1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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2 | /* |
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3 | * Copyright (C) 2004-2012 HUBzero Foundation, LLC |
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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 <vtkPolyData.h> |
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12 | #include <vtkUnstructuredGrid.h> |
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13 | #include <vtkPolyDataMapper.h> |
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14 | #include <vtkActor.h> |
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15 | #include <vtkProperty.h> |
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16 | #include <vtkTransform.h> |
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17 | #include <vtkDelaunay2D.h> |
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18 | #include <vtkDelaunay3D.h> |
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19 | #include <vtkDataSetSurfaceFilter.h> |
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20 | |
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21 | #include "PolyData.h" |
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22 | #include "Trace.h" |
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23 | |
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24 | using namespace VtkVis; |
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25 | |
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26 | PolyData::PolyData() : |
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27 | VtkGraphicsObject() |
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28 | { |
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29 | } |
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30 | |
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31 | PolyData::~PolyData() |
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32 | { |
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33 | #ifdef WANT_TRACE |
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34 | if (_dataSet != NULL) |
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35 | TRACE("Deleting PolyData for %s", _dataSet->getName().c_str()); |
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36 | else |
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37 | TRACE("Deleting PolyData with NULL DataSet"); |
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38 | #endif |
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39 | } |
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40 | |
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41 | /** |
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42 | * \brief Create and initialize a VTK Prop to render a mesh |
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43 | */ |
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44 | void PolyData::initProp() |
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45 | { |
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46 | VtkGraphicsObject::initProp(); |
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47 | } |
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48 | |
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49 | /** |
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50 | * \brief Internal method to set up pipeline after a state change |
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51 | */ |
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52 | void PolyData::update() |
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53 | { |
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54 | if (_dataSet == NULL) { |
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55 | return; |
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56 | } |
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57 | |
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58 | if (_pdMapper == NULL) { |
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59 | _pdMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
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60 | _pdMapper->SetResolveCoincidentTopologyToPolygonOffset(); |
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61 | _pdMapper->ScalarVisibilityOff(); |
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62 | } |
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63 | |
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64 | vtkDataSet *ds = _dataSet->getVtkDataSet(); |
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65 | vtkPolyData *pd = vtkPolyData::SafeDownCast(ds); |
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66 | if (pd) { |
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67 | TRACE("Points: %d Verts: %d Lines: %d Polys: %d Strips: %d", |
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68 | pd->GetNumberOfPoints(), |
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69 | pd->GetNumberOfVerts(), |
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70 | pd->GetNumberOfLines(), |
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71 | pd->GetNumberOfPolys(), |
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72 | pd->GetNumberOfStrips()); |
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73 | // DataSet is a vtkPolyData |
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74 | if (pd->GetNumberOfLines() == 0 && |
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75 | pd->GetNumberOfPolys() == 0 && |
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76 | pd->GetNumberOfStrips() == 0) { |
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77 | // DataSet is a point cloud |
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78 | PrincipalPlane plane; |
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79 | double offset; |
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80 | if (_dataSet->numDimensions() < 2 || pd->GetNumberOfPoints() < 3) { |
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81 | // 0D or 1D or not enough points to mesh |
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82 | #ifdef USE_VTK6 |
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83 | _pdMapper->SetInputData(pd); |
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84 | #else |
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85 | _pdMapper->SetInput(pd); |
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86 | #endif |
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87 | } else if (_dataSet->is2D(&plane, &offset)) { |
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88 | vtkSmartPointer<vtkDelaunay2D> mesher = vtkSmartPointer<vtkDelaunay2D>::New(); |
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89 | if (plane == PLANE_ZY) { |
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90 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
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91 | trans->RotateWXYZ(90, 0, 1, 0); |
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92 | if (offset != 0.0) { |
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93 | trans->Translate(-offset, 0, 0); |
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94 | } |
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95 | mesher->SetTransform(trans); |
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96 | } else if (plane == PLANE_XZ) { |
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97 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
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98 | trans->RotateWXYZ(-90, 1, 0, 0); |
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99 | if (offset != 0.0) { |
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100 | trans->Translate(0, -offset, 0); |
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101 | } |
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102 | mesher->SetTransform(trans); |
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103 | } else if (offset != 0.0) { |
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104 | // XY with Z offset |
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105 | vtkSmartPointer<vtkTransform> trans = vtkSmartPointer<vtkTransform>::New(); |
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106 | trans->Translate(0, 0, -offset); |
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107 | mesher->SetTransform(trans); |
