Merged JSR-231 branch on to the main JOGL trunk. The main trunk now

contains the evolving JSR-231 Reference Implementation and the JSR-231
branch is permanently closed.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@401 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 0 insertions, 1049 deletions

diff --git a/src/net/java/games/jogl/impl/GLUquadricImpl.java b/src/net/java/games/jogl/impl/GLUquadricImpl.java
deleted file mode 100755
index dfc167dcb..000000000
--- a/src/net/java/games/jogl/impl/GLUquadricImpl.java
+++ /dev/null
@@ -1,1049 +0,0 @@
-/*
-** License Applicability. Except to the extent portions of this file are
-** made subject to an alternative license as permitted in the SGI Free
-** Software License B, Version 1.1 (the "License"), the contents of this
-** file are subject only to the provisions of the License. You may not use
-** this file except in compliance with the License. You may obtain a copy
-** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
-** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
-** 
-** http://oss.sgi.com/projects/FreeB
-** 
-** Note that, as provided in the License, the Software is distributed on an
-** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
-** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
-** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
-** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
-** 
-** Original Code. The Original Code is: OpenGL Sample Implementation,
-** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
-** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
-** Copyright in any portions created by third parties is as indicated
-** elsewhere herein. All Rights Reserved.
-** 
-** Additional Notice Provisions: The application programming interfaces
-** established by SGI in conjunction with the Original Code are The
-** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
-** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
-** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
-** Window System(R) (Version 1.3), released October 19, 1998. This software
-** was created using the OpenGL(R) version 1.2.1 Sample Implementation
-** published by SGI, but has not been independently verified as being
-** compliant with the OpenGL(R) version 1.2.1 Specification.
-**
-** $Date$ $Revision$
-** $Header$
-*/
-
-/* 
- * Copyright (c) 2002-2004 LWJGL Project
- * All rights reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are 
- * met:
- * 
- * * Redistributions of source code must retain the above copyright 
- *   notice, this list of conditions and the following disclaimer.
- *
- * * Redistributions in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- *
- * * Neither the name of 'LWJGL' nor the names of 
- *   its contributors may be used to endorse or promote products derived 
- *   from this software without specific prior written permission.
- * 
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
- * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- * 
- * - Redistribution of source code must retain the above copyright
- *   notice, this list of conditions and the following disclaimer.
- * 
- * - Redistribution in binary form must reproduce the above copyright
- *   notice, this list of conditions and the following disclaimer in the
- *   documentation and/or other materials provided with the distribution.
- * 
- * Neither the name of Sun Microsystems, Inc. or the names of
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- * 
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
- * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
- * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
- * MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
- * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
- * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
- * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
- * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
- * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
- * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
- * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
- * 
- * You acknowledge that this software is not designed or intended for use
- * in the design, construction, operation or maintenance of any nuclear
- * facility.
- */
-
-package net.java.games.jogl.impl;
-
-import net.java.games.jogl.*;
-
-/**
- * GLUquadricImpl.java
- * 
- * 
- * Created 22-dec-2003 (originally Quadric.java)
- * @author Erik Duijs
- * @author Kenneth Russell
- */
-
-class GLUquadricImpl implements GLUquadric {
-  private int drawStyle;
-  private int orientation;
-  private boolean textureFlag;
-  private int normals;
-
-  GLUquadricImpl() {
-    drawStyle = GLU.GLU_FILL;
-    orientation = GLU.GLU_OUTSIDE;
-    textureFlag = false;
-    normals = GLU.GLU_SMOOTH;
-  }
-
-  /**
-   * specifies the draw style for quadrics.  
-   *
-   * The legal values are as follows:
-   *
-   * GLU.FILL:       Quadrics are rendered with polygon primitives. The polygons
-   *                 are drawn in a counterclockwise fashion with respect to
-   *                 their normals (as defined with glu.quadricOrientation).
-   *
-   * GLU.LINE:       Quadrics are rendered as a set of lines.
-   *
-   * GLU.SILHOUETTE: Quadrics are rendered as a set of lines, except that edges
-   * 		   separating coplanar faces will not be drawn.
-   *
-   * GLU.POINT:       Quadrics are rendered as a set of points.
-   * 
-   * @param drawStyle The drawStyle to set
-   */
-  void setDrawStyle(int drawStyle) {
-    this.drawStyle = drawStyle;
-  }
-
-  /**
-   * specifies what kind	of normals are desired for quadrics.
-   * The legal values	are as follows:
-   *
-   * GLU.NONE:     No normals are generated.
