1 | #include <GL/glew.h> |
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2 | #include <GL/gl.h> |
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3 | #include "Grid.h" |
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4 | |
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5 | #define NUMDIGITS 6 |
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6 | #define GRID_TICK 0.05 |
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7 | |
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8 | Grid::Grid() : |
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9 | _axisColor(1.0f, 1.0f, 1.0f, 1.0f), |
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10 | _majorColor(1.0f, 1.0f, 1.0f, 1.0f), |
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11 | _minorColor(0.5f, 0.5f, 0.5f, 1.0f), |
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12 | _font(0), |
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13 | _visible(false), |
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14 | xAxis("X"), |
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15 | yAxis("Y"), |
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16 | zAxis("Z") |
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17 | { |
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18 | /*empty*/ |
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19 | } |
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20 | |
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21 | void Grid::render() |
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22 | { |
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23 | glPushMatrix(); |
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24 | glEnable(GL_DEPTH_TEST); |
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25 | glDisable(GL_TEXTURE_2D); |
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26 | glEnable(GL_BLEND); |
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27 | |
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28 | #ifdef notdef |
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29 | glEnable(GL_LINE_SMOOTH); |
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30 | #endif |
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31 | #ifdef notdef |
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32 | glScalef(xAxis.Scale(), |
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33 | yAxis.Range() / xAxis.Range(), |
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34 | zAxis.Range() / xAxis.Range()); |
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35 | #endif |
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36 | glScalef(1.0, 1.0, 1.0); |
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37 | |
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38 | glTranslatef(-0.5f, -0.5f, -0.5f); |
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39 | glLineWidth(2.0f); |
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40 | glColor4f(_axisColor.red, _axisColor.green, _axisColor.blue, |
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41 | _axisColor.alpha); |
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42 | |
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43 | glBegin(GL_LINES); |
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44 | { |
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45 | glVertex3f(0.0f, 0.0f, 0.0f); |
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46 | glVertex3f(1.0f + GRID_TICK, 0.0f, 0.0f); |
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47 | glVertex3f(0.0f, 0.0f, 0.0f); |
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48 | glVertex3f(0.0f, 1.0f + GRID_TICK, 0.0f); |
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49 | glVertex3f(0.0f, 0.0f, 0.0f); |
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50 | glVertex3f(0.0f, 0.0f, 1.0f + GRID_TICK); |
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51 | } |
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52 | glEnd(); |
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53 | |
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54 | glLineWidth(1.0f); |
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55 | glColor4f(_majorColor.red, _majorColor.green, _majorColor.blue, |
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56 | _majorColor.alpha); |
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57 | |
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58 | glBegin(GL_LINES); |
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59 | { |
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60 | bool result; |
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61 | TickIter iter; |
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62 | |
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63 | for (result = xAxis.FirstMajor(iter); result; result = iter.Next()) { |
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64 | float x; |
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65 | x = xAxis.Map(iter.GetValue()); |
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66 | glVertex3f(x, 0.0f, 0.0f); |
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67 | glVertex3f(x, 1.0f, 0.0f); |
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68 | glVertex3f(x, 0.0f, 0.0f); |
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69 | glVertex3f(x, 0.0f, 1.0f + GRID_TICK); |
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70 | } |
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71 | for (result = yAxis.FirstMajor(iter); result; result = iter.Next()) { |
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72 | float y; |
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73 | y = yAxis.Map(iter.GetValue()); |
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74 | glVertex3f(0.0f, y, 0.0f); |
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75 | glVertex3f(1.0f + GRID_TICK, y, 0.0f); |
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76 | glVertex3f(0.0f, y, 0.0f); |
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77 | glVertex3f(0.0f, y, 1.0f); |
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78 | } |
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79 | for (result = zAxis.FirstMajor(iter); result; result = iter.Next()) { |
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80 | float z; |
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81 | z = zAxis.Map(iter.GetValue()); |
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82 | glVertex3f(0.0f, 0.0f, z); |
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83 | glVertex3f(0.0f, 1.0f, z); |
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84 | glVertex3f(0.0f, 0.0f, z); |
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85 | glVertex3f(1.0f + GRID_TICK, 0.0f, z); |
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86 | } |
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87 | } |
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88 | glEnd(); |
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89 | |
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90 | // Set minor line color |
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91 | glColor4f(_minorColor.red, _minorColor.green, _minorColor.blue, |
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92 | _minorColor.alpha); |
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93 | |
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94 | glBegin(GL_LINES); |
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95 | { |
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96 | bool result; |
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97 | TickIter iter; |
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98 | |
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99 | for (result = xAxis.FirstMinor(iter); result; result = iter.Next()) { |
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100 | float x; |
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101 | x = xAxis.Map(iter.GetValue()); |
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102 | glVertex3f(x, 0.0f, 0.0f); |
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103 | glVertex3f(x, 1.0f, 0.0f); |
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104 | glVertex3f(x, 0.0f, 0.0f); |
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105 | glVertex3f(x, 0.0f, 1.0f); |
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106 | } |
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107 | for (result = yAxis.FirstMinor(iter); result; result = iter.Next()) { |
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108 | float y; |
