Copied JOGL_2_SANDBOX r350 on to trunk; JOGL_2_SANDBOX branch is now closed

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/../svn-server-sync/jogl-demos/trunk@352 3298f667-5e0e-4b4a-8ed4-a3559d26a5f4

1 files changed, 1086 insertions, 0 deletions

diff --git a/src/demos/vertexProgWarp/VertexProgWarp.java b/src/demos/vertexProgWarp/VertexProgWarp.java
new file mode 100644
index 0000000..e6dbca7
--- /dev/null
+++ b/src/demos/vertexProgWarp/VertexProgWarp.java
@@ -0,0 +1,1086 @@
+/*
+ * Portions Copyright (C) 2003 Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+
+/*
+ *
+ * COPYRIGHT NVIDIA CORPORATION 2003. ALL RIGHTS RESERVED.
+ * BY ACCESSING OR USING THIS SOFTWARE, YOU AGREE TO:
+ *
+ *  1) ACKNOWLEDGE NVIDIA'S EXCLUSIVE OWNERSHIP OF ALL RIGHTS
+ *     IN AND TO THE SOFTWARE;
+ *
+ *  2) NOT MAKE OR DISTRIBUTE COPIES OF THE SOFTWARE WITHOUT
+ *     INCLUDING THIS NOTICE AND AGREEMENT;
+ *
+ *  3) ACKNOWLEDGE THAT TO THE MAXIMUM EXTENT PERMITTED BY
+ *     APPLICABLE LAW, THIS SOFTWARE IS PROVIDED *AS IS* AND
+ *     THAT NVIDIA AND ITS SUPPLIERS DISCLAIM ALL WARRANTIES,
+ *     EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED
+ *     TO, IMPLIED WARRANTIES OF MERCHANTABILITY  AND FITNESS
+ *     FOR A PARTICULAR PURPOSE.
+ *
+ * IN NO EVENT SHALL NVIDIA OR ITS SUPPLIERS BE LIABLE FOR ANY
+ * SPECIAL, INCIDENTAL, INDIRECT, OR CONSEQUENTIAL DAMAGES
+ * WHATSOEVER (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS
+ * OF BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF BUSINESS
+ * INFORMATION, OR ANY OTHER PECUNIARY LOSS), INCLUDING ATTORNEYS'
+ * FEES, RELATING TO THE USE OF OR INABILITY TO USE THIS SOFTWARE,
+ * EVEN IF NVIDIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+
+package demos.vertexProgWarp;
+
+import demos.common.Demo;
+import demos.common.DemoListener;
+import demos.util.DurationTimer;
+import demos.util.SystemTime;
+import demos.util.Time;
+import demos.util.Triceratops;
+import gleem.BSphere;
+import gleem.BSphereProvider;
+import gleem.ExaminerViewer;
+import gleem.ManipManager;
+import gleem.MouseButtonHelper;
+import gleem.linalg.Vec3f;
+import java.awt.BorderLayout;
+import java.awt.Frame;
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.io.IOException;
+import javax.media.opengl.GL;
+import javax.media.opengl.GL2ES1;
+import javax.media.opengl.GL2;
+import javax.media.opengl.GLAutoDrawable;
+import javax.media.opengl.awt.AWTGLAutoDrawable;
+import javax.media.opengl.awt.GLCanvas;
+import javax.media.opengl.glu.GLU;
+import javax.media.opengl.glu.GLUquadric;
+import com.sun.opengl.util.Animator;
+import com.sun.opengl.util.BufferUtil;
+import javax.swing.JOptionPane;
+
+
+
+/**
+   Simple space-warp/distortion vertex program demo<br>
+   (Press the space bar to switch through programs)<br><p>
+
+   [email protected] 9/2000, based on Cass's vtxprog_silhouette<br><p>
+
+        Ported to Java by Kenneth Russell
+*/
+
+public class VertexProgWarp extends Demo {
+  private Frame    frame;
+  private Animator animator;
+  private volatile boolean quit;
+
+  private GLAutoDrawable drawable;
+  private DurationTimer timer = new DurationTimer();
+  private boolean  firstRender = true;
+  private int      frameCount;
+
+  public static void main(String[] args) {
+    new VertexProgWarp().run(args);
+  }
+
+  public void run(String[] args) {
+
+    VertexProgWarp demo = new VertexProgWarp();
+    GLCanvas canvas = new GLCanvas();
+    canvas.addGLEventListener(demo);
+
+    canvas.addKeyListener(new KeyAdapter() {
+        public void keyPressed(KeyEvent e) {
+          dispatchKey(e.getKeyCode(), e.getKeyChar());
+        }
+      });
+
+    final Animator animator = new Animator(canvas);
+    demo.setDemoListener(new DemoListener() {
+        public void shutdownDemo() {
+          runExit(animator);
+        }
+        public void repaint() {}
+      });
+
+    final Frame frame = new Frame();
+    demo.setTitleSetter(new VertexProgWarp.TitleSetter() {
+        public void setTitle(String title) {
+          frame.setTitle(title);
+        }
+      });
+    frame.setLayout(new BorderLayout());
+    canvas.setSize(512, 512);
+    frame.add(canvas, BorderLayout.CENTER);
+    frame.pack();
+    frame.setVisible(true);
+    canvas.requestFocus();
+
+    frame.addWindowListener(new WindowAdapter() {
+        public void windowClosing(WindowEvent e) {
+          runExit(animator);
+        }
+      });
+
+    animator.start();
+  }
+
+  public static abstract class TitleSetter {
