1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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4 | * |
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5 | */ |
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6 | #include <stdlib.h> |
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7 | #include <stdio.h> |
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8 | |
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9 | #include <GL/glew.h> |
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10 | #include <GL/gl.h> |
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11 | |
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12 | #include <util/Fonts.h> |
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13 | #include <vrmath/Color4f.h> |
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14 | |
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15 | #include "Grid.h" |
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16 | #include "Trace.h" |
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17 | |
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18 | using namespace nv; |
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19 | using namespace nv::util; |
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20 | |
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21 | #define NUMDIGITS 6 |
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22 | #define GRID_TICK 0.05 |
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23 | |
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24 | Grid::Grid() : |
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25 | xAxis("X"), |
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26 | yAxis("Y"), |
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27 | zAxis("Z"), |
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28 | _axisColor(1.0f, 1.0f, 1.0f, 1.0f), |
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29 | _majorColor(1.0f, 1.0f, 1.0f, 1.0f), |
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30 | _minorColor(0.5f, 0.5f, 0.5f, 1.0f), |
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31 | _font(NULL), |
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32 | _visible(false) |
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33 | { |
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34 | } |
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35 | |
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36 | Grid::~Grid() |
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37 | { |
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38 | } |
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39 | |
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40 | void Grid::getBounds(vrmath::Vector3f& bboxMin, vrmath::Vector3f& bboxMax) const |
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41 | { |
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42 | bboxMin.set(xAxis.min(), yAxis.min(), zAxis.min()); |
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43 | bboxMax.set(xAxis.min() + xAxis.range(), |
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44 | yAxis.min() + yAxis.range(), |
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45 | zAxis.min() + zAxis.range()); |
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46 | } |
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47 | |
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48 | void Grid::render() |
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49 | { |
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50 | if (!isVisible()) |
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51 | return; |
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52 | |
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53 | glPushAttrib(GL_ENABLE_BIT); |
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54 | |
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55 | glEnable(GL_DEPTH_TEST); |
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56 | glDisable(GL_TEXTURE_2D); |
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57 | glEnable(GL_BLEND); |
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58 | #ifdef notdef |
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59 | glEnable(GL_LINE_SMOOTH); |
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60 | #endif |
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61 | |
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62 | glMatrixMode(GL_MODELVIEW); |
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63 | glPushMatrix(); |
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64 | |
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65 | glTranslatef(xAxis.min(), yAxis.min(), zAxis.min()); |
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66 | glScalef(xAxis.range(), yAxis.range(), zAxis.range()); |
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67 | |
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68 | glLineWidth(2.0f); |
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69 | glColor4f(_axisColor.r, _axisColor.g, _axisColor.b, |
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70 | _axisColor.a); |
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71 | |
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72 | glBegin(GL_LINES); |
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73 | { |
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74 | glVertex3f(0.0f, 0.0f, 0.0f); |
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75 | glVertex3f(1.0f + GRID_TICK, 0.0f, 0.0f); |
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76 | glVertex3f(0.0f, 0.0f, 0.0f); |
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77 | glVertex3f(0.0f, 1.0f + GRID_TICK, 0.0f); |
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78 | glVertex3f(0.0f, 0.0f, 0.0f); |
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79 | glVertex3f(0.0f, 0.0f, 1.0f + GRID_TICK); |
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80 | } |
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81 | glEnd(); |
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82 | |
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83 | glLineWidth(1.0f); |
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84 | glColor4f(_majorColor.r, _majorColor.g, _majorColor.b, |
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85 | _majorColor.a); |
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86 | |
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87 | glBegin(GL_LINES); |
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88 | { |
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89 | bool result; |
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90 | TickIter iter; |
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91 | |
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92 | for (result = xAxis.firstMajor(iter); result; result = iter.next()) { |
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93 | float x; |
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94 | x = xAxis.map(iter.getValue()); |
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95 | glVertex3f(x, 0.0f, 0.0f); |
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96 | glVertex3f(x, 1.0f, 0.0f); |
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97 | glVertex3f(x, 0.0f, 0.0f); |
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98 | glVertex3f(x, 0.0f, 1.0f + GRID_TICK); |
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99 | } |
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100 | for (result = yAxis.firstMajor(iter); result; result = iter.next()) { |
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101 | float y; |
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102 | y = yAxis.map(iter.getValue()); |
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103 | glVertex3f(0.0f, y, 0.0f); |
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104 | glVertex3f(1.0f + GRID_TICK, y, 0.0f); |
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105 | glVertex3f(0.0f, y, 0.0f); |
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106 | glVertex3f(0.0f, y, 1.0f); |
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107 | } |
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108 | for (result = zAxis.firstMajor(iter); result; result = iter.next()) { |
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109 | float z; |
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110 | z = zAxis.map(iter.getValue()); |
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111 | glVertex3f(0.0f, 0.0f, z); |
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112 | glVertex3f(0.0f, 1.0f, z); |
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113 | glVertex3f(0.0f, 0.0f, z); |
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114 | glVertex3f(1.0f + GRID_TICK, 0.0f, z); |
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115 | } |
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116 | } |
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117 | glEnd(); |
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118 | |
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119 | // Set minor line color |
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120 | glColor4f(_minorColor.r, _minorColor.g, _minorColor.b, |
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121 | _minorColor.a); |
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122 | |
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123 | glBegin(GL_LINES); |
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124 | { |
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125 | bool result; |
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126 | TickIter iter; |
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127 | |
