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 <cassert> |
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9 | |
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10 | #include <vtkDataSet.h> |
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11 | #include <vtkDataSetMapper.h> |
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12 | #include <vtkUnstructuredGrid.h> |
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13 | #include <vtkProperty.h> |
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14 | #include <vtkPointData.h> |
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15 | #include <vtkImageData.h> |
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16 | #include <vtkLookupTable.h> |
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17 | #include <vtkDelaunay2D.h> |
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18 | #include <vtkDelaunay3D.h> |
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19 | #include <vtkGaussianSplatter.h> |
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20 | #include <vtkExtractVOI.h> |
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21 | #include <vtkDataSetSurfaceFilter.h> |
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22 | |
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23 | #include "RpPseudoColor.h" |
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24 | #include "Trace.h" |
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25 | |
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26 | using namespace Rappture::VtkVis; |
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27 | |
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28 | PseudoColor::PseudoColor() : |
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29 | _dataSet(NULL), |
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30 | _opacity(1.0), |
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31 | _edgeWidth(1.0) |
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32 | { |
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33 | _edgeColor[0] = 0.0; |
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34 | _edgeColor[1] = 0.0; |
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35 | _edgeColor[2] = 0.0; |
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36 | } |
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37 | |
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38 | PseudoColor::~PseudoColor() |
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39 | { |
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40 | #ifdef WANT_TRACE |
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41 | if (_dataSet != NULL) |
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42 | TRACE("Deleting PseudoColor for %s", _dataSet->getName().c_str()); |
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43 | else |
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44 | TRACE("Deleting PseudoColor with NULL DataSet"); |
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45 | #endif |
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46 | } |
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47 | |
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48 | /** |
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49 | * \brief Specify input DataSet with scalars to colormap |
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50 | * |
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51 | * Currently the DataSet must be image data (2D uniform grid) |
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52 | */ |
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53 | void PseudoColor::setDataSet(DataSet *dataSet) |
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54 | { |
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55 | if (_dataSet != dataSet) { |
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56 | _dataSet = dataSet; |
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57 | update(); |
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58 | } |
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59 | } |
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60 | |
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61 | /** |
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62 | * \brief Returns the DataSet this PseudoColor renders |
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63 | */ |
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64 | DataSet *PseudoColor::getDataSet() |
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65 | { |
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66 | return _dataSet; |
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67 | } |
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68 | |
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69 | /** |
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70 | * \brief Internal method to set up color mapper after a state change |
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71 | */ |
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72 | void PseudoColor::update() |
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73 | { |
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74 | if (_dataSet == NULL) |
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75 | return; |
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76 | |
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77 | vtkDataSet *ds = _dataSet->getVtkDataSet(); |
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78 | |
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79 | double dataRange[2]; |
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80 | _dataSet->getDataRange(dataRange); |
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81 | |
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82 | // Mapper, actor to render color-mapped data set |
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83 | if (_dsMapper == NULL) { |
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84 | _dsMapper = vtkSmartPointer<vtkDataSetMapper>::New(); |
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85 | } |
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86 | |
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87 | vtkPolyData *pd = vtkPolyData::SafeDownCast(ds); |
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88 | if (pd) { |
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89 | // DataSet is a vtkPolyData |
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90 | if (pd->GetNumberOfLines() == 0 && |
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91 | pd->GetNumberOfPolys() == 0 && |
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92 | pd->GetNumberOfStrips() == 0) { |
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93 | // DataSet is a point cloud |
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94 | if (_dataSet->is2D()) { |
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95 | #if 0 |
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96 | vtkSmartPointer<vtkDelaunay2D> mesher = vtkSmartPointer<vtkDelaunay2D>::New(); |
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97 | mesher->SetInput(pd); |
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98 | pd = mesher->GetOutput(); |
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99 | #else |
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100 | vtkSmartPointer<vtkGaussianSplatter> splatter = vtkSmartPointer<vtkGaussianSplatter>::New(); |
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101 | splatter->SetInput(pd); |
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102 | int dims[3]; |
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103 | splatter->GetSampleDimensions(dims); |
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104 | TRACE("Sample dims: %d %d %d", dims[0], dims[1], dims[2]); |
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105 | dims[2] = 3; |
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106 | splatter->SetSampleDimensions(dims); |
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107 | double bounds[6]; |
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108 | splatter->Update(); |
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109 | splatter->GetModelBounds(bounds); |