+    public abstract void setTitle(String title);
+  }
+
+  public void setTitleSetter(TitleSetter setter) {
+    titleSetter = setter;
+  }
+
+  private TitleSetter titleSetter;
+  private boolean initComplete;
+  
+  // period of 4-term Taylor approximation to sin isn't quite 2*M_PI
+  private static final float    SIN_PERIOD   = 3.079f;
+  private static final int      NUM_OBJS     = 5;
+  private static final int      NUM_PROGS    = 7;
+  private              int[]    programs     = new int[NUM_PROGS];
+  private float zNear = 0.1f;
+  private float zFar  = 10.0f;
+  private int program = 2;
+  private int obj = 2;
+  private boolean[] b = new boolean[256];
+  private boolean wire = false;
+  private boolean toggleWire = false;
+  private boolean animating = true;
+  private boolean doViewAll = true;
+
+  private Time  time = new SystemTime();
+  private float anim = 0.0f;
+  private float animScale = 7.0f;
+  private float amp  = 0.05f;
+  private float freq = 8.0f;
+  private float d    = 4.0f;
+
+  private GLU glu = new GLU();
+  private ExaminerViewer viewer;
+
+  public void init(GLAutoDrawable drawable) {
+    initComplete = false;
+    GL2 gl = drawable.getGL().getGL2();
+
+    float cc = 0.0f;
+    gl.glClearColor(cc, cc, cc, 1);
+
+    gl.glColor3f(1,1,1);
+    gl.glEnable(GL.GL_DEPTH_TEST);
+    gl.glDisable(GL.GL_CULL_FACE);
+
+    try {
+      initExtension(gl, "GL_vertex_program");
+    } catch (RuntimeException e) {
+      shutdownDemo();
+      throw(e);
+    }
+
+    for(int i=0; i<NUM_OBJS; i++) {
+      gl.glNewList(i+1, GL2.GL_COMPILE);
+      drawObject(gl, i);
+      gl.glEndList();
+    }    
+
+    for(int i=0; i<NUM_PROGS; i++) {
+      int[] vtxProgTmp = new int[1];
+      gl.glGenProgramsARB(1, vtxProgTmp, 0);
+      programs[i] = vtxProgTmp[0];
+      gl.glBindProgramARB(GL2.GL_VERTEX_PROGRAM_ARB, programs[i]);
+      gl.glProgramStringARB(GL2.GL_VERTEX_PROGRAM_ARB, GL2.GL_PROGRAM_FORMAT_ASCII_ARB, programTexts[i].length(),
+                         programTexts[i]);
+    }
+
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 0, 0.0f, 0.0f, 1.0f, 0.0f);   // light position/direction
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 1, 0.0f, 1.0f, 0.0f, 0.0f);   // diffuse color
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 2, 1.0f, 1.0f, 1.0f, 0.0f);   // specular color
+
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 3, 0.0f, 1.0f, 2.0f, 3.0f);   // smoothstep constants
+
+    // sin Taylor series constants - 1, 1/3!, 1/5!, 1/7!
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 4, 1.0f, 1.0f / (3*2), 1.0f / (5*4*3*2), 1.0f / (7*6*5*4*3*2));
+
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 5, 1.0f / (2.0f * SIN_PERIOD), 2.0f * SIN_PERIOD, SIN_PERIOD, SIN_PERIOD/2.0f);
+
+    // sin wave frequency, amplitude
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 6, 1.0f, 0.2f, 0.0f, 0.0f);
+
+    // phase animation
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 7, 0.0f, 0.0f, 0.0f, 0.0f);
+
+    // fisheye sphere radius
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 8, 1.0f, 0.0f, 0.0f, 0.0f);
+
+    setWindowTitle();
+
+    doViewAll = true;
+
+    b['p'] = true;
+      
+    // Register the window with the ManipManager
+    ManipManager manager = ManipManager.getManipManager();
+    manager.registerWindow((AWTGLAutoDrawable) drawable);
+    this.drawable = drawable;
+
+    viewer = new ExaminerViewer(MouseButtonHelper.numMouseButtons());
+    viewer.setNoAltKeyMode(true);
+    viewer.setAutoRedrawMode(false);
+    viewer.attach((AWTGLAutoDrawable) drawable, new BSphereProvider() {
+        public BSphere getBoundingSphere() {
+          return new BSphere(new Vec3f(0, 0, 0), 1.0f);
+        }
+      });
+    viewer.setVertFOV((float) Math.toRadians(60));
+    viewer.setZNear(zNear);
+    viewer.setZFar(zFar);
+    initComplete = true;
+  }
+
+  public void dispose(GLAutoDrawable drawable) {
+  }
+
+  public void display(GLAutoDrawable drawable) {
+    if (!initComplete) {
+      return;
+    }
+
+    if (!firstRender) {
+      if (++frameCount == 30) {
+        timer.stop();
+        System.err.println("Frames per second: " + (30.0f / timer.getDurationAsSeconds()));
+        timer.reset();
+        timer.start();
+        frameCount = 0;
+      }
+    } else {
+      firstRender = false;
+      timer.start();
+    }
+
+    time.update();
+
+    GL2 gl = drawable.getGL().getGL2();
+
+    gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
