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 | double _vmin; // minimum (unscaled) value in data |
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34 | double _vmax; // maximum (unscaled) value in data |
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35 | |
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36 | |
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37 | public : |
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38 | /** |
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39 | *@brief Constructor |
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40 | */ |
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41 | HeightMap(); |
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42 | /** |
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43 | *@brief Destructor |
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44 | */ |
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45 | ~HeightMap(); |
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46 | |
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47 | private : |
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48 | void createIndexBuffer(int xCount, int zCount, int*& indexBuffer, int& indexCount, float* heights); |
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49 | Vector3* createHeightVertices(float startX, float startY, float endX, float endY, int xCount, int yCount, float* height); |
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50 | void reset(); |
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51 | public : |
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52 | void render(); |
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53 | /** |
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54 | *@brief Create a height map with heigh values |
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55 | *@param startX a x position of the first height value |
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56 | *@param startY a y position of the first height value |
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57 | *@param endX a x position of the last height value |
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58 | *@param endY a y position of the last height value |
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59 | *@param xCount the number of columns of height values |
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60 | *@param yCount the number of rows of height values |
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61 | *@param height a pointer value adrressing xCount * yCount values of heights |
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62 | */ |
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63 | void setHeight(float startX, float startY, float endX, float endY, int xCount, int yCount, float* height); |
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64 | |
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65 | /** |
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66 | *@brief Create a height map with a set of points |
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67 | *@param xCount the number of columns of height values |
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68 | *@param yCount the number of rows of height values |
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69 | */ |
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70 | void setHeight(int xCount, int yCount, Vector3* heights); |
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71 | |
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72 | /** |
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73 | *@brief Define a color map for color shading of heightmap |
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74 | */ |
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75 | void setColorMap(TransferFunction* colorMap); |
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76 | |
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77 | /** |
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78 | *@brief Get the color map defined for shading of this heightmap |
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79 | */ |
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80 | TransferFunction *getColorMap(void); |
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81 | |
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82 | /** |
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83 | *@brief Set the visibility of the height map |
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84 | */ |
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85 | void setVisible(bool visible); |
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86 | |
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87 | /** |
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88 | *@brief Return the status of the visibility |
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89 | */ |
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90 | bool isVisible() const; |
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91 | |
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92 | /** |
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93 | *@brief Set the visibility of the line contour |
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94 | */ |
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95 | void setLineContourVisible(bool visible); |
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96 | |
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97 | /** |
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98 | *@brief Defind the color of the line contour |
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99 | */ |
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100 | void setLineContourColor(float r, float g, float b); |
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101 | |
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102 | double range_min(void); |
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103 | double range_max(void); |
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104 | }; |
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105 | |
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106 | inline void HeightMap::setVisible(bool visible) |
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107 | { |
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108 | _visible = visible; |
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109 | } |
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110 | |
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111 | inline bool HeightMap::isVisible() const |
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112 | { |
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113 | return _visible; |
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114 | } |
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115 | |
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116 | inline void HeightMap::setLineContourVisible(bool visible) |
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117 | { |
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118 | _contourVisible = visible; |
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119 | } |
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120 | |
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121 | inline void HeightMap::setLineContourColor(float r, float g, float b) |
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122 | { |
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123 | _contourColor.x = r; |
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124 | _contourColor.y = g; |
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125 | _contourColor.z = b; |
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126 | } |
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127 | |
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128 | inline TransferFunction * |
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129 | HeightMap::getColorMap() |
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130 | { |
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131 | return _colorMap; |
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132 | } |
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133 | |
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134 | inline double |
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135 | HeightMap::range_min() |
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136 | { |
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137 | return _vmin; |
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138 | } |
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139 | |
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140 | inline double |
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141 | HeightMap::range_max() |
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142 | { |
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143 | return _vmax; |
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144 | } |
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145 | #endif |
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