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110 | TRACE("Model bounds: %g %g %g %g %g %g", |
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111 | bounds[0], bounds[1], |
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112 | bounds[2], bounds[3], |
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113 | bounds[4], bounds[5]); |
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114 | vtkSmartPointer<vtkExtractVOI> slicer = vtkSmartPointer<vtkExtractVOI>::New(); |
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115 | slicer->SetInput(splatter->GetOutput()); |
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116 | slicer->SetVOI(0, dims[0]-1, 0, dims[1]-1, 1, 1); |
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117 | slicer->SetSampleRate(1, 1, 1); |
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118 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
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119 | gf->SetInput(slicer->GetOutput()); |
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120 | gf->Update(); |
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121 | pd = gf->GetOutput(); |
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122 | #endif |
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123 | assert(pd); |
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124 | _dsMapper->SetInput(pd); |
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125 | } else { |
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126 | vtkSmartPointer<vtkDelaunay3D> mesher = vtkSmartPointer<vtkDelaunay3D>::New(); |
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127 | mesher->SetInput(pd); |
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128 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
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129 | gf->SetInput(mesher->GetOutput()); |
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130 | gf->Update(); |
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131 | pd = gf->GetOutput(); |
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132 | assert(pd); |
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133 | _dsMapper->SetInput(pd); |
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134 | } |
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135 | } else { |
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136 | // DataSet is a vtkPolyData with lines and/or polygons |
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137 | _dsMapper->SetInput(ds); |
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138 | } |
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139 | } else { |
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140 | TRACE("Generating surface for data set"); |
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141 | // DataSet is NOT a vtkPolyData |
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142 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
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143 | gf->SetInput(ds); |
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144 | gf->Update(); |
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145 | pd = gf->GetOutput(); |
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146 | assert(pd); |
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147 | _dsMapper->SetInput(pd); |
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148 | } |
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149 | |
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150 | //_dsMapper->StaticOn(); |
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151 | |
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152 | if (ds->GetPointData() == NULL || |
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153 | ds->GetPointData()->GetScalars() == NULL) { |
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154 | ERROR("No scalar point data in dataset %s", _dataSet->getName().c_str()); |
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155 | if (_lut == NULL) { |
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156 | _lut = vtkSmartPointer<vtkLookupTable>::New(); |
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157 | } |
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158 | } else { |
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159 | vtkLookupTable *lut = ds->GetPointData()->GetScalars()->GetLookupTable(); |
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160 | TRACE("Data set scalars lookup table: %p\n", lut); |
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161 | if (_lut == NULL) { |
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162 | if (lut) |
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163 | _lut = lut; |
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164 | else |
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165 | _lut = vtkSmartPointer<vtkLookupTable>::New(); |
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166 | } |
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167 | } |
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168 | |
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169 | _lut->SetRange(dataRange); |
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170 | |
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171 | _dsMapper->UseLookupTableScalarRangeOn(); |
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172 | _dsMapper->SetLookupTable(_lut); |
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173 | //_dsMapper->InterpolateScalarsBeforeMappingOn(); |
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174 | |
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175 | initProp(); |
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176 | _dsActor->SetMapper(_dsMapper); |
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177 | } |
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178 | |
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179 | /** |
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180 | * \brief Get the VTK Prop for the colormapped dataset |
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181 | */ |
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182 | vtkProp *PseudoColor::getProp() |
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183 | { |
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184 | return _dsActor; |
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185 | } |
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186 | |
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187 | /** |
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188 | * \brief Create and initialize a VTK Prop to render the colormapped dataset |
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189 | */ |
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190 | void PseudoColor::initProp() |
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191 | { |
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192 | if (_dsActor == NULL) { |
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193 | _dsActor = vtkSmartPointer<vtkActor>::New(); |
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194 | _dsActor->GetProperty()->SetOpacity(_opacity); |
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195 | _dsActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
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196 | _dsActor->GetProperty()->SetLineWidth(_edgeWidth); |
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197 | _dsActor->GetProperty()->EdgeVisibilityOff(); |
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198 | } |
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199 | } |
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200 | |
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201 | /** |
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202 | * \brief Get the VTK colormap lookup table in use |
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203 | */ |
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204 | vtkLookupTable *PseudoColor::getLookupTable() |
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205 | { |
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206 | return _lut; |
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207 | } |
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208 | |
