import java.awt.*; import java.awt.event.*; import net.java.games.jogl.*; class MyFrame extends Frame implements Runnable { GLCanvas canvas; private volatile boolean shouldStop; private volatile boolean stopped; public static void main(String[] args) { new MyFrame(); } MyFrame() { GLDrawableFactory fac = GLDrawableFactory.getFactory(); canvas = fac.createGLCanvas(new GLCapabilities()); canvas.addGLEventListener(new GearRenderer()); add(canvas); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { new Thread(new Runnable() { public void run() { shouldStop = true; while (!stopped) { try { Thread.sleep(10); } catch (InterruptedException e) { } } System.exit(0); } }).start(); } }); // setVisible(true) here will have callbacks work correctly // setSize(256, 256); // setVisible(true); Thread th = new Thread(this); th.start(); setSize(256, 256); setVisible(true); } public void run() { canvas.setRenderingThread(Thread.currentThread()); canvas.setNoAutoRedrawMode(true); while(!shouldStop) { canvas.display(); try { Thread.sleep(10); } catch (InterruptedException e) { } } stopped = true; } static class GearRenderer implements GLEventListener, MouseListener, MouseMotionListener { private float view_rotx = 20.0f, view_roty = 30.0f, view_rotz = 0.0f; private int gear1, gear2, gear3; private float angle = 0.0f; private int prevMouseX, prevMouseY; private boolean mouseRButtonDown = false; private GL gl; private GLDrawable gldrawable; public void init(GLDrawable drawable) { gl = drawable.getGL(); this.gldrawable = drawable; System.err.println("INIT GL IS: " + gl.getClass().getName()); float pos[] = { 5.0f, 5.0f, 10.0f, 0.0f }; float red[] = { 0.8f, 0.1f, 0.0f, 1.0f }; float green[] = { 0.0f, 0.8f, 0.2f, 1.0f }; float blue[] = { 0.2f, 0.2f, 1.0f, 1.0f }; gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, pos); gl.glEnable(GL.GL_CULL_FACE); gl.glEnable(GL.GL_LIGHTING); gl.glEnable(GL.GL_LIGHT0); gl.glEnable(GL.GL_DEPTH_TEST); /* make the gears */ gear1 = gl.glGenLists(1); gl.glNewList(gear1, GL.GL_COMPILE); gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT_AND_DIFFUSE, red); gear(1.0f, 4.0f, 1.0f, 20, 0.7f); gl.glEndList(); gear2 = gl.glGenLists(1); gl.glNewList(gear2, GL.GL_COMPILE); gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT_AND_DIFFUSE, green); gear(0.5f, 2.0f, 2.0f, 10, 0.7f); gl.glEndList(); gear3 = gl.glGenLists(1); gl.glNewList(gear3, GL.GL_COMPILE); gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT_AND_DIFFUSE, blue); gear(1.3f, 2.0f, 0.5f, 10, 0.7f); gl.glEndList(); gl.glEnable(GL.GL_NORMALIZE); drawable.addMouseListener(this); drawable.addMouseMotionListener(this); } public void reshape(GLDrawable drawable, int x, int y, int width, int height) { float h = (float)height / (float)width; gl.glMatrixMode(GL.GL_PROJECTION); System.err.println("GL_VENDOR: " + gl.glGetString(GL.GL_VENDOR)); System.err.println("GL_RENDERER: " + gl.glGetString(GL.GL_RENDERER)); System.err.println("GL_VERSION: " + gl.glGetString(GL.GL_VERSION)); System.err.println(); System.err.println("glLoadTransposeMatrixfARB() supported: " + gl.isFunctionAvailable("glLoadTransposeMatrixfARB")); if (!gl.isFunctionAvailable("glLoadTransposeMatrixfARB")) { // --- not using extensions gl.glLoadIdentity(); } else { // --- using extensions final float[] identityTranspose = new float[] { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 }; gl.glLoadTransposeMatrixfARB(identityTranspose); } gl.glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f); gl.glMatrixMode(GL.GL_MODELVIEW); gl.glLoadIdentity(); gl.glTranslatef(0.0f, 0.0f, -40.0f); } public void display(GLDrawable drawable) { angle += 2.0f; gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT); gl.glPushMatrix(); gl.glRotatef(view_rotx, 1.0f, 0.0f, 0.0f); gl.glRotatef(view_roty, 0.0f, 1.0f, 0.0f); gl.glRotatef(view_rotz, 0.0f, 0.0f, 1.0f); gl.glPushMatrix(); gl.glTranslatef(-3.0f, -2.0f, 0.0f); gl.glRotatef(angle, 0.0f, 0.0f, 1.0f); gl.glCallList(gear1); gl.glPopMatrix(); gl.glPushMatrix(); gl.glTranslatef(3.1f, -2.0f, 0.0f); gl.glRotatef(-2.0f * angle - 9.0f, 0.0f, 0.0f, 1.0f); gl.glCallList(gear2); gl.glPopMatrix(); gl.glPushMatrix(); gl.glTranslatef(-3.1f, 4.2f, 0.0f); gl.glRotatef(-2.0f * angle - 25.0f, 0.0f, 0.0f, 1.0f); gl.glCallList(gear3); gl.glPopMatrix(); gl.glPopMatrix(); } public void displayChanged(GLDrawable drawable, boolean modeChanged, boolean deviceChanged) {} private void gear(float inner_radius, float