Integration of Tomas Hrasky's port of basic GLU NURBS functionality

from C++ to Java, plus example applications, done as part of his
Bachelor of Science degree at the University of Hradec Králové,
Faculty of Informatics and Management.

Current state of code is documented in
src/classes/com/sun/opengl/impl/nurbs/README.txt.

Example applications require Java 1.5 and are not currently built by
default. Specify -Djogl.nurbs=1 during jogl-demos build with a 1.5
javac on the PATH to build them. Dependent jars are copied to build
output directory.

Deleted old partially-complete GLU NURBS port.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@1389 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 258 insertions, 0 deletions

diff --git a/src/classes/com/sun/opengl/impl/nurbs/Arc.java b/src/classes/com/sun/opengl/impl/nurbs/Arc.java
new file mode 100755
index 000000000..717edbb33
--- /dev/null
+++ b/src/classes/com/sun/opengl/impl/nurbs/Arc.java
@@ -0,0 +1,258 @@
+package com.sun.opengl.impl.nurbs;
+
+/*
+** 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.
+*/
+
+/**
+ * Trimming arc
+ * @author Tomas Hrasky
+ *
+ */
+class Arc {
+  /**
+   * Corresponding picewise-linear arc
+   */
+  public PwlArc pwlArc;
+
+  /**
+   * Arc type
+   */
+  private long type;
+
+  /**
+   * Arc link in linked list
+   */
+  public Arc link;
+
+  /**
+   * Previous arc
+   */
+  Arc prev;
+
+  /**
+   * Next arc
+   */
+  Arc next;
+
+  /**
+   * Corresponding berizer type arc
+   */
+  private BezierArc bezierArc;
+
+  /**
+   * Makes new arc at specified side
+   * 
+   * @param side
+   *            which side doeas this arc form
+   */
+  public Arc(int side) {
+    bezierArc = null;
+    pwlArc = null;
+    type = 0;
+    setside(side);
+    // nuid=_nuid
+  }
+
+  /**
+   * Sets side the arc is at
+   * 
+   * @param side
+   *            arc side
+   */
+  private void setside(int side) {
+    // DONE
+    clearside();
+    type |= side << 8;
+  }
+
+  /**
+   * Unsets side
+   */
+  private void clearside() {
+    // DONE
+    type &= ~(0x7 << 8);
+  }
+
+  // this one replaces enum arc_side 
+  /**
+   * Side not specified
+   */
+  public static final int ARC_NONE = 0;
+
+  /**
+   * Arc on right
+   */
+  public static final int ARC_RIGHT = 1;
+
+  /**
+   * Arc on top
+   */
+  public static final int ARC_TOP = 2;
+
+  /**
+   * Arc on left
+   */
+  public static final int ARC_LEFT = 3;
+
+  /**
+   * Arc on bottom
+   */
+  public static final int ARC_BOTTOM = 4;
+
+  /**
+   * Bezier type flag
+   */
+  private static final long BEZIER_TAG = 1 << 13;
+
+  /**
+   * Arc type flag
+   */
+  private static final long ARC_TAG = 1 << 3;
+
+  /**
+   * Tail type tag
+   */
+  private static final long TAIL_TAG = 1 << 6;
+
+  /**
+   * Appends arc to the list
+   * 
+   * @param jarc
+   *            arc to be append
+   * @return this
+   */
+  public Arc append(Arc jarc) {
+    // DONE
+    if (jarc != null) {
+      next = jarc.next;
+      prev = jarc;
+      next.prev = this;
+      prev.next = this;
+    } else {
+      next = this;
+      prev = this;
+    }
+
+    return this;
+  }
+
+  /**
+   * Unused
+   * 
+   * @return true
+   */
+  public boolean check() {
+    return true;
+  }
+
+  /**
+   * Sets bezier type flag
+   */
+  public void setbezier() {
+    // DONE
+    type |= BEZIER_TAG;
+
+  }
+
+  /**
+   * Returns tail of linked list coords
+   * 
+   * @return tail coords
+   */
+  public float[] tail() {
+    // DONE
+    return pwlArc.pts[0].param;
+  }
+
+  /**
+   * Returns head of linked list coords
+   * 
+   * @return head coords
+   */
+  public float[] head() {
+    // DONE
+    return next.pwlArc.pts[0].param;
+  }
+
+  /**
+   * Returns whether arc is marked with arc_tag
+   * 
+   * @return is arc marked with arc_tag
+   */
+  public boolean ismarked() {
+    // DONE
+    return ((type & ARC_TAG) > 0) ? true : false;
+  }
+
+  /**
+   * Cleans arc_tag flag
+   */
+  public void clearmark() {
+    // DONE
+    type &= (~ARC_TAG);
+  }
+
+  /**
+   * Sets arc_tag flag
+   */
+  public void setmark() {
+    // DONE
+    type |= ARC_TAG;
+  }
+
+  /**
+   * sets tail tag
+   */
+  public void setitail() {
+    // DONE
+    type |= TAIL_TAG;
+  }
+
+  /**
+   * Returns whether arc is marked tail
+   * 
+   * @return is tail
+   */
+  public boolean getitail() {
+    return false;
+  }
+
+  /**
+   * Unsets tail tag
+   */
+  public void clearitail() {
+    // DONE
+    type &= (~TAIL_TAG);
+  }
+}