1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (C) 2011, Purdue Research Foundation |
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4 | * |
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5 | * Author: Leif Delgass <ldelgass@purdue.edu> |
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6 | */ |
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7 | |
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8 | #include <cstdlib> |
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9 | #include <ctime> |
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10 | #include <cfloat> |
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11 | #include <cmath> |
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12 | |
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13 | #include <vtkMath.h> |
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14 | #include <vtkActor.h> |
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15 | #include <vtkProperty.h> |
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16 | #include <vtkPoints.h> |
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17 | #include <vtkCellArray.h> |
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18 | #include <vtkPolyLine.h> |
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19 | #include <vtkRegularPolygonSource.h> |
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20 | #include <vtkPointData.h> |
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21 | #include <vtkCellData.h> |
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22 | #include <vtkCellDataToPointData.h> |
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23 | #include <vtkPolyData.h> |
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24 | #include <vtkTubeFilter.h> |
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25 | #include <vtkRibbonFilter.h> |
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26 | #include <vtkTransform.h> |
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27 | #include <vtkTransformPolyDataFilter.h> |
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28 | |
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29 | #include "RpStreamlines.h" |
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30 | #include "Trace.h" |
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31 | |
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32 | using namespace Rappture::VtkVis; |
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33 | |
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34 | Streamlines::Streamlines() : |
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35 | VtkGraphicsObject(), |
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36 | _lineType(LINES), |
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37 | _colorMode(COLOR_BY_VECTOR_MAGNITUDE), |
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38 | _colorMap(NULL), |
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39 | _seedVisible(true) |
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40 | { |
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41 | _faceCulling = true; |
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42 | _color[0] = 1.0f; |
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43 | _color[1] = 1.0f; |
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44 | _color[2] = 1.0f; |
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45 | _seedColor[0] = 1.0f; |
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46 | _seedColor[1] = 1.0f; |
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47 | _seedColor[2] = 1.0f; |
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48 | vtkMath::RandomSeed((int)time(NULL)); |
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49 | srand((unsigned int)time(NULL)); |
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50 | } |
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51 | |
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52 | Streamlines::~Streamlines() |
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53 | { |
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54 | } |
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55 | |
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56 | void Streamlines::setDataSet(DataSet *dataSet, |
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57 | bool useCumulative, |
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58 | double scalarRange[2], |
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59 | double vectorMagnitudeRange[2], |
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60 | double vectorComponentRange[3][2]) |
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61 | { |
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62 | if (_dataSet != dataSet) { |
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63 | _dataSet = dataSet; |
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64 | |
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65 | if (useCumulative) { |
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66 | _dataRange[0] = scalarRange[0]; |
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67 | _dataRange[1] = scalarRange[1]; |
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68 | _vectorMagnitudeRange[0] = vectorMagnitudeRange[0]; |
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69 | _vectorMagnitudeRange[1] = vectorMagnitudeRange[1]; |
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70 | for (int i = 0; i < 3; i++) { |
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71 | _vectorComponentRange[i][0] = vectorComponentRange[i][0]; |
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72 | _vectorComponentRange[i][1] = vectorComponentRange[i][1]; |
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73 | } |
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74 | } else { |
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75 | _dataSet->getScalarRange(_dataRange); |
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76 | _dataSet->getVectorRange(_vectorMagnitudeRange); |
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77 | for (int i = 0; i < 3; i++) { |
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78 | _dataSet->getVectorRange(_vectorComponentRange[i], i); |
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79 | } |
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80 | } |
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81 | |
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82 | update(); |
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83 | } |
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84 | } |
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85 | |
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86 | /** |
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87 | * \brief Create and initialize a VTK Prop to render Streamlines |
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88 | */ |
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89 | void Streamlines::initProp() |
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90 | { |
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91 | if (_linesActor == NULL) { |
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92 | _linesActor = vtkSmartPointer<vtkActor>::New(); |
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93 | _linesActor->GetProperty()->SetColor(_color[0], _color[1], _color[2]); |
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94 | _linesActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
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95 | _linesActor->GetProperty()->SetLineWidth(_edgeWidth); |
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96 | _linesActor->GetProperty()->SetOpacity(_opacity); |
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97 | _linesActor->GetProperty()->SetAmbient(.2); |
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98 | if (!_lighting) |
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99 | _linesActor->GetProperty()->LightingOff(); |
