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annotate engine/core/util/structures/rect.h @ 629:e37469251b22

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* Removed some more unused files
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Mon, 04 Oct 2010 20:52:06 +0000
parents c0c3f64bfc2d
children
rev   line source
0
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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 * *
46
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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. *
0
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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 *
46
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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. *
0
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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 *
0
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
0
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20 ***************************************************************************/
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21
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22 /***************************************************************************
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23
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24 Rectangle intersection code copied and modified from the guichan 0.4
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25 source, which is released under the BSD license.
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26
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27 Copyright (c) 2004, 2005, 2006 Olof Naessén and Per Larsson All rights reserved.
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28
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29 * Redistribution and use in source and binary forms, with or without modification,
622
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30 are permitted provided that the following conditions are met:
0
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31 Redistributions of source code must retain the above copyright notice,
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32 this list of conditions and the following disclaimer.
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33
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34 * Redistributions in binary form must reproduce the above copyright notice,
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35 this list of conditions and the following disclaimer in the documentation
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36 and/or other materials provided with the distribution.
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37
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38 * Neither the name of the Guichan nor the names of its contributors may be used
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39 to endorse or promote products derived from this software without specific
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40 prior written permission.
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41
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42 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS
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43 OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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44 AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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45 CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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46 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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47 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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48 AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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49 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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50 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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51
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52 For more Information about guichan see: http://guichan.sourceforge.net
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53
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54 ****************************************************************************/
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55
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56 #ifndef FIFE_VIDEO_RECT_H
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57 #define FIFE_VIDEO_RECT_H
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58
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59 // Standard C++ library includes
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60 #include <iostream>
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61
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62 // 3rd party library includes
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63
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64 // FIFE includes
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65 // These includes are split up in two parts, separated by one empty line
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66 // First block: files included from the FIFE root src directory
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67 // Second block: files included from the same folder
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68 #include "point.h"
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69
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70 namespace FIFE {
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71
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72 /** A Rectangle on screen.
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73 *
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74 * This is a small helper class used for screen coordinate arithmetics.
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75 * The same thoughts reasong using @b int as value type as in Point apply.
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76 *
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77 * @see Point
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78 */
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79 template <typename T>
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80 class RectType {
0
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81 public:
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82 /** The X Coordinate.
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83 */
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84 T x;
0
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85 /** The Y Coordinate.
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86 */
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87 T y;
0
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88 /** Width of the rectangle.
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89 */
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90 T w;
0
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91 /** Height of the rectangle.
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92 */
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93 T h;
0
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94
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95 /** Constructor.
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96 *
0
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97 * Creates a new Rect with the values defaulting to 0.
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98 */
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99 explicit RectType(T x = 0, T y = 0, T w = 0, T h = 0) : x(x), y(y), w(w), h(h) {
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100 }
0
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101
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102 /** The X coordinate of the right edge.
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103 */
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104 T right() const;
0
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105
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106 /** The Y coordinate of the bottom edge.
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107 */
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108 T bottom() const;
0
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diff changeset
109
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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110 /** Equivalence operator.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
111 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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112 * @param rect The rectangle to which this is compared.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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113 * @return True only if both rectangle values are all equal.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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114 */
622
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diff changeset
115 bool operator==(const RectType<T>& rect ) const;
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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116
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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117 /** Checks whether a rectangle contains a Point.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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118 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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119 * @param p The point that is checked.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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120 * @return True if the point lies inside the rectangle or on one of its borders.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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121 */
622
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diff changeset
122 bool contains( const PointType2D<T>& point ) const;
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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123
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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124 /** Check whether two rectangles share some area.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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125 *
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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126 * @param rect The other rectangle that is checked.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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127 * @return True, if and only if both rectangles have some covered area in common.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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128 * This includes edges that cover each other.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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129 * @note This operation is commutative.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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130 */
622
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131 bool intersects( const RectType<T>& rect ) const;
0
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132
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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133 /** Calculate rectangle intersection in place
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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134 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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135 * @param rect The other rectangle that is checked.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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136 * @return True, if and only if both rectangles have some covered area in common.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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137 * This includes edges that cover each other.