-   *
-   * GLU.FLAT:     One normal is generated for every facet of a quadric.
-   *
-   * GLU.SMOOTH:   One normal is generated for every vertex of a quadric.  This
-   *               is the default.
-   * 
-   * @param normals The normals to set
-   */
-  void setNormals(int normals) {
-    this.normals = normals;
-  }
-
-  /**
-   * specifies what kind of orientation is desired for.
-   * The orientation	values are as follows:
-   *
-   * GLU.OUTSIDE:  Quadrics are drawn with normals pointing outward.
-   *
-   * GLU.INSIDE:   Normals point inward. The default is GLU.OUTSIDE.
-   *
-   * Note that the interpretation of outward and inward depends on the quadric
-   * being drawn.
-   * 
-   * @param orientation The orientation to set
-   */
-  void setOrientation(int orientation) {
-    this.orientation = orientation;
-  }
-
-  /**
-   * specifies if texture coordinates should be generated for
-   * quadrics rendered with qobj. If the value of textureCoords is true,
-   * then texture coordinates are generated, and if textureCoords is false,
-   * they are not.. The default is false.
-   *
-   * The manner in which texture coordinates are generated depends upon the
-   * specific quadric rendered.
-   * 
-   * @param textureFlag The textureFlag to set
-   */
-  void setTextureFlag(boolean textureFlag) {
-    this.textureFlag = textureFlag;
-  }
-
-  /**
-   * Returns the drawStyle.
-   * @return int
-   */
-  int getDrawStyle() {
-    return drawStyle;
-  }
-
-  /**
-   * Returns the normals.
-   * @return int
-   */
-  int getNormals() {
-    return normals;
-  }
-
-  /**
-   * Returns the orientation.
-   * @return int
-   */
-  int getOrientation() {
-    return orientation;
-  }
-
-  /**
-   * Returns the textureFlag.
-   * @return boolean
-   */
-  boolean getTextureFlag() {
-    return textureFlag;
-  }
-
-  /**
-   * draws a cylinder oriented along the z axis. The base of the
-   * cylinder is placed at z = 0, and the top at z=height. Like a sphere, a
-   * cylinder is subdivided around the z axis into slices, and along the z axis
-   * into stacks.
-   *
-   * Note that if topRadius is set to zero, then this routine will generate a
-   * cone.
-   *
-   * If the orientation is set to GLU.OUTSIDE (with glu.quadricOrientation), then
-   * any generated normals point away from the z axis. Otherwise, they point
-   * toward the z axis.
-   *
-   * If texturing is turned on (with glu.quadricTexture), then texture
-   * coordinates are generated so that t ranges linearly from 0.0 at z = 0 to
-   * 1.0 at z = height, and s ranges from 0.0 at the +y axis, to 0.25 at the +x
-   * axis, to 0.5 at the -y axis, to 0.75 at the -x axis, and back to 1.0 at the
-   * +y axis.
-   *
-   * @param baseRadius  Specifies the radius of the cylinder at z = 0.
-   * @param topRadius   Specifies the radius of the cylinder at z = height.
-   * @param height      Specifies the height of the cylinder.
-   * @param slices      Specifies the number of subdivisions around the z axis.
-   * @param stacks      Specifies the number of subdivisions along the z axis.