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100 | switch (_lineType) { |
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101 | case LINES: |
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102 | setCulling(_linesActor->GetProperty(), false); |
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103 | _linesActor->GetProperty()->SetRepresentationToWireframe(); |
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104 | _linesActor->GetProperty()->EdgeVisibilityOff(); |
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105 | break; |
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106 | case TUBES: |
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107 | if (_faceCulling && _opacity == 1.0) |
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108 | setCulling(_linesActor->GetProperty(), true); |
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109 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
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110 | _linesActor->GetProperty()->EdgeVisibilityOff(); |
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111 | break; |
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112 | case RIBBONS: |
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113 | setCulling(_linesActor->GetProperty(), false); |
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114 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
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115 | _linesActor->GetProperty()->EdgeVisibilityOff(); |
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116 | break; |
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117 | default: |
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118 | ; |
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119 | } |
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120 | } |
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121 | if (_seedActor == NULL) { |
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122 | _seedActor = vtkSmartPointer<vtkActor>::New(); |
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123 | _seedActor->GetProperty()->SetColor(_seedColor[0], _seedColor[1], _seedColor[2]); |
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124 | _seedActor->GetProperty()->SetLineWidth(1); |
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125 | _seedActor->GetProperty()->SetPointSize(2); |
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126 | _seedActor->GetProperty()->SetOpacity(_opacity); |
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127 | _seedActor->GetProperty()->SetRepresentationToWireframe(); |
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128 | _seedActor->GetProperty()->LightingOff(); |
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129 | } |
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130 | if (_prop == NULL) { |
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131 | _prop = vtkSmartPointer<vtkAssembly>::New(); |
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132 | getAssembly()->AddPart(_linesActor); |
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133 | getAssembly()->AddPart(_seedActor); |
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134 | } |
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135 | } |
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136 | |
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137 | /** |
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138 | * \brief Get a pseudo-random number in range [min,max] |
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139 | */ |
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140 | double Streamlines::getRandomNum(double min, double max) |
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141 | { |
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142 | #if 1 |
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143 | return vtkMath::Random(min, max); |
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144 | #else |
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145 | int r = rand(); |
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146 | return (min + ((double)r / RAND_MAX) * (max - min)); |
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147 | #endif |
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148 | } |
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149 | |
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150 | /** |
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151 | * \brief Get a random 3D point within an AABB |
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152 | * |
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153 | * \param[out] pt The random point |
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154 | * \param[in] bounds The bounds of the AABB |
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155 | */ |
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156 | void Streamlines::getRandomPoint(double pt[3], const double bounds[6]) |
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157 | { |
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158 | pt[0] = getRandomNum(bounds[0], bounds[1]); |
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159 | pt[1] = getRandomNum(bounds[2], bounds[3]); |
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160 | pt[2] = getRandomNum(bounds[4], bounds[5]); |
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161 | } |
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162 | |
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163 | /** |
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164 | * \brief Get a random point within a triangle (including edges) |
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165 | * |
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166 | * \param[out] pt The random point |
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167 | * \param[in] v1 Triangle vertex 1 |
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168 | * \param[in] v2 Triangle vertex 2 |
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169 | * \param[in] v3 Triangle vertex 3 |
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170 | */ |
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171 | void Streamlines::getRandomPointInTriangle(double pt[3], |
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172 | const double v1[3], |
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173 | const double v2[3], |
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174 | const double v3[3]) |
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175 | { |
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176 | // Choose random barycentric coordinates |
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177 | double bary[3]; |
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178 | bary[0] = getRandomNum(0, 1); |
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179 | bary[1] = getRandomNum(0, 1); |
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180 | if (bary[0] + bary[1] > 1.0) { |
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181 | bary[0] = 1.0 - bary[0]; |
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182 | bary[1] = 1.0 - bary[1]; |
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183 | } |
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184 | bary[2] = 1.0 - bary[0] - bary[1]; |
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185 | |
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186 | TRACE("bary %g %g %g", bary[0], bary[1], bary[2]); |
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187 | // Convert to cartesian coords |
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188 | for (int i = 0; i < 3; i++) { |
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189 | pt[i] = v1[i] * bary[0] + v2[i] * bary[1] + v3[i] * bary[2]; |
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190 | } |
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191 | } |
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192 | |
