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comparison engine/core/model/metamodel/grids/cellgrid.h @ 0:4a0efb7baf70

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* Datasets becomes the new trunk and retires after that :-)
author mvbarracuda@33b003aa-7bff-0310-803a-e67f0ece8222
date Sun, 29 Jun 2008 18:44:17 +0000
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children 112fc4af772d
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-1:000000000000 0:4a0efb7baf70
1 /***************************************************************************
2 * Copyright (C) 2005-2008 by the FIFE team *
3 * http://www.fifengine.de *
4 * This file is part of FIFE. *
5 * *
6 * FIFE is free software; you can redistribute it and/or modify *
7 * it under the terms of the GNU General Public License as published by *
8 * the Free Software Foundation; either version 2 of the License, or *
9 * (at your option) any later version. *
10 * *
11 * This program is distributed in the hope that it will be useful, *
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
14 * GNU General Public License for more details. *
15 * *
16 * You should have received a copy of the GNU General Public License *
17 * along with this program; if not, write to the *
18 * Free Software Foundation, Inc., *
19 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA *
20 ***************************************************************************/
21
22 #ifndef FIFE_MODEL_GRIDS_CELLGRID_H
23 #define FIFE_MODEL_GRIDS_CELLGRID_H
24
25 // Standard C++ library includes
26 #include <vector>
27
28 // 3rd party library includes
29
30 // FIFE includes
31 // These includes are split up in two parts, separated by one empty line
32 // First block: files included from the FIFE root src directory
33 // Second block: files included from the same folder
34 #include "model/metamodel/modelcoords.h"
35 #include "util/math/matrix.h"
36 #include "util/base/fifeclass.h"
37
38 namespace FIFE {
39 class CellGrid: public FifeClass {
40 public:
41 /** Constructor
42 * @param allow_diagonals if true, cellgrid allows diagonal access
43 */
44 CellGrid(bool allow_diagonals=false);
45
46 /** Destructor
47 */
48 virtual ~CellGrid();
49
50 /** Gets the coordinates that are accesible from given point
51 * only cells adjacent to given cell are considered in the evaluation
52 * @param curpos position (coordinates) to evaluate
53 * @param coordinate accessible coordinates
54 */
55 void getAccessibleCoordinates(const ModelCoordinate& curpos, std::vector<ModelCoordinate>& coordinates);
56
57 /** Type of cellgrid
58 */
59 virtual const std::string& getType() const = 0;
60
61 /** Name of the cellgrid (DEPRECATED? -jwt)
62 */
63 virtual const std::string& getName() const = 0;
64
65 /** Tells if given target point is accessible from curpos
66 * only cells adjacent to curpos are considered in the evaluation
67 * @param curpos position (coordinates) to evaluate
68 * @param target target coordinate to check
69 * @return true, if target is accessible from curpos, false otherwise
70 */
71 virtual bool isAccessible(const ModelCoordinate& curpos, const ModelCoordinate& target) = 0;
72
73 /** Returns *distance* const from curpos to target point
74 * only cells adjacent to curpos are considered in the evaluation
75 * @param curpos position (coordinates) to evaluate
76 * @param target target coordinate to check
77 * @return distance cost from curpos to target
78 */
79 virtual float getAdjacentCost(const ModelCoordinate& curpos, const ModelCoordinate& target) = 0;
80
81 /** Gets the count of sides for a single cell
82 * @return count of sides for a single cell
83 */
84 virtual unsigned int getCellSideCount() const = 0;
85
86 /** Transforms given point from layer coordinates to map coordinates
87 * @return point in map coordinates
88 */
89 ExactModelCoordinate toMapCoordinates(const ModelCoordinate& layer_coords);
90
91 /** Transforms given point from layer coordinates to map coordinates
92 * @return point in map coordinates
93 */
94 virtual ExactModelCoordinate toMapCoordinates(const ExactModelCoordinate& layer_coords) = 0;
95
96 /** Transforms given point from map coordinates to layer coordinates
97 * @return point in layer coordinates
98 */
99 virtual ModelCoordinate toLayerCoordinates(const ExactModelCoordinate& map_coord) = 0;
100
101 /** Transforms given point from map coordinates to layer coordinates
102 * @return point in layer coordinates
103 */
104 virtual ExactModelCoordinate toExactLayerCoordinates(const ExactModelCoordinate& map_coord) = 0;
105
106 /** Fills given point vector with vertices from selected cell
107 * @param vtx vertices for given cell
108 * @param cell cell to get vertices from
109 */
110 virtual void getVertices(std::vector<ExactModelCoordinate>& vtx, const ModelCoordinate& cell) = 0;
111
112 /** Set the cellgrid x shift
113 * @param shift The shift in map coords
114 */
115 void setXShift(const double& xshift) {
116 m_xshift = xshift;
117 updateMatrices();
118 }
119
120 /** Get the cellgrid x shift
121 * @return The x shift
122 */
123 const double getXShift() const { return m_xshift; }
124
125 /** Set the cellgrid y shift
126 * @param shift The shift in map coords
127 */
128 void setYShift(const double yshift) {
129 m_yshift = yshift;
130 updateMatrices();
131 }
132
133 /** Get the cellgrid x shift
134 * @return The x shift in map coords
135 */
136 const double getYShift() const { return m_yshift; }
137
138 /** Set the cellgrid x-scaling
139 * @param scale The x-scale of cellgrid
140 */
141 void setXScale(const double scale) {
142 m_xscale = scale;
143 updateMatrices();
144 }
145
146 /** Set the cellgrid y-scaling
147 * @param scale The y-scale of cellgrid
148 */
149 void setYScale(const double scale) {
150 m_yscale = scale;
151 updateMatrices();
152 }
153
154 /** Get the cellgrid x-scaling
155 * @return The x-scale of cellgrid
156 */
157 const double getXScale() const { return m_xscale; }
158
159 /** Get the cellgrid y-scaling
160 * @return The y-scale of cellgrid
161 */
162 const double getYScale() const { return m_yscale; }
163
164 /** Set the cellgrid rotation
165 * @param rotation The rotation of the cellgrid
166 */
167 void setRotation(const double rotation) {
168 m_rotation = rotation;
169 updateMatrices();
170 }
171
172 /** Get the cellgrid rotation
173 * @return rotation The rotation of the cellgrid
174 */
175 const double getRotation() const { return m_rotation; }
176
177 protected:
178 void updateMatrices();
179 bool ptInTriangle(const ExactModelCoordinate& pt, const ExactModelCoordinate& pt1, const ExactModelCoordinate& pt2, const ExactModelCoordinate& pt3);
180
181 DoubleMatrix m_matrix;
182 DoubleMatrix m_inverse_matrix;
183 double m_xshift;
184 double m_yshift;
185 double m_xscale;
186 double m_yscale;
187 double m_rotation;
188 bool m_allow_diagonals;
189
190 private:
191 int orientation(const ExactModelCoordinate& pt, const ExactModelCoordinate& pt1, const ExactModelCoordinate& pt2);
192 };
193 }
194
195 #endif