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 <vtkPolygon.h> |
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24 | #include <vtkPolyData.h> |
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25 | #include <vtkTubeFilter.h> |
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26 | #include <vtkRibbonFilter.h> |
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27 | #include <vtkTransform.h> |
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28 | #include <vtkTransformPolyDataFilter.h> |
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29 | #include <vtkVertexGlyphFilter.h> |
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30 | |
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31 | #include "RpStreamlines.h" |
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32 | #include "Trace.h" |
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33 | |
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34 | using namespace Rappture::VtkVis; |
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35 | |
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36 | Streamlines::Streamlines() : |
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37 | VtkGraphicsObject(), |
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38 | _lineType(LINES), |
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39 | _colorMode(COLOR_BY_VECTOR_MAGNITUDE), |
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40 | _colorMap(NULL), |
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41 | _seedVisible(true), |
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42 | _dataScale(1) |
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43 | { |
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44 | _faceCulling = true; |
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45 | _color[0] = 1.0f; |
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46 | _color[1] = 1.0f; |
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47 | _color[2] = 1.0f; |
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48 | _seedColor[0] = 1.0f; |
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49 | _seedColor[1] = 1.0f; |
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50 | _seedColor[2] = 1.0f; |
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51 | vtkMath::RandomSeed((int)time(NULL)); |
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52 | srand((unsigned int)time(NULL)); |
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53 | } |
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54 | |
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55 | Streamlines::~Streamlines() |
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56 | { |
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57 | } |
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58 | |
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59 | void Streamlines::setDataSet(DataSet *dataSet, |
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60 | bool useCumulative, |
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61 | double scalarRange[2], |
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62 | double vectorMagnitudeRange[2], |
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63 | double vectorComponentRange[3][2]) |
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64 | { |
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65 | if (_dataSet != dataSet) { |
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66 | _dataSet = dataSet; |
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67 | |
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68 | if (useCumulative) { |
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69 | _dataRange[0] = scalarRange[0]; |
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70 | _dataRange[1] = scalarRange[1]; |
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71 | _vectorMagnitudeRange[0] = vectorMagnitudeRange[0]; |
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72 | _vectorMagnitudeRange[1] = vectorMagnitudeRange[1]; |
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73 | for (int i = 0; i < 3; i++) { |
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74 | _vectorComponentRange[i][0] = vectorComponentRange[i][0]; |
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75 | _vectorComponentRange[i][1] = vectorComponentRange[i][1]; |
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76 | } |
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77 | } else { |
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78 | _dataSet->getScalarRange(_dataRange); |
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79 | _dataSet->getVectorRange(_vectorMagnitudeRange); |
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80 | for (int i = 0; i < 3; i++) { |
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81 | _dataSet->getVectorRange(_vectorComponentRange[i], i); |
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82 | } |
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83 | } |
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84 | |
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85 | update(); |
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86 | } |
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87 | } |
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88 | |
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89 | /** |
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90 | * \brief Create and initialize a VTK Prop to render Streamlines |
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91 | */ |
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92 | void Streamlines::initProp() |
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93 | { |
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94 | if (_linesActor == NULL) { |
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95 | _linesActor = vtkSmartPointer<vtkActor>::New(); |
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96 | _linesActor->GetProperty()->SetColor(_color[0], _color[1], _color[2]); |
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97 | _linesActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
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98 | _linesActor->GetProperty()->SetLineWidth(_edgeWidth); |
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99 | _linesActor->GetProperty()->SetOpacity(_opacity); |
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100 | _linesActor->GetProperty()->SetAmbient(.2); |
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101 | if (!_lighting) |
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102 | _linesActor->GetProperty()->LightingOff(); |
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103 | switch (_lineType) { |
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104 | case LINES: |
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105 | setCulling(_linesActor->GetProperty(), false); |
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106 | _linesActor->GetProperty()->SetRepresentationToWireframe(); |
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107 | _linesActor->GetProperty()->EdgeVisibilityOff(); |
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108 | break; |
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109 | case TUBES: |
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110 | if (_faceCulling && _opacity == 1.0) |
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111 | setCulling(_linesActor->GetProperty(), true); |
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112 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
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113 | _linesActor->GetProperty()->EdgeVisibilityOff(); |
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114 | break; |
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115 | case RIBBONS: |
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116 | setCulling(_linesActor->GetProperty(), false); |
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117 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
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118 | _linesActor->GetProperty()->EdgeVisibilityOff(); |
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119 | break; |
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120 | default: |
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121 | ; |
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122 | } |
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123 | } |
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124 | if (_seedActor == NULL) { |
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125 | _seedActor = vtkSmartPointer<vtkActor>::New(); |
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126 | _seedActor->GetProperty()->SetColor(_seedColor[0], _seedColor[1], _seedColor[2]); |
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127 | _seedActor->GetProperty()->SetEdgeColor(_seedColor[0], _seedColor[1], _seedColor[2]); |
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128 | _seedActor->GetProperty()->SetLineWidth(1); |
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129 | _seedActor->GetProperty()->SetPointSize(2); |
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130 | _seedActor->GetProperty()->SetOpacity(_opacity); |
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131 | _seedActor->GetProperty()->SetRepresentationToWireframe(); |