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193 | /** |
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194 | * \brief Get a random point on a line segment (including endpoints) |
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195 | */ |
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196 | void Streamlines::getRandomPointOnLineSegment(double pt[3], |
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197 | const double endpt[3], |
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198 | const double endpt2[3]) |
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199 | { |
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200 | double ratio = getRandomNum(0, 1); |
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201 | pt[0] = endpt[0] + ratio * (endpt2[0] - endpt[0]); |
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202 | pt[1] = endpt[1] + ratio * (endpt2[1] - endpt[1]); |
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203 | pt[2] = endpt[2] + ratio * (endpt2[2] - endpt[2]); |
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204 | } |
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205 | |
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206 | /** |
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207 | * \brief Get a random point within a vtkDataSet's mesh |
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208 | * |
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209 | * Note: This currently doesn't give a uniform distribution of |
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210 | * points in space and can generate points outside the mesh |
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211 | */ |
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212 | void Streamlines::getRandomCellPt(double pt[3], vtkDataSet *ds) |
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213 | { |
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214 | int numCells = (int)ds->GetNumberOfCells(); |
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215 | // XXX: Not uniform distribution (shouldn't use mod, and assumes |
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216 | // all cells are equal area/volume) |
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217 | int cell = rand() % numCells; |
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218 | double bounds[6]; |
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219 | ds->GetCellBounds(cell, bounds); |
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220 | // Note: point is inside AABB of cell, but may be outside the cell |
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221 | getRandomPoint(pt, bounds); |
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222 | } |
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223 | |
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224 | /** |
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225 | * \brief Internal method to set up pipeline after a state change |
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226 | */ |
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227 | void Streamlines::update() |
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228 | { |
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229 | if (_dataSet == NULL) { |
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230 | return; |
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231 | } |
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232 | |
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233 | vtkDataSet *ds = _dataSet->getVtkDataSet(); |
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234 | |
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235 | double bounds[6]; |
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236 | _dataSet->getBounds(bounds); |
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237 | double maxBound = 0.0; |
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238 | if (bounds[1] - bounds[0] > maxBound) { |
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239 | maxBound = bounds[1] - bounds[0]; |
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240 | } |
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241 | if (bounds[3] - bounds[2] > maxBound) { |
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242 | maxBound = bounds[3] - bounds[2]; |
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243 | } |
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244 | if (bounds[5] - bounds[4] > maxBound) { |
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245 | maxBound = bounds[5] - bounds[4]; |
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246 | } |
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247 | |
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248 | vtkSmartPointer<vtkCellDataToPointData> cellToPtData; |
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249 | |
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250 | if (ds->GetPointData() == NULL || |
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251 | ds->GetPointData()->GetVectors() == NULL) { |
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252 | TRACE("No vector point data found in DataSet %s", _dataSet->getName().c_str()); |
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253 | if (ds->GetCellData() == NULL || |
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254 | ds->GetCellData()->GetVectors() == NULL) { |
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255 | ERROR("No vectors found in DataSet %s", _dataSet->getName().c_str()); |
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256 | } else { |
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257 | cellToPtData = |
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258 | vtkSmartPointer<vtkCellDataToPointData>::New(); |
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259 | cellToPtData->SetInput(ds); |
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260 | //cellToPtData->PassCellDataOn(); |
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261 | cellToPtData->Update(); |
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262 | ds = cellToPtData->GetOutput(); |
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263 | } |
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264 | } |
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265 | |
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266 | if (_streamTracer == NULL) { |
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267 | _streamTracer = vtkSmartPointer<vtkStreamTracer>::New(); |
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268 | } |
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269 | |
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270 | _streamTracer->SetInput(ds); |
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271 | _streamTracer->SetMaximumPropagation(maxBound); |
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272 | |
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273 | if (_pdMapper == NULL) { |
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274 | _pdMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
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275 | _pdMapper->SetResolveCoincidentTopologyToPolygonOffset(); |
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276 | _pdMapper->ScalarVisibilityOn(); |
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277 | } |
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278 | if (_seedMapper == NULL) { |
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279 | _seedMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
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280 | _seedMapper->SetResolveCoincidentTopologyToPolygonOffset(); |
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281 | } |
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282 | |
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283 | // Set up seed source object |
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284 | setSeedToRandomPoints(200); |
