Added contribution from user GKW on community.java.net forums to fix

pixel format selection for GLJPanel on Win32 by using
ChoosePixelFormat rather than DefaultGLCapabilitiesChooser. Modified
dist targets to include Cg native libraries.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@25 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

1 files changed, 308 insertions, 0 deletions

diff --git a/src/demos/jgears/JGears.java b/src/demos/jgears/JGears.java
new file mode 100644
index 0000000..8229a4b
--- /dev/null
+++ b/src/demos/jgears/JGears.java
@@ -0,0 +1,308 @@
+package demos.jgears;
+
+import java.awt.*;
+import java.awt.event.*;
+
+import net.java.games.jogl.*;
+
+/**
+ * JGears.java <BR>
+ * author: Brian Paul (converted to Java by Ron Cemer and Sven Goethel) <P>
+ *
+ * This version is equal to Brian Paul's version 1.2 1999/10/21
+ */
+
+public class JGears {
+  public static void main(String[] args) {
+    Frame frame = new Frame("Gear Demo");
+    GLJPanel drawable = GLDrawableFactory.getFactory().createGLJPanel(new GLCapabilities());
+
+    // Use debug pipeline
+    //    drawable.setGL(new DebugGL(drawable.getGL()));
+    System.err.println("DRAWABLE GL IS: " + drawable.getGL().getClass().getName());
+    System.err.println("DRAWABLE GLU IS: " + drawable.getGLU().getClass().getName());
+
+    drawable.addGLEventListener(new GearRenderer());
+    frame.add(drawable);
+    frame.setSize(300, 300);
+    final Animator animator = new Animator(drawable);
+    frame.addWindowListener(new WindowAdapter() {
+        public void windowClosing(WindowEvent e) {
+          animator.stop();
+          System.exit(0);
+        }
+      });
+    frame.show();
+    animator.start();
+  }
+
+  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) {}
+  }
+}
+