+
+    if (toggleWire) {
+      wire = !wire;
+      if (wire)
+        gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL2.GL_LINE);
+      else
+        gl.glPolygonMode(GL.GL_FRONT_AND_BACK, GL2.GL_FILL);
+      toggleWire = false;
+    }
+
+    gl.glPushMatrix();
+
+    if (doViewAll) {
+      viewer.viewAll(gl);
+      doViewAll = false;
+    }
+
+    if (animating) {
+      anim -= (float) (animScale * time.deltaT());
+    }
+
+    viewer.update(gl);
+    ManipManager.getManipManager().updateCameraParameters((AWTGLAutoDrawable) drawable, viewer.getCameraParameters());
+    ManipManager.getManipManager().render((AWTGLAutoDrawable) drawable, gl);
+
+    gl.glBindProgramARB(GL2.GL_VERTEX_PROGRAM_ARB, programs[program]);
+    gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 7, anim, 0.0f, 0.0f, 0.0f);
+
+    if (program==6)
+      gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 6, (float) Math.sin(anim)*amp*50.0f, 0.0f, 0.0f, 0.0f);
+    else
+      gl.glProgramEnvParameter4fARB(GL2.GL_VERTEX_PROGRAM_ARB, 6, freq, amp, d, d+1);
+
+    if (b['p'])
+      gl.glEnable(GL2.GL_VERTEX_PROGRAM_ARB);
+
+    gl.glDisable(GL.GL_TEXTURE_2D);
+    gl.glCallList(obj+1);
+
+    gl.glDisable(GL2.GL_VERTEX_PROGRAM_ARB);
+
+    gl.glPopMatrix();
+  }
+
+  // Unused routines
+  public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
+  public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
+
+  //----------------------------------------------------------------------
+  // Internals only below this point
+  //
+  public void shutdownDemo() {
+    ManipManager.getManipManager().unregisterWindow((AWTGLAutoDrawable) drawable);
+    drawable.removeGLEventListener(this);
+    super.shutdownDemo();
+  }
+
+  private void initExtension(GL2 gl, String glExtensionName) {
+    if (!gl.isExtensionAvailable(glExtensionName)) {
+      final String message = "OpenGL extension \"" + glExtensionName + "\" not available";
+      new Thread(new Runnable() {
+          public void run() {
+            JOptionPane.showMessageDialog(null, message, "Unavailable extension", JOptionPane.ERROR_MESSAGE);
+            shutdownDemo();
+          }
+        }).start();
+      throw new RuntimeException(message);
+    }
+  }
+
+  private void dispatchKey(int keyCode, char k) {
+    if (k < 256)
+      b[k] = !b[k];
+
+    switch (keyCode) {
+    case KeyEvent.VK_HOME:
+    case KeyEvent.VK_R:
+      anim = 0.0f;
+      amp = 0.05f;
+      freq = 8.0f;
+      d = 4.0f;
+      doViewAll = true;
+      break;
+
+    case KeyEvent.VK_LEFT:
+    case KeyEvent.VK_KP_LEFT:
+      program--;
+      if (program < 0)
+        program = NUM_PROGS-1;
+      setWindowTitle();
+      break;
+
+    case KeyEvent.VK_RIGHT:
+    case KeyEvent.VK_KP_RIGHT:
+      program = (program + 1) % NUM_PROGS;
+      setWindowTitle();
+      break;
+
+    case KeyEvent.VK_F1:
+    case KeyEvent.VK_H:
+      String endl = System.getProperty("line.separator");
+      endl = endl + endl;
+      String msg = ("F1/h - Help" + endl +
+                    "Home - Reset" + endl +
+                    "Left Button & Mouse - Rotate viewpoint" + endl +
+                    "1..5 - Switch object (Sphere, Torus, Triceratop, Cube, Cylinder)" + endl +
+                    "- / + - Change amplitude" + endl +
+                    "[ / ] - Change frequency" + endl +
+                    ", / . - Change square fisheye size" + endl +
+                    "Left - Next vertex program" + endl +
+                    "Right - Previous vertex program" + endl +
+                    "W - Toggle wireframe" + endl +
+                    "Space - Toggle animation" + endl +
+                    "Esc/q - Exit program" + endl);
+      JOptionPane.showMessageDialog(null, msg, "Help", JOptionPane.INFORMATION_MESSAGE);
+      break;
+
+    case KeyEvent.VK_ESCAPE:
+    case KeyEvent.VK_Q:
+      shutdownDemo();
+      return;
+
+    case KeyEvent.VK_W:
+      toggleWire = true;
+      break;
+
+    case KeyEvent.VK_EQUALS:
+    case KeyEvent.VK_PLUS:
+      amp += 0.01;
+      break;
+
+    case KeyEvent.VK_MINUS:
+      amp -= 0.01;
+      break;
+
+    case KeyEvent.VK_CLOSE_BRACKET:
+      freq += 0.5;
+      break;
+
+    case KeyEvent.VK_OPEN_BRACKET:
+      freq -= 0.5;
+      break;
+
+    case KeyEvent.VK_PERIOD:
+      d += 0.1;
+      break;
+
+    case KeyEvent.VK_COMMA:
+      d -= 0.1;
+      break;
+
+    case KeyEvent.VK_SPACE:
+      // Could also start/stop Animator here