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285 | |
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286 | switch (_lineType) { |
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287 | case LINES: { |
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288 | _streamTracer->SetComputeVorticity(false); |
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289 | _pdMapper->SetInputConnection(_streamTracer->GetOutputPort()); |
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290 | } |
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291 | break; |
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292 | case TUBES: { |
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293 | _streamTracer->SetComputeVorticity(true); |
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294 | _lineFilter = vtkSmartPointer<vtkTubeFilter>::New(); |
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295 | vtkTubeFilter *tubeFilter = vtkTubeFilter::SafeDownCast(_lineFilter); |
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296 | tubeFilter->SetNumberOfSides(5); |
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297 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
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298 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
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299 | } |
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300 | break; |
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301 | case RIBBONS: { |
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302 | _streamTracer->SetComputeVorticity(true); |
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303 | _lineFilter = vtkSmartPointer<vtkRibbonFilter>::New(); |
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304 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
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305 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
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306 | } |
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307 | break; |
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308 | default: |
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309 | ERROR("Unknown LineType: %d", _lineType); |
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310 | } |
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311 | |
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312 | #if defined(DEBUG) && defined(WANT_TRACE) |
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313 | _streamTracer->Update(); |
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314 | vtkPolyData *pd = _streamTracer->GetOutput(); |
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315 | TRACE("Verts: %d Lines: %d Polys: %d Strips: %d", |
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316 | pd->GetNumberOfVerts(), |
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317 | pd->GetNumberOfLines(), |
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318 | pd->GetNumberOfPolys(), |
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319 | pd->GetNumberOfStrips()); |
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320 | #endif |
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321 | |
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322 | initProp(); |
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323 | |
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324 | _seedActor->SetMapper(_seedMapper); |
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325 | |
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326 | if (_lut == NULL) { |
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327 | setColorMap(ColorMap::getDefault()); |
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328 | } |
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329 | |
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330 | setColorMode(_colorMode); |
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331 | |
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332 | _linesActor->SetMapper(_pdMapper); |
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333 | _pdMapper->Update(); |
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334 | _seedMapper->Update(); |
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335 | } |
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336 | |
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337 | /** |
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338 | * \brief Use randomly distributed seed points |
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339 | * |
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340 | * Note: The current implementation doesn't give a uniform |
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341 | * distribution of points, and points outside the mesh bounds |
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342 | * may be generated |
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343 | * |
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344 | * \param[in] numPoints Number of random seed points to generate |
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345 | */ |
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346 | void Streamlines::setSeedToRandomPoints(int numPoints) |
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347 | { |
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348 | if (_streamTracer != NULL) { |
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349 | // Set up seed source object |
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350 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
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351 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
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352 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
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353 | |
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354 | for (int i = 0; i < numPoints; i++) { |
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355 | double pt[3]; |
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356 | getRandomCellPt(pt, _dataSet->getVtkDataSet()); |
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357 | TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
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358 | pts->InsertNextPoint(pt); |
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359 | cells->InsertNextCell(1); |
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360 | cells->InsertCellPoint(i); |
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361 | } |
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362 | |
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363 | seed->SetPoints(pts); |
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364 | seed->SetVerts(cells); |
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365 | |
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366 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
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367 | vtkSmartPointer<vtkDataSet> oldSeed; |
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368 | if (_streamTracer->GetSource() != NULL) { |
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369 | oldSeed = _streamTracer->GetSource(); |
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370 | } |
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371 | |
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372 | _streamTracer->SetSource(seed); |
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373 | if (oldSeed != NULL) { |
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374 | oldSeed->SetPipelineInformation(NULL); |
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375 | } |
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376 | |
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377 | _seedMapper->SetInput(seed); |
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378 | } |
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379 | } |