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109 | y = yAxis.Map(iter.GetValue()); |
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110 | glVertex3f(0.0f, y, 0.0f); |
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111 | glVertex3f(1.0f, y, 0.0f); |
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112 | glVertex3f(0.0f, y, 0.0f); |
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113 | glVertex3f(0.0f, y, 1.0f); |
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114 | } |
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115 | for (result = zAxis.FirstMinor(iter); result; result = iter.Next()) { |
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116 | float z; |
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117 | z = zAxis.Map(iter.GetValue()); |
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118 | glVertex3f(0.0f, 0.0f, z); |
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119 | glVertex3f(0.0f, 1.0f, z); |
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120 | glVertex3f(0.0f, 0.0f, z); |
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121 | glVertex3f(1.0f, 0.0f, z); |
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122 | } |
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123 | } |
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124 | glEnd(); |
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125 | |
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126 | if (_font != NULL) { |
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127 | double mv[16], prjm[16]; |
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128 | int viewport[4]; |
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129 | double wx, wy, wz; |
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130 | bool result; |
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131 | TickIter iter; |
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132 | |
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133 | glGetDoublev(GL_MODELVIEW_MATRIX, mv); |
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134 | glGetDoublev(GL_PROJECTION_MATRIX, prjm); |
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135 | glGetIntegerv(GL_VIEWPORT, viewport); |
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136 | |
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137 | _font->begin(); |
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138 | if (gluProject(1.2, 0.0, 0.0, mv, prjm, viewport, &wx, &wy, &wz)) { |
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139 | glLoadIdentity(); |
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140 | glTranslatef((int) wx, viewport[3] - (int) wy, 0); |
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141 | _font->draw(xAxis.GetName()); |
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142 | } |
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143 | |
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144 | if (gluProject(0.0, 1.2, 0.0, mv, prjm, viewport, &wx, &wy, &wz)) { |
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145 | glLoadIdentity(); |
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146 | glTranslatef((int) wx, viewport[3] - (int)wy, 0); |
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147 | _font->draw(yAxis.GetName()); |
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148 | } |
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149 | |
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150 | if (gluProject(0.0, 0.0, 1.2, mv, prjm, viewport, &wx, &wy, &wz)) { |
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151 | glLoadIdentity(); |
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152 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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153 | _font->draw(zAxis.GetName()); |
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154 | } |
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155 | |
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156 | glColor4f(1.0f, 1.0f, 0.0f, 1.0f); |
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157 | |
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158 | for (result = xAxis.FirstMajor(iter); result; result = iter.Next()) { |
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159 | float x; |
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160 | x = xAxis.Map(iter.GetValue()); |
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161 | if (gluProject(x, 0.0f, 1.06f, mv, prjm, viewport, &wx, &wy, &wz)) { |
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162 | char buff[20]; |
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163 | glLoadIdentity(); |
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164 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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165 | sprintf(buff, "%.*g", NUMDIGITS, iter.GetValue()); |
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166 | _font->draw(buff); |
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167 | } |
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168 | } |
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169 | for (result = yAxis.FirstMajor(iter); result; result = iter.Next()) { |
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170 | float y; |
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171 | y = yAxis.Map(iter.GetValue()); |
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172 | if (gluProject(1.06f, y, 0.0f, mv, prjm, viewport, &wx, &wy, &wz)) { |
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173 | char buff[20]; |
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174 | glLoadIdentity(); |
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175 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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176 | sprintf(buff, "%.*g", NUMDIGITS, iter.GetValue()); |
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177 | _font->draw(buff); |
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178 | } |
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179 | } |
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180 | for (result = zAxis.FirstMajor(iter); result; result = iter.Next()) { |
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181 | float z; |
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182 | z = zAxis.Map(iter.GetValue()); |
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183 | if (gluProject(1.06f, 0.0f, z, mv, prjm, viewport, &wx, &wy, &wz)) { |
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184 | char buff[20]; |
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185 | glLoadIdentity(); |
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186 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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187 | sprintf(buff, "%.*g", NUMDIGITS, iter.GetValue()); |
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188 | _font->draw(buff); |
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189 | } |
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190 | } |
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191 | _font->end(); |
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192 | }; |
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193 | glPopMatrix(); |
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194 | glDisable(GL_DEPTH_TEST); |
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195 | glDisable(GL_BLEND); |
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196 | #ifdef notdef |
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197 | glDisable(GL_LINE_SMOOTH); |
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198 | #endif |
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199 | } |
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200 | |
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201 | void Grid::setFont(R2Fonts* font) |
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202 | { |
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203 | // if (font == _font) return; |
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204 | // if (font) font->addRef(); |
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205 | // if (_font) _font->unrefDelete(); |
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206 | |
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207 | _font = font; |
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208 | } |
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209 | |
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