+      animating = !animating;
+      break;
+
+    case KeyEvent.VK_1:
+      obj = 0;
+      break;
+
+    case KeyEvent.VK_2:
+      obj = 1;
+      break;
+
+    case KeyEvent.VK_3:
+      obj = 2;
+      break;
+
+    case KeyEvent.VK_4:
+      obj = 3;
+      break;
+
+    case KeyEvent.VK_5:
+      obj = 4;
+      break;
+    }
+  }
+
+  private void setWindowTitle() {
+    titleSetter.setTitle("SpaceWarp - " + programNames[program]);
+  }
+
+  private void drawObject(GL2 gl, int which) {
+    switch(which) {
+    case 0:
+      drawSphere(gl, 0.5f, 100, 100);
+      break;
+
+    case 1:
+      drawTorus(gl, 0.25f, 0.5f, 100, 100);
+      break;
+
+    case 2:
+      try {
+        Triceratops.drawObject(gl);
+      } catch (IOException e) {
+        shutdownDemo();
+        throw new RuntimeException(e);
+      }
+      break;
+
+    case 3:
+      drawCube(gl);
+      break;
+
+    case 4:
+      drawCylinder(gl);
+      break;
+    }
+  }
+
+  private void drawSphere(GL2 gl, float radius, int slices, int stacks) {
+
+    int J = stacks;
+    int I = slices;
+
+    for(int j = 0; j < J; j++) {
+      float v = j/(float) J;
+      float phi = (float) (v * 2 * Math.PI);
+      float v2 = (j+1)/(float) J;
+      float phi2 = (float) (v2 * 2 * Math.PI);
+
+      gl.glBegin(GL2.GL_QUAD_STRIP);
+
+      for(int i = 0; i < I; i++) {	
+        float u = i/(I-1.0f);
+        float theta = (float) (u * Math.PI);
+        float x,y,z,nx,ny,nz;
+
+        nx = (float) (Math.cos(theta)*Math.cos(phi));
+        ny = (float) (Math.sin(theta)*Math.cos(phi));
+        nz = (float) (Math.sin(phi));
+        x = radius * nx;
+        y = radius * ny;
+        z = radius * nz;
+
+        gl.glColor3f ( u,  v, 0.0f);
+        gl.glNormal3f(nx, ny, nz);
+        gl.glVertex3f( x,  y, z);
+
+        nx = (float) (Math.cos(theta)*Math.cos(phi2));
+        ny = (float) (Math.sin(theta)*Math.cos(phi2));
+        nz = (float) (Math.sin(phi2));
+        x = radius * nx;
+        y = radius * ny;
+        z = radius * nz;
+
+        gl.glColor3f ( u,  v+(1.0f/(J-1.0f)), 0.0f);
+        gl.glNormal3f(nx,                 ny,   nz);
+        gl.glVertex3f( x,                  y,    z);
+      }
+      gl.glEnd();
+    }
+  }
+
+  private void drawTorus(GL2 gl, float meridian_radius, float core_radius,
+                         int meridian_slices, int core_slices) {
+
+    int J = meridian_slices;
+    int I = core_slices;
+
+    for(int j = 0; j < J-1; j++) {
+
+      float v = j/(J-1.0f);
+      float rho = (float) (v * 2.0f * Math.PI);
+      float v2 = (j+1)/(J-1.0f);
+      float rho2 = (float) (v2 * 2.0f * Math.PI);
+      gl.glBegin(GL2.GL_QUAD_STRIP);
+
+      for(int i = 0; i < I; i++) {	
+        float u = i/(I-1.0f);
+        float theta = (float) (u * 2.0f * Math.PI);
+        float x,y,z,nx,ny,nz;
+
+        x  = (float) (core_radius*Math.cos(theta) + meridian_radius*Math.cos(theta)*Math.cos(rho));
+        y  = (float) (core_radius*Math.sin(theta) + meridian_radius*Math.sin(theta)*Math.cos(rho));
+        z  = (float) (meridian_radius*Math.sin(rho));
+        nx = (float) (Math.cos(theta)*Math.cos(rho));
+        ny = (float) (Math.sin(theta)*Math.cos(rho));
+        nz = (float) (Math.sin(rho));	
+
+        gl.glColor3f ( u,  v, 0.0f);
+        gl.glNormal3f(nx, ny, nz);
+        gl.glVertex3f( x,  y,  z);
+
+        x  = (float) (core_radius*Math.cos(theta) + meridian_radius*Math.cos(theta)*Math.cos(rho2));
+        y  = (float) (core_radius*Math.sin(theta) + meridian_radius*Math.sin(theta)*Math.cos(rho2));
+        z  = (float) (meridian_radius*Math.sin(rho2));
+        nx = (float) (Math.cos(theta)*Math.cos(rho2));
+        ny = (float) (Math.sin(theta)*Math.cos(rho2));
+        nz = (float) (Math.sin(rho2));	
+
+        gl.glColor3f ( u,  v, 0.0f);
+        gl.glNormal3f(nx, ny, nz);
+        gl.glVertex3f( x,  y,  z);
+      }
+      gl.glEnd();
+    }
+  }
+
+  private void drawCube(GL2 gl) {
+    int cr = 40;
+    float scaleFactor = 0.5f;
+
+    // back
+    gl.glColor3f(1.0f, 0.0f, 0.0f);
+    gl.glNormal3f(0.0f, 0.0f, -1.0f);
+    drawGrid(gl, cr, cr, scaleFactor, -1.0f, -1.0f, -1.0f, 2.0f, 0.0f, 0.0f, 0.0f, 2.0f, 0.0f);
+
+    // front
+    gl.glColor3f(1.0f, 0.0f, 0.0f);
+    gl.glNormal3f(0.0f, 0.0f, 1.0f);
+    drawGrid(gl, cr, cr, scaleFactor, -1.0f, -1.0f, 1.0f, 2.0f, 0.0f, 0.0f, 0.0f, 2.0f, 0.0f);
+
+    // left
+    gl.glColor3f(0.0f, 1.0f, 0.0f);
+    gl.glNormal3f(-1.0f, 0.0f, 0.0f);