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380 | |
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381 | /** |
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382 | * \brief Use seed points along a line |
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383 | * |
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384 | * \param[in] start Starting point of rake line |
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385 | * \param[in] end End point of rake line |
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386 | * \param[in] numPoints Number of points along line to generate |
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387 | */ |
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388 | void Streamlines::setSeedToRake(double start[3], double end[3], int numPoints) |
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389 | { |
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390 | if (numPoints < 2) |
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391 | return; |
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392 | if (_streamTracer != NULL) { |
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393 | // Set up seed source object |
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394 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
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395 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
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396 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
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397 | vtkSmartPointer<vtkPolyLine> polyline = vtkSmartPointer<vtkPolyLine>::New(); |
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398 | |
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399 | double dir[3]; |
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400 | for (int i = 0; i < 3; i++) { |
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401 | dir[i] = end[i] - start[i]; |
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402 | } |
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403 | |
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404 | polyline->GetPointIds()->SetNumberOfIds(numPoints); |
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405 | for (int i = 0; i < numPoints; i++) { |
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406 | double pt[3]; |
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407 | for (int ii = 0; ii < 3; ii++) { |
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408 | pt[ii] = start[ii] + dir[ii] * ((double)i / (numPoints-1)); |
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409 | } |
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410 | TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
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411 | pts->InsertNextPoint(pt); |
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412 | polyline->GetPointIds()->SetId(i, i); |
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413 | } |
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414 | |
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415 | cells->InsertNextCell(polyline); |
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416 | seed->SetPoints(pts); |
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417 | seed->SetLines(cells); |
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418 | |
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419 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
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420 | vtkSmartPointer<vtkDataSet> oldSeed; |
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421 | if (_streamTracer->GetSource() != NULL) { |
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422 | oldSeed = _streamTracer->GetSource(); |
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423 | } |
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424 | |
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425 | _streamTracer->SetSource(seed); |
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426 | if (oldSeed != NULL) { |
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427 | oldSeed->SetPipelineInformation(NULL); |
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428 | } |
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429 | |
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430 | _seedMapper->SetInput(seed); |
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431 | } |
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432 | } |
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433 | |
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434 | /** |
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435 | * \brief Create seed points inside a disk with an optional hole |
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436 | * |
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437 | * \param[in] center Center point of disk |
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438 | * \param[in] normal Normal vector to orient disk |
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439 | * \param[in] radius Radius of disk |
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440 | * \param[in] innerRadius Radius of hole at center of disk |
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441 | * \param[in] numPoints Number of random points to generate |
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442 | */ |
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443 | void Streamlines::setSeedToDisk(double center[3], |
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444 | double normal[3], |
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445 | double radius, |
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446 | double innerRadius, |
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447 | int numPoints) |
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448 | { |
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449 | if (_streamTracer != NULL) { |
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450 | // Set up seed source object |
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451 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
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452 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
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453 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
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454 | |
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455 | // The following code is based on vtkRegularPolygonSource::RequestData |
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456 | |
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457 | double px[3]; |
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458 | double py[3]; |
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459 | double axis[3] = {1., 0., 0.}; |
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460 | |
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461 | if (vtkMath::Normalize(normal) == 0.0) { |
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462 | normal[0] = 0.0; |
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463 | normal[1] = 0.0; |
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464 | normal[2] = 1.0; |
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465 | } |
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466 | |
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467 | // Find axis in plane (orthogonal to normal) |
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468 | bool done = false; |
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469 | vtkMath::Cross(normal, axis, px); |
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470 | if (vtkMath::Normalize(px) > 1.0e-3) { |
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471 | done = true; |
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472 | } |
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473 | if (!done) { |
