annotate engine/core/util/structures/quadtree.h @ 697:ecaa4d98f05f tip

Abstracted the GUI code and refactored the GUIChan-specific code into its own module. * Most of the GUIChan code has been refactored into its own gui/guichan module. However, references to the GuiFont class still persist in the Engine and GuiManager code and these will need further refactoring. * GuiManager is now an abstract base class which specific implementations (e.g. GUIChan) should subclass. * The GUIChan GUI code is now a concrete implementation of GuiManager, most of which is in the new GuiChanGuiManager class. * The GUI code in the Console class has been refactored out of the Console and into the GUIChan module as its own GuiChanConsoleWidget class. The rest of the Console class related to executing commands was left largely unchanged. * Existing client code may need to downcast the GuiManager pointer received from FIFE::Engine::getGuiManager() to GuiChanGuiManager, since not all functionality is represented in the GuiManager abstract base class. Python client code can use the new GuiChanGuiManager.castTo static method for this purpose.
author M. George Hansen <technopolitica@gmail.com>
date Sat, 18 Jun 2011 00:28:40 -1000
parents 90005975cdbb
children
rev   line source
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_UTIL_QUADTREE_H
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23 #define FIFE_UTIL_QUADTREE_H
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24
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25 // Standard C++ library includes
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26 #include <cassert>
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27
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28 // 3rd party library includes
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29
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30 // FIFE includes
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31 // These includes are split up in two parts, separated by one empty line
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32 // First block: files included from the FIFE root src directory
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33 // Second block: files included from the same folder
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34 #include "rect.h"
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35
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36 namespace FIFE {
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37
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38 /** QuadTree Node
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39 */
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40 template<typename DataType, int MinimumSize = 128>
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41 class QuadNode {
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42 protected:
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43 QuadNode *m_parent;
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44 QuadNode *m_nodes[4];
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45 int m_x,m_y,m_size;
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46 DataType m_data;
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47
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48 public:
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49 /** Create a new QuadNode
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50 * @param parent The parent QuadNode this node is contained in or null.
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51 * @param x The X position of this QuadNode.
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52 * @param y The Y position of this QuadNode.
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53 * @param size The width and height of this QuadNode.
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54 */
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55 QuadNode(QuadNode* parent, int x, int y, int size)
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56 : m_parent(parent),m_x(x),m_y(y),m_size(size),m_data() {
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57 m_nodes[0] = m_nodes[1] = m_nodes[2] = m_nodes[3] = 0L;
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58 }
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59
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60 ~QuadNode() {
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61 delete m_nodes[0];
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62 delete m_nodes[1];
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63 delete m_nodes[2];
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64 delete m_nodes[3];
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65 }
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66
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67 /** Find a container node for a given rectangle.
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68 * This guarantees to return a Node with the following
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69 * properties:
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70 * 1.) The node contains the rectangle (as defined by the contains
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71 * function). 2.) All subnodes can not contain the rectangle or it has the MinimumSize.
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72 * 3.) In case these properties can only be fulfilled by extending the tree upwards,
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73 * that is by creating a new root node - this function will return null.
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74 *
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75 * This function will extend the tree automatically so that this guarantee
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76 * can be fulfilled.
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77 */
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78 QuadNode* find_container(int x, int y, int w, int h);
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79 QuadNode* find_container(const Rect& rect) {
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80 return find_container(rect.x,rect.y,rect.w,rect.h);
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81 }
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82
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83 /** Apply a visitor recursively to the QuadTree
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84 * A visitor is an object which has a @c visit method which
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85 * takes as parameters a pointer to a @c QuadNode and an integer.
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86 * The integer is the depth of the given node.
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87 * If the method returns @c true it is applied recursivly to all
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88 * existing subnodes with a depth increased by one.
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89 * The application happens in Z order (top left, top right, bottom
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90 * left and finally bottom right).
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91 */
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92 template<typename Visitor>
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93 void apply_visitor(Visitor& visitor, int d = 0) {
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94 if( !visitor.visit(this, d) )
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95 return;
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96 if( m_nodes[0] ) m_nodes[0]->apply_visitor(visitor, d + 1);
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97 if( m_nodes[1] ) m_nodes[1]->apply_visitor(visitor, d + 1);
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98 if( m_nodes[2] ) m_nodes[2]->apply_visitor(visitor, d + 1);
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99 if( m_nodes[3] ) m_nodes[3]->apply_visitor(visitor, d + 1);
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100 }
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101
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102 /** Return the X position of the node.
