1 | #ifndef _HEIGHT_MAP_H_ |
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2 | #define _HEIGHT_MAP_H_ |
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3 | |
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4 | #include <Cg/cgGL.h> |
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5 | #include <Cg/cg.h> |
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6 | #include <R2/graphics/R2Geometry.h> |
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7 | #include "TransferFunction.h" |
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8 | #include "NvShader.h" |
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9 | #include "Vector3.h" |
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10 | |
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11 | /** |
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12 | *@class HeightMap |
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13 | *@brief Create a surface from height map and line contour of the generated surface |
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14 | */ |
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15 | class HeightMap { |
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16 | unsigned int _vertexBufferObjectID; |
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17 | unsigned int _textureBufferObjectID; |
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18 | |
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19 | int _vertexCount; |
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20 | CGparameter _tf; |
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21 | R2Geometry* _contour; |
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22 | TransferFunction* _colorMap; |
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23 | NvShader* _shader; |
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24 | int* _indexBuffer; |
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25 | int _indexCount; |
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26 | Vector3 _contourColor; |
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27 | |
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28 | bool _contourVisible; |
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29 | bool _visible; |
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30 | |
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31 | Vector3 _scale; |
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32 | |
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33 | public : |
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34 | /** |
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35 | *@brief Constructor |
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36 | */ |
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37 | HeightMap(); |
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38 | /** |
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39 | *@brief Destructor |
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40 | */ |
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41 | ~HeightMap(); |
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42 | |
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43 | private : |
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44 | void createIndexBuffer(int xCount, int zCount, int*& indexBuffer, int& indexCount, float* heights); |
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45 | Vector3* createHeightVertices(float startX, float startY, float endX, float endY, int xCount, int yCount, float* height); |
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46 | void reset(); |
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47 | public : |
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48 | void render(); |
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49 | /** |
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50 | *@brief Create a height map with heigh values |
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51 | *@param startX a x position of the first height value |
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52 | *@param startY a y position of the first height value |
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53 | *@param endX a x position of the last height value |
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54 | *@param endY a y position of the last height value |
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55 | *@param xCount the number of columns of height values |
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56 | *@param yCount the number of rows of height values |
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57 | *@param height a pointer value adrressing xCount * yCount values of heights |
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58 | */ |
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59 | void setHeight(float startX, float startY, float endX, float endY, int xCount, int yCount, float* height); |
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60 | |
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61 | /** |
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62 | *@brief Create a height map with a set of points |
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63 | *@param xCount the number of columns of height values |
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64 | *@param yCount the number of rows of height values |
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65 | */ |
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66 | void setHeight(int xCount, int yCount, Vector3* heights); |
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67 | |
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68 | /** |
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69 | *@brief Define a color map for color shading of heighmap |
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70 | */ |
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71 | void setColorMap(TransferFunction* colorMap); |
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72 | |
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73 | /** |
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74 | *@brief Set the visibility of the height map |
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75 | */ |
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76 | void setVisible(bool visible); |
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77 | |
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78 | /** |
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79 | *@brief Return the status of the visibility |
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80 | */ |
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81 | bool isVisible() const; |
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82 | |
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83 | /** |
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84 | *@brief Set the visibility of the line contour |
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85 | */ |
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86 | void setLineContourVisible(bool visible); |
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87 | |
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88 | /** |
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89 | *@brief Defind the color of the line contour |
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90 | */ |
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91 | void setLineContourColor(float r, float g, float b); |
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92 | }; |
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93 | |
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94 | inline void HeightMap::setVisible(bool visible) |
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95 | { |
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96 | _visible = visible; |
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97 | } |
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98 | |
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99 | inline bool HeightMap::isVisible() const |
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100 | { |
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101 | return _visible; |
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102 | } |
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103 | |
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104 | inline void HeightMap::setLineContourVisible(bool visible) |
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105 | { |
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106 | _contourVisible = visible; |
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107 | } |
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108 | |
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109 | inline void HeightMap::setLineContourColor(float r, float g, float b) |
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110 | { |
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111 | _contourColor.x = r; |
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112 | _contourColor.y = g; |
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113 | _contourColor.z = b; |
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114 | } |
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115 | #endif |
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