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474 | axis[0] = 0.0; |
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475 | axis[1] = 1.0; |
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476 | axis[2] = 0.0; |
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477 | vtkMath::Cross(normal, axis, px); |
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478 | if (vtkMath::Normalize(px) > 1.0e-3) { |
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479 | done = true; |
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480 | } |
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481 | } |
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482 | if (!done) { |
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483 | axis[0] = 0.0; |
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484 | axis[1] = 0.0; |
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485 | axis[2] = 1.0; |
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486 | vtkMath::Cross(normal, axis, px); |
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487 | vtkMath::Normalize(px); |
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488 | } |
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489 | // Create third orthogonal basis vector |
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490 | vtkMath::Cross(px, normal, py); |
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491 | |
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492 | double minSquared = (innerRadius*innerRadius)/(radius*radius); |
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493 | for (int j = 0; j < numPoints; j++) { |
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494 | // Get random sweep angle and radius |
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495 | double angle = getRandomNum(0, 2.0 * vtkMath::DoublePi()); |
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496 | // Need sqrt to get uniform distribution |
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497 | double r = sqrt(getRandomNum(minSquared, 1)) * radius; |
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498 | double pt[3]; |
---|
499 | for (int i = 0; i < 3; i++) { |
---|
500 | pt[i] = center[i] + r * (px[i] * cos(angle) + py[i] * sin(angle)); |
---|
501 | } |
---|
502 | TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
503 | pts->InsertNextPoint(pt); |
---|
504 | cells->InsertNextCell(1); |
---|
505 | cells->InsertCellPoint(j); |
---|
506 | } |
---|
507 | |
---|
508 | seed->SetPoints(pts); |
---|
509 | seed->SetVerts(cells); |
---|
510 | |
---|
511 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
512 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
513 | if (_streamTracer->GetSource() != NULL) { |
---|
514 | oldSeed = _streamTracer->GetSource(); |
---|
515 | } |
---|
516 | |
---|
517 | _streamTracer->SetSource(seed); |
---|
518 | if (oldSeed != NULL) { |
---|
519 | oldSeed->SetPipelineInformation(NULL); |
---|
520 | } |
---|
521 | |
---|
522 | _seedMapper->SetInput(seed); |
---|
523 | } |
---|
524 | } |
---|
525 | |
---|
526 | /** |
---|
527 | * \brief Use seed points from an n-sided polygon |
---|
528 | * |
---|
529 | * \param[in] center Center point of polygon |
---|
530 | * \param[in] normal Normal vector to orient polygon |
---|
531 | * \param[in] angle Angle in degrees to rotate about normal |
---|
532 | * \param[in] radius Radius of circumscribing circle |
---|
533 | * \param[in] numSides Number of polygon sides (and points) to generate |
---|
534 | */ |
---|
535 | void Streamlines::setSeedToPolygon(double center[3], |
---|
536 | double normal[3], |
---|
537 | double angle, |
---|
538 | double radius, |
---|
539 | int numSides) |
---|
540 | { |
---|
541 | if (_streamTracer != NULL) { |
---|
542 | // Set up seed source object |
---|
543 | vtkSmartPointer<vtkRegularPolygonSource> seed = vtkSmartPointer<vtkRegularPolygonSource>::New(); |
---|
544 | |
---|
545 | seed->SetCenter(center); |
---|
546 | seed->SetNormal(normal); |
---|
547 | seed->SetRadius(radius); |
---|
548 | seed->SetNumberOfSides(numSides); |
---|
549 | seed->GeneratePolygonOn(); |
---|
550 | |
---|
551 | if (angle != 0.0) { |
---|
552 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
---|
553 | trans->RotateWXYZ(angle, normal); |
---|
554 | vtkSmartPointer<vtkTransformPolyDataFilter> transFilt = |
---|
555 | vtkSmartPointer<vtkTransformPolyDataFilter>::New(); |
---|
556 | transFilt->SetInputConnection(seed->GetOutputPort()); |
---|
557 | transFilt->SetTransform(trans); |
---|
558 | } |
---|
559 | |
---|
560 | TRACE("Seed points: %d", numSides); |
---|
561 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
562 | if (_streamTracer->GetSource() != NULL) { |
---|
563 | oldSeed = _streamTracer->GetSource(); |
---|
564 | } |
---|
565 | |
---|
566 | if (angle != 0.0) { |
---|
567 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
---|
568 | trans->Translate(+center[0], +center[1], +center[2]); |
---|
569 | trans->RotateWXYZ(angle, normal); |
---|
570 | trans->Translate(-center[0], -center[1], -center[2]); |
---|
571 | vtkSmartPointer<vtkTransformPolyDataFilter> transFilt = |
---|
572 | vtkSmartPointer<vtkTransformPolyDataFilter>::New(); |
---|
573 | transFilt->SetInputConnection(seed->GetOutputPort()); |
---|
574 | transFilt->SetTransform(trans); |
---|
575 | _streamTracer->SetSourceConnection(transFilt->GetOutputPort()); |
---|
576 | _seedMapper->SetInputConnection(transFilt->GetOutputPort()); |
---|
577 | } else { |
---|
578 | _streamTracer->SetSourceConnection(seed->GetOutputPort()); |
---|
579 | _seedMapper->SetInputConnection(seed->GetOutputPort()); |
---|
580 | } |
---|
581 | |
---|
582 | if (oldSeed != NULL) { |
---|
583 | oldSeed->SetPipelineInformation(NULL); |
---|
584 | } |
---|
585 | } |
---|
586 | } |
---|
587 | |
---|
588 | /** |
---|
589 | * \brief Use seed points from an n-sided polygon |
---|
590 | * |
---|
591 | * \param[in] center Center point of polygon |
---|
592 | * \param[in] normal Normal vector to orient polygon |
---|
593 | * \param[in] angle Angle in degrees to rotate about normal |
---|
594 | * \param[in] radius Radius of circumscribing circle |
---|
595 | * \param[in] numSides Number of polygon sides (and points) to generate |
---|
596 | * \param[in] numPoints Number of random points to generate |
---|
597 | */ |
---|
598 | void Streamlines::setSeedToFilledPolygon(double center[3], |
---|
599 | double normal[3], |
---|
600 | double angle, |
---|
601 | double radius, |
---|
602 | int numSides, |
---|
603 | int numPoints) |
---|
604 | { |
---|
605 | if (_streamTracer != NULL) { |
---|
606 | // Set up seed source object |
---|
607 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
---|
608 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
---|
609 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
---|
610 | |
---|
611 | // The following code is based on vtkRegularPolygonSource::RequestData |
---|
612 | |
---|
613 | double px[3]; |
---|
614 | double py[3]; |
---|
615 | double axis[3] = {1., 0., 0.}; |
---|
616 | |
---|
617 | if (vtkMath::Normalize(normal) == 0.0) { |
---|
618 | normal[0] = 0.0; |
---|
619 | normal[1] = 0.0; |
---|
620 | normal[2] = 1.0; |
---|
621 | } |
---|
622 | |
---|
623 | // Find axis in plane (orthogonal to normal) |
---|
624 | bool done = false; |
---|
625 | vtkMath::Cross(normal, axis, px); |
---|
626 | if (vtkMath::Normalize(px) > 1.0e-3) { |
---|
627 | done = true; |
---|
628 | } |
---|
629 | if (!done) { |
---|
630 | axis[0] = 0.0; |
---|
631 | axis[1] = 1.0; |
---|
632 | axis[2] = 0.0; |
---|
633 | vtkMath::Cross(normal, axis, px); |
---|
634 | if (vtkMath::Normalize(px) > 1.0e-3) { |
---|
635 | done = true; |
---|
636 | } |
---|
637 | } |
---|
638 | if (!done) { |
---|
639 | axis[0] = 0.0; |
---|
640 | axis[1] = 0.0; |
---|
641 | axis[2] = 1.0; |
---|
642 | vtkMath::Cross(normal, axis, px); |
---|
643 | vtkMath::Normalize(px); |
---|
644 | } |
---|
645 | // Create third orthogonal basis vector |
---|
646 | vtkMath::Cross(px, normal, py); |
---|
647 | |
---|
648 | double verts[numSides][3]; |
---|