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132 | _seedActor->GetProperty()->LightingOff(); |
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133 | setSeedVisibility(_seedVisible); |
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134 | } |
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135 | if (_prop == NULL) { |
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136 | _prop = vtkSmartPointer<vtkAssembly>::New(); |
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137 | getAssembly()->AddPart(_linesActor); |
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138 | getAssembly()->AddPart(_seedActor); |
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139 | } |
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140 | } |
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141 | |
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142 | /** |
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143 | * \brief Get a pseudo-random number in range [min,max] |
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144 | */ |
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145 | double Streamlines::getRandomNum(double min, double max) |
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146 | { |
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147 | #if 1 |
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148 | return vtkMath::Random(min, max); |
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149 | #else |
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150 | int r = rand(); |
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151 | return (min + ((double)r / RAND_MAX) * (max - min)); |
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152 | #endif |
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153 | } |
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154 | |
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155 | /** |
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156 | * \brief Get a random 3D point within an AABB |
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157 | * |
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158 | * \param[out] pt The random point |
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159 | * \param[in] bounds The bounds of the AABB |
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160 | */ |
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161 | void Streamlines::getRandomPoint(double pt[3], const double bounds[6]) |
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162 | { |
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163 | pt[0] = getRandomNum(bounds[0], bounds[1]); |
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164 | pt[1] = getRandomNum(bounds[2], bounds[3]); |
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165 | pt[2] = getRandomNum(bounds[4], bounds[5]); |
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166 | } |
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167 | |
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168 | /** |
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169 | * \brief Get a random point within a triangle (including edges) |
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170 | * |
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171 | * \param[out] pt The random point |
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172 | * \param[in] v1 Triangle vertex 1 |
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173 | * \param[in] v2 Triangle vertex 2 |
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174 | * \param[in] v3 Triangle vertex 3 |
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175 | */ |
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176 | void Streamlines::getRandomPointInTriangle(double pt[3], |
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177 | const double v0[3], |
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178 | const double v1[3], |
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179 | const double v2[3]) |
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180 | { |
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181 | // Choose random barycentric coordinates |
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182 | double bary[3]; |
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183 | bary[0] = getRandomNum(0, 1); |
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184 | bary[1] = getRandomNum(0, 1); |
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185 | if (bary[0] + bary[1] > 1.0) { |
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186 | bary[0] = 1.0 - bary[0]; |
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187 | bary[1] = 1.0 - bary[1]; |
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188 | } |
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189 | bary[2] = 1.0 - bary[0] - bary[1]; |
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190 | |
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191 | TRACE("bary %g %g %g", bary[0], bary[1], bary[2]); |
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192 | // Convert to cartesian coords |
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193 | for (int i = 0; i < 3; i++) { |
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194 | pt[i] = v0[i] * bary[0] + v1[i] * bary[1] + v2[i] * bary[2]; |
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195 | } |
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196 | } |
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197 | |
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198 | void Streamlines::getRandomPointInTetrahedron(double pt[3], |
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199 | const double v0[3], |
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200 | const double v1[3], |
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201 | const double v2[3], |
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202 | const double v3[3]) |
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203 | { |
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204 | // Choose random barycentric coordinates |
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205 | double bary[4]; |
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206 | bary[0] = getRandomNum(0, 1); |
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207 | bary[1] = getRandomNum(0, 1); |
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208 | bary[2] = getRandomNum(0, 1); |
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209 | if (bary[0] + bary[1] > 1.0) { |
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210 | bary[0] = 1.0 - bary[0]; |
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211 | bary[1] = 1.0 - bary[1]; |
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212 | } |
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213 | if (bary[1] + bary[2] > 1.0) { |
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214 | double tmp = bary[2]; |
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215 | bary[2] = 1.0 - bary[0] - bary[1]; |
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216 | bary[1] = 1.0 - tmp; |
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217 | } else if (bary[0] + bary[1] + bary[2] > 1.0) { |
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218 | double tmp = bary[2]; |
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219 | bary[2] = bary[0] + bary[1] + bary[2] - 1.0; |
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220 | bary[0] = 1.0 - bary[1] - tmp; |
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221 | } |
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222 | bary[3] = 1.0 - bary[0] - bary[1] - bary[2]; |
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223 | TRACE("bary %g %g %g %g", bary[0], bary[1], bary[2], bary[3]); |
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224 | // Convert to cartesian coords |
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225 | for (int i = 0; i < 3; i++) { |
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226 | #if 0 |
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227 | pt[i] = (v0[i] - v3[i]) * bary[0] + |
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228 | (v1[i] - v3[i]) * bary[1] + |
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229 | (v2[i] - v3[i]) * bary[2] + v3[i]; |
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230 | #else |
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231 | pt[i] = v0[i] * bary[0] + v1[i] * bary[1] + |
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232 | v2[i] * bary[2] + v3[i] * bary[3]; |
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233 | #endif |
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234 | } |
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235 | } |
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236 | |
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237 | /** |
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238 | * \brief Get a random point on a line segment (including endpoints) |
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239 | */ |
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240 | void Streamlines::getRandomPointOnLineSegment(double pt[3], |
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241 | const double endpt[3], |
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242 | const double endpt2[3]) |
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243 | { |
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244 | double ratio = getRandomNum(0, 1); |