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103 */
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104 int x() const { return m_x; };
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105
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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106 /** Return the Y position of the node.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
107 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
108 int y() const { return m_y; };
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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109
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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110 /** Return the size (width and height) of the node.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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111 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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112 int size() const { return m_size; };
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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113
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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114 /** Return a reference to the data of the node.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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115 */
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116 DataType& data() { return m_data; };
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117
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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118 /** Check whether a rectangle is contained in the node.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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119 * A rectangle is contained in a node, iff:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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120 * @code
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121 * x >= x() and x + w < x() + size() and y >= y() and y + h < y() + size()
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122 * @endcode
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123 * That is the top and left borders are inclusive, but the right and bottom
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124 * borders are exclusive.
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125 */
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126 bool contains(int x, int y, int w, int h) const;
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127
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128 /// Expand the subnodes - only needed for debugging/profiling worst cases.
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129 void splice();
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130
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131 /** Return the parent node
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132 */
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133 QuadNode* parent() { return m_parent; };
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134
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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135 /** Create a new parent node for a rectangle
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136 * This will create a new parent node end expand the tree so that
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137 * the given rectangle will eventually be contained after enough calls
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138 * of this function.
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139 */
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140 QuadNode* create_parent(int x, int y, int w, int h);
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141 protected:
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142 int subnode(int x, int y, int w, int h) const;
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143 };
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144
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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145 /** Dynamic QuadTree
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146 * A space partitioning tree automatically expanding to adjust
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147 * to any object size put into the data structure.
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148 */
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149 template<typename DataType, int MinimumSize = 128>
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
150 class QuadTree {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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151 public:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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152 typedef QuadNode<DataType,MinimumSize> Node;
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153
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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154 /** Create a new QuadTree
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155 * @param x The X position of the starting node.
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156 * @param y The Y position of the starting node.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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157 * @param starting_size The width and height of the starting node.
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158 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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159 QuadTree(int x = 0, int y = 0, int starting_size = MinimumSize) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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160 assert(starting_size>1);
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161 m_cursor = m_root = new Node(0L,x,y,starting_size);
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162 }
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163
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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164 ~QuadTree() {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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165 assert( m_root->parent() == 0 );
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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166 delete m_root;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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167 }
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168
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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169 /** Find a container node for a given rectangle.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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170 * This guarantees to return a Node with the following
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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171 * properties:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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172 * 1.) The node contains the rectangle (as defined by the contains
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
173 * function). 2.) All subnodes can not contain the rectangle or it has the MinimumSize.
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174 * This function will extend the tree automatically so that this guarantee
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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175 * can be fulfilled.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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176 * This function is optimized for sequential access. This means accessing different rectangles
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177 * that are 'near' to each other will be fast.
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178 * @warning If you put different sized objects in (for example) lists in the quadnode,
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179 * the returned node will @b not contain all objects which might intersect with the given
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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180 * rectangle.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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181 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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182 Node* find_container(int x, int y, int w, int h);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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183 Node* find_container(const Rect& rect) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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184 return find_container(rect.x,rect.y,rect.w,rect.h);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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185 }
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186
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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187 /** Apply a visitor recursively to the QuadTree
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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188 */
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
189 template<typename Visitor>
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
190 Visitor& apply_visitor(Visitor& visitor) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
191 m_root->apply_visitor(visitor,0);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
192 return visitor;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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193 }
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194
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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195 void clear() {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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196 int x = m_root->x();
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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197 int y = m_root->y();
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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198 int s = m_root->size();
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
199 delete m_root;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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200 m_cursor = m_root = new Node(0L,x,y,s);
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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201 }
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202
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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203 protected:
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
204 Node *m_root;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
205 Node *m_cursor;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
206 };
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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207
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208
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
209 template<typename DataType, int MinimumSize>
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
210 inline
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
211 bool QuadNode<DataType,MinimumSize>::contains(int x, int y, int w, int h) const {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
212 if (x < m_x)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
213 return false;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
214 if (y < m_y)
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
215 return false;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
216 if (x + w >= m_x + m_size)