649 | double sliceTheta = 2.0 * vtkMath::DoublePi() / (double)numSides; |
---|
650 | angle = vtkMath::RadiansFromDegrees(angle); |
---|
651 | for (int j = 0; j < numSides; j++) { |
---|
652 | for (int i = 0; i < 3; i++) { |
---|
653 | double theta = sliceTheta * (double)j - angle; |
---|
654 | verts[j][i] = center[i] + radius * (px[i] * cos(theta) + |
---|
655 | py[i] * sin(theta)); |
---|
656 | } |
---|
657 | TRACE("Vert %d: %g %g %g", j, verts[j][0], verts[j][1], verts[j][2]); |
---|
658 | } |
---|
659 | |
---|
660 | // Note: this gives a uniform distribution because the polygon is regular and |
---|
661 | // the triangular sections have equal area |
---|
662 | if (numSides == 3) { |
---|
663 | for (int j = 0; j < numPoints; j++) { |
---|
664 | double pt[3]; |
---|
665 | getRandomPointInTriangle(pt, verts[0], verts[1], verts[2]); |
---|
666 | TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
667 | pts->InsertNextPoint(pt); |
---|
668 | cells->InsertNextCell(1); |
---|
669 | cells->InsertCellPoint(j); |
---|
670 | } |
---|
671 | } else { |
---|
672 | for (int j = 0; j < numPoints; j++) { |
---|
673 | // Get random triangle section |
---|
674 | int tri = rand() % numSides; |
---|
675 | double pt[3]; |
---|
676 | getRandomPointInTriangle(pt, center, verts[tri], verts[(tri+1) % numSides]); |
---|
677 | TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
678 | pts->InsertNextPoint(pt); |
---|
679 | cells->InsertNextCell(1); |
---|
680 | cells->InsertCellPoint(j); |
---|
681 | } |
---|
682 | } |
---|
683 | |
---|
684 | seed->SetPoints(pts); |
---|
685 | seed->SetVerts(cells); |
---|
686 | |
---|
687 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
688 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
689 | if (_streamTracer->GetSource() != NULL) { |
---|
690 | oldSeed = _streamTracer->GetSource(); |
---|
691 | } |
---|
692 | |
---|
693 | _streamTracer->SetSource(seed); |
---|
694 | if (oldSeed != NULL) { |
---|
695 | oldSeed->SetPipelineInformation(NULL); |
---|
696 | } |
---|
697 | |
---|
698 | _seedMapper->SetInput(seed); |
---|
699 | } |
---|
700 | } |
---|
701 | |
---|
702 | /** |
---|
703 | * \brief Set maximum length of stream lines in world coordinates |
---|
704 | */ |
---|
705 | void Streamlines::setMaxPropagation(double length) |
---|
706 | { |
---|
707 | if (_streamTracer != NULL) { |
---|
708 | _streamTracer->SetMaximumPropagation(length); |
---|
709 | } |
---|
710 | } |
---|
711 | |
---|
712 | /** |
---|
713 | * \brief Set streamline type to polylines |
---|
714 | */ |
---|
715 | void Streamlines::setLineTypeToLines() |
---|
716 | { |
---|
717 | _lineType = LINES; |
---|
718 | if (_streamTracer != NULL && |
---|
719 | _pdMapper != NULL) { |
---|
720 | _streamTracer->SetComputeVorticity(false); |
---|
721 | _pdMapper->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
722 | _lineFilter = NULL; |
---|
723 | setCulling(_linesActor->GetProperty(), false); |
---|
724 | _linesActor->GetProperty()->SetRepresentationToWireframe(); |
---|
725 | _linesActor->GetProperty()->LightingOff(); |
---|
726 | } |
---|
727 | } |
---|
728 | |
---|
729 | /** |
---|
730 | * \brief Set streamline type to 3D tubes |
---|
731 | * |
---|
732 | * \param[in] numSides Number of sides (>=3) for tubes |
---|
733 | * \param[in] radius World coordinate minimum tube radius |
---|
734 | */ |
---|
735 | void Streamlines::setLineTypeToTubes(int numSides, double radius) |
---|
736 | { |
---|
737 | _lineType = TUBES; |
---|
738 | if (_streamTracer != NULL) { |
---|
739 | _streamTracer->SetComputeVorticity(true); |
---|
740 | if (vtkTubeFilter::SafeDownCast(_lineFilter) == NULL) { |
---|
741 | _lineFilter = vtkSmartPointer<vtkTubeFilter>::New(); |
---|
742 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
743 | } |
---|
744 | vtkTubeFilter *tubeFilter = vtkTubeFilter::SafeDownCast(_lineFilter); |
---|
745 | if (numSides < 3) |
---|
746 | numSides = 3; |
---|
747 | tubeFilter->SetNumberOfSides(numSides); |
---|
748 | tubeFilter->SetRadius(radius); |
---|
749 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
---|
750 | if (_faceCulling && _opacity == 1.0) |
---|
751 | setCulling(_linesActor->GetProperty(), true); |
---|
752 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
---|
753 | _linesActor->GetProperty()->LightingOn(); |
---|
754 | } |
---|
755 | } |
---|
756 | |
---|
757 | /** |
---|
758 | * \brief Set streamline type to 3D ribbons |
---|
759 | * |
---|
760 | * \param[in] width Minimum half-width of ribbons |
---|
761 | * \param[in] angle Default ribbon angle in degrees from normal |
---|
762 | */ |
---|
763 | void Streamlines::setLineTypeToRibbons(double width, double angle) |
---|
764 | { |
---|
765 | _lineType = RIBBONS; |
---|
766 | if (_streamTracer != NULL) { |
---|
767 | _streamTracer->SetComputeVorticity(true); |
---|
768 | if (vtkRibbonFilter::SafeDownCast(_lineFilter) == NULL) { |
---|
769 | _lineFilter = vtkSmartPointer<vtkRibbonFilter>::New(); |
---|
770 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
771 | } |
---|
772 | vtkRibbonFilter *ribbonFilter = vtkRibbonFilter::SafeDownCast(_lineFilter); |
---|
773 | ribbonFilter->SetWidth(width); |
---|
774 | ribbonFilter->SetAngle(angle); |
---|
775 | ribbonFilter->UseDefaultNormalOn(); |
---|
776 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
---|
777 | setCulling(_linesActor->GetProperty(), false); |
---|
778 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
---|
779 | _linesActor->GetProperty()->LightingOn(); |
---|
780 | } |
---|
781 | } |
---|
782 | |
---|
783 | void Streamlines::updateRanges(bool useCumulative, |
---|
784 | double scalarRange[2], |
---|
785 | double vectorMagnitudeRange[2], |
---|
786 | double vectorComponentRange[3][2]) |
---|
787 | { |
---|
788 | if (useCumulative) { |
---|
789 | _dataRange[0] = scalarRange[0]; |
---|
790 | _dataRange[1] = scalarRange[1]; |
---|
791 | _vectorMagnitudeRange[0] = vectorMagnitudeRange[0]; |
---|
792 | _vectorMagnitudeRange[1] = vectorMagnitudeRange[1]; |
---|
793 | for (int i = 0; i < 3; i++) { |
---|
794 | _vectorComponentRange[i][0] = vectorComponentRange[i][0]; |
---|
795 | _vectorComponentRange[i][1] = vectorComponentRange[i][1]; |
---|
796 | } |
---|
797 | } else { |
---|
798 | _dataSet->getScalarRange(_dataRange); |
---|
799 | _dataSet->getVectorRange(_vectorMagnitudeRange); |
---|
800 | for (int i = 0; i < 3; i++) { |
---|
801 | _dataSet->getVectorRange(_vectorComponentRange[i], i); |
---|
802 | } |
---|
803 | } |
---|
804 | |
---|
805 | // Need to update color map ranges and/or active vector field |
---|
806 | setColorMode(_colorMode); |
---|
807 | } |
---|
808 | |
---|
809 | void Streamlines::setColorMode(ColorMode mode) |
---|
810 | { |
---|
811 | _colorMode = mode; |
---|
812 | if (_dataSet == NULL || _pdMapper == NULL) |
---|
813 | return; |
---|
814 | |
---|
815 | vtkDataSet *ds = _dataSet->getVtkDataSet(); |
---|
816 | |
---|
817 | switch (mode) { |
---|
818 | case COLOR_BY_SCALAR: { |
---|
819 | _pdMapper->ScalarVisibilityOn(); |
---|
820 | _pdMapper->SetScalarModeToDefault(); |
---|
821 | if (_lut != NULL) { |
---|
822 | _lut->SetRange(_dataRange); |
---|
823 | } |
---|
824 | } |
---|
825 | break; |
---|
826 | case COLOR_BY_VECTOR_MAGNITUDE: { |
---|
827 | _pdMapper->ScalarVisibilityOn(); |
---|
828 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
829 | if (ds->GetPointData() != NULL && |
---|
830 | ds->GetPointData()->GetVectors() != NULL) { |
---|
831 | _pdMapper->SelectColorArray(ds->GetPointData()->GetVectors()->GetName()); |
---|
832 | } |
---|
833 | if (_lut != NULL) { |
---|
834 | _lut->SetRange(_vectorMagnitudeRange); |
---|
835 | _lut->SetVectorModeToMagnitude(); |
---|
836 | } |
---|
837 | } |
---|
838 | break; |
---|
839 | case COLOR_BY_VECTOR_X: |
---|
840 | _pdMapper->ScalarVisibilityOn(); |
---|
841 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
842 | if (ds->GetPointData() != NULL && |
---|
843 | ds->GetPointData()->GetVectors() != NULL) { |
---|
844 | _pdMapper->SelectColorArray(ds->GetPointData()->GetVectors()->GetName()); |
---|
845 | } |
---|
846 | if (_lut != NULL) { |
---|