-   */
-  void drawCylinder(GL gl, float baseRadius, float topRadius, float height, int slices, int stacks) {
-
-    float da, r, dr, dz;
-    float x, y, z, nz, nsign;
-    int i, j;
-
-    if (orientation == GLU.GLU_INSIDE) {
-      nsign = -1.0f;
-    } else {
-      nsign = 1.0f;
-    }
-
-    da = 2.0f * PI / slices;
-    dr = (topRadius - baseRadius) / stacks;
-    dz = height / stacks;
-    nz = (baseRadius - topRadius) / height;
-    // Z component of normal vectors
-
-    if (drawStyle == GLU.GLU_POINT) {
-      gl.glBegin(GL.GL_POINTS);
-      for (i = 0; i < slices; i++) {
-        x = cos((i * da));
-        y = sin((i * da));
-        normal3f(gl, x * nsign, y * nsign, nz * nsign);
-
-        z = 0.0f;
-        r = baseRadius;
-        for (j = 0; j <= stacks; j++) {
-          gl.glVertex3f((x * r), (y * r), z);
-          z += dz;
-          r += dr;
-        }
-      }
-      gl.glEnd();
-    } else if (drawStyle == GLU.GLU_LINE || drawStyle == GLU.GLU_SILHOUETTE) {
-      // Draw rings
-      if (drawStyle == GLU.GLU_LINE) {
-        z = 0.0f;
-        r = baseRadius;
-        for (j = 0; j <= stacks; j++) {
-          gl.glBegin(GL.GL_LINE_LOOP);
-          for (i = 0; i < slices; i++) {
-            x = cos((i * da));
-            y = sin((i * da));
-            normal3f(gl, x * nsign, y * nsign, nz * nsign);
-            gl.glVertex3f((x * r), (y * r), z);
-          }
-          gl.glEnd();
-          z += dz;
-          r += dr;
-        }
-      } else {
-        // draw one ring at each end
-        if (baseRadius != 0.0) {
-          gl.glBegin(GL.GL_LINE_LOOP);
-          for (i = 0; i < slices; i++) {
-            x = cos((i * da));
-            y = sin((i * da));
-            normal3f(gl, x * nsign, y * nsign, nz * nsign);
-            gl.glVertex3f((x * baseRadius), (y * baseRadius), 0.0f);
-          }
-          gl.glEnd();
-          gl.glBegin(GL.GL_LINE_LOOP);
-          for (i = 0; i < slices; i++) {
-            x = cos((i * da));
-            y = sin((i * da));
-            normal3f(gl, x * nsign, y * nsign, nz * nsign);
-            gl.glVertex3f((x * topRadius), (y * topRadius), height);
-          }
-          gl.glEnd();
-        }
-      }
-      // draw length lines
-      gl.glBegin(GL.GL_LINES);
-      for (i = 0; i < slices; i++) {
-        x = cos((i * da));
-        y = sin((i * da));
-        normal3f(gl, x * nsign, y * nsign, nz * nsign);
-        gl.glVertex3f((x * baseRadius), (y * baseRadius), 0.0f);
-        gl.glVertex3f((x * topRadius), (y * topRadius), (height));
-      }
-      gl.glEnd();
-    } else if (drawStyle == GLU.GLU_FILL) {
-      float ds = 1.0f / slices;
-      float dt = 1.0f / stacks;
-      float t = 0.0f;
-      z = 0.0f;
-      r = baseRadius;
-      for (j = 0; j < stacks; j++) {
-        float s = 0.0f;
-        gl.glBegin(GL.GL_QUAD_STRIP);
-        for (i = 0; i <= slices; i++) {
-          if (i == slices) {
-            x = sin(0.0f);
-            y = cos(0.0f);
-          } else {
-            x = sin((i * da));
-            y = cos((i * da));
-          }
-          if (nsign == 1.0f) {
-            normal3f(gl, (x * nsign), (y * nsign), (nz * nsign));
-            TXTR_COORD(gl, s, t);
-            gl.glVertex3f((x * r), (y * r), z);
-            normal3f(gl, (x * nsign), (y * nsign), (nz * nsign));
-            TXTR_COORD(gl, s, t + dt);
-            gl.glVertex3f((x * (r + dr)), (y * (r + dr)), (z + dz));
-          } else {
-            normal3f(gl, x * nsign, y * nsign, nz * nsign);
-            TXTR_COORD(gl, s, t);
-            gl.glVertex3f((x * r), (y * r), z);
-            normal3f(gl, x * nsign, y * nsign, nz * nsign);
-            TXTR_COORD(gl, s, t + dt);
-            gl.glVertex3f((x * (r + dr)), (y * (r + dr)), (z + dz));
-          }
-          s += ds;
-        } // for slices
-        gl.glEnd();
-        r += dr;
-        t += dt;
-        z += dz;
-      } // for stacks
-    }
-  }
-
-  /**
-   * renders a disk on the z = 0  plane.  The disk has a radius of
-   * outerRadius, and contains a concentric circular hole with a radius of
-   * innerRadius. If innerRadius is 0, then no hole is generated. The disk is
-   * subdivided around the z axis into slices (like pizza slices), and also
-   * about the z axis into rings (as specified by slices and loops,
-   * respectively).
-   *
-   * With respect to orientation, the +z side of the disk is considered to be
-   * "outside" (see glu.quadricOrientation).  This means that if the orientation
-   * is set to GLU.OUTSIDE, then any normals generated point along the +z axis.
-   * Otherwise, they point along the -z axis.
-   *
-   * If texturing is turned on (with glu.quadricTexture), texture coordinates are
-   * generated linearly such that where r=outerRadius, the value at (r, 0, 0) is
-   * (1, 0.5), at (0, r, 0) it is (0.5, 1), at (-r, 0, 0) it is (0, 0.5), and at
-   * (0, -r, 0) it is (0.5, 0).