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108 | } |
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109 | #ifdef USE_VTK6 |
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110 | mesher->SetInputData(pd); |
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111 | #else |
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112 | mesher->SetInput(pd); |
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113 | #endif |
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114 | mesher->ReleaseDataFlagOn(); |
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115 | mesher->Update(); |
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116 | vtkPolyData *outpd = mesher->GetOutput(); |
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117 | TRACE("Delaunay2D Verts: %d Lines: %d Polys: %d Strips: %d", |
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118 | outpd->GetNumberOfVerts(), |
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119 | outpd->GetNumberOfLines(), |
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120 | outpd->GetNumberOfPolys(), |
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121 | outpd->GetNumberOfStrips()); |
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122 | if (outpd->GetNumberOfPolys() == 0) { |
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123 | WARN("Delaunay2D mesher failed"); |
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124 | #ifdef USE_VTK6 |
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125 | _pdMapper->SetInputData(pd); |
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126 | #else |
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127 | _pdMapper->SetInput(pd); |
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128 | #endif |
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129 | } else { |
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130 | _pdMapper->SetInputConnection(mesher->GetOutputPort()); |
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131 | } |
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132 | } else { |
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133 | vtkSmartPointer<vtkDelaunay3D> mesher = vtkSmartPointer<vtkDelaunay3D>::New(); |
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134 | #ifdef USE_VTK6 |
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135 | mesher->SetInputData(pd); |
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136 | #else |
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137 | mesher->SetInput(pd); |
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138 | #endif |
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139 | mesher->ReleaseDataFlagOn(); |
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140 | mesher->Update(); |
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141 | vtkUnstructuredGrid *grid = mesher->GetOutput(); |
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142 | TRACE("Delaunay3D Cells: %d", |
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143 | grid->GetNumberOfCells()); |
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144 | if (grid->GetNumberOfCells() == 0) { |
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145 | WARN("Delaunay3D mesher failed"); |
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146 | #ifdef USE_VTK6 |
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147 | _pdMapper->SetInputData(pd); |
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148 | #else |
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149 | _pdMapper->SetInput(pd); |
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150 | #endif |
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151 | } else { |
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152 | // Delaunay3D returns an UnstructuredGrid, so feed it |
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153 | // through a surface filter to get the grid boundary |
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154 | // as a PolyData |
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155 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
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156 | gf->UseStripsOn(); |
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157 | gf->SetInputConnection(mesher->GetOutputPort()); |
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158 | gf->ReleaseDataFlagOn(); |
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159 | _pdMapper->SetInputConnection(gf->GetOutputPort()); |
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160 | } |
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161 | } |
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162 | } else { |
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163 | // DataSet is a vtkPolyData with lines and/or polygons |
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164 | #ifdef USE_VTK6 |
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165 | _pdMapper->SetInputData(pd); |
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166 | #else |
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167 | _pdMapper->SetInput(pd); |
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168 | #endif |
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169 | } |
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170 | } else { |
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171 | // DataSet is NOT a vtkPolyData |
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172 | TRACE("DataSet is not a PolyData"); |
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173 | vtkSmartPointer<vtkDataSetSurfaceFilter> gf = vtkSmartPointer<vtkDataSetSurfaceFilter>::New(); |
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174 | gf->UseStripsOn(); |
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175 | #ifdef USE_VTK6 |
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176 | gf->SetInputData(ds); |
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177 | #else |
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178 | gf->SetInput(ds); |
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179 | #endif |
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180 | gf->ReleaseDataFlagOn(); |
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181 | _pdMapper->SetInputConnection(gf->GetOutputPort()); |
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182 | } |
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183 | |
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184 | initProp(); |
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185 | setVisibility(_dataSet->getVisibility()); |
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186 | getActor()->SetMapper(_pdMapper); |
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187 | _pdMapper->Update(); |
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188 | #ifdef WANT_TRACE |
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189 | double *b = getBounds(); |
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190 | TRACE("bounds: %g %g %g %g %g %g", b[0], b[1], b[2], b[3], b[4], b[5]); |
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191 | #endif |
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192 | } |
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193 | |
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194 | /** |
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195 | * \brief Set a group of world coordinate planes to clip rendering |
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196 | * |
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197 | * Passing NULL for planes will remove all cliping planes |
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198 | */ |
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199 | void PolyData::setClippingPlanes(vtkPlaneCollection *planes) |
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200 | { |
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201 | if (_pdMapper != NULL) { |
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202 | _pdMapper->SetClippingPlanes(planes); |
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203 | } |
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204 | } |
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205 | |
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