847 | _lut->SetRange(_vectorComponentRange[0]); |
---|
848 | _lut->SetVectorModeToComponent(); |
---|
849 | _lut->SetVectorComponent(0); |
---|
850 | } |
---|
851 | break; |
---|
852 | case COLOR_BY_VECTOR_Y: |
---|
853 | _pdMapper->ScalarVisibilityOn(); |
---|
854 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
855 | if (ds->GetPointData() != NULL && |
---|
856 | ds->GetPointData()->GetVectors() != NULL) { |
---|
857 | _pdMapper->SelectColorArray(ds->GetPointData()->GetVectors()->GetName()); |
---|
858 | } |
---|
859 | if (_lut != NULL) { |
---|
860 | _lut->SetRange(_vectorComponentRange[1]); |
---|
861 | _lut->SetVectorModeToComponent(); |
---|
862 | _lut->SetVectorComponent(1); |
---|
863 | } |
---|
864 | break; |
---|
865 | case COLOR_BY_VECTOR_Z: |
---|
866 | _pdMapper->ScalarVisibilityOn(); |
---|
867 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
868 | if (ds->GetPointData() != NULL && |
---|
869 | ds->GetPointData()->GetVectors() != NULL) { |
---|
870 | _pdMapper->SelectColorArray(ds->GetPointData()->GetVectors()->GetName()); |
---|
871 | } |
---|
872 | if (_lut != NULL) { |
---|
873 | _lut->SetRange(_vectorComponentRange[2]); |
---|
874 | _lut->SetVectorModeToComponent(); |
---|
875 | _lut->SetVectorComponent(2); |
---|
876 | } |
---|
877 | break; |
---|
878 | case COLOR_CONSTANT: |
---|
879 | default: |
---|
880 | _pdMapper->ScalarVisibilityOff(); |
---|
881 | break; |
---|
882 | } |
---|
883 | } |
---|
884 | |
---|
885 | /** |
---|
886 | * \brief Called when the color map has been edited |
---|
887 | */ |
---|
888 | void Streamlines::updateColorMap() |
---|
889 | { |
---|
890 | setColorMap(_colorMap); |
---|
891 | } |
---|
892 | |
---|
893 | /** |
---|
894 | * \brief Associate a colormap lookup table with the DataSet |
---|
895 | */ |
---|
896 | void Streamlines::setColorMap(ColorMap *cmap) |
---|
897 | { |
---|
898 | if (cmap == NULL) |
---|
899 | return; |
---|
900 | |
---|
901 | _colorMap = cmap; |
---|
902 | |
---|
903 | if (_lut == NULL) { |
---|
904 | _lut = vtkSmartPointer<vtkLookupTable>::New(); |
---|
905 | if (_pdMapper != NULL) { |
---|
906 | _pdMapper->UseLookupTableScalarRangeOn(); |
---|
907 | _pdMapper->SetLookupTable(_lut); |
---|
908 | } |
---|
909 | } |
---|
910 | |
---|
911 | _lut->DeepCopy(cmap->getLookupTable()); |
---|
912 | |
---|
913 | switch (_colorMode) { |
---|
914 | case COLOR_CONSTANT: |
---|
915 | case COLOR_BY_SCALAR: |
---|
916 | _lut->SetRange(_dataRange); |
---|
917 | break; |
---|
918 | case COLOR_BY_VECTOR_MAGNITUDE: |
---|
919 | _lut->SetVectorModeToMagnitude(); |
---|
920 | _lut->SetRange(_vectorMagnitudeRange); |
---|
921 | break; |
---|
922 | case COLOR_BY_VECTOR_X: |
---|
923 | _lut->SetVectorModeToComponent(); |
---|
924 | _lut->SetVectorComponent(0); |
---|
925 | _lut->SetRange(_vectorComponentRange[0]); |
---|
926 | break; |
---|
927 | case COLOR_BY_VECTOR_Y: |
---|
928 | _lut->SetVectorModeToComponent(); |
---|
929 | _lut->SetVectorComponent(1); |
---|
930 | _lut->SetRange(_vectorComponentRange[1]); |
---|
931 | break; |
---|
932 | case COLOR_BY_VECTOR_Z: |
---|
933 | _lut->SetVectorModeToComponent(); |
---|
934 | _lut->SetVectorComponent(2); |
---|
935 | _lut->SetRange(_vectorComponentRange[2]); |
---|
936 | break; |
---|
937 | default: |
---|
938 | break; |
---|
939 | } |
---|
940 | } |
---|
941 | |
---|
942 | /** |
---|
943 | * \brief Turn on/off lighting of this object |
---|
944 | */ |
---|
945 | void Streamlines::setLighting(bool state) |
---|
946 | { |
---|
947 | _lighting = state; |
---|
948 | if (_linesActor != NULL) |
---|
949 | _linesActor->GetProperty()->SetLighting((state ? 1 : 0)); |
---|
950 | } |
---|
951 | |
---|
952 | /** |
---|
953 | * \brief Set opacity of this object |
---|
954 | */ |
---|
955 | void Streamlines::setOpacity(double opacity) |
---|
956 | { |
---|
957 | _opacity = opacity; |
---|
958 | if (_linesActor != NULL) { |
---|
959 | _linesActor->GetProperty()->SetOpacity(_opacity); |
---|
960 | if (_opacity < 1.0) |
---|
961 | setCulling(_linesActor->GetProperty(), false); |
---|
962 | else if (_faceCulling && _lineType == TUBES) |
---|
963 | setCulling(_linesActor->GetProperty(), true); |
---|
964 | } |
---|
965 | if (_seedActor != NULL) { |
---|
966 | _seedActor->GetProperty()->SetOpacity(_opacity); |
---|
967 | } |
---|
968 | } |
---|
969 | |
---|
970 | /** |
---|
971 | * \brief Turn on/off rendering of this Streamlines |
---|
972 | */ |
---|
973 | void Streamlines::setVisibility(bool state) |
---|
974 | { |
---|
975 | if (_linesActor != NULL) { |
---|
976 | _linesActor->SetVisibility((state ? 1 : 0)); |
---|
977 | } |
---|
978 | if (_seedActor != NULL) { |
---|
979 | if (!state || |
---|
980 | (state && _seedVisible)) { |
---|
981 | _seedActor->SetVisibility((state ? 1 : 0)); |
---|
982 | } |
---|
983 | } |
---|
984 | } |
---|
985 | |
---|
986 | /** |
---|
987 | * \brief Turn on/off rendering of the seed geometry |
---|
988 | */ |
---|
989 | void Streamlines::setSeedVisibility(bool state) |
---|
990 | { |
---|
991 | _seedVisible = state; |
---|
992 | if (_seedActor != NULL) { |
---|
993 | _seedActor->SetVisibility((state ? 1 : 0)); |
---|
994 | } |
---|
995 | } |
---|
996 | |
---|
997 | /** |
---|
998 | * \brief Get visibility state of the Streamlines |
---|
999 | * |
---|
1000 | * \return Are the Streamlines visible? |
---|
1001 | */ |
---|
1002 | bool Streamlines::getVisibility() |
---|
1003 | { |
---|
1004 | if (_linesActor == NULL) { |
---|
1005 | return false; |
---|
1006 | } else { |
---|
1007 | return (_linesActor->GetVisibility() != 0); |
---|
1008 | } |
---|
1009 | } |
---|
1010 | |
---|
1011 | /** |
---|
1012 | * \brief Turn on/off rendering of edges |
---|
1013 | */ |
---|
1014 | void Streamlines::setEdgeVisibility(bool state) |
---|
1015 | { |
---|
1016 | if (_linesActor != NULL) { |
---|
1017 | _linesActor->GetProperty()->SetEdgeVisibility((state ? 1 : 0)); |
---|
1018 | } |
---|
1019 | } |
---|
1020 | |
---|
1021 | /** |
---|
1022 | * \brief Set RGB color of stream lines |
---|
1023 | */ |
---|
1024 | void Streamlines::setColor(float color[3]) |
---|
1025 | { |
---|
1026 | _color[0] = color[0]; |
---|
1027 | _color[1] = color[1]; |
---|
1028 | _color[2] = color[2]; |
---|
1029 | if (_linesActor != NULL) |
---|
1030 | _linesActor->GetProperty()->SetColor(_color[0], _color[1], _color[2]); |
---|
1031 | } |
---|
1032 | |
---|
1033 | /** |
---|
1034 | * \brief Set RGB color of stream line edges |
---|
1035 | */ |
---|
1036 | void Streamlines::setEdgeColor(float color[3]) |
---|
1037 | { |
---|
1038 | _edgeColor[0] = color[0]; |
---|
1039 | _edgeColor[1] = color[1]; |
---|
1040 | _edgeColor[2] = color[2]; |
---|
1041 | if (_linesActor != NULL) |
---|
1042 | _linesActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
---|
1043 | } |
---|
1044 | |
---|
1045 | /** |
---|
1046 | * \brief Set RGB color of seed geometry |
---|
1047 | */ |
---|
1048 | void Streamlines::setSeedColor(float color[3]) |
---|
1049 | { |
---|
1050 | _seedColor[0] = color[0]; |
---|
1051 | _seedColor[1] = color[1]; |
---|
1052 | _seedColor[2] = color[2]; |
---|
1053 | if (_seedActor != NULL) |
---|
1054 | _seedActor->GetProperty()->SetColor(_seedColor[0], _seedColor[1], _seedColor[2]); |
---|
1055 | } |
---|
1056 | |
---|
1057 | /** |
---|
1058 | * \brief Set pixel width of stream lines (may be a no-op) |
---|
1059 | */ |
---|
1060 | void Streamlines::setEdgeWidth(float edgeWidth) |
---|
1061 | { |
---|
1062 | _edgeWidth = edgeWidth; |
---|
1063 | if (_linesActor != NULL) |
---|
1064 | _linesActor->GetProperty()->SetLineWidth(_edgeWidth); |
---|
1065 | } |
---|
1066 | |
---|
1067 | /** |
---|
1068 | * \brief Set a group of world coordinate planes to clip rendering |
---|
1069 | * |
---|
1070 | * Passing NULL for planes will remove all cliping planes |
---|
1071 | */ |
---|
1072 | void Streamlines::setClippingPlanes(vtkPlaneCollection *planes) |
---|
1073 | { |
---|
1074 | if (_pdMapper != NULL) { |
---|
1075 | _pdMapper->SetClippingPlanes(planes); |
---|
1076 | } |
---|
1077 | if (_seedMapper != NULL) { |
---|
1078 | _seedMapper->SetClippingPlanes(planes); |
---|
1079 | } |
---|
1080 | } |
---|