+    drawGrid(gl, cr, cr, scaleFactor, -1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 2.0f, 0.0f, 2.0f, 0.0f);
+
+    // right
+    gl.glColor3f(0.0f, 0.0f, 1.0f);
+    gl.glNormal3f(1.0f, 0.0f, 0.0f);
+    drawGrid(gl, cr, cr, scaleFactor, 1.0f, -1.0f, -1.0f, 0.0f, 0.0f, 2.0f, 0.0f, 2.0f, 0.0f);
+
+    // bottom
+    gl.glColor3f(1.0f, 1.0f, 0.0f);
+    gl.glNormal3f(0.0f,-1.0f, 0.0f);
+    drawGrid(gl, cr, cr, scaleFactor, -1.0f, -1.0f, -1.0f, 2.0f, 0.0f, 0.0f, 0.0f, 0.0f, 2.0f);
+
+    // top
+    gl.glColor3f(0.0f, 1.0f, 1.0f);
+    gl.glNormal3f(0.0f, 1.0f, 0.0f);
+    drawGrid(gl, cr, cr, scaleFactor, -1.0f, 1.0f, -1.0f, 2.0f, 0.0f, 0.0f, 0.0f, 0.0f, 2.0f);
+  }
+
+  private void drawGrid(GL2 gl, int rows, int cols,
+                        float scaleFactor,
+                        float sx, float sy, float sz,
+                        float ux, float uy, float uz,
+                        float vx, float vy, float vz) {
+    int x, y;
+
+    for(y=0; y<rows; y++) {
+      gl.glBegin(GL2.GL_QUAD_STRIP);
+      for(x=0; x<=cols; x++) {
+        float u = x / (float) cols;
+        float v = y / (float) rows;
+        float v2 = v + (1.0f / (float) rows);
+
+        gl.glTexCoord2f(u, v);
+        gl.glVertex3f(scaleFactor * (sx + (u*ux) + (v*vx)),
+                      scaleFactor * (sy + (u*uy) + (v*vy)),
+                      scaleFactor * (sz + (u*uz) + (v*vz)));
+
+        gl.glTexCoord2f(u, v2);
+        gl.glVertex3f(scaleFactor * (sx + (u*ux) + (v2*vx)),
+                      scaleFactor * (sy + (u*uy) + (v2*vy)),
+                      scaleFactor * (sz + (u*uz) + (v2*vz)));
+      }
+      gl.glEnd();
+    }
+  }
+
+  private void drawCylinder(GL2 gl) {
+    GLUquadric quad;
+
+    quad = glu.gluNewQuadric();
+    glu.gluQuadricDrawStyle  (quad, GLU.GLU_FILL);
+    glu.gluQuadricOrientation(quad, GLU.GLU_OUTSIDE);
+    glu.gluQuadricNormals    (quad, GLU.GLU_SMOOTH);
+    glu.gluQuadricTexture    (quad, true);
+
+    gl.glMatrixMode(GL2ES1.GL_MODELVIEW);
+    gl.glPushMatrix();
+    gl.glTranslatef(-1.0f, 0.0f, 0.0f);
+    gl.glRotatef   (90.0f, 0.0f, 1.0f, 0.0f);
+
+    glu.gluCylinder(quad, 0.25f, 0.25f, 2.0f, 60, 30);
+    gl.glPopMatrix();
+
+    glu.gluDeleteQuadric(quad);
+  }
+
+  private static final String[] programNames = new String[] {
+    "Normal",
+    "Pulsate",
+    "Wave",
+    "Square fisheye",
+    "Spherical fisheye",
+    "Ripple",
+    "Twist"
+  };
+
+  private static final String programSetup =
+    "PARAM mvp [4]          = { state.matrix.mvp };                # modelview projection matrix\n" +
+    "PARAM mvit[4]          = { state.matrix.modelview.invtrans }; # modelview matrix inverse transpose\n" +
+    "PARAM mv  [4]          = { state.matrix.modelview };          # modelview matrix\n" +
+    "PARAM proj[4]          = { state.matrix.projection };         # projection matrix\n" +
+    "PARAM lightPos         = program.env[0];                      # light position/direction\n" +
+    "PARAM diffuseCol       = program.env[1];                      # diffuse color\n" +
+    "PARAM specularCol      = program.env[2];                      # specular color\n" +
+    "PARAM smoothstep       = program.env[3];                      # smoothstep constants\n" +
+    "PARAM sinTaylorConst1  = program.env[4];                      # sin Taylor series constants 1 of 2\n" +
+    "PARAM sinTaylorConst2  = program.env[5];                      # sin Taylor series constants 2 of 2\n" +
+    "PARAM sinFreqAmplitude = program.env[6];                      # sin wave frequency, amplitude\n" +
+    "PARAM phaseAnim        = program.env[7];                      # phase animation\n" +
+    "PARAM fisheyeRadius    = program.env[8];                      # fisheye sphere radius\n" +
+    "\n" +
+    "# Per vertex inputs\n" +
+    "ATTRIB iPos            = vertex.position;                     # position\n" +
+    "ATTRIB iTex            = vertex.texcoord;                     # tex coord\n" +
+    "ATTRIB iNorm           = vertex.normal;                       # normal\n" +
+    "\n" +
+    "# Outputs\n" +
+    "OUTPUT oPos            = result.position;                     # position\n" +
+    "OUTPUT oCol0           = result.color;                        # color\n" +
+    "OUTPUT oTex0           = result.texcoord;                     # tex coord\n" +
+    "\n" +
+    "# Temporaries\n" +
+    "TEMP r0;\n" +
+    "TEMP r1;\n" +
+    "TEMP r2;\n" +
+    "TEMP r3;\n" +
+    "TEMP r4;\n";
+
+  private static final String[] programTexts = new String[] {