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128 | for (result = xAxis.firstMinor(iter); result; result = iter.next()) { |
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129 | float x; |
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130 | x = xAxis.map(iter.getValue()); |
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131 | glVertex3f(x, 0.0f, 0.0f); |
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132 | glVertex3f(x, 1.0f, 0.0f); |
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133 | glVertex3f(x, 0.0f, 0.0f); |
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134 | glVertex3f(x, 0.0f, 1.0f); |
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135 | } |
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136 | for (result = yAxis.firstMinor(iter); result; result = iter.next()) { |
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137 | float y; |
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138 | y = yAxis.map(iter.getValue()); |
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139 | glVertex3f(0.0f, y, 0.0f); |
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140 | glVertex3f(1.0f, y, 0.0f); |
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141 | glVertex3f(0.0f, y, 0.0f); |
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142 | glVertex3f(0.0f, y, 1.0f); |
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143 | } |
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144 | for (result = zAxis.firstMinor(iter); result; result = iter.next()) { |
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145 | float z; |
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146 | z = zAxis.map(iter.getValue()); |
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147 | glVertex3f(0.0f, 0.0f, z); |
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148 | glVertex3f(0.0f, 1.0f, z); |
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149 | glVertex3f(0.0f, 0.0f, z); |
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150 | glVertex3f(1.0f, 0.0f, z); |
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151 | } |
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152 | } |
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153 | glEnd(); |
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154 | |
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155 | if (_font != NULL) { |
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156 | double mv[16], prjm[16]; |
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157 | int viewport[4]; |
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158 | double wx, wy, wz; |
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159 | bool result; |
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160 | TickIter iter; |
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161 | |
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162 | glGetDoublev(GL_MODELVIEW_MATRIX, mv); |
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163 | glGetDoublev(GL_PROJECTION_MATRIX, prjm); |
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164 | glGetIntegerv(GL_VIEWPORT, viewport); |
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165 | |
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166 | _font->begin(); |
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167 | if (gluProject(1.2, 0.0, 0.0, mv, prjm, viewport, &wx, &wy, &wz)) { |
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168 | glLoadIdentity(); |
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169 | glTranslatef((int) wx, viewport[3] - (int) wy, 0); |
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170 | const char *name = xAxis.name(); |
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171 | if (name == NULL) { |
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172 | name = "???"; |
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173 | } |
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174 | _font->draw(name); |
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175 | } |
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176 | |
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177 | if (gluProject(0.0, 1.2, 0.0, mv, prjm, viewport, &wx, &wy, &wz)) { |
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178 | glLoadIdentity(); |
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179 | glTranslatef((int) wx, viewport[3] - (int)wy, 0); |
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180 | const char *name = yAxis.name(); |
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181 | if (name == NULL) { |
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182 | name = "???"; |
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183 | } |
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184 | _font->draw(name); |
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185 | } |
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186 | |
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187 | if (gluProject(0.0, 0.0, 1.2, mv, prjm, viewport, &wx, &wy, &wz)) { |
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188 | glLoadIdentity(); |
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189 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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190 | const char *name = zAxis.name(); |
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191 | if (name == NULL) { |
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192 | name = "???"; |
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193 | } |
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194 | _font->draw(name); |
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195 | } |
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196 | |
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197 | glColor4f(1.0f, 1.0f, 0.0f, 1.0f); |
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198 | |
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199 | for (result = xAxis.firstMajor(iter); result; result = iter.next()) { |
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200 | float x; |
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201 | x = xAxis.map(iter.getValue()); |
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202 | if (gluProject(x, 0.0f, 1.06f, mv, prjm, viewport, &wx, &wy, &wz)) { |
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203 | char buff[20]; |
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204 | glLoadIdentity(); |
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205 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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206 | sprintf(buff, "%.*g", NUMDIGITS, iter.getValue()); |
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207 | _font->draw(buff); |
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208 | } |
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209 | } |
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210 | for (result = yAxis.firstMajor(iter); result; result = iter.next()) { |
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211 | float y; |
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212 | y = yAxis.map(iter.getValue()); |
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213 | if (gluProject(1.06f, y, 0.0f, mv, prjm, viewport, &wx, &wy, &wz)) { |
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214 | char buff[20]; |
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215 | glLoadIdentity(); |
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216 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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217 | sprintf(buff, "%.*g", NUMDIGITS, iter.getValue()); |
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218 | _font->draw(buff); |
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219 | } |
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220 | } |
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221 | for (result = zAxis.firstMajor(iter); result; result = iter.next()) { |
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222 | float z; |
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223 | z = zAxis.map(iter.getValue()); |
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224 | if (gluProject(1.06f, 0.0f, z, mv, prjm, viewport, &wx, &wy, &wz)) { |
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225 | char buff[20]; |
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226 | glLoadIdentity(); |
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227 | glTranslatef((int) wx, (int) viewport[3] - (int)wy, 0.0f); |
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228 | sprintf(buff, "%.*g", NUMDIGITS, iter.getValue()); |
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229 | _font->draw(buff); |
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230 | } |
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231 | } |
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232 | _font->end(); |
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233 | }; |
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234 | |
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235 | glPopMatrix(); |
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236 | glPopAttrib(); |
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237 | } |
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238 | |
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239 | void Grid::setFont(Fonts *font) |
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240 | { |
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241 | _font = font; |
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242 | } |
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243 | |
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