outer_radius, float width, int teeth, float tooth_depth) { int i; float r0, r1, r2; float angle, da; float u, v, len; r0 = inner_radius; r1 = outer_radius - tooth_depth / 2.0f; r2 = outer_radius + tooth_depth / 2.0f; da = 2.0f * (float) Math.PI / teeth / 4.0f; gl.glShadeModel(GL.GL_FLAT); gl.glNormal3f(0.0f, 0.0f, 1.0f); /* draw front face */ gl.glBegin(GL.GL_QUAD_STRIP); for (i = 0; i <= teeth; i++) { angle = i * 2.0f * (float) Math.PI / teeth; gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f); if(i < teeth) { gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle + 3.0f * da), r1 * (float)Math.sin(angle + 3.0f * da), width * 0.5f); } } gl.glEnd(); /* draw front sides of teeth */ gl.glBegin(GL.GL_QUADS); for (i = 0; i < teeth; i++) { angle = i * 2.0f * (float) Math.PI / teeth; gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f); gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), width * 0.5f); gl.glVertex3f(r2 * (float)Math.cos(angle + 2.0f * da), r2 * (float)Math.sin(angle + 2.0f * da), width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle + 3.0f * da), r1 * (float)Math.sin(angle + 3.0f * da), width * 0.5f); } gl.glEnd(); /* draw back face */ gl.glBegin(GL.GL_QUAD_STRIP); for (i = 0; i <= teeth; i++) { angle = i * 2.0f * (float) Math.PI / teeth; gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f); gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f); gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f); } gl.glEnd(); /* draw back sides of teeth */ gl.glBegin(GL.GL_QUADS); for (i = 0; i < teeth; i++) { angle = i * 2.0f * (float) Math.PI / teeth; gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f); gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), -width * 0.5f); gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), -width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f); } gl.glEnd(); /* draw outward faces of teeth */ gl.glBegin(GL.GL_QUAD_STRIP); for (i = 0; i < teeth; i++) { angle = i * 2.0f * (float) Math.PI / teeth; gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f); u = r2 * (float)Math.cos(angle + da) - r1 * (float)Math.cos(angle); v = r2 * (float)Math.sin(angle + da) - r1 * (float)Math.sin(angle); len = (float)Math.sqrt(u * u + v * v); u /= len; v /= len; gl.glNormal3f(v, -u, 0.0f); gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), width * 0.5f); gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), -width * 0.5f); gl.glNormal3f((float)Math.cos(angle), (float)Math.sin(angle), 0.0f); gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), width * 0.5f); gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), -width * 0.5f); u = r1 * (float)Math.cos(angle + 3 * da) - r2 * (float)Math.cos(angle + 2 * da); v = r1 * (float)Math.sin(angle + 3 * da) - r2 * (float)Math.sin(angle + 2 * da); gl.glNormal3f(v, -u, 0.0f); gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f); gl.glNormal3f((float)Math.cos(angle), (float)Math.sin(angle), 0.0f); } gl.glVertex3f(r1 * (float)Math.cos(0), r1 * (float)Math.sin(0), width * 0.5f); gl.glVertex3f(r1 * (float)Math.cos(0), r1 * (float)Math.sin(0), -width * 0.5f); gl.glEnd(); gl.glShadeModel(GL.GL_SMOOTH); /* draw inside radius cylinder */ gl.glBegin(GL.GL_QUAD_STRIP); for (i = 0; i <= teeth; i++) { angle = i * 2.0f * (float) Math.PI / teeth; gl.glNormal3f(-(float)Math.cos(angle), -(float)Math.sin(angle), 0.0f); gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f); gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f); } gl.glEnd(); } // Methods required for the implementation of MouseListener public void mouseEntered(MouseEvent e) {} public void mouseExited(MouseEvent e) {} public void mousePressed(MouseEvent e) { prevMouseX = e.getX(); prevMouseY = e.getY(); if ((e.getModifiers() & e.BUTTON3_MASK) != 0) { mouseRButtonDown = true; } } public void mouseReleased(MouseEvent e) { if ((e.getModifiers() & e.BUTTON3_MASK) != 0) { mouseRButtonDown = false; } } public void mouseClicked(MouseEvent e) {} // Methods required for the implementation of MouseMotionListener public void mouseDragged(MouseEvent e) { int x = e.getX(); int y = e.getY(); Dimension size = e.getComponent().getSize(); float thetaY = 360.0f * ( (float)(x-prevMouseX)/(float)size.width); float thetaX = 360.0f * ( (float)(prevMouseY-y)/(float)size.height); prevMouseX = x; prevMouseY = y; view_rotx += thetaX; view_roty += thetaY; } public void mouseMoved(MouseEvent e) {} } }