+    //
+    // Transform with diffuse lighting
+    //
+    "!!ARBvp1.0\n" +
+    "#Simple transform and diffuse lighting\n" +
+    programSetup +
+    "DP4   oPos.x, mvp[0], iPos ;   # object x MVP -> clip\n" +
+    "DP4   oPos.y, mvp[1], iPos ;\n" +
+    "DP4   oPos.z, mvp[2], iPos ;\n" +
+    "DP4   oPos.w, mvp[3], iPos ;\n" +
+    "\n" +
+    "DP3   r1.x, mvit[0], iNorm ;        # normal x MV-1T -> lighting normal\n" +
+    "DP3   r1.y, mvit[1], iNorm ;\n" +
+    "DP3   r1.z, mvit[2], iNorm ;\n" +
+    "\n" +
+    "DP3   r0, lightPos, r1 ;              # L.N\n" +
+    "MUL   oCol0.xyz, r0, diffuseCol ;     # col = L.N * diffuse\n" +
+    "MOV   oTex0, iTex;\n" +
+    "END\n",
+
+    //
+    // Pulsate
+    //
+    "!!ARBvp1.0\n" +
+    "#Displace geometry along normal based on sine function of distance from origin\n" +
+    "#(in object space)\n" +
+    "#sinFreqAmplitude.x = wave frequency\n" +
+    "#sinFreqAmplitude.y = wave amplitude\n" +
+    "#sinTaylorConst2    = PI constants\n" +
+    "#sinTaylorConst1    = Taylor series constants (see below)\n" +
+    "\n" +
+    programSetup +
+    "MOV   r0, iPos; \n" +
+    "\n" +
+    "#calculate distance from (0, 0, 0)\n" +
+    "DP3   r3.x, r0, r0;\n" +
+    "RSQ   r3.x, r3.x;\n" +
+    "RCP   r3.x, r3.x;\n" +
+    "\n" +
+    "MUL   r3.x, r3.x, sinFreqAmplitude.x; # wave frequency\n" +
+    "ADD   r3.x, r3.x, phaseAnim.x; # phase animation\n" +
+    "\n" +
+    "#reduce to period of 2*PI\n" +
+    "MUL   r2, r3.x, sinTaylorConst2.x;\n" +
+    "EXP   r4, r2.x;            # r4.y = r2.x - floor(r2.x)\n" +
+    "MUL   r3.x, r4.y, sinTaylorConst2.y;\n" +
+    "\n" +
+    "# offset to -PI - PI\n" +
+    "ADD   r3.x, r3.x, -sinTaylorConst2.z;\n" +
+    "\n" +
+    "#Sine approximation using Taylor series (accurate between -PI and PI) :\n" +
+    "#sin(x)  = x - (x^3)/3! + (x^5)/5! - (x^7)/7! + ...\n" +
+    "#sin(x) ~= x*(1 - (x^2)*(1/3! - (x^2)(1/5! - (x^2)/7! )))\n" +
+    "#        = x * (a - y*(b - y*(c - y*d)))\n" +
+    "#where\n" +
+    "#a = 1.0    sinTaylorConst1.x\n" +
+    "#b = 1/3!   sinTaylorConst1.y\n" +
+    "#c = 1/5!   sinTaylorConst1.z\n" +
+    "#d = 1/7!   sinTaylorConst1.w\n" +
+    "#y = x^2    r2\n" +
+    "\n" +
+    "#r1.x = sin(r3.x);\n" +
+    "\n" +
+    "MUL   r2, r3.x, r3.x;\n" +
+    "MAD   r1, -r2, sinTaylorConst1.w, sinTaylorConst1.z;\n" +
+    "MAD   r1, r1, -r2, sinTaylorConst1.y;\n" +
+    "MAD   r1, r1, -r2, sinTaylorConst1.x;\n" +
+    "MUL   r1, r1, r3.x;\n" +
+    "\n" +
+    "#displace vertex along normal\n" +
+    "MUL   r1.x, r1.x, sinFreqAmplitude.y;\n" +
+    "MAX   r1.x, r1.x, smoothstep.x;     # r1.x = max(r1.x, 0.0);\n" +
+    "MUL   r2.xyz, iNorm, r1.x;\n" +
+    "ADD   r0.xyz, r0, r2;\n" +
+    "\n" +
+    "#simple lighting\n" +
+    "DP3   r1.x, mvit[0], iNorm ;    # normal x MV-1T -> lighting normal\n" +
+    "DP3   r1.y, mvit[1], iNorm ;\n" +
+    "DP3   r1.z, mvit[2], iNorm ;\n" +
+    "\n" +
+    "DP3   r2, lightPos, r1 ;          # light position DOT normal\n" +
+    "MUL   oCol0.xyz, r2, diffuseCol ; # col = ldotn * diffuse\n" +
+    "\n" +
+    "MOV   oTex0, iTex;\n" +
+    "\n" +
+    "DP4   oPos.x, mvp[0], r0 ;    # object x MVP -> clip\n" +
+    "DP4   oPos.y, mvp[1], r0 ;\n" +
+    "DP4   oPos.z, mvp[2], r0 ;\n" +
+    "DP4   oPos.w, mvp[3], r0 ;\n" +
+    "\n" +
+    "END\n",
+
+    //
+    // Wave
+    //
+    "!!ARBvp1.0\n" +
+    "# Perturb vertices in clip space with sine wave\n" +
+    "# x += sin((y*freq)+anim) * amp\n" +
+    programSetup +
+    "DP4   r0.x, mvp[0], iPos ;\n" +
+    "DP4   r0.y, mvp[1], iPos ;\n" +
+    "DP4   r0.z, mvp[2], iPos ;\n" +
+    "DP4   r0.w, mvp[3], iPos ;\n" +
+    "\n" +
+    "MUL   r3.x, r0.y, sinFreqAmplitude.x;    # wave frequency\n" +
+    "ADD   r3.x, r3.x, phaseAnim.x;    # phase animation\n" +
+    "\n" +
+    "# reduce to period of 2*PI\n" +
+    "MUL   r2, r3.x, sinTaylorConst2.x;\n" +
+    "EXP   r4, r2.x;               # r4.y = r2.x - floor(r2.x)\n" +
+    "MUL   r3.x, r4.y, sinTaylorConst2.y;\n" +
+    "\n" +
+    "# offset to -PI - PI\n" +
+    "ADD   r3.x, r3.x, -sinTaylorConst2.z;\n" +
+    "\n" +
+    "# r1.x = sin(r3.x);\n" +
+    "MUL   r2,   r3.x, r3.x;\n" +
+    "MAD   r1, -r2, sinTaylorConst1.w, sinTaylorConst1.z;\n" +
+    "MAD   r1, r1, -r2, sinTaylorConst1.y;\n" +
+    "MAD   r1, r1, -r2, sinTaylorConst1.x;\n" +
+    "MUL   r1, r1, r3.x;\n" +
+    "\n" +
+    "MAD   r0.x, r1.x, sinFreqAmplitude.y, r0.x;\n" +
+    "\n" +
