Import libtess.js

2013-09-03 11:23:27 +02:00
parent 221a56a411
commit 31f3e92494
21 changed files with 6420 additions and 0 deletions
@@ -0,0 +1,165 @@
+/**
+ * Copyright 2000, Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright 2012, Google Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * 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.
+ */
+
+/**
+ * @author Eric Veach, July 1994
+ * @author Brendan Kenny
+ */
+
+// require libtess
+/*global libtess */
+
+// TODO(bckenny): better typing for DictKey? actually libtess.ActiveRegion
+/** @typedef {Object} */
+libtess.dictKey;
+
+// TODO(bckenny): better typing for all of this, really. no need not to eg use tess as frame directly
+
+/**
+ * [Dict description]
+ *
+ * @constructor
+ * @param {Object} frame [description]
+ * @param {function(Object, Object, Object): boolean} leq [description]
+ */
+libtess.Dict = function(frame, leq) {
+  /**
+   * [head description]
+   * @type {libtess.DictNode}
+   */
+  this.head = new libtess.DictNode();
+  this.head.next = this.head;
+  this.head.prev = this.head;
+
+  // TODO(bckenny): better typing? see above
+  /**
+   * [frame description]
+   * @type {Object}
+   */
+  this.frame = frame;
+
+  /**
+   * [leq_ description]
+   * @private
+   * @type {function(Object, libtess.dictKey, libtess.dictKey): boolean}
+   */
+  this.leq_ = /** @type {function(Object, libtess.dictKey, libtess.dictKey): boolean} */(leq);
+};
+
+/**
+ * [deleteDict description]
+ */
+libtess.Dict.prototype.deleteDict = function() {
+  // TODO(bckenny): unnecessary, I think.
+  // for (var node = libtess.head.next; node !== libtess.head; node = node.next) {
+    // memFree(node);
+  // }
+  // memFree(dict);
+  
+  // NOTE(bckenny): nulled at callsite (sweep.doneEdgeDict_)
+};
+
+/**
+ * [insertBefore description]
+ * @param {libtess.DictNode} node [description]
+ * @param {Object} key [description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.Dict.prototype.insertBefore = function(node, key) {
+  do {
+    node = node.prev;
+  } while(node.key !== null && !this.leq_(this.frame, node.key, key));
+
+  var newNode = new libtess.DictNode();
+
+  newNode.key = key;
+  newNode.next = node.next;
+  node.next.prev = newNode;
+  newNode.prev = node;
+  node.next = newNode;
+
+  return newNode;
+};
+
+/**
+ * [insert description]
+ * @param {Object} key [description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.Dict.prototype.insert = function(key) {
+  // NOTE(bckenny): from a macro in dict.h/dict-list.h
+  return this.insertBefore(this.head, key);
+};
+
+/**
+ * [deleteNode description]
+ * @param {libtess.DictNode} node [description]
+ */
+libtess.Dict.prototype.deleteNode = function(node) {
+  // NOTE(bckenny): nulled at callsite (sweep.deleteRegion_)
+  node.next.prev = node.prev;
+  node.prev.next = node.next;
+  // memFree( node ); TODO(bckenny)
+};
+
+/**
+ * Search returns the node with the smallest key greater than or equal
+ * to the given key. If there is no such key, returns a node whose
+ * key is null. Similarly, max(d).getSucc() has a null key, etc.
+ *
+ * @param {Object} key [description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.Dict.prototype.search = function(key) {
+  var node = this.head;
+
+  do {
+    node = node.next;
+  } while(node.key !== null && !this.leq_(this.frame, key, node.key));
+
+  return node;
+};
+
+/**
+ * [getMin description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.Dict.prototype.getMin = function() {
+  // NOTE(bckenny): from a macro in dict.h/dict-list.h
+  return this.head.next;
+};
+
+/**
+ * [getMax description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.Dict.prototype.getMax = function() {
+  // NOTE(bckenny): from a macro in dict.h/dict-list.h
+  return this.head.prev;
+};
@@ -0,0 +1,90 @@
+/**
+ * Copyright 2000, Silicon Graphics, Inc. All Rights Reserved.
+ * Copyright 2012, Google Inc. All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice including the dates of first publication and
+ * either this permission notice or a reference to http://oss.sgi.com/projects/FreeB/
+ * shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * 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.
+ */
+
+/**
+ * @author Eric Veach, July 1994
+ * @author Brendan Kenny
+ */
+
+// require libtess
+// require libtess.Dict
+/*global libtess */
+
+// TODO(bckenny): better typing for DictKey?
+
+/**
+ * [DictNode description]
+ * @constructor
+ */
+libtess.DictNode = function() {
+  // TODO(bckenny): could probably move all three properties to opt params
+  /**
+   * [key description]
+   * @type {libtess.dictKey}
+   */
+  this.key = null;
+
+  /**
+   * [next description]
+   * @type {libtess.DictNode}
+   */
+  this.next = null;
+  
+  /**
+   * [prev description]
+   * @type {libtess.DictNode}
+   */
+  this.prev = null;
+};
+
+/**
+ * [getKey description]
+ * @return {libtess.dictKey} [description]
+ */
+libtess.DictNode.prototype.getKey = function() {
+  return this.key;
+};
+
+/**
+ * [getSucc description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.DictNode.prototype.getSucc = function() {
+  // TODO(bckenny): unabreviated naming?
+  return this.next;
+};
+
+/**
+ * [getPred description]
+ * @return {libtess.DictNode} [description]
+ */
+libtess.DictNode.prototype.getPred = function() {
+  // TODO(bckenny): unabreviated naming?
+  return this.prev;
+};