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| import java.awt.EventQueue;
import javax.media.opengl.DebugGL;
import javax.media.opengl.GL;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCanvas;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.glu.GLU;
import javax.media.opengl.glu.GLUquadric;
import javax.swing.JFrame;
import com.sun.opengl.util.FPSAnimator;
import com.sun.opengl.util.texture.Texture;
@SuppressWarnings("serial")
public class MyGLCanvas extends GLCanvas implements GLEventListener {
private static MyGLCanvas canvas = new MyGLCanvas(300, 300, new GLCapabilities());
private static FPSAnimator animator;
private GLU glu;
private Texture earthTexture;
public MyGLCanvas(int width, int height, GLCapabilities cap) {
super(cap);
setSize(width, height);
cap.setRedBits(8);
cap.setBlueBits(8);
cap.setGreenBits(8);
cap.setAlphaBits(8);
addGLEventListener(this);
}
@Override
public void display(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
setCamera(gl, glu, 30);
float SHINE_ALL_DIRECTIONS = 1;
float[] lightPos = { -30, 0, 0, SHINE_ALL_DIRECTIONS };
float[] lightColorAmbient = { 0.2f, 0.2f, 0.2f, 1f };
float[] lightColorSpecular = { 0.8f, 0.8f, 0.8f, 1f };
gl.glLightfv(GL.GL_LIGHT1, GL.GL_POSITION, lightPos, 0);
gl.glLightfv(GL.GL_LIGHT1, GL.GL_AMBIENT, lightColorAmbient, 0);
gl.glLightfv(GL.GL_LIGHT1, GL.GL_SPECULAR, lightColorSpecular, 0);
gl.glEnable(GL.GL_LIGHT1);
gl.glEnable(GL.GL_LIGHTING);
float[] rgba = { 1f, 1f, 1f };
gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, rgba, 0);
gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, rgba, 0);
gl.glMaterialf(GL.GL_FRONT, GL.GL_SHININESS, 0.5f);
earthTexture.enable();
earthTexture.bind();
GLUquadric earth = glu.gluNewQuadric();
glu.gluQuadricTexture(earth, true);
glu.gluQuadricDrawStyle(earth, GLU.GLU_FILL);
glu.gluQuadricNormals(earth, GLU.GLU_FLAT);
glu.gluQuadricOrientation(earth, GLU.GLU_OUTSIDE);
final float radius = 6.378f;
final int slices = 16;
final int stacks = 16;
glu.gluSphere(earth, radius, slices, stacks);
glu.gluDeleteQuadric(earth);
}
private void setCamera(GL gl, GLU glu2, int distance) {
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
float widthHeightRatio = (float) getWidth() / (float) getHeight();
glu.gluPerspective(45, widthHeightRatio, 1, 1000);
glu.gluLookAt(0, 0, distance, 0, 0, 0, 0, 1, 0);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
@Override
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
drawable.setGL(new DebugGL(gl));
gl.glEnable(GL.GL_DEPTH_TEST);
gl.glDepthFunc(GL.GL_LEQUAL);
gl.glShadeModel(GL.GL_SMOOTH);
gl.glHint(GL.GL_PERSPECTIVE_CORRECTION_HINT, GL.GL_NICEST);
gl.glClearColor(0f, 0f, 0f, 1f);
glu = new GLU();
earthTexture = LoadTexture.loadTexture("earthmap1k.jpg");
animator = new FPSAnimator(this, 60);
animator.start();
}
@Override
public void reshape(GLAutoDrawable drawable, int x, int y, int width,
int height) {
GL gl = drawable.getGL();
gl.glViewport(0, 0, width, height);
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("Universe");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(canvas.getPreferredSize());
frame.getContentPane().add(canvas);
frame.setVisible(true);
}
});
canvas.requestFocus();
}
@Override
public void displayChanged(GLAutoDrawable arg0, boolean arg1, boolean arg2) {
}
} |