+    "# simple lighting\n" +
+    "DP3   r1.x, mvit[0], iNorm ;    # normal x MV-1T -> lighting normal\n" +
+    "DP3   r1.y, mvit[1], iNorm ;\n" +
+    "DP3   r1.z, mvit[2], iNorm ;\n" +
+    "DP3   r2, lightPos, r1 ;          # light position DOT normal\n" +
+    "MUL   oCol0.xyz, r2, diffuseCol ; # col = ldotn * diffuse\n" +
+    "MOV   oTex0, iTex;\n" +
+    "\n" +
+    "MOV   oPos, r0;\n" +
+    "\n" +
+    "END\n",
+
+    //
+    // Fisheye
+    //
+    "!!ARBvp1.0\n" +
+    "#Fisheye distortion based on function:\n" +
+    "#f(x)=(d+1)/(d+(1/x))\n" +
+    "#maps the [0,1] interval monotonically onto [0,1]\n" +
+    "\n" +
+    "#sinFreqAmplitude.z = d\n" +
+    "#sinFreqAmplitude.w = d+1\n" +
+    programSetup +
+    "\n" +
+    "DP4   r0.x, mvp[0], iPos ;\n" +
+    "DP4   r0.y, mvp[1], iPos ;\n" +
+    "DP4   r0.z, mvp[2], iPos ;\n" +
+    "DP4   r0.w, mvp[3], iPos ;\n" +
+    "\n" +
+    "# do perspective divide\n" +
+    "RCP   r1, r0.w;\n" +
+    "MUL   r0, r0, r1.w;\n" +
+    "\n" +
+    "MAX   r1, r0, -r0;            # r1 = abs(r0)\n" +
+    "\n" +
+    "SLT   r2, r0, smoothstep.x;        # r2 = (r0 < 0.0) ? 1.0 : 0.0\n" +
+    "SGE   r3, r0, smoothstep.x;        # r3 = (r0 >= 0.0) ? 1.0 : 0.0\n" +
+    "\n" +
+    "# distort x\n" +
+    "# h(x)=(d+1)/(d+(1/x))\n" +
+    "RCP   r1.x, r1.x;             # r1 = 1 / r1\n" +
+    "ADD   r1.x, r1.x, sinFreqAmplitude.z;    # r1 += d\n" +
+    "RCP   r1.x, r1.x;             # r1 = 1 / r1\n" +
+    "MUL   r1.x, r1.x, sinFreqAmplitude.w;    # r1 *= d + 1\n" +
+    "\n" +
+    "# distort y\n" +
+    "RCP   r1.y, r1.y;             # r1 = 1 / r1\n" +
+    "ADD   r1.y, r1.y, sinFreqAmplitude.z;    # r1 += d\n" +
+    "RCP   r1.y, r1.y;             # r1 = 1 / r1\n" +
+    "MUL   r1.y, r1.y, sinFreqAmplitude.w;    # r1 *= d + 1\n" +
+    "\n" +
+    "# handle negative cases\n" +
+    "MUL   r4.xy, r1, r3;          # r4 = r1 * r3\n" +
+    "MAD   r1.xy, r1, -r2, r4;     # r1 = r1 * -r2 + r4\n" +
+    "\n" +
+    "# simple lighting\n" +
+    "DP3   r2.x, mvit[0], iNorm ;   # normal x MV-1T -> lighting normal\n" +
+    "DP3   r2.y, mvit[1], iNorm ;\n" +
+    "DP3   r2.z, mvit[2], iNorm ;\n" +
+    "DP3   r3, lightPos, r2 ;         # light position DOT normal\n" +
+    "MUL   oCol0.xyz, r3, diffuseCol ; # col = ldotn * diffuse\n" +
+    "\n" +
+    "MOV   oTex0, iTex;\n" +
+    "\n" +
+    "MOV   oPos, r1;\n" +
+    "\n" +
+    "END\n",
+
+    //
+    // Spherize
+    //
+    "!!ARBvp1.0\n" +
+    "# Spherical fish-eye distortion\n" +
+    "# in clip space\n" +
+    programSetup +
+    "DP4   r0.x, mvp[0], iPos;\n" +
+    "DP4   r0.y, mvp[1], iPos;\n" +
+    "DP4   r0.z, mvp[2], iPos;\n" +
+    "DP4   r0.w, mvp[3], iPos;\n" +
+    "\n" +
+    "# do perspective divide\n" +
+    "RCP   r1.x, r0.w;\n" +
+    "MUL   r2, r0, r1.x;\n" +
+    "\n" +
+    "# calculate distance from centre\n" +
+    "MUL   r1.x, r2.x, r2.x;\n" +
+    "MAD   r1.x, r2.y, r2.y, r1.x;\n" +
+    "RSQ   r1.x, r1.x; # r1.x = 1 / sqrt(x*x+y*y)\n" +
+    "\n" +
+    "# calculate r3 = normalized direction vector\n" +
+    "MUL   r3.xy, r0, r1.x;\n" +
+    "\n" +
+    "RCP   r1.x, r1.x;             # r1.x = actual distance\n" +
+    "MIN   r1.x, r1.x, smoothstep.y;    # r1.x = min(r1.x, 1.0)\n" +
+    "\n" +
+    "# remap based on: f(x) = sqrt(1-x^2)\n" +
+    "ADD   r1.x, smoothstep.y, -r1.x;\n" +
+    "MAD   r1.x, -r1.x, r1.x, smoothstep.y;\n" +
+    "RSQ   r1.x, r1.x;\n" +
+    "RCP   r1.x, r1.x;\n" +
+    "\n" +
+    "# move vertex to new distance from centre\n" +
+    "MUL   r0.xy, r3, r1.x;\n" +
+    "\n" +
+    "# simple lighting\n" +
+    "DP3   r2.x, mvit[0], iNorm;    # normal x MV-1T -> lighting normal\n" +
+    "DP3   r2.y, mvit[1], iNorm;\n" +
+    "DP3   r2.z, mvit[2], iNorm;\n" +
+    "DP3   r3, lightPos, r2 ;         # light position DOT normal\n" +
+    "MUL   oCol0.xyz, r3, diffuseCol ; # col = ldotn * diffuse\n" +
+    "\n" +
+    "MOV   oTex0, iTex;\n" +
+    "\n" +
+    "MOV   oPos, r0;\n" +
+    "\n" +
+    "END\n",
+    
+    //
+    // Ripple
+    //
+    "!!ARBvp1.0\n" +
+    "# Ripple distortion\n" +
+    programSetup +
+    "DP4   r0.x, mvp[0], iPos;\n" +
+    "DP4   r0.y, mvp[1], iPos;\n" +
+    "DP4   r0.z, mvp[2], iPos;\n" +
+    "DP4   r0.w, mvp[3], iPos;\n" +
+    "\n" +
+    "# do perspective divide\n" +
+    "RCP   r1.x, r0.w;\n" +
+    "MUL   r4, r0, r1.x;\n" +
+    "\n" +
+    "# calculate distance from centre\n" +
+    "MUL   r1.x, r4.x, r4.x;\n" +
+    "MAD   r1.x, r4.y, r4.y, r1.x;\n" +
