        gl.glEnable(GL.GL_DEPTH_TEST);
        gl.glDepthFunc(GL.GL_LESS);

        gl.glLightfv(GL.GL_LIGHT0, GL.GL_AMBIENT, ambient, 0);
        gl.glLightfv(GL.GL_LIGHT0, GL.GL_DIFFUSE, diffuse, 0);
        gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, position, 0);
        gl.glLightModelfv(GL.GL_LIGHT_MODEL_AMBIENT, lmodel_ambient, 0);
        gl.glLightModelfv(GL.GL_LIGHT_MODEL_LOCAL_VIEWER, local_view, 0);

        gl.glEnable(GL.GL_LIGHTING);
        gl.glEnable(GL.GL_LIGHT0);

        gl.glClearColor(0.0f, 0.1f, 0.1f, 0.0f);
    }

    /*
     * Draw twelve spheres in 3 rows with 4 columns. The spheres in the first
     * row have materials with no ambient reflection. The second row has
     * materials with significant ambient reflection. The third row has
     * materials with colored ambient reflection. The first column has materials
     * with blue, diffuse reflection only. The second column has blue diffuse
     * reflection, as well as specular reflection with a low shininess exponent.
     * The third column has blue diffuse reflection, as well as specular
     * reflection with a high shininess exponent (a more concentrated
     * highlight). The fourth column has materials which also include an
     * emissive component. glTranslatef() is used to move spheres to their
     * appropriate locations.
     */
    public void display(GLAutoDrawable drawable) {
        GL gl = drawable.getGL();
        GLUT glut = new GLUT();
        //
        float no_mat[] = { 0.0f, 0.0f, 0.0f, 1.0f };
        float mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f };
        float mat_ambient_color[] = { 0.8f, 0.8f, 0.2f, 1.0f };
        float mat_diffuse[] = { 0.1f, 0.5f, 0.8f, 1.0f };
        float mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
        float no_shininess[] = { 0.0f };
        float low_shininess[] = { 5.0f };
        float high_shininess[] = { 100.0f };
        float mat_emission[] = { 0.3f, 0.2f, 0.2f, 0.0f };

        gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
        /*
         * draw sphere in first row, first column diffuse reflection only; no
         * ambient or specular
         */
        gl.glPushMatrix();
        gl.glTranslatef(-3.75f, 3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, no_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in first row, second column diffuse and specular
         * reflection; low shininess; no ambient
         */
        gl.glPushMatrix();
        gl.glTranslatef(-1.25f, 3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, low_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in first row, third column diffuse and specular
         * reflection; high shininess; no ambient
         */
        gl.glPushMatrix();
        gl.glTranslatef(1.25f, 3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, high_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in first row, fourth column diffuse reflection; emission;
         * no ambient or specular reflection
         */
        gl.glPushMatrix();
        gl.glTranslatef(3.75f, 3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, no_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, mat_emission, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in second row, first column ambient and diffuse
         * reflection; no specular
         */
        gl.glPushMatrix();
        gl.glTranslatef(-3.75f, 0.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, no_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in second row, second column ambient, diffuse and
         * specular reflection; low shininess
         */
        gl.glPushMatrix();
        gl.glTranslatef(-1.25f, 0.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, low_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in second row, third column ambient, diffuse and specular
         * reflection; high shininess
         */
        gl.glPushMatrix();
        gl.glTranslatef(1.25f, 0.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, high_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in second row, fourth column ambient and diffuse
         * reflection; emission; no specular
         */
        gl.glPushMatrix();
        gl.glTranslatef(3.75f, 0.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, no_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, mat_emission, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in third row, first column colored ambient and diffuse
         * reflection; no specular
         */
        gl.glPushMatrix();
        gl.glTranslatef(-3.75f, -3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient_color, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, no_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in third row, second column colored ambient, diffuse and
         * specular reflection; low shininess
         */
        gl.glPushMatrix();
        gl.glTranslatef(-1.25f, -3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient_color, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, low_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in third row, third column colored ambient, diffuse and
         * specular reflection; high shininess
         */
        gl.glPushMatrix();
        gl.glTranslatef(1.25f, -3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient_color, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, high_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, no_mat, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        /*
         * draw sphere in third row, fourth column colored ambient and diffuse
         * reflection; emission; no specular
         */
        gl.glPushMatrix();
        gl.glTranslatef(3.75f, -3.0f, 0.0f);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, mat_ambient_color, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_diffuse, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, no_mat, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, no_shininess, 0);
        gl.glMaterialfv(GL.GL_FRONT, GL.GL_EMISSION, mat_emission, 0);
        glut.glutSolidSphere(1.0f, 20, 20);
        gl.glPopMatrix();
        gl.glFlush();
    }

    public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {
        GL gl = drawable.getGL();
        gl.glViewport(0, 0, w, h);
        gl.glMatrixMode(GL.GL_PROJECTION);
        gl.glLoadIdentity();
        if (w <= (h * 2)) //
            gl.glOrtho(-6.0, 6.0, -3.0 * ((float) h * 2) / (float) w, //
                    3.0 * ((float) h * 2) / (float) w, -10.0, 10.0);
        else
            gl.glOrtho(-6.0 * (float) w / ((float) h * 2), //
                    6.0 * (float) w / ((float) h * 2), -3.0, 3.0, -10.0, 10.0);
        gl.glMatrixMode(GL.GL_MODELVIEW);
        gl.glLoadIdentity();
    }

    public void displayChanged(GLAutoDrawable drawable, boolean modeChanged,
            boolean deviceChanged) {
    }

    public void keyTyped(KeyEvent arg0) {
    }

    public void keyPressed(KeyEvent key) {
        switch (key.getKeyCode()) {
        case KeyEvent.VK_ESCAPE:
            System.exit(0);
            break;
        default:
            break;
        }
    }

    public void keyReleased(KeyEvent arg0) {
    }
}