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245 | pt[0] = endpt[0] + ratio * (endpt2[0] - endpt[0]); |
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246 | pt[1] = endpt[1] + ratio * (endpt2[1] - endpt[1]); |
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247 | pt[2] = endpt[2] + ratio * (endpt2[2] - endpt[2]); |
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248 | } |
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249 | |
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250 | /** |
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251 | * \brief Get a random point within a vtkDataSet's mesh |
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252 | * |
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253 | * Note: This currently doesn't always give a uniform distribution |
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254 | * of points in space and can generate points outside the mesh for |
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255 | * unusual cell types |
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256 | */ |
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257 | void Streamlines::getRandomCellPt(double pt[3], vtkDataSet *ds) |
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258 | { |
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259 | int numCells = (int)ds->GetNumberOfCells(); |
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260 | // XXX: Not uniform distribution (shouldn't use mod, and assumes |
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261 | // all cells are equal area/volume) |
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262 | int cell = rand() % numCells; |
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263 | int type = ds->GetCellType(cell); |
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264 | if (type == VTK_VERTEX) { |
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265 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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266 | ds->GetCellPoints(cell, ptIds); |
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267 | assert(ptIds->GetNumberOfIds() == 1); |
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268 | ds->GetPoint(ptIds->GetId(0), pt); |
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269 | } else if (type == VTK_POLY_VERTEX) { |
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270 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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271 | ds->GetCellPoints(cell, ptIds); |
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272 | assert(ptIds->GetNumberOfIds() >= 1); |
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273 | int id = rand() % ptIds->GetNumberOfIds(); |
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274 | ds->GetPoint(ptIds->GetId(id), pt); |
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275 | } else if (type == VTK_LINE) { |
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276 | double v[2][3]; |
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277 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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278 | ds->GetCellPoints(cell, ptIds); |
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279 | assert(ptIds->GetNumberOfIds() == 2); |
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280 | for (int i = 0; i < 2; i++) { |
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281 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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282 | } |
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283 | getRandomPointOnLineSegment(pt, v[0], v[1]); |
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284 | } else if (type == VTK_POLY_LINE) { |
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285 | double v[2][3]; |
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286 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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287 | ds->GetCellPoints(cell, ptIds); |
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288 | assert(ptIds->GetNumberOfIds() >= 2); |
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289 | int id = rand() % (ptIds->GetNumberOfIds()-1); |
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290 | for (int i = 0; i < 2; i++) { |
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291 | ds->GetPoint(ptIds->GetId(id+i), v[i]); |
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292 | } |
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293 | getRandomPointOnLineSegment(pt, v[0], v[1]); |
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294 | } else if (type == VTK_TRIANGLE) { |
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295 | double v[3][3]; |
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296 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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297 | ds->GetCellPoints(cell, ptIds); |
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298 | assert(ptIds->GetNumberOfIds() == 3); |
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299 | for (int i = 0; i < 3; i++) { |
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300 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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301 | } |
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302 | getRandomPointInTriangle(pt, v[0], v[1], v[2]); |
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303 | } else if (type == VTK_TRIANGLE_STRIP) { |
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304 | double v[3][3]; |
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305 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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306 | ds->GetCellPoints(cell, ptIds); |
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307 | assert(ptIds->GetNumberOfIds() >= 3); |
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308 | int id = rand() % (ptIds->GetNumberOfIds()-2); |
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309 | for (int i = 0; i < 3; i++) { |
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310 | ds->GetPoint(ptIds->GetId(id+i), v[i]); |
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311 | } |
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312 | getRandomPointInTriangle(pt, v[0], v[1], v[2]); |
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313 | } else if (type == VTK_POLYGON) { |
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314 | vtkPolygon *poly = vtkPolygon::SafeDownCast(ds->GetCell(cell)); |
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315 | assert (poly != NULL); |
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316 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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317 | poly->Triangulate(ptIds); |
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318 | assert(ptIds->GetNumberOfIds() >= 3 && ptIds->GetNumberOfIds() % 3 == 0); |
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319 | int tri = rand() % (ptIds->GetNumberOfIds()/3); |
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320 | double v[3][3]; |
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321 | for (int i = 0; i < 3; i++) { |
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322 | ds->GetPoint(ptIds->GetId(i + tri * 3), v[i]); |
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323 | } |
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324 | getRandomPointInTriangle(pt, v[0], v[1], v[2]); |
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325 | } else if (type == VTK_QUAD) { |
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326 | double v[4][3]; |
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327 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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328 | ds->GetCellPoints(cell, ptIds); |
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329 | assert(ptIds->GetNumberOfIds() == 4); |
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330 | for (int i = 0; i < 4; i++) { |
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331 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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332 | } |
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333 | int tri = rand() & 0x1; |
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334 | if (tri) { |
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335 | getRandomPointInTriangle(pt, v[0], v[1], v[2]); |
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336 | } else { |
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337 | getRandomPointInTriangle(pt, v[0], v[2], v[3]); |
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338 | } |
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339 | } else if (type == VTK_TETRA) { |
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340 | double v[4][3]; |
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341 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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342 | ds->GetCellPoints(cell, ptIds); |
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343 | assert(ptIds->GetNumberOfIds() == 4); |
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344 | for (int i = 0; i < 4; i++) { |