-   */
-  public void drawDisk(GL gl, float innerRadius, float outerRadius, int slices, int loops)
-  {
-    float da, dr;
-
-    /* Normal vectors */
-    if (normals != GLU.GLU_NONE) {
-      if (orientation == GLU.GLU_OUTSIDE) {
-        gl.glNormal3f(0.0f, 0.0f, +1.0f);
-      }
-      else {
-        gl.glNormal3f(0.0f, 0.0f, -1.0f);
-      }
-    }
-	
-    da = 2.0f * PI / slices;
-    dr = (outerRadius - innerRadius) /  loops;
-	
-    switch (drawStyle) {
-    case GLU.GLU_FILL:
-      {
-        /* texture of a gluDisk is a cut out of the texture unit square
-         * x, y in [-outerRadius, +outerRadius]; s, t in [0, 1]
-         * (linear mapping)
-         */
-        float dtc = 2.0f * outerRadius;
-        float sa, ca;
-        float r1 = innerRadius;
-        int l;
-        for (l = 0; l < loops; l++) {
-          float r2 = r1 + dr;
-          if (orientation == GLU.GLU_OUTSIDE) {
-            int s;
-            gl.glBegin(gl.GL_QUAD_STRIP);
-            for (s = 0; s <= slices; s++) {
-              float a;
-              if (s == slices)
-                a = 0.0f;
-              else
-                a = s * da;
-              sa = sin(a);
-              ca = cos(a);
-              TXTR_COORD(gl, 0.5f + sa * r2 / dtc, 0.5f + ca * r2 / dtc);
-              gl.glVertex2f(r2 * sa, r2 * ca);
-              TXTR_COORD(gl, 0.5f + sa * r1 / dtc, 0.5f + ca * r1 / dtc);
-              gl.glVertex2f(r1 * sa, r1 * ca);
-            }
-            gl.glEnd();
-          }
-          else {
-            int s;
-            gl.glBegin(GL.GL_QUAD_STRIP);
-            for (s = slices; s >= 0; s--) {
-              float a;
-              if (s == slices)
-                a = 0.0f;
-              else
-                a = s * da;
-              sa = sin(a);
-              ca = cos(a);
-              TXTR_COORD(gl, 0.5f - sa * r2 / dtc, 0.5f + ca * r2 / dtc);
-              gl.glVertex2f(r2 * sa, r2 * ca);
-              TXTR_COORD(gl, 0.5f - sa * r1 / dtc, 0.5f + ca * r1 / dtc);
-              gl.glVertex2f(r1 * sa, r1 * ca);
-            }
-            gl.glEnd();
-          }
-          r1 = r2;
-        }
-        break;
-      }
-    case GLU.GLU_LINE:
-      {
-        int l, s;
-        /* draw loops */
-        for (l = 0; l <= loops; l++) {
-          float r = innerRadius + l * dr;
-          gl.glBegin(GL.GL_LINE_LOOP);
-          for (s = 0; s < slices; s++) {
-            float a = s * da;
-            gl.glVertex2f(r * sin(a), r * cos(a));
-          }
-          gl.glEnd();
-        }
-        /* draw spokes */
-        for (s = 0; s < slices; s++) {
-          float a = s * da;
-          float x = sin(a);
-          float y = cos(a);
-          gl.glBegin(GL.GL_LINE_STRIP);
-          for (l = 0; l <= loops; l++) {
-            float r = innerRadius + l * dr;
-            gl.glVertex2f(r * x, r * y);
-          }
-          gl.glEnd();
-        }
-        break;
-      }
-    case GLU.GLU_POINT:
-      {
-        int s;
-        gl.glBegin(GL.GL_POINTS);
-        for (s = 0; s < slices; s++) {
-          float a = s * da;
-          float x = sin(a);
-          float y = cos(a);
-          int l;
-          for (l = 0; l <= loops; l++) {
-            float r = innerRadius * l * dr;
-            gl.glVertex2f(r * x, r * y);
-          }
-        }
-        gl.glEnd();
-        break;
-      }
-    case GLU.GLU_SILHOUETTE:
-      {
-        if (innerRadius != 0.0) {
-          float a;
-          gl.glBegin(GL.GL_LINE_LOOP);
-          for (a = 0.0f; a < 2.0 * PI; a += da) {
-            float x = innerRadius * sin(a);
-            float y = innerRadius * cos(a);
-            gl.glVertex2f(x, y);
-          }
-          gl.glEnd();
-        }
-        {
-          float a;
-          gl.glBegin(GL.GL_LINE_LOOP);
-          for (a = 0; a < 2.0f * PI; a += da) {
-            float x = outerRadius * sin(a);
-            float y = outerRadius * cos(a);
-            gl.glVertex2f(x, y);
-          }
-          gl.glEnd();
-        }
-        break;
-      }
-    default:
-      return;
-    }
-  }
-
-  /**
-   * renders a partial disk on the z=0 plane. A partial disk is similar to a
-   * full disk, except that only the subset of the disk from startAngle
-   * through startAngle + sweepAngle is included (where 0 degrees is along
-   * the +y axis, 90 degrees along the +x axis, 180 along the -y axis, and
-   * 270 along the -x axis).
