GLU tesselator port by Pepijn Van Eeckhoudt and Nathan Parker Burg.

git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/trunk@57 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 130 insertions, 0 deletions

diff --git a/src/net/java/games/jogl/impl/tesselator/Dict.java b/src/net/java/games/jogl/impl/tesselator/Dict.java
new file mode 100644
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+++ b/src/net/java/games/jogl/impl/tesselator/Dict.java
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+/*
+* Portions Copyright (C) 2003 Sun Microsystems, Inc.
+* All rights reserved.
+*/
+
+/*
+** 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.
+**
+** Author: Eric Veach, July 1994
+** Java Port: Pepijn Van Eeckhoudt, July 2003
+** Java Port: Nathan Parker Burg, August 2003
+*/
+package net.java.games.jogl.impl.tesselator;
+
+class Dict {
+    DictNode head;
+    Object frame;
+    DictLeq leq;
+
+    private Dict() {
+    }
+
+    static Dict dictNewDict(Object frame, DictLeq leq) {
+        Dict dict = new Dict();
+        dict.head = new DictNode();
+
+        dict.head.key = null;
+        dict.head.next = dict.head;
+        dict.head.prev = dict.head;
+
+        dict.frame = frame;
+        dict.leq = leq;
+
+        return dict;
+    }
+
+    static void dictDeleteDict(Dict dict) {
+        dict.head = null;
+        dict.frame = null;
+        dict.leq = null;
+    }
+
+    static DictNode dictInsert(Dict dict, Object key) {
+        return dictInsertBefore(dict, dict.head, key);
+    }
+
+    static DictNode dictInsertBefore(Dict dict, DictNode node, Object key) {
+        do {
+            node = node.prev;
+        } while (node.key != null && !dict.leq.leq(dict.frame, node.key, key));
+
+        DictNode newNode = new DictNode();
+        newNode.key = key;
+        newNode.next = node.next;
+        node.next.prev = newNode;
+        newNode.prev = node;
+        node.next = newNode;
+
+        return newNode;
+    }
+
+    static Object dictKey(DictNode aNode) {
+        return aNode.key;
+    }
+
+    static DictNode dictSucc(DictNode aNode) {
+        return aNode.next;
+    }
+
+    static DictNode dictPred(DictNode aNode) {
+        return aNode.prev;
+    }
+
+    static DictNode dictMin(Dict aDict) {
+        return aDict.head.next;
+    }
+
+    static DictNode dictMax(Dict aDict) {
+        return aDict.head.prev;
+    }
+
+    static void dictDelete(Dict dict, DictNode node) {
+        node.next.prev = node.prev;
+        node.prev.next = node.next;
+    }
+
+    static DictNode dictSearch(Dict dict, Object key) {
+        DictNode node = dict.head;
+
+        do {
+            node = node.next;
+        } while (node.key != null && !(dict.leq.leq(dict.frame, key, node.key)));
+
+        return node;
+    }
+
+    public interface DictLeq {
+        boolean leq(Object frame, Object key1, Object key2);
+    }
+}