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345 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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346 | } |
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347 | getRandomPointInTetrahedron(pt, v[0], v[1], v[2], v[3]); |
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348 | } else if (type == VTK_HEXAHEDRON) { |
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349 | double v[8][3]; |
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350 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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351 | ds->GetCellPoints(cell, ptIds); |
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352 | assert(ptIds->GetNumberOfIds() == 8); |
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353 | for (int i = 0; i < 8; i++) { |
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354 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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355 | } |
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356 | int tetra = rand() % 5; |
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357 | switch (tetra) { |
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358 | case 0: |
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359 | getRandomPointInTetrahedron(pt, v[0], v[1], v[2], v[5]); |
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360 | break; |
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361 | case 1: |
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362 | getRandomPointInTetrahedron(pt, v[0], v[2], v[7], v[3]); |
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363 | break; |
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364 | case 2: |
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365 | getRandomPointInTetrahedron(pt, v[0], v[5], v[7], v[4]); |
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366 | break; |
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367 | case 3: |
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368 | getRandomPointInTetrahedron(pt, v[5], v[2], v[7], v[6]); |
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369 | break; |
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370 | case 4: |
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371 | default: |
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372 | getRandomPointInTetrahedron(pt, v[0], v[2], v[7], v[5]); |
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373 | break; |
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374 | } |
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375 | } else if (type == VTK_WEDGE) { |
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376 | double v[6][3]; |
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377 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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378 | ds->GetCellPoints(cell, ptIds); |
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379 | assert(ptIds->GetNumberOfIds() == 6); |
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380 | for (int i = 0; i < 6; i++) { |
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381 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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382 | } |
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383 | double vv[3][3]; |
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384 | getRandomPointOnLineSegment(vv[0], v[0], v[3]); |
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385 | getRandomPointOnLineSegment(vv[1], v[1], v[4]); |
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386 | getRandomPointOnLineSegment(vv[2], v[2], v[5]); |
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387 | getRandomPointInTriangle(pt, vv[0], vv[1], vv[2]); |
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388 | } else if (type == VTK_PYRAMID) { |
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389 | double v[5][3]; |
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390 | vtkSmartPointer<vtkIdList> ptIds = vtkSmartPointer<vtkIdList>::New(); |
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391 | ds->GetCellPoints(cell, ptIds); |
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392 | assert(ptIds->GetNumberOfIds() == 5); |
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393 | for (int i = 0; i < 5; i++) { |
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394 | ds->GetPoint(ptIds->GetId(i), v[i]); |
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395 | } |
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396 | int tetra = rand() & 0x1; |
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397 | if (tetra) { |
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398 | getRandomPointInTetrahedron(pt, v[0], v[1], v[2], v[4]); |
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399 | } else { |
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400 | getRandomPointInTetrahedron(pt, v[0], v[2], v[3], v[4]); |
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401 | } |
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402 | } else { |
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403 | double bounds[6]; |
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404 | ds->GetCellBounds(cell, bounds); |
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405 | // Note: For pixel/voxel cells, this is exact. However, if the cell is |
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406 | // not an axis aligned box, the point may be outside the cell |
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407 | getRandomPoint(pt, bounds); |
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408 | } |
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409 | } |
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410 | |
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411 | /** |
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412 | * \brief Internal method to set up pipeline after a state change |
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413 | */ |
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414 | void Streamlines::update() |
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415 | { |
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416 | if (_dataSet == NULL) { |
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417 | return; |
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418 | } |
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419 | |
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420 | vtkDataSet *ds = _dataSet->getVtkDataSet(); |
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421 | |
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422 | double bounds[6]; |
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423 | _dataSet->getBounds(bounds); |
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424 | double xLen = bounds[1] - bounds[0]; |
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425 | double yLen = bounds[3] - bounds[2]; |
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426 | double zLen = bounds[5] - bounds[4]; |
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427 | double maxBound = 0.0; |
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428 | if (xLen > maxBound) { |
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429 | maxBound = xLen; |
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430 | } |
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431 | if (yLen > maxBound) { |
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432 | maxBound = yLen; |
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433 | } |
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434 | if (zLen > maxBound) { |
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435 | maxBound = zLen; |
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436 | } |
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437 | |
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438 | double cellSizeRange[2]; |
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439 | double avgSize; |
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440 | _dataSet->getCellSizeRange(cellSizeRange, &avgSize); |
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441 | _dataScale = avgSize / 8.; |
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442 | |
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443 | vtkSmartPointer<vtkCellDataToPointData> cellToPtData; |
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444 | |
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445 | if (ds->GetPointData() == NULL || |
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446 | ds->GetPointData()->GetVectors() == NULL) { |
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447 | TRACE("No vector point data found in DataSet %s", _dataSet->getName().c_str()); |
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448 | if (ds->GetCellData() == NULL || |
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449 | ds->GetCellData()->GetVectors() == NULL) { |
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450 | ERROR("No vectors found in DataSet %s", _dataSet->getName().c_str()); |
---|
451 | } else { |
---|
452 | cellToPtData = |
---|
453 | vtkSmartPointer<vtkCellDataToPointData>::New(); |
---|
454 | cellToPtData->SetInput(ds); |
---|
455 | //cellToPtData->PassCellDataOn(); |
---|
456 | cellToPtData->Update(); |
---|
457 | ds = cellToPtData->GetOutput(); |
---|
458 | } |
---|