-   * 
-   * The partial disk has a radius of outerRadius, and contains a concentric
-   * circular hole with a radius of innerRadius. If innerRadius is zero, then
-   * no hole is generated. The partial disk is subdivided around the z axis
-   * into slices (like pizza slices), and also about the z axis into rings
-   * (as specified by slices and loops, respectively).
-   * 
-   * With respect to orientation, the +z side of the partial disk is
-   * considered to be outside (see gluQuadricOrientation). This means that if
-   * the orientation is set to GLU.GLU_OUTSIDE, then any normals generated point
-   * along the +z axis. Otherwise, they point along the -z axis.
-   * 
-   * If texturing is turned on (with gluQuadricTexture), texture coordinates
-   * are generated linearly such that where r=outerRadius, the value at (r, 0, 0)
-   * is (1, 0.5), at (0, r, 0) it is (0.5, 1), at (-r, 0, 0) it is (0, 0.5),
-   * and at (0, -r, 0) it is (0.5, 0).
-   */
-  public void drawPartialDisk(GL gl,
-                              float innerRadius,
-                              float outerRadius,
-                              int slices,
-                              int loops,
-                              float startAngle,
-                              float sweepAngle) {
-    int i, j, max;
-    float[] sinCache = new float[CACHE_SIZE];
-    float[] cosCache = new float[CACHE_SIZE];
-    float angle;
-    float x, y;
-    float sintemp, costemp;
-    float deltaRadius;
-    float radiusLow, radiusHigh;
-    float texLow = 0, texHigh = 0;
-    float angleOffset;
-    int slices2;
-    int finish;
-
-    if (slices >= CACHE_SIZE)
-      slices = CACHE_SIZE - 1;
-    if (slices < 2
-        || loops < 1
-        || outerRadius <= 0.0f
-        || innerRadius < 0.0f
-        || innerRadius > outerRadius) {
-      //gluQuadricError(qobj, GLU.GLU_INVALID_VALUE);
-      System.err.println("PartialDisk: GLU_INVALID_VALUE");
-      return;
-    }
-
-    if (sweepAngle < -360.0f)
-      sweepAngle = 360.0f;
-    if (sweepAngle > 360.0f)
-      sweepAngle = 360.0f;
-    if (sweepAngle < 0) {
-      startAngle += sweepAngle;
-      sweepAngle = -sweepAngle;
-    }
-
-    if (sweepAngle == 360.0f) {
-      slices2 = slices;
-    } else {
-      slices2 = slices + 1;
-    }
-
-    /* Compute length (needed for normal calculations) */
-    deltaRadius = outerRadius - innerRadius;
-
-    /* Cache is the vertex locations cache */
-
-    angleOffset = startAngle / 180.0f * PI;
-    for (i = 0; i <= slices; i++) {
-      angle = angleOffset + ((PI * sweepAngle) / 180.0f) * i / slices;
-      sinCache[i] = sin(angle);
-      cosCache[i] = cos(angle);
-    }
-
-    if (sweepAngle == 360.0f) {
-      sinCache[slices] = sinCache[0];
-      cosCache[slices] = cosCache[0];
-    }
-
-    switch (normals) {
-    case GLU.GLU_FLAT :
-    case GLU.GLU_SMOOTH :
-      if (orientation == GLU.GLU_OUTSIDE) {
-        gl.glNormal3f(0.0f, 0.0f, 1.0f);
-      } else {
-        gl.glNormal3f(0.0f, 0.0f, -1.0f);
-      }
-      break;
-    default :
-    case GLU.GLU_NONE :
-      break;
-    }
-
-    switch (drawStyle) {
-    case GLU.GLU_FILL :
-      if (innerRadius == .0f) {
-        finish = loops - 1;
-        /* Triangle strip for inner polygons */
-        gl.glBegin(GL.GL_TRIANGLE_FAN);
-        if (textureFlag) {
-          gl.glTexCoord2f(0.5f, 0.5f);
-        }
-        gl.glVertex3f(0.0f, 0.0f, 0.0f);
-        radiusLow = outerRadius - deltaRadius * ((float) (loops - 1) / loops);
-        if (textureFlag) {
-          texLow = radiusLow / outerRadius / 2;
-        }
-
-        if (orientation == GLU.GLU_OUTSIDE) {
-          for (i = slices; i >= 0; i--) {
-            if (textureFlag) {
-              gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                              texLow * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusLow * sinCache[i], radiusLow * cosCache[i], 0.0f);
-          }
-        } else {
-          for (i = 0; i <= slices; i++) {