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
217 return false;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
218 if (y + h >= m_y + m_size)
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
219 return false;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
220 return true;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
221 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
222
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
223 template<typename DataType, int MinimumSize>
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
224 inline
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
225 int QuadNode<DataType,MinimumSize>::subnode(int x, int y, int w, int h) const {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
226 /*
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
227 Very small performance impact - roughly 5% for
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
228 the already very fast find_container function.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
229 */
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
230 //assert(contains(x,y,w,h));
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
231
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
232 if (x >= m_x + m_size/2) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
233 if (y >= m_y + m_size/2) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
234 return 3;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
235 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
236 if (y + h < m_y + m_size/2) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
237 return 1;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
238 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
239 return -1;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
240 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
241 if (x + w < m_x + m_size/2) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
242 if (y >= m_y + m_size/2) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
243 return 2;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
244 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
245 if (y + h < m_y + m_size/2) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
246 return 0;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
247 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
248 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
249 return -1;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
250 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
251
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
252 template<typename DataType,int MinimumSize>
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
253 QuadNode<DataType,MinimumSize>*
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
254 QuadNode<DataType,MinimumSize>::find_container(int x, int y, int w, int h) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
255 if( !contains(x,y,w,h) ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
256 if (m_parent) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
257 return m_parent->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
258 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
259 return 0L;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
260 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
261
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
262 if (m_size <= MinimumSize) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
263 return this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
264 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
265
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
266 int r = subnode(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
267 switch(r) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
268 case -1:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
269 return this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
270 case 0:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
271 if( m_nodes[0] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
272 m_nodes[0] = new QuadNode<DataType,MinimumSize>(this,m_x,m_y,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
273 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
274 return m_nodes[0]->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
275 case 1:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
276 if( m_nodes[1] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
277 m_nodes[1] = new QuadNode<DataType,MinimumSize>(this,m_x + m_size/2,m_y,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
278 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
279 return m_nodes[1]->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
280 case 2:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
281 if( m_nodes[2] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
282 m_nodes[2] = new QuadNode<DataType,MinimumSize>(this,m_x,m_y + m_size/2,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
283 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
284 return m_nodes[2]->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
285 case 3:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
286 if( m_nodes[3] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
287 m_nodes[3] = new QuadNode<DataType,MinimumSize>(this,m_x + m_size/2,m_y + m_size/2,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
288 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
289 return m_nodes[3]->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
290 default:
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
291 assert("BUG in QuadTree !" == 0);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
292 return 0L;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
293 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
294 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
295
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
296 template<typename DataType,int MinimumSize>
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
297 QuadNode<DataType,MinimumSize>*
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
298 QuadNode<DataType,MinimumSize>::create_parent(int x, int y, int w, int h) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
299 /*
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
300 If used only by the tree, these two are superfluous.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
301 */
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
302 if( contains(x,y,w,h) )
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
303 return this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
304 if( m_parent )
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
305 return m_parent;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
306
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
307 if (x >= m_x) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
308 if (y >= m_y) { // we are node 0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
309 m_parent = new QuadNode(0L,m_x,m_y,m_size*2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
310 m_parent->m_nodes[0] = this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
311 return m_parent;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
312 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
313 if (y + w < m_y + m_size) { // we are node 2
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
314 m_parent = new QuadNode(0L,m_x,m_y - m_size,m_size*2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
315 m_parent->m_nodes[2] = this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
316 return m_parent;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
317 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
318 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
319 if (x + h < m_x + m_size) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
320 if (y >= m_y) { // we are node 1
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
321 m_parent = new QuadNode(0L,m_x-m_size,m_y,m_size*2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
322 m_parent->m_nodes[1] = this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
323 return m_parent;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
324 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
325 if (y + w < m_y + m_size) { // we are node 3
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
326 m_parent = new QuadNode(0L,m_x-m_size,m_y - m_size,m_size*2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
327 m_parent->m_nodes[3] = this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
328 return m_parent;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
329 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
330 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
331
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
332 // It does not matter....
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
333 m_parent = new QuadNode(0L,m_x,m_y,m_size*2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
334 m_parent->m_nodes[0] = this;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
335 return m_parent;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
336 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
337
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
338 template<typename DataType,int MinimumSize>
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
339 void QuadNode<DataType,MinimumSize>::splice() {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
340 if (m_size <= MinimumSize)
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
341 return;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
342
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
343 if( m_nodes[0] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
344 m_nodes[0] = new QuadNode<DataType,MinimumSize>(this,m_x,m_y,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
345 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
346 if( m_nodes[1] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
347 m_nodes[1] = new QuadNode<DataType,MinimumSize>(this,m_x + m_size/2,m_y,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
348 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
349 if( m_nodes[2] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
350 m_nodes[2] = new QuadNode<DataType,MinimumSize>(this,m_x,m_y + m_size/2,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
351 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
352 if( m_nodes[3] == 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
353 m_nodes[3] = new QuadNode<DataType,MinimumSize>(this,m_x + m_size/2,m_y + m_size/2,m_size/2);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
354 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
355 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
356
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
357 template<typename DataType,int MinimumSize>
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
358 QuadNode<DataType,MinimumSize>*
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
359 QuadTree<DataType,MinimumSize>::find_container(int x, int y, int w, int h) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
360 m_cursor = m_cursor->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
361 while( m_cursor == 0L ) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
362 m_root = m_root->create_parent(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
363 m_cursor = m_root->find_container(x,y,w,h);
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
364 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
365 return m_cursor;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
366 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
367
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
368
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
369 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
370
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
371 #endif // QUADTREE_H