459 | } |
---|
460 | |
---|
461 | if (_streamTracer == NULL) { |
---|
462 | _streamTracer = vtkSmartPointer<vtkStreamTracer>::New(); |
---|
463 | } |
---|
464 | |
---|
465 | _streamTracer->SetInput(ds); |
---|
466 | _streamTracer->SetMaximumPropagation(xLen + yLen + zLen); |
---|
467 | _streamTracer->SetIntegratorTypeToRungeKutta45(); |
---|
468 | |
---|
469 | TRACE("Setting streamlines max length to %g", |
---|
470 | _streamTracer->GetMaximumPropagation()); |
---|
471 | |
---|
472 | if (_pdMapper == NULL) { |
---|
473 | _pdMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
---|
474 | _pdMapper->SetResolveCoincidentTopologyToPolygonOffset(); |
---|
475 | _pdMapper->ScalarVisibilityOn(); |
---|
476 | } |
---|
477 | if (_seedMapper == NULL) { |
---|
478 | _seedMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
---|
479 | _seedMapper->SetResolveCoincidentTopologyToPolygonOffset(); |
---|
480 | _seedMapper->ScalarVisibilityOff(); |
---|
481 | } |
---|
482 | |
---|
483 | // Set up seed source object |
---|
484 | setSeedToFilledMesh(200); |
---|
485 | |
---|
486 | switch (_lineType) { |
---|
487 | case LINES: { |
---|
488 | _streamTracer->SetComputeVorticity(false); |
---|
489 | _pdMapper->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
490 | } |
---|
491 | break; |
---|
492 | case TUBES: { |
---|
493 | _streamTracer->SetComputeVorticity(true); |
---|
494 | _lineFilter = vtkSmartPointer<vtkTubeFilter>::New(); |
---|
495 | vtkTubeFilter *tubeFilter = vtkTubeFilter::SafeDownCast(_lineFilter); |
---|
496 | tubeFilter->SetNumberOfSides(5); |
---|
497 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
498 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
---|
499 | } |
---|
500 | break; |
---|
501 | case RIBBONS: { |
---|
502 | _streamTracer->SetComputeVorticity(true); |
---|
503 | _lineFilter = vtkSmartPointer<vtkRibbonFilter>::New(); |
---|
504 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
505 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
---|
506 | } |
---|
507 | break; |
---|
508 | default: |
---|
509 | ERROR("Unknown LineType: %d", _lineType); |
---|
510 | } |
---|
511 | |
---|
512 | #if defined(DEBUG) && defined(WANT_TRACE) |
---|
513 | _streamTracer->Update(); |
---|
514 | vtkPolyData *pd = _streamTracer->GetOutput(); |
---|
515 | TRACE("Verts: %d Lines: %d Polys: %d Strips: %d", |
---|
516 | pd->GetNumberOfVerts(), |
---|
517 | pd->GetNumberOfLines(), |
---|
518 | pd->GetNumberOfPolys(), |
---|
519 | pd->GetNumberOfStrips()); |
---|
520 | #endif |
---|
521 | |
---|
522 | initProp(); |
---|
523 | |
---|
524 | _seedActor->SetMapper(_seedMapper); |
---|
525 | |
---|
526 | if (_lut == NULL) { |
---|
527 | setColorMap(ColorMap::getDefault()); |
---|
528 | } |
---|
529 | |
---|
530 | setColorMode(_colorMode); |
---|
531 | |
---|
532 | _linesActor->SetMapper(_pdMapper); |
---|
533 | _pdMapper->Update(); |
---|
534 | _seedMapper->Update(); |
---|
535 | } |
---|
536 | |
---|
537 | /** |
---|
538 | * \brief Use points of the DataSet associated with this |
---|
539 | * Streamlines as seeds |
---|
540 | */ |
---|
541 | void Streamlines::setSeedToMeshPoints() |
---|
542 | { |
---|
543 | setSeedToMeshPoints(_dataSet->getVtkDataSet()); |
---|
544 | } |
---|
545 | |
---|
546 | /** |
---|
547 | * \brief Use seed points randomly distributed within the cells |
---|
548 | * of the DataSet associated with this Streamlines |
---|
549 | * |
---|
550 | * Note: The current implementation doesn't give a uniform |
---|
551 | * distribution of points, and points outside the mesh bounds |
---|
552 | * may be generated |
---|
553 | * |
---|
554 | * \param[in] numPoints Number of random seed points to generate |
---|
555 | */ |
---|
556 | void Streamlines::setSeedToFilledMesh(int numPoints) |
---|
557 | { |
---|
558 | setSeedToFilledMesh(_dataSet->getVtkDataSet(), numPoints); |
---|
559 | } |
---|
560 | |
---|
561 | /** |
---|
562 | * \brief Use points of a supplied vtkDataSet as seeds |
---|
563 | * |
---|
564 | * \param[in] seed vtkDataSet with points to use as seeds |
---|
565 | */ |
---|
566 | void Streamlines::setSeedToMeshPoints(vtkDataSet *seed) |
---|
567 | { |
---|
568 | if (_streamTracer != NULL) { |
---|
569 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
570 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
571 | if (_streamTracer->GetSource() != NULL) { |
---|
572 | oldSeed = _streamTracer->GetSource(); |
---|
573 | } |
---|
574 | |
---|
575 | _streamTracer->SetSource(seed); |
---|
576 | if (oldSeed != NULL) { |
---|
577 | oldSeed->SetPipelineInformation(NULL); |
---|
578 | } |
---|
579 | |
---|
580 | if (vtkPolyData::SafeDownCast(seed) != NULL) { |
---|
581 | _seedMapper->SetInput(vtkPolyData::SafeDownCast(seed)); |
---|
582 | } else { |
---|
583 | vtkSmartPointer<vtkVertexGlyphFilter> vertFilter = vtkSmartPointer<vtkVertexGlyphFilter>::New(); |
---|
584 | vertFilter->SetInput(seed); |
---|
585 | _seedMapper->SetInputConnection(vertFilter->GetOutputPort()); |
---|
586 | } |
---|
587 | } |
---|
588 | } |
---|
589 | |
---|
590 | /** |
---|
591 | * \brief Use seed points randomly distributed within the cells |
---|
592 | * of a supplied vtkDataSet |
---|
593 | * |
---|
594 | * Note: The current implementation doesn't give a uniform |
---|
595 | * distribution of points, and points outside the mesh bounds |
---|
596 | * may be generated |
---|
597 | * |
---|
598 | * \param[in] ds vtkDataSet containing cells |
---|
599 | * \param[in] numPoints Number of random seed points to generate |
---|
600 | */ |
---|
601 | void Streamlines::setSeedToFilledMesh(vtkDataSet *ds, int numPoints) |
---|
602 | { |
---|
603 | if (_streamTracer != NULL) { |
---|
604 | // Set up seed source object |
---|
605 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
---|
606 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
---|
607 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
---|
608 | |
---|
609 | if (ds->GetNumberOfCells() < 1) { |
---|
610 | ERROR("No cells in mesh"); |
---|
611 | } |
---|
612 | |
---|
613 | for (int i = 0; i < numPoints; i++) { |
---|
614 | double pt[3]; |
---|
615 | getRandomCellPt(pt, ds); |
---|
616 | //TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
617 | pts->InsertNextPoint(pt); |
---|
618 | cells->InsertNextCell(1); |
---|
619 | cells->InsertCellPoint(i); |
---|
620 | } |
---|
621 | |
---|
622 | seed->SetPoints(pts); |
---|
623 | seed->SetVerts(cells); |
---|
624 | |
---|
625 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
626 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
627 | if (_streamTracer->GetSource() != NULL) { |
---|
628 | oldSeed = _streamTracer->GetSource(); |
---|
629 | } |
---|
630 | |
---|
631 | _streamTracer->SetSource(seed); |
---|
632 | if (oldSeed != NULL) { |
---|
633 | oldSeed->SetPipelineInformation(NULL); |
---|
634 | } |
---|
635 | |
---|
636 | _seedMapper->SetInput(seed); |
---|
637 | } |
---|
638 | } |
---|
639 | |
---|
640 | /** |
---|
641 | * \brief Use seed points along a line |
---|
642 | * |
---|
643 | * \param[in] start Starting point of rake line |
---|
644 | * \param[in] end End point of rake line |
---|
645 | * \param[in] numPoints Number of points along line to generate |
---|
646 | */ |
---|
647 | void Streamlines::setSeedToRake(double start[3], double end[3], int numPoints) |
---|
648 | { |
---|
649 | if (numPoints < 2) |
---|
650 | return; |
---|
651 | if (_streamTracer != NULL) { |
---|
652 | // Set up seed source object |
---|
653 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
---|
654 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
---|
655 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
---|
656 | vtkSmartPointer<vtkPolyLine> polyline = vtkSmartPointer<vtkPolyLine>::New(); |
---|
657 | |
---|
658 | double dir[3]; |
---|
659 | for (int i = 0; i < 3; i++) { |
---|
660 | dir[i] = end[i] - start[i]; |
---|
661 | } |
---|
662 | |
---|
663 | polyline->GetPointIds()->SetNumberOfIds(numPoints); |
---|
664 | for (int i = 0; i < numPoints; i++) { |
---|
665 | double pt[3]; |
---|
666 | for (int ii = 0; ii < 3; ii++) { |
---|
667 | pt[ii] = start[ii] + dir[ii] * ((double)i / (numPoints-1)); |
---|
668 | } |
---|
669 | //TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
670 | pts->InsertNextPoint(pt); |
---|
671 | polyline->GetPointIds()->SetId(i, i); |
---|
672 | } |
---|
673 | |
---|
674 | cells->InsertNextCell(polyline); |
---|
675 | seed->SetPoints(pts); |
---|
676 | seed->SetLines(cells); |
---|
677 | |
---|
678 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
679 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
680 | if (_streamTracer->GetSource() != NULL) { |
---|
681 | oldSeed = _streamTracer->GetSource(); |
---|
682 | } |
---|
683 | |
---|
684 | _streamTracer->SetSource(seed); |
---|
685 | if (oldSeed != NULL) { |
---|
686 | oldSeed->SetPipelineInformation(NULL); |
---|
687 | } |
---|
688 | |
---|
689 | _seedMapper->SetInput(seed); |
---|
690 | } |
---|
691 | } |
---|
692 | |
---|
693 | /** |
---|
694 | * \brief Create seed points inside a disk with an optional hole |
---|
695 | * |
---|
696 | * \param[in] center Center point of disk |
---|
697 | * \param[in] normal Normal vector to orient disk |
---|
698 | * \param[in] radius Radius of disk |
---|
699 | * \param[in] innerRadius Radius of hole at center of disk |
---|
700 | * \param[in] numPoints Number of random points to generate |
---|
701 | */ |
---|
702 | void Streamlines::setSeedToDisk(double center[3], |
---|
703 | double normal[3], |
---|
704 | double radius, |
---|
705 | double innerRadius, |
---|