-            if (textureFlag) {
-              gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                              texLow * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusLow * sinCache[i], radiusLow * cosCache[i], 0.0f);
-          }
-        }
-        gl.glEnd();
-      } else {
-        finish = loops;
-      }
-      for (j = 0; j < finish; j++) {
-        radiusLow = outerRadius - deltaRadius * ((float) j / loops);
-        radiusHigh = outerRadius - deltaRadius * ((float) (j + 1) / loops);
-        if (textureFlag) {
-          texLow = radiusLow / outerRadius / 2;
-          texHigh = radiusHigh / outerRadius / 2;
-        }
-
-        gl.glBegin(GL.GL_QUAD_STRIP);
-        for (i = 0; i <= slices; i++) {
-          if (orientation == GLU.GLU_OUTSIDE) {
-            if (textureFlag) {
-              gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                              texLow * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusLow * sinCache[i], radiusLow * cosCache[i], 0.0f);
-
-            if (textureFlag) {
-              gl.glTexCoord2f(texHigh * sinCache[i] + 0.5f,
-                              texHigh * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusHigh * sinCache[i],
-                          radiusHigh * cosCache[i],
-                          0.0f);
-          } else {
-            if (textureFlag) {
-              gl.glTexCoord2f(texHigh * sinCache[i] + 0.5f,
-                              texHigh * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusHigh * sinCache[i],
-                          radiusHigh * cosCache[i],
-                          0.0f);
-
-            if (textureFlag) {
-              gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                              texLow * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusLow * sinCache[i], radiusLow * cosCache[i], 0.0f);
-          }
-        }
-        gl.glEnd();
-      }
-      break;
-    case GLU.GLU_POINT :
-      gl.glBegin(GL.GL_POINTS);
-      for (i = 0; i < slices2; i++) {
-        sintemp = sinCache[i];
-        costemp = cosCache[i];
-        for (j = 0; j <= loops; j++) {
-          radiusLow = outerRadius - deltaRadius * ((float) j / loops);
-
-          if (textureFlag) {
-            texLow = radiusLow / outerRadius / 2;
-
-            gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                            texLow * cosCache[i] + 0.5f);
-          }
-          gl.glVertex3f(radiusLow * sintemp, radiusLow * costemp, 0.0f);
-        }
-      }
-      gl.glEnd();
-      break;
-    case GLU.GLU_LINE :
-      if (innerRadius == outerRadius) {
-        gl.glBegin(GL.GL_LINE_STRIP);
-
-        for (i = 0; i <= slices; i++) {
-          if (textureFlag) {
-            gl.glTexCoord2f(sinCache[i] / 2 + 0.5f, cosCache[i] / 2 + 0.5f);
-          }
-          gl.glVertex3f(innerRadius * sinCache[i], innerRadius * cosCache[i], 0.0f);
-        }
-        gl.glEnd();
-        break;
-      }
-      for (j = 0; j <= loops; j++) {
-        radiusLow = outerRadius - deltaRadius * ((float) j / loops);
-        if (textureFlag) {
-          texLow = radiusLow / outerRadius / 2;
-        }
-
-        gl.glBegin(GL.GL_LINE_STRIP);
-        for (i = 0; i <= slices; i++) {
-          if (textureFlag) {
-            gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                            texLow * cosCache[i] + 0.5f);
-          }
-          gl.glVertex3f(radiusLow * sinCache[i], radiusLow * cosCache[i], 0.0f);
-        }
-        gl.glEnd();
-      }
-      for (i = 0; i < slices2; i++) {
-        sintemp = sinCache[i];
-        costemp = cosCache[i];
-        gl.glBegin(GL.GL_LINE_STRIP);
-        for (j = 0; j <= loops; j++) {
-          radiusLow = outerRadius - deltaRadius * ((float) j / loops);
-          if (textureFlag) {
-            texLow = radiusLow / outerRadius / 2;
-          }
-
-          if (textureFlag) {
