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package demos.es1;
import java.nio.*;
import javax.media.opengl.*;
import javax.media.opengl.glu.*;
import com.sun.opengl.util.*;
import com.sun.javafx.newt.*;
public class RedSquare {
public static void main(String[] args) {
System.out.println("RedSquare.main()");
try {
Window window = Window.create(0); // dummy VisualID
// Size OpenGL to Video Surface
int width = 800;
int height = 480;
if (!window.setFullscreen(true)) {
window.setSize(width, height);
}
// Hook this into EGL
GLDrawableFactory.initialize(GLDrawableFactory.PROFILE_GLES1);
GLDrawableFactory factory = GLDrawableFactory.getFactory();
GLCapabilities caps = new GLCapabilities();
// For emulation library, use 16 bpp
caps.setRedBits(5);
caps.setGreenBits(5);
caps.setBlueBits(5);
caps.setDepthBits(16);
GLDrawable drawable = factory.getGLDrawable(new Long(window.getWindowHandle()), caps, null);
drawable.setRealized(true);
GLContext context = drawable.createContext(null);
context.makeCurrent();
GL gl = context.getGL();
GLU glu = new GLU();
//----------------------------------------------------------------------
// Code for GLEventListener.init()
//
System.out.println("Entering initialization");
System.out.println("GL_VERSION=" + gl.glGetString(GL.GL_VERSION));
System.out.println("GL_EXTENSIONS:");
System.out.println(" " + gl.glGetString(GL.GL_EXTENSIONS));
// Allocate vertex arrays
FloatBuffer colors = BufferUtil.newFloatBuffer(16);
FloatBuffer vertices = BufferUtil.newFloatBuffer(12);
// Fill them up
colors.put( 0, 1); colors.put( 1, 0); colors.put( 2, 0); colors.put( 3, 1);
colors.put( 4, 1); colors.put( 5, 0); colors.put( 6, 0); colors.put( 7, 1);
colors.put( 8, 1); colors.put( 9, 0); colors.put(10, 0); colors.put(11, 1);
colors.put(12, 1); colors.put(13, 0); colors.put(14, 0); colors.put(15, 1);
vertices.put(0, -2); vertices.put( 1, 2); vertices.put( 2, 0);
vertices.put(3, 2); vertices.put( 4, 2); vertices.put( 5, 0);
vertices.put(6, -2); vertices.put( 7, -2); vertices.put( 8, 0);
vertices.put(9, 2); vertices.put(10, -2); vertices.put(11, 0);
gl.glEnableClientState(GL.GL_VERTEX_ARRAY);
gl.glVertexPointer(3, GL.GL_FLOAT, 0, vertices);
gl.glEnableClientState(GL.GL_COLOR_ARRAY);
gl.glColorPointer(4, GL.GL_FLOAT, 0, colors);
// OpenGL Render Settings
gl.glClearColor(0, 0, 0, 1);
gl.glEnable(GL.GL_DEPTH_TEST);
//----------------------------------------------------------------------
// Code for GLEventListener.display()
//
long startTime = System.currentTimeMillis();
long curTime;
int ang = 0;
while ((System.currentTimeMillis() - startTime) < 10000) {
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
// Set location in front of camera
width = window.getWidth();
height = window.getHeight();
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, (float)width / (float)height, 1.0f, 100.0f);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -10);
gl.glRotatef(ang, 0, 0, 1);
ang++;
// Draw a square
gl.glDrawArrays(GL.GL_TRIANGLE_STRIP, 0, 4);
drawable.swapBuffers();
window.pumpMessages();
try {
Thread.sleep(10);
} catch (InterruptedException e) {
}
}
// Shut things down cooperatively
context.release();
context.destroy();
drawable.setRealized(false);
factory.shutdown();
System.out.println("RedSquare shut down cleanly.");
} catch (Throwable t) {
t.printStackTrace();
}
System.exit(0);
}
}
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