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209 | /** |
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210 | * \brief Associate a colormap lookup table with the DataSet |
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211 | */ |
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212 | void PseudoColor::setLookupTable(vtkLookupTable *lut) |
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213 | { |
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214 | if (lut == NULL) { |
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215 | _lut = vtkSmartPointer<vtkLookupTable>::New(); |
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216 | } else { |
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217 | _lut = lut; |
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218 | } |
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219 | |
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220 | if (_dsMapper != NULL) { |
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221 | _dsMapper->UseLookupTableScalarRangeOn(); |
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222 | _dsMapper->SetLookupTable(_lut); |
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223 | } |
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224 | } |
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225 | |
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226 | /** |
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227 | * \brief Turn on/off rendering of this colormapped dataset |
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228 | */ |
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229 | void PseudoColor::setVisibility(bool state) |
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230 | { |
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231 | if (_dsActor != NULL) { |
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232 | _dsActor->SetVisibility((state ? 1 : 0)); |
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233 | } |
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234 | } |
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235 | |
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236 | /** |
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237 | * \brief Get visibility state of the colormapped dataset |
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238 | * |
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239 | * \return Is PseudoColor visible? |
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240 | */ |
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241 | bool PseudoColor::getVisibility() |
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242 | { |
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243 | if (_dsActor == NULL) { |
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244 | return false; |
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245 | } else { |
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246 | return (_dsActor->GetVisibility() != 0); |
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247 | } |
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248 | } |
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249 | |
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250 | /** |
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251 | * \brief Set opacity used to render the colormapped dataset |
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252 | */ |
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253 | void PseudoColor::setOpacity(double opacity) |
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254 | { |
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255 | _opacity = opacity; |
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256 | if (_dsActor != NULL) |
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257 | _dsActor->GetProperty()->SetOpacity(opacity); |
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258 | } |
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259 | |
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260 | /** |
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261 | * \brief Turn on/off rendering of mesh edges |
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262 | */ |
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263 | void PseudoColor::setEdgeVisibility(bool state) |
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264 | { |
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265 | if (_dsActor != NULL) { |
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266 | _dsActor->GetProperty()->SetEdgeVisibility((state ? 1 : 0)); |
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267 | } |
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268 | } |
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269 | |
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270 | /** |
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271 | * \brief Set RGB color of polygon edges |
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272 | */ |
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273 | void PseudoColor::setEdgeColor(float color[3]) |
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274 | { |
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275 | _edgeColor[0] = color[0]; |
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276 | _edgeColor[1] = color[1]; |
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277 | _edgeColor[2] = color[2]; |
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278 | if (_dsActor != NULL) |
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279 | _dsActor->GetProperty()->SetEdgeColor(_edgeColor[0], _edgeColor[1], _edgeColor[2]); |
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280 | } |
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281 | |
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282 | /** |
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283 | * \brief Set pixel width of polygon edges (may be a no-op) |
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284 | */ |
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285 | void PseudoColor::setEdgeWidth(float edgeWidth) |
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286 | { |
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287 | _edgeWidth = edgeWidth; |
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288 | if (_dsActor != NULL) |
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289 | _dsActor->GetProperty()->SetLineWidth(_edgeWidth); |
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290 | } |
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291 | |
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292 | /** |
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293 | * \brief Set a group of world coordinate planes to clip rendering |
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294 | * |
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295 | * Passing NULL for planes will remove all cliping planes |
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296 | */ |
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297 | void PseudoColor::setClippingPlanes(vtkPlaneCollection *planes) |
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298 | { |
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299 | if (_dsMapper != NULL) { |
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300 | _dsMapper->SetClippingPlanes(planes); |
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301 | } |
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302 | } |
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303 | |
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304 | /** |
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305 | * \brief Turn on/off lighting of this object |
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306 | */ |
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307 | void PseudoColor::setLighting(bool state) |
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308 | { |
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309 | if (_dsActor != NULL) |
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310 | _dsActor->GetProperty()->SetLighting((state ? 1 : 0)); |
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311 | } |
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