-            gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                            texLow * cosCache[i] + 0.5f);
-          }
-          gl.glVertex3f(radiusLow * sintemp, radiusLow * costemp, 0.0f);
-        }
-        gl.glEnd();
-      }
-      break;
-    case GLU.GLU_SILHOUETTE :
-      if (sweepAngle < 360.0f) {
-        for (i = 0; i <= slices; i += slices) {
-          sintemp = sinCache[i];
-          costemp = cosCache[i];
-          gl.glBegin(GL.GL_LINE_STRIP);
-          for (j = 0; j <= loops; j++) {
-            radiusLow = outerRadius - deltaRadius * ((float) j / loops);
-
-            if (textureFlag) {
-              texLow = radiusLow / outerRadius / 2;
-              gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                              texLow * cosCache[i] + 0.5f);
-            }
-            gl.glVertex3f(radiusLow * sintemp, radiusLow * costemp, 0.0f);
-          }
-          gl.glEnd();
-        }
-      }
-      for (j = 0; j <= loops; j += loops) {
-        radiusLow = outerRadius - deltaRadius * ((float) j / loops);
-        if (textureFlag) {
-          texLow = radiusLow / outerRadius / 2;
-        }
-
-        gl.glBegin(GL.GL_LINE_STRIP);
-        for (i = 0; i <= slices; i++) {
-          if (textureFlag) {
-            gl.glTexCoord2f(texLow * sinCache[i] + 0.5f,
-                            texLow * cosCache[i] + 0.5f);
-          }
-          gl.glVertex3f(radiusLow * sinCache[i], radiusLow * cosCache[i], 0.0f);
-        }
-        gl.glEnd();
-        if (innerRadius == outerRadius)
-          break;
-      }
-      break;
-    default :
-      break;
-    }
-  }
-
-  /**
-   * draws a sphere of the given	radius centered	around the origin.
-   * The sphere is subdivided around the z axis into slices and along the z axis
-   * into stacks (similar to lines of longitude and latitude).
-   *
-   * If the orientation is set to GLU.OUTSIDE (with glu.quadricOrientation), then
-   * any normals generated point away from the center of the sphere. Otherwise,
-   * they point toward the center of the sphere.
-
-   * If texturing is turned on (with glu.quadricTexture), then texture
-   * coordinates are generated so that t ranges from 0.0 at z=-radius to 1.0 at
-   * z=radius (t increases linearly along longitudinal lines), and s ranges from
-   * 0.0 at the +y axis, to 0.25 at the +x axis, to 0.5 at the -y axis, to 0.75
-   * at the -x axis, and back to 1.0 at the +y axis.
-   */
-  public void drawSphere(GL gl, float radius, int slices, int stacks) {
-    // TODO
-
-    float rho, drho, theta, dtheta;
-    float x, y, z;
-    float s, t, ds, dt;
-    int i, j, imin, imax;
-    boolean normals;
-    float nsign;
-
-    normals = (this.normals != GLU.GLU_NONE);
-
-    if (orientation == GLU.GLU_INSIDE) {
-      nsign = -1.0f;
-    } else {
-      nsign = 1.0f;
-    }
-
-    drho = PI / stacks;
-    dtheta = 2.0f * PI / slices;
-
-    if (drawStyle == GLU.GLU_FILL) {
-      if (!textureFlag) {
-        // draw +Z end as a triangle fan
-        gl.glBegin(GL.GL_TRIANGLE_FAN);
-        gl.glNormal3f(0.0f, 0.0f, 1.0f);
-        gl.glVertex3f(0.0f, 0.0f, nsign * radius);
-        for (j = 0; j <= slices; j++) {
-          theta = (j == slices) ? 0.0f : j * dtheta;
-          x = -sin(theta) * sin(drho);
-          y = cos(theta) * sin(drho);
-          z = nsign * cos(drho);
-          if (normals) {
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          }
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-        }
-        gl.glEnd();
-      }
-
-      ds = 1.0f / slices;
-      dt = 1.0f / stacks;
-      t = 1.0f; // because loop now runs from 0
-      if (textureFlag) {
-        imin = 0;
-        imax = stacks;
-      } else {
-        imin = 1;
-        imax = stacks - 1;
-      }
-
-      // draw intermediate stacks as quad strips
-      for (i = imin; i < imax; i++) {
-        rho = i * drho;
-        gl.glBegin(GL.GL_QUAD_STRIP);
-        s = 0.0f;
-        for (j = 0; j <= slices; j++) {
-          theta = (j == slices) ? 0.0f : j * dtheta;