706 | int numPoints) |
---|
707 | { |
---|
708 | if (_streamTracer != NULL) { |
---|
709 | // Set up seed source object |
---|
710 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
---|
711 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
---|
712 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
---|
713 | |
---|
714 | // The following code is based on vtkRegularPolygonSource::RequestData |
---|
715 | |
---|
716 | double px[3]; |
---|
717 | double py[3]; |
---|
718 | double axis[3] = {1., 0., 0.}; |
---|
719 | |
---|
720 | if (vtkMath::Normalize(normal) == 0.0) { |
---|
721 | normal[0] = 0.0; |
---|
722 | normal[1] = 0.0; |
---|
723 | normal[2] = 1.0; |
---|
724 | } |
---|
725 | |
---|
726 | // Find axis in plane (orthogonal to normal) |
---|
727 | bool done = false; |
---|
728 | vtkMath::Cross(normal, axis, px); |
---|
729 | if (vtkMath::Normalize(px) > 1.0e-3) { |
---|
730 | done = true; |
---|
731 | } |
---|
732 | if (!done) { |
---|
733 | axis[0] = 0.0; |
---|
734 | axis[1] = 1.0; |
---|
735 | axis[2] = 0.0; |
---|
736 | vtkMath::Cross(normal, axis, px); |
---|
737 | if (vtkMath::Normalize(px) > 1.0e-3) { |
---|
738 | done = true; |
---|
739 | } |
---|
740 | } |
---|
741 | if (!done) { |
---|
742 | axis[0] = 0.0; |
---|
743 | axis[1] = 0.0; |
---|
744 | axis[2] = 1.0; |
---|
745 | vtkMath::Cross(normal, axis, px); |
---|
746 | vtkMath::Normalize(px); |
---|
747 | } |
---|
748 | // Create third orthogonal basis vector |
---|
749 | vtkMath::Cross(px, normal, py); |
---|
750 | |
---|
751 | double minSquared = (innerRadius*innerRadius)/(radius*radius); |
---|
752 | for (int j = 0; j < numPoints; j++) { |
---|
753 | // Get random sweep angle and radius |
---|
754 | double angle = getRandomNum(0, 2.0 * vtkMath::DoublePi()); |
---|
755 | // Need sqrt to get uniform distribution |
---|
756 | double r = sqrt(getRandomNum(minSquared, 1)) * radius; |
---|
757 | double pt[3]; |
---|
758 | for (int i = 0; i < 3; i++) { |
---|
759 | pt[i] = center[i] + r * (px[i] * cos(angle) + py[i] * sin(angle)); |
---|
760 | } |
---|
761 | //TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
762 | pts->InsertNextPoint(pt); |
---|
763 | cells->InsertNextCell(1); |
---|
764 | cells->InsertCellPoint(j); |
---|
765 | } |
---|
766 | |
---|
767 | seed->SetPoints(pts); |
---|
768 | seed->SetVerts(cells); |
---|
769 | |
---|
770 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
771 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
772 | if (_streamTracer->GetSource() != NULL) { |
---|
773 | oldSeed = _streamTracer->GetSource(); |
---|
774 | } |
---|
775 | |
---|
776 | _streamTracer->SetSource(seed); |
---|
777 | if (oldSeed != NULL) { |
---|
778 | oldSeed->SetPipelineInformation(NULL); |
---|
779 | } |
---|
780 | |
---|
781 | _seedMapper->SetInput(seed); |
---|
782 | } |
---|
783 | } |
---|
784 | |
---|
785 | /** |
---|
786 | * \brief Use seed points from an n-sided polygon |
---|
787 | * |
---|
788 | * \param[in] center Center point of polygon |
---|
789 | * \param[in] normal Normal vector to orient polygon |
---|
790 | * \param[in] angle Angle in degrees to rotate about normal |
---|
791 | * \param[in] radius Radius of circumscribing circle |
---|
792 | * \param[in] numSides Number of polygon sides (and points) to generate |
---|
793 | */ |
---|
794 | void Streamlines::setSeedToPolygon(double center[3], |
---|
795 | double normal[3], |
---|
796 | double angle, |
---|
797 | double radius, |
---|
798 | int numSides) |
---|
799 | { |
---|
800 | if (_streamTracer != NULL) { |
---|
801 | // Set up seed source object |
---|
802 | vtkSmartPointer<vtkRegularPolygonSource> seed = vtkSmartPointer<vtkRegularPolygonSource>::New(); |
---|
803 | |
---|
804 | seed->SetCenter(center); |
---|
805 | seed->SetNormal(normal); |
---|
806 | seed->SetRadius(radius); |
---|
807 | seed->SetNumberOfSides(numSides); |
---|
808 | seed->GeneratePolygonOn(); |
---|
809 | |
---|
810 | if (angle != 0.0) { |
---|
811 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
---|
812 | trans->RotateWXYZ(angle, normal); |
---|
813 | vtkSmartPointer<vtkTransformPolyDataFilter> transFilt = |
---|
814 | vtkSmartPointer<vtkTransformPolyDataFilter>::New(); |
---|
815 | transFilt->SetInputConnection(seed->GetOutputPort()); |
---|
816 | transFilt->SetTransform(trans); |
---|
817 | } |
---|
818 | |
---|
819 | TRACE("Seed points: %d", numSides); |
---|
820 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
821 | if (_streamTracer->GetSource() != NULL) { |
---|
822 | oldSeed = _streamTracer->GetSource(); |
---|
823 | } |
---|
824 | |
---|
825 | if (angle != 0.0) { |
---|
826 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
---|
827 | trans->Translate(+center[0], +center[1], +center[2]); |
---|
828 | trans->RotateWXYZ(angle, normal); |
---|
829 | trans->Translate(-center[0], -center[1], -center[2]); |
---|
830 | vtkSmartPointer<vtkTransformPolyDataFilter> transFilt = |
---|
831 | vtkSmartPointer<vtkTransformPolyDataFilter>::New(); |
---|
832 | transFilt->SetInputConnection(seed->GetOutputPort()); |
---|
833 | transFilt->SetTransform(trans); |
---|
834 | _streamTracer->SetSourceConnection(transFilt->GetOutputPort()); |
---|
835 | _seedMapper->SetInputConnection(transFilt->GetOutputPort()); |
---|
836 | } else { |
---|
837 | _streamTracer->SetSourceConnection(seed->GetOutputPort()); |
---|
838 | _seedMapper->SetInputConnection(seed->GetOutputPort()); |
---|
839 | } |
---|
840 | |
---|
841 | if (oldSeed != NULL) { |
---|
842 | oldSeed->SetPipelineInformation(NULL); |
---|
843 | } |
---|
844 | } |
---|
845 | } |
---|
846 | |
---|
847 | /** |
---|
848 | * \brief Use seed points from an n-sided polygon |
---|
849 | * |
---|
850 | * \param[in] center Center point of polygon |
---|
851 | * \param[in] normal Normal vector to orient polygon |
---|
852 | * \param[in] angle Angle in degrees to rotate about normal |
---|
853 | * \param[in] radius Radius of circumscribing circle |
---|
854 | * \param[in] numSides Number of polygon sides (and points) to generate |
---|
855 | * \param[in] numPoints Number of random points to generate |
---|
856 | */ |
---|
857 | void Streamlines::setSeedToFilledPolygon(double center[3], |
---|
858 | double normal[3], |
---|
859 | double angle, |
---|
860 | double radius, |
---|
861 | int numSides, |
---|
862 | int numPoints) |
---|
863 | { |
---|
864 | if (_streamTracer != NULL) { |
---|
865 | // Set up seed source object |
---|
866 | vtkSmartPointer<vtkPolyData> seed = vtkSmartPointer<vtkPolyData>::New(); |
---|
867 | vtkSmartPointer<vtkPoints> pts = vtkSmartPointer<vtkPoints>::New(); |
---|
868 | vtkSmartPointer<vtkCellArray> cells = vtkSmartPointer<vtkCellArray>::New(); |
---|
869 | |
---|
870 | // The following code is based on vtkRegularPolygonSource::RequestData |
---|
871 | |
---|
872 | double px[3]; |
---|
873 | double py[3]; |
---|
874 | double axis[3] = {1., 0., 0.}; |
---|
875 | |
---|
876 | if (vtkMath::Normalize(normal) == 0.0) { |
---|
877 | normal[0] = 0.0; |
---|
878 | normal[1] = 0.0; |
---|
879 | normal[2] = 1.0; |
---|
880 | } |
---|
881 | |
---|
882 | // Find axis in plane (orthogonal to normal) |
---|
883 | bool done = false; |
---|
884 | vtkMath::Cross(normal, axis, px); |
---|
885 | if (vtkMath::Normalize(px) > 1.0e-3) { |
---|
886 | done = true; |
---|
887 | } |
---|
888 | if (!done) { |
---|
889 | axis[0] = 0.0; |
---|
890 | axis[1] = 1.0; |
---|
891 | axis[2] = 0.0; |
---|
892 | vtkMath::Cross(normal, axis, px); |
---|
893 | if (vtkMath::Normalize(px) > 1.0e-3) { |
---|
894 | done = true; |
---|
895 | } |
---|
896 | } |
---|
897 | if (!done) { |
---|
898 | axis[0] = 0.0; |
---|
899 | axis[1] = 0.0; |
---|
900 | axis[2] = 1.0; |
---|
901 | vtkMath::Cross(normal, axis, px); |
---|
902 | vtkMath::Normalize(px); |
---|
903 | } |
---|
904 | // Create third orthogonal basis vector |
---|
905 | vtkMath::Cross(px, normal, py); |
---|
906 | |
---|
907 | double verts[numSides][3]; |
---|
908 | double sliceTheta = 2.0 * vtkMath::DoublePi() / (double)numSides; |
---|
909 | angle = vtkMath::RadiansFromDegrees(angle); |
---|
910 | for (int j = 0; j < numSides; j++) { |
---|
911 | for (int i = 0; i < 3; i++) { |
---|
912 | double theta = sliceTheta * (double)j - angle; |
---|
913 | verts[j][i] = center[i] + radius * (px[i] * cos(theta) + |
---|
914 | py[i] * sin(theta)); |
---|
915 | } |
---|
916 | //TRACE("Vert %d: %g %g %g", j, verts[j][0], verts[j][1], verts[j][2]); |
---|
917 | } |
---|
918 | |
---|
919 | // Note: this gives a uniform distribution because the polygon is regular and |
---|
920 | // the triangular sections have equal area |
---|
921 | if (numSides == 3) { |
---|
922 | for (int j = 0; j < numPoints; j++) { |
---|
923 | double pt[3]; |
---|
924 | getRandomPointInTriangle(pt, verts[0], verts[1], verts[2]); |
---|
925 | //TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
926 | pts->InsertNextPoint(pt); |
---|
927 | cells->InsertNextCell(1); |
---|
928 | cells->InsertCellPoint(j); |
---|
929 | } |
---|
930 | } else { |
---|
931 | for (int j = 0; j < numPoints; j++) { |
---|
932 | // Get random triangle section |
---|
933 | int tri = rand() % numSides; |
---|
934 | double pt[3]; |
---|
935 | getRandomPointInTriangle(pt, center, verts[tri], verts[(tri+1) % numSides]); |
---|
936 | //TRACE("Seed pt: %g %g %g", pt[0], pt[1], pt[2]); |
---|
937 | pts->InsertNextPoint(pt); |
---|
938 | cells->InsertNextCell(1); |
---|
939 | cells->InsertCellPoint(j); |
---|
940 | } |
---|
941 | } |
---|
942 | |
---|
943 | seed->SetPoints(pts); |
---|
944 | seed->SetVerts(cells); |
---|
945 | |
---|