+    "RSQ   r1.x, r1.x;\n" +
+    "\n" +
+    "RCP   r1.x, r1.x;\n" +
+    "\n" +
+    "MUL   r1.x, r1.x, sinFreqAmplitude.x;    # wave frequency\n" +
+    "ADD   r1.x, r1.x, phaseAnim.x;    # phase animation\n" +
+    "\n" +
+    "# reduce to period of 2*PI\n" +
+    "MUL   r2, r1.x, sinTaylorConst2.x;      # r2 = r1 / 2.0 * PI\n" +
+    "EXP   r4, r2.x;               # r4.y = r2.x - floor(r2.x)\n" +
+    "MUL   r1.x, r4.y, sinTaylorConst2.y;\n" +
+    "\n" +
+    "# offset to -PI - PI\n" +
+    "ADD   r1.x, r1.x, -sinTaylorConst2.z;\n" +
+    "\n" +
+    "# r3.x = sin(r1.x)\n" +
+    "MUL   r2, r1.x, r1.x;\n" +
+    "MAD   r3, -r2, sinTaylorConst1.w, sinTaylorConst1.z;\n" +
+    "MAD   r3, r3, -r2, sinTaylorConst1.y;\n" +
+    "MAD   r3, r3, -r2, sinTaylorConst1.x;\n" +
+    "MUL   r3, r3, r1.x;\n" +
+    "\n" +
+    "MUL   r3.x, r3.x, sinFreqAmplitude.y;\n" +
+    "\n" +
+    "# move vertex towards centre based on distance\n" +
+    "MAD   r0.xy, r0, -r3.x, r0;\n" +
+    "\n" +
+    "# lighting\n" +
+    "DP3   r2.x, mvit[0], iNorm;     # normal x MV-1T -> lighting normal\n" +
+    "DP3   r2.y, mvit[1], iNorm;\n" +
+    "DP3   r2.z, mvit[2], iNorm;\n" +
+    "DP3   r3, lightPos, r2;           # light position DOT normal\n" +
+    "MUL   oCol0.xyz, r3, diffuseCol;  # col = ldotn * diffuse\n" +
+    "\n" +
+    "MOV   oTex0, iTex;\n" +
+    "\n" +
+    "MOV   oPos, r0;\n" +
+    "\n" +
+    "END\n",
+
+    //
+    // Twist
+    //
+    "!!ARBvp1.0\n" +
+    "# Twist\n" +
+    programSetup +
+    "MOV   r0, iPos;\n" +
+    "\n" +
+    "MUL   r1.x, r0.x, sinFreqAmplitude.x;        # frequency\n" +
+    "\n" +
+    "# calculate sin(angle) and cos(angle)\n" +
+    "ADD   r1.y, r1.x, -sinTaylorConst2.w;       # r1.y = r1.x + PI/2.0\n" +
+    "\n" +
+    "# reduce to period of 2*PI\n" +
+    "MUL   r2, r1, sinTaylorConst2.x;            # r2 = r1 / 2.0 * PI\n" +
+    "EXP   r3.y, r2.x;                 # r2.y = r2.x - floor(r2.x)\n" +
+    "MOV   r3.x, r3.y;\n" +
+    "EXP   r3.y, r2.y;                 # r2.y = r2.x - floor(r2.x)\n" +
+    "MAD   r2, r3, sinTaylorConst2.y, -sinTaylorConst2.z;  # r2 = (r3 * 2.0*PI) - M_PI\n" +
+    "\n" +
+    "# r4.x = sin(r2.x);\n" +
+    "# r4.y = cos(r2.y);\n" +
+    "# parallel taylor series\n" +
+    "MUL   r3,   r2, r2;\n" +
+    "MAD   r4, -r3, sinTaylorConst1.w, sinTaylorConst1.z;\n" +
+    "MAD   r4, r4, -r3, sinTaylorConst1.y;\n" +
+    "MAD   r4, r4, -r3, sinTaylorConst1.x;\n" +
+    "MUL   r4, r4, r2;\n" +
+    "\n" +
+    "# x    y    z    w\n" +
+    "# R:\n" +
+    "# 1    0    0    0\n" +
+    "# 0    c   -s    0\n" +
+    "# 0    s    c    0\n" +
+    "# 0    0    0    1\n" +
+    "\n" +
+    "# c = cos(a)\n" +
+    "# s = sin(a)\n" +
+    "\n" +
+    "# calculate rotation around X\n" +
+    "MOV   r1, r0;\n" +
+    "\n" +
+    "MUL   r1.y, r0.y, r4.y;\n" +
+    "MAD   r1.y, r0.z, -r4.x, r1.y;    # ny = y*cos(a) - z*sin(a)\n" +
+    "\n" +
+    "MUL   r1.z, r0.y, r4.x;\n" +
+    "MAD   r1.z, r0.z, r4.y, r1.z;     # nz = y*sin(a) + z*cos(a)\n" +
+    "\n" +
+    "DP4   oPos.x, mvp[0], r1;        # object x MVP -> clip\n" +
+    "DP4   oPos.y, mvp[1], r1;\n" +
+    "DP4   oPos.z, mvp[2], r1;\n" +
+    "DP4   oPos.w, mvp[3], r1;\n" +
+    "\n" +
+    "# rotate normal\n" +
+    "MOV   r2, iNorm;\n" +
+    "MUL   r2.y, iNorm.y, r4.y;\n" +
+    "MAD   r2.y, iNorm.z, -r4.x, r2.y;   # ny = y*cos(a) - z*sin(a)\n" +
+    "\n" +
+    "MUL   r2.z, iNorm.y, r4.x;\n" +
+    "MAD   r2.z, iNorm.z, r4.y, r2.z;    # nz = y*sin(a) + z*cos(a)\n" +
+    "\n" +
+    "# diffuse lighting\n" +
+    "DP3   r1.x, mvit[0], r2;             # normal x MV-1T -> lighting normal\n" +
+    "DP3   r1.y, mvit[1], r2;\n" +
+    "DP3   r1.z, mvit[2], r2;\n" +
+    "\n" +
+    "DP3   r3, lightPos, r1;              # light position DOT normal\n" +
+    "MUL   oCol0.xyz, r3, diffuseCol;     # col = ldotn * diffuse\n" +
+    "\n" +
+    "MOV   oTex0, iTex;\n" +
+    "\n" +
+    "END\n"
+  };
+
+  private static void runExit(final Animator animator) {
+    // Note: calling System.exit() synchronously inside the draw,
+    // reshape or init callbacks can lead to deadlocks on certain
+    // platforms (in particular, X11) because the JAWT's locking
+    // routines cause a global AWT lock to be grabbed. Instead run
+    // the exit routine in another thread.
+    new Thread(new Runnable() {
+        public void run() {
+          animator.stop();
+          System.exit(0);
+        }
+      }).start();
+  }
+}