-          x = -sin(theta) * sin(rho);
-          y = cos(theta) * sin(rho);
-          z = nsign * cos(rho);
-          if (normals) {
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          }
-          TXTR_COORD(gl, s, t);
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-          x = -sin(theta) * sin(rho + drho);
-          y = cos(theta) * sin(rho + drho);
-          z = nsign * cos(rho + drho);
-          if (normals) {
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          }
-          TXTR_COORD(gl, s, t - dt);
-          s += ds;
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-        }
-        gl.glEnd();
-        t -= dt;
-      }
-
-      if (!textureFlag) {
-        // draw -Z end as a triangle fan
-        gl.glBegin(GL.GL_TRIANGLE_FAN);
-        gl.glNormal3f(0.0f, 0.0f, -1.0f);
-        gl.glVertex3f(0.0f, 0.0f, -radius * nsign);
-        rho = PI - drho;
-        s = 1.0f;
-        for (j = slices; j >= 0; j--) {
-          theta = (j == slices) ? 0.0f : j * dtheta;
-          x = -sin(theta) * sin(rho);
-          y = cos(theta) * sin(rho);
-          z = nsign * cos(rho);
-          if (normals)
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          s -= ds;
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-        }
-        gl.glEnd();
-      }
-    } else if (
-               drawStyle == GLU.GLU_LINE
-               || drawStyle == GLU.GLU_SILHOUETTE) {
-      // draw stack lines
-      for (i = 1;
-           i < stacks;
-           i++) { // stack line at i==stacks-1 was missing here
-        rho = i * drho;
-        gl.glBegin(GL.GL_LINE_LOOP);
-        for (j = 0; j < slices; j++) {
-          theta = j * dtheta;
-          x = cos(theta) * sin(rho);
-          y = sin(theta) * sin(rho);
-          z = cos(rho);
-          if (normals)
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-        }
-        gl.glEnd();
-      }
-      // draw slice lines
-      for (j = 0; j < slices; j++) {
-        theta = j * dtheta;
-        gl.glBegin(GL.GL_LINE_STRIP);
-        for (i = 0; i <= stacks; i++) {
-          rho = i * drho;
-          x = cos(theta) * sin(rho);
-          y = sin(theta) * sin(rho);
-          z = cos(rho);
-          if (normals)
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-        }
-        gl.glEnd();
-      }
-    } else if (drawStyle == GLU.GLU_POINT) {
-      // top and bottom-most points
-      gl.glBegin(GL.GL_POINTS);
-      if (normals)
-        gl.glNormal3f(0.0f, 0.0f, nsign);
-      gl.glVertex3f(0.0f, 0.0f, radius);
-      if (normals)
-        gl.glNormal3f(0.0f, 0.0f, -nsign);
-      gl.glVertex3f(0.0f, 0.0f, -radius);
-
-      // loop over stacks
-      for (i = 1; i < stacks - 1; i++) {
-        rho = i * drho;
-        for (j = 0; j < slices; j++) {
-          theta = j * dtheta;
-          x = cos(theta) * sin(rho);
-          y = sin(theta) * sin(rho);
-          z = cos(rho);
-          if (normals)
-            gl.glNormal3f(x * nsign, y * nsign, z * nsign);
-          gl.glVertex3f(x * radius, y * radius, z * radius);
-        }
-      }
-      gl.glEnd();
-    }
-  }
-
-
-  //----------------------------------------------------------------------
-  // Internals only below this point
-  //
-
-  private static final float PI = (float)Math.PI;
-  private static final int CACHE_SIZE = 240;
-
-  /**
-   * Call glNormal3f after scaling normal to unit length.
-   *
-   * @param x
-   * @param y
-   * @param z
-   */
-  private void normal3f(GL gl, float x, float y, float z) {
-    float mag;
-	
-    mag = (float)Math.sqrt(x * x + y * y + z * z);
-    if (mag > 0.00001F) {
-      x /= mag;
-      y /= mag;
-      z /= mag;
-    }
-    gl.glNormal3f(x, y, z);
-  }
-
-  private void TXTR_COORD(GL gl, float x, float y) {
-    if (textureFlag) gl.glTexCoord2f(x,y);
-  }
-
-  private float sin(float r) {
-    return (float)Math.sin(r);
-  }
-
-  private float cos(float r) {
-    return (float)Math.cos(r);
-  }
-}