946 | TRACE("Seed points: %d", seed->GetNumberOfPoints()); |
---|
947 | vtkSmartPointer<vtkDataSet> oldSeed; |
---|
948 | if (_streamTracer->GetSource() != NULL) { |
---|
949 | oldSeed = _streamTracer->GetSource(); |
---|
950 | } |
---|
951 | |
---|
952 | _streamTracer->SetSource(seed); |
---|
953 | if (oldSeed != NULL) { |
---|
954 | oldSeed->SetPipelineInformation(NULL); |
---|
955 | } |
---|
956 | |
---|
957 | _seedMapper->SetInput(seed); |
---|
958 | } |
---|
959 | } |
---|
960 | |
---|
961 | /** |
---|
962 | * \brief Set the integration method used |
---|
963 | */ |
---|
964 | void Streamlines::setIntegrator(IntegratorType integrator) |
---|
965 | { |
---|
966 | if (_streamTracer != NULL) { |
---|
967 | switch (integrator) { |
---|
968 | case RUNGE_KUTTA2: |
---|
969 | _streamTracer->SetIntegratorTypeToRungeKutta2(); |
---|
970 | break; |
---|
971 | case RUNGE_KUTTA4: |
---|
972 | _streamTracer->SetIntegratorTypeToRungeKutta4(); |
---|
973 | break; |
---|
974 | case RUNGE_KUTTA45: |
---|
975 | _streamTracer->SetIntegratorTypeToRungeKutta45(); |
---|
976 | break; |
---|
977 | default: |
---|
978 | ; |
---|
979 | } |
---|
980 | } |
---|
981 | } |
---|
982 | |
---|
983 | /** |
---|
984 | * \brief Set the direction of integration |
---|
985 | */ |
---|
986 | void Streamlines::setIntegrationDirection(IntegrationDirection dir) |
---|
987 | { |
---|
988 | if (_streamTracer != NULL) { |
---|
989 | switch (dir) { |
---|
990 | case FORWARD: |
---|
991 | _streamTracer->SetIntegrationDirectionToForward(); |
---|
992 | break; |
---|
993 | case BACKWARD: |
---|
994 | _streamTracer->SetIntegrationDirectionToBackward(); |
---|
995 | break; |
---|
996 | case BOTH: |
---|
997 | _streamTracer->SetIntegrationDirectionToBoth(); |
---|
998 | break; |
---|
999 | default: |
---|
1000 | ; |
---|
1001 | } |
---|
1002 | } |
---|
1003 | } |
---|
1004 | |
---|
1005 | /** |
---|
1006 | * \brief Set the step size units. Length units are world |
---|
1007 | * coordinates, and cell units means steps are from cell to |
---|
1008 | * cell. Default is cell units. |
---|
1009 | * |
---|
1010 | * Note: calling this function will not convert existing |
---|
1011 | * initial, minimum or maximum step value settings to the |
---|
1012 | * new units, so this function should be called before |
---|
1013 | * setting step values. |
---|
1014 | */ |
---|
1015 | void Streamlines::setIntegrationStepUnit(StepUnit unit) |
---|
1016 | { |
---|
1017 | if (_streamTracer != NULL) { |
---|
1018 | switch (unit) { |
---|
1019 | case LENGTH_UNIT: |
---|
1020 | _streamTracer->SetIntegrationStepUnit(vtkStreamTracer::LENGTH_UNIT); |
---|
1021 | break; |
---|
1022 | case CELL_LENGTH_UNIT: |
---|
1023 | _streamTracer->SetIntegrationStepUnit(vtkStreamTracer::CELL_LENGTH_UNIT); |
---|
1024 | break; |
---|
1025 | default: |
---|
1026 | ; |
---|
1027 | } |
---|
1028 | } |
---|
1029 | } |
---|
1030 | |
---|
1031 | /** |
---|
1032 | * \brief Set initial step size for adaptive step integrator in |
---|
1033 | * step units (see setIntegrationStepUnit). For non-adaptive |
---|
1034 | * integrators, this is the fixed step size. |
---|
1035 | */ |
---|
1036 | void Streamlines::setInitialIntegrationStep(double step) |
---|
1037 | { |
---|
1038 | if (_streamTracer != NULL) { |
---|
1039 | _streamTracer->SetInitialIntegrationStep(step); |
---|
1040 | } |
---|
1041 | } |
---|
1042 | |
---|
1043 | /** |
---|
1044 | * \brief Set minimum step for adaptive step integrator in |
---|
1045 | * step units (see setIntegrationStepUnit) |
---|
1046 | */ |
---|
1047 | void Streamlines::setMinimumIntegrationStep(double step) |
---|
1048 | { |
---|
1049 | if (_streamTracer != NULL) { |
---|
1050 | _streamTracer->SetMinimumIntegrationStep(step); |
---|
1051 | } |
---|
1052 | } |
---|
1053 | |
---|
1054 | /** |
---|
1055 | * \brief Set maximum step for adaptive step integrator in |
---|
1056 | * step units (see setIntegrationStepUnit) |
---|
1057 | */ |
---|
1058 | void Streamlines::setMaximumIntegrationStep(double step) |
---|
1059 | { |
---|
1060 | if (_streamTracer != NULL) { |
---|
1061 | _streamTracer->SetMaximumIntegrationStep(step); |
---|
1062 | } |
---|
1063 | } |
---|
1064 | |
---|
1065 | /** |
---|
1066 | * \brief Set maximum error tolerance |
---|
1067 | */ |
---|
1068 | void Streamlines::setMaximumError(double error) |
---|
1069 | { |
---|
1070 | if (_streamTracer != NULL) { |
---|
1071 | _streamTracer->SetMaximumError(error); |
---|
1072 | } |
---|
1073 | } |
---|
1074 | |
---|
1075 | /** |
---|
1076 | * \brief Set maximum length of stream lines in world |
---|
1077 | * coordinates |
---|
1078 | */ |
---|
1079 | void Streamlines::setMaxPropagation(double length) |
---|
1080 | { |
---|
1081 | if (_streamTracer != NULL) { |
---|
1082 | _streamTracer->SetMaximumPropagation(length); |
---|
1083 | } |
---|
1084 | } |
---|
1085 | |
---|
1086 | /** |
---|
1087 | * \brief Set maximum number of integration steps |
---|
1088 | */ |
---|
1089 | void Streamlines::setMaxNumberOfSteps(int steps) |
---|
1090 | { |
---|
1091 | if (_streamTracer != NULL) { |
---|
1092 | _streamTracer->SetMaximumNumberOfSteps(steps); |
---|
1093 | } |
---|
1094 | } |
---|
1095 | |
---|
1096 | /** |
---|
1097 | * \brief Set the minimum speed before integration stops |
---|
1098 | */ |
---|
1099 | void Streamlines::setTerminalSpeed(double speed) |
---|
1100 | { |
---|
1101 | if (_streamTracer != NULL) { |
---|
1102 | _streamTracer->SetTerminalSpeed(speed); |
---|
1103 | } |
---|
1104 | } |
---|
1105 | |
---|
1106 | /** |
---|
1107 | * \brief Set streamline type to polylines |
---|
1108 | */ |
---|
1109 | void Streamlines::setLineTypeToLines() |
---|
1110 | { |
---|
1111 | _lineType = LINES; |
---|
1112 | if (_streamTracer != NULL && |
---|
1113 | _pdMapper != NULL) { |
---|
1114 | _streamTracer->SetComputeVorticity(false); |
---|
1115 | _pdMapper->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
1116 | _lineFilter = NULL; |
---|
1117 | setCulling(_linesActor->GetProperty(), false); |
---|
1118 | _linesActor->GetProperty()->SetRepresentationToWireframe(); |
---|
1119 | _linesActor->GetProperty()->LightingOff(); |
---|
1120 | } |
---|
1121 | } |
---|
1122 | |
---|
1123 | /** |
---|
1124 | * \brief Set streamline type to 3D tubes |
---|
1125 | * |
---|
1126 | * \param[in] numSides Number of sides (>=3) for tubes |
---|
1127 | * \param[in] radius World coordinate minimum tube radius |
---|
1128 | */ |
---|
1129 | void Streamlines::setLineTypeToTubes(int numSides, double radius) |
---|
1130 | { |
---|
1131 | _lineType = TUBES; |
---|
1132 | if (_streamTracer != NULL) { |
---|
1133 | _streamTracer->SetComputeVorticity(true); |
---|
1134 | if (vtkTubeFilter::SafeDownCast(_lineFilter) == NULL) { |
---|
1135 | _lineFilter = vtkSmartPointer<vtkTubeFilter>::New(); |
---|
1136 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
1137 | } |
---|
1138 | vtkTubeFilter *tubeFilter = vtkTubeFilter::SafeDownCast(_lineFilter); |
---|
1139 | if (numSides < 3) |
---|
1140 | numSides = 3; |
---|
1141 | tubeFilter->SetNumberOfSides(numSides); |
---|
1142 | tubeFilter->SetRadius(_dataScale * radius); |
---|
1143 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
---|
1144 | if (_faceCulling && _opacity == 1.0) |
---|
1145 | setCulling(_linesActor->GetProperty(), true); |
---|
1146 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
---|
1147 | _linesActor->GetProperty()->LightingOn(); |
---|
1148 | } |
---|
1149 | } |
---|
1150 | |
---|
1151 | /** |
---|
1152 | * \brief Set streamline type to 3D ribbons |
---|
1153 | * |
---|
1154 | * \param[in] width Minimum half-width of ribbons |
---|
1155 | * \param[in] angle Default ribbon angle in degrees from normal |
---|
1156 | */ |
---|
1157 | void Streamlines::setLineTypeToRibbons(double width, double angle) |
---|
1158 | { |
---|
1159 | _lineType = RIBBONS; |
---|
1160 | if (_streamTracer != NULL) { |
---|
1161 | _streamTracer->SetComputeVorticity(true); |
---|
1162 | if (vtkRibbonFilter::SafeDownCast(_lineFilter) == NULL) { |
---|
1163 | _lineFilter = vtkSmartPointer<vtkRibbonFilter>::New(); |
---|
1164 | _lineFilter->SetInputConnection(_streamTracer->GetOutputPort()); |
---|
1165 | } |
---|
1166 | vtkRibbonFilter *ribbonFilter = vtkRibbonFilter::SafeDownCast(_lineFilter); |
---|
1167 | ribbonFilter->SetWidth(_dataScale * width); |
---|
1168 | ribbonFilter->SetAngle(angle); |
---|
1169 | ribbonFilter->UseDefaultNormalOn(); |
---|
1170 | _pdMapper->SetInputConnection(_lineFilter->GetOutputPort()); |
---|
1171 | setCulling(_linesActor->GetProperty(), false); |
---|
1172 | _linesActor->GetProperty()->SetRepresentationToSurface(); |
---|
1173 | _linesActor->GetProperty()->LightingOn(); |
---|
1174 | } |
---|
1175 | } |
---|
1176 | |
---|
1177 | void Streamlines::updateRanges(bool useCumulative, |
---|
1178 | double scalarRange[2], |
---|
1179 | double vectorMagnitudeRange[2], |
---|
1180 | double vectorComponentRange[3][2]) |
---|
1181 | { |
---|
1182 | if (useCumulative) { |
---|
1183 | _dataRange[0] = scalarRange[0]; |
---|
1184 | _dataRange[1] = scalarRange[1]; |
---|
1185 | _vectorMagnitudeRange[0] = vectorMagnitudeRange[0]; |
---|
1186 | _vectorMagnitudeRange[1] = vectorMagnitudeRange[1]; |
---|
1187 | for (int i = 0; i < 3; i++) { |
---|
1188 | _vectorComponentRange[i][0] = vectorComponentRange[i][0]; |
---|
1189 | _vectorComponentRange[i][1] = vectorComponentRange[i][1]; |
---|
1190 | } |
---|
1191 | } else { |
---|
1192 | _dataSet->getScalarRange(_dataRange); |
---|
1193 | _dataSet->getVectorRange(_vectorMagnitudeRange); |
---|
1194 | for (int i = 0; i < 3; i++) { |
---|