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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138 */
622
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139 bool intersectInplace( const RectType<T>& rect );
0
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140
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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141 };
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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142
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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143 /** Stream output operator.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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144 *
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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145 * Useful for debugging purposes, this will output the coordinates
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
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146 * of the rectangle to the stream.
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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147 */
622
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148 template<typename T>
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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149 std::ostream& operator<<(std::ostream& os, const RectType<T>& r) {
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
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150 return
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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151 os << "("<<r.x<<","<<r.y<<")-("<<r.w<<","<<r.h<<")";
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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152 }
0
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153
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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154 //////////////// INLINE FUNCTIONS /////////////////////////
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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155
622
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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156 template<typename T>
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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157 inline T RectType<T>::right() const {
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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158 return x + w;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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159 }
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160
622
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161 template<typename T>
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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162 inline T RectType<T>::bottom() const {
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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163 return y + h;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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164 }
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165
622
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166 template<typename T>
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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167 inline bool RectType<T>::operator==(const RectType<T>& rect ) const {
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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168 return
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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169 x == rect.x && y == rect.y && w == rect.w && h == rect.h;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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170 }
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171
622
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172 template<typename T>
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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173 inline bool RectType<T>::contains( const PointType2D<T>& point ) const {
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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174 return
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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175 (((point.x >= x) && (point.x <= x + w))
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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176 && ((point.y >= y) && (point.y <= y + h)));
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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177 }
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178
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179
622
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180 template<typename T>
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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181 inline bool RectType<T>::intersectInplace( const RectType<T>& rectangle ) {
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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182 x = x - rectangle.x;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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183 y = y - rectangle.y;
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184
622
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185
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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186 if (x < 0) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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187 w += x;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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188 x = 0;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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189 }
622
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190
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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191 if (y < 0) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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192 h += y;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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193 y = 0;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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194 }
622
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195
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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196 if (x + w > rectangle.w) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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197 w = rectangle.w - x;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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198 }
622
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199
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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200 if (y + h > rectangle.h) {
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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201 h = rectangle.h - y;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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202 }
622
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203
0
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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204 x += rectangle.x;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
205 y += rectangle.y;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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206
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
parents:
diff changeset
207 if (w <= 0 || h <= 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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208 h = 0;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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209 w = 0;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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210 return false;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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211 }
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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212 return true;
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mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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213 }
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214
622
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
215 template<typename T>
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prock@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
216 inline bool RectType<T>::intersects( const RectType<T>& rectangle ) const {
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diff changeset
217 T _x = x - rectangle.x;
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diff changeset
218 T _y = y - rectangle.y;
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diff changeset
219 T _w = w;
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diff changeset
220 T _h = h;
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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221
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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222
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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223 if (_x < 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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224 _w += _x;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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225 _x = 0;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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226 }
622
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
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227
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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228 if (_y < 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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229 _h += _y;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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230 _y = 0;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
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231 }
622
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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232
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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233 if (_x + _w > rectangle.w) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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234 _w = rectangle.w - _x;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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235 }
622
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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236
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
237 if (_y + _h > rectangle.h) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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238 _h = rectangle.h - _y;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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239 }
622
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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240
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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241 if (_w <= 0 || _h <= 0) {
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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242 return false;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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243 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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244 return true;
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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245 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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246
622
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
247 typedef RectType<int> Rect;
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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248 typedef RectType<float> FloatRect;
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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249 typedef RectType<double> DoubleRect;
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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250
c0c3f64bfc2d * Templatized Rect to extend it's functionality beyond integers
prock@33b003aa-7bff-0310-803a-e67f0ece8222
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diff changeset
251
0
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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252 }
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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253
4a0efb7baf70 * Datasets becomes the new trunk and retires after that :-)
mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
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254 #endif