1195 | _dataSet->getVectorRange(_vectorComponentRange[i], i); |
---|
1196 | } |
---|
1197 | } |
---|
1198 | |
---|
1199 | // Need to update color map ranges and/or active vector field |
---|
1200 | setColorMode(_colorMode); |
---|
1201 | } |
---|
1202 | |
---|
1203 | void Streamlines::setColorMode(ColorMode mode) |
---|
1204 | { |
---|
1205 | _colorMode = mode; |
---|
1206 | if (_dataSet == NULL || _pdMapper == NULL) |
---|
1207 | return; |
---|
1208 | |
---|
1209 | switch (mode) { |
---|
1210 | case COLOR_BY_SCALAR: { |
---|
1211 | _pdMapper->ScalarVisibilityOn(); |
---|
1212 | _pdMapper->SetScalarModeToDefault(); |
---|
1213 | if (_lut != NULL) { |
---|
1214 | _lut->SetRange(_dataRange); |
---|
1215 | } |
---|
1216 | } |
---|
1217 | break; |
---|
1218 | case COLOR_BY_VECTOR_MAGNITUDE: { |
---|
1219 | _pdMapper->ScalarVisibilityOn(); |
---|
1220 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
1221 | _pdMapper->SelectColorArray(_dataSet->getActiveVectorsName()); |
---|
1222 | if (_lut != NULL) { |
---|
1223 | _lut->SetRange(_vectorMagnitudeRange); |
---|
1224 | _lut->SetVectorModeToMagnitude(); |
---|
1225 | } |
---|
1226 | } |
---|
1227 | break; |
---|
1228 | case COLOR_BY_VECTOR_X: |
---|
1229 | _pdMapper->ScalarVisibilityOn(); |
---|
1230 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
1231 | _pdMapper->SelectColorArray(_dataSet->getActiveVectorsName()); |
---|
1232 | if (_lut != NULL) { |
---|
1233 | _lut->SetRange(_vectorComponentRange[0]); |
---|
1234 | _lut->SetVectorModeToComponent(); |
---|
1235 | _lut->SetVectorComponent(0); |
---|
1236 | } |
---|
1237 | break; |
---|
1238 | case COLOR_BY_VECTOR_Y: |
---|
1239 | _pdMapper->ScalarVisibilityOn(); |
---|
1240 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
1241 | _pdMapper->SelectColorArray(_dataSet->getActiveVectorsName()); |
---|
1242 | if (_lut != NULL) { |
---|
1243 | _lut->SetRange(_vectorComponentRange[1]); |
---|
1244 | _lut->SetVectorModeToComponent(); |
---|
1245 | _lut->SetVectorComponent(1); |
---|
1246 | } |
---|
1247 | break; |
---|
1248 | case COLOR_BY_VECTOR_Z: |
---|
1249 | _pdMapper->ScalarVisibilityOn(); |
---|
1250 | _pdMapper->SetScalarModeToUsePointFieldData(); |
---|
1251 | _pdMapper->SelectColorArray(_dataSet->getActiveVectorsName()); |
---|
1252 | if (_lut != NULL) { |
---|
1253 | _lut->SetRange(_vectorComponentRange[2]); |
---|
1254 | _lut->SetVectorModeToComponent(); |
---|
1255 | _lut->SetVectorComponent(2); |
---|
1256 | } |
---|
1257 | break; |
---|
1258 | case COLOR_CONSTANT: |
---|
1259 | default: |
---|
1260 | _pdMapper->ScalarVisibilityOff(); |
---|
1261 | break; |
---|
1262 | } |
---|
1263 | } |
---|
1264 | |
---|
1265 | /** |
---|
1266 | * \brief Called when the color map has been edited |
---|
1267 | */ |
---|
1268 | void Streamlines::updateColorMap() |
---|
1269 | { |
---|
1270 | setColorMap(_colorMap); |
---|
1271 | } |
---|
1272 | |
---|
1273 | /** |
---|
1274 | * \brief Associate a colormap lookup table with the DataSet |
---|
1275 | */ |
---|
1276 | void Streamlines::setColorMap(ColorMap *cmap) |
---|
1277 | { |
---|
1278 | if (cmap == NULL) |
---|
1279 | return; |
---|
1280 | |
---|
1281 | _colorMap = cmap; |
---|
1282 | |
---|
1283 | if (_lut == NULL) { |
---|
1284 | _lut = vtkSmartPointer<vtkLookupTable>::New(); |
---|
1285 | if (_pdMapper != NULL) { |
---|
1286 | _pdMapper->UseLookupTableScalarRangeOn(); |
---|
1287 | _pdMapper->SetLookupTable(_lut); |
---|
1288 | } |
---|
1289 | } |
---|
1290 | |
---|
1291 | _lut->DeepCopy(cmap->getLookupTable()); |
---|
1292 | |
---|
1293 | switch (_colorMode) { |
---|
1294 | case COLOR_CONSTANT: |
---|
1295 | case COLOR_BY_SCALAR: |
---|
1296 | _lut->SetRange(_dataRange); |
---|
1297 | break; |
---|
1298 | case COLOR_BY_VECTOR_MAGNITUDE: |
---|
1299 | _lut->SetVectorModeToMagnitude(); |
---|
1300 | _lut->SetRange(_vectorMagnitudeRange); |
---|
1301 | break; |
---|
1302 | case COLOR_BY_VECTOR_X: |
---|
1303 | _lut->SetVectorModeToComponent(); |
---|
1304 | _lut->SetVectorComponent(0); |
---|
1305 | _lut->SetRange(_vectorComponentRange[0]); |
---|
1306 | break; |
---|
1307 | case COLOR_BY_VECTOR_Y: |
---|
1308 | _lut->SetVectorModeToComponent(); |
---|
1309 | _lut->SetVectorComponent(1); |
---|
1310 | _lut->SetRange(_vectorComponentRange[1]); |
---|
1311 | break; |
---|
1312 | case COLOR_BY_VECTOR_Z: |
---|
1313 | _lut->SetVectorModeToComponent(); |
---|
1314 | _lut->SetVectorComponent(2); |
---|
1315 | _lut->SetRange(_vectorComponentRange[2]); |
---|
1316 | break; |
---|
1317 | default: |
---|
1318 | break; |
---|
1319 | } |
---|
1320 | } |
---|
1321 | |
---|
1322 | /** |
---|
1323 | * \brief Turn on/off lighting of this object |
---|
1324 | */ |
---|
1325 | void Streamlines::setLighting(bool state) |
---|
1326 | { |
---|
1327 | _lighting = state; |
---|
1328 | if (_linesActor != NULL) |
---|
1329 | _linesActor->GetProperty()->SetLighting((state ? 1 : 0)); |
---|
1330 | } |
---|
1331 | |
---|
1332 | /** |
---|
1333 | * \brief Set opacity of this object |
---|
1334 | */ |
---|
1335 | void Streamlines::setOpacity(double opacity) |
---|
1336 | { |
---|
1337 | _opacity = opacity; |
---|
1338 | if (_linesActor != NULL) { |
---|
1339 | _linesActor->GetProperty()->SetOpacity(_opacity); |
---|
1340 | if (_opacity < 1.0) |
---|
1341 | setCulling(_linesActor->GetProperty(), false); |
---|
1342 | else if (_faceCulling && _lineType == TUBES) |
---|
1343 | setCulling(_linesActor->GetProperty(), true); |
---|
1344 | } |
---|
1345 | if (_seedActor != NULL) { |
---|
1346 | _seedActor->GetProperty()->SetOpacity(_opacity); |
---|
1347 | } |
---|
1348 | } |
---|
1349 | |
---|
1350 | /** |
---|
1351 | * \brief Turn on/off rendering of this Streamlines |
---|
1352 | */ |
---|
1353 | void Streamlines::setVisibility(bool state) |
---|
1354 | { |
---|
1355 | if (_linesActor != NULL) { |
---|
1356 | _linesActor->SetVisibility((state ? 1 : 0)); |
---|
1357 | } |
---|
1358 | if (_seedActor != NULL) { |
---|
1359 | if (!state || |
---|
1360 | (state && _seedVisible)) { |
---|
1361 | _seedActor->SetVisibility((state ? 1 : 0)); |
---|
1362 | } |
---|
1363 | } |
---|
1364 | } |
---|
1365 | |
---|
1366 | /** |
---|
1367 | * \brief Turn on/off rendering of the seed geometry |
---|
1368 | */ |
---|
1369 | void Streamlines::setSeedVisibility(bool state) |
---|
1370 | { |
---|
1371 | _seedVisible = state; |
---|
1372 | if (_seedActor != NULL) { |
---|
1373 | _seedActor->SetVisibility((state ? 1 : 0)); |
---|
1374 | } |
---|
1375 | } |
---|
1376 | |
---|
1377 | /** |
---|
1378 | * \brief Get visibility state of the Streamlines |
---|
1379 | * |
---|
1380 | * \return Are the Streamlines visible? |
---|
1381 | */ |
---|
1382 | bool Streamlines::getVisibility() |
---|
1383 | { |
---|
1384 | if (_linesActor == NULL) { |
---|
1385 | return false; |
---|
1386 | } else { |
---|
1387 | return (_linesActor->GetVisibility() != 0); |
---|
1388 | } |
---|
1389 | } |
---|
1390 | |
---|
1391 | /** |
---|
1392 | * \brief Turn on/off rendering of edges |
---|
1393 | */ |
---|
1394 | void Streamlines::setEdgeVisibility(bool state) |
---|
1395 | { |
---|
1396 | if (_linesActor != NULL) { |
---|
1397 | _linesActor->GetProperty()->SetEdgeVisibility((state ? 1 : 0)); |
---|
1398 | } |
---|
1399 | } |
---|
1400 | |
---|
1401 | /** |
---|
1402 | * \brief Set RGB color of stream lines |
---|
1403 | */ |
---|
1404 | void Streamlines::setColor(float color[3]) |
---|
1405 | { |
---|
1406 | _color[0] = color[0]; |
---|
1407 | _color[1] = color[1]; |
---|
1408 | _color[2] = color[2]; |
---|
1409 | if (_linesActor != NULL) |
---|
1410 | _linesActor->GetProperty()->SetColor(_color[0], _color[1], _color[2]); |
---|
1411 | } |
---|
1412 | |
---|
1413 | /** |
---|
1414 | * \brief Set RGB color of stream line edges |
---|
1415 | */ |
---|
1416 | void Streamlines::setEdgeColor(float color[3]) |
---|
1417 | { |
---|
1418 | _edgeColor[0] = color[0]; |
---|
1419 | _edgeColor[1] = color[1]; |
---|
1420 | _edgeColor[2] = color[2]; |
---|
1421 | if (_linesActor != NULL) |
---|
1422 | _linesActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
---|
1423 | } |
---|
1424 | |
---|
1425 | /** |
---|
1426 | * \brief Set RGB color of seed geometry |
---|
1427 | */ |
---|
1428 | void Streamlines::setSeedColor(float color[3]) |
---|
1429 | { |
---|
1430 | _seedColor[0] = color[0]; |
---|
1431 | _seedColor[1] = color[1]; |
---|
1432 | _seedColor[2] = color[2]; |
---|
1433 | if (_seedActor != NULL) { |
---|
1434 | _seedActor->GetProperty()->SetColor(_seedColor[0], _seedColor[1], _seedColor[2]); |
---|
1435 | _seedActor->GetProperty()->SetEdgeColor(_seedColor[0], _seedColor[1], _seedColor[2]); |
---|
1436 | } |
---|
1437 | } |
---|
1438 | |
---|
1439 | /** |
---|
1440 | * \brief Set pixel width of stream lines (may be a no-op) |
---|
1441 | */ |
---|
1442 | void Streamlines::setEdgeWidth(float edgeWidth) |
---|
1443 | { |
---|
1444 | _edgeWidth = edgeWidth; |
---|
1445 | if (_linesActor != NULL) |
---|
1446 | _linesActor->GetProperty()->SetLineWidth(_edgeWidth); |
---|
1447 | } |
---|
1448 | |
---|
1449 | /** |
---|
1450 | * \brief Set a group of world coordinate planes to clip rendering |
---|
1451 | * |
---|
1452 | * Passing NULL for planes will remove all cliping planes |
---|
1453 | */ |
---|
1454 | void Streamlines::setClippingPlanes(vtkPlaneCollection *planes) |
---|
1455 | { |
---|
1456 | if (_pdMapper != NULL) { |
---|
1457 | _pdMapper->SetClippingPlanes(planes); |
---|
1458 | } |
---|
1459 | if (_seedMapper != NULL) { |
---|
1460 | _seedMapper->SetClippingPlanes(planes); |
---|
1461 | } |
---|
1462 | } |
---|