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 | #include <cstring> |
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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 <vtkCharArray.h> |
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14 | #include <vtkDataSetReader.h> |
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15 | #include <vtkPolyData.h> |
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16 | #include <vtkStructuredPoints.h> |
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17 | #include <vtkStructuredGrid.h> |
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18 | #include <vtkRectilinearGrid.h> |
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19 | #include <vtkUnstructuredGrid.h> |
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20 | #include <vtkProperty.h> |
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21 | #include <vtkPointData.h> |
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22 | #include <vtkCellData.h> |
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23 | #include <vtkCell.h> |
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24 | #include <vtkLookupTable.h> |
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25 | |
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26 | #include "RpVtkDataSet.h" |
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27 | #include "Trace.h" |
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28 | |
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29 | using namespace Rappture::VtkVis; |
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30 | |
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31 | DataSet::DataSet(const std::string& name) : |
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32 | _name(name), |
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33 | _visible(true), |
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34 | _opacity(1), |
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35 | _cellSizeAverage(0) |
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36 | { |
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37 | _cellSizeRange[0] = -1; |
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38 | _cellSizeRange[1] = -1; |
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39 | } |
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40 | |
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41 | DataSet::~DataSet() |
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42 | { |
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43 | } |
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44 | |
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45 | /** |
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46 | * \brief Create and initialize a VTK Prop to render the outline |
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47 | */ |
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48 | void DataSet::initProp() |
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49 | { |
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50 | if (_prop == NULL) { |
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51 | _prop = vtkSmartPointer<vtkActor>::New(); |
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52 | vtkProperty *property = _prop->GetProperty(); |
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53 | property->EdgeVisibilityOff(); |
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54 | property->SetOpacity(_opacity); |
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55 | property->SetAmbient(.2); |
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56 | property->LightingOff(); |
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57 | _prop->SetVisibility((_visible ? 1 : 0)); |
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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 Create and initialize a wireframe outline |
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63 | */ |
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64 | void DataSet::showOutline(bool state) |
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65 | { |
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66 | if (state) { |
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67 | if (_outlineFilter == NULL) { |
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68 | _outlineFilter = vtkSmartPointer<vtkOutlineFilter>::New(); |
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69 | _outlineFilter->SetInput(_dataSet); |
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70 | } |
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71 | if (_outlineMapper == NULL) { |
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72 | _outlineMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); |
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73 | _outlineMapper->SetInputConnection(_outlineFilter->GetOutputPort()); |
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74 | } |
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75 | initProp(); |
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76 | _prop->SetMapper(_outlineMapper); |
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77 | } else { |
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78 | if (_prop != NULL) { |
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79 | _prop->SetMapper(NULL); |
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80 | } |
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81 | if (_outlineMapper != NULL) { |
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82 | _outlineMapper = NULL; |
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83 | } |
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84 | if (_outlineFilter != NULL) { |
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85 | _outlineFilter = NULL; |
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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 | /** |
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91 | * \brief Set color of outline bounding box |
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92 | */ |
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93 | void DataSet::setOutlineColor(float color[3]) |
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94 | { |
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95 | if (_prop == NULL) { |
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96 | initProp(); |
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97 | } |
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98 | _prop->GetProperty()->SetColor(color[0], color[1], color[2]); |
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99 | } |
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100 | |
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101 | /** |
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102 | * \brief Set opacity of DataSet outline |
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103 | * |
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104 | * This method is used for record-keeping and opacity of the |
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105 | * DataSet bounds outline. The renderer controls opacity |
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106 | * of other related graphics objects. |
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107 | */ |
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108 | void DataSet::setOpacity(double opacity) |
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109 | { |
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110 | _opacity = opacity; |
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111 | if (_prop != NULL) { |
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112 | _prop->GetProperty()->SetOpacity(opacity); |
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113 | } |
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114 | } |
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115 | |
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116 | /** |
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117 | * \brief Set visibility flag in DataSet |
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118 | * |
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119 | * This method is used for record-keeping and visibility of the |
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120 | * DataSet bounds outline. The renderer controls visibility |
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121 | * of other related graphics objects. |
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122 | */ |
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123 | void DataSet::setVisibility(bool state) |
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124 | { |
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125 | _visible = state; |
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126 | if (_prop != NULL) { |
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127 | _prop->SetVisibility((state ? 1 : 0)); |
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128 | } |
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129 | } |
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130 | |
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131 | /** |
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132 | * \brief Get visibility flag in DataSet |
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133 | * |
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134 | * This method is used for record-keeping. The renderer controls |
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135 | * the visibility of related graphics objects. |
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136 | */ |
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137 | bool DataSet::getVisibility() const |
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138 | { |
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139 | return _visible; |
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140 | } |
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141 | |
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142 | /** |
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143 | * \brief Read a VTK data file |
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144 | */ |
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145 | bool DataSet::setDataFile(const char *filename) |
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146 | { |
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147 | vtkSmartPointer<vtkDataSetReader> reader = vtkSmartPointer<vtkDataSetReader>::New(); |
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148 | |
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149 | #if defined(WANT_TRACE) && defined(DEBUG) |
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150 | reader->DebugOn(); |
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151 | #endif |
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152 | |
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153 | reader->SetFileName(filename); |
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154 | reader->ReadAllNormalsOn(); |
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155 | //reader->ReadAllTCoordsOn(); |
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156 | reader->ReadAllScalarsOn(); |
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157 | //reader->ReadAllColorScalarsOn(); |
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158 | reader->ReadAllVectorsOn(); |
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159 | //reader->ReadAllTensorsOn(); |
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160 | reader->ReadAllFieldsOn(); |
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161 | |
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162 | return setData(reader); |
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163 | } |
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164 | |
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165 | /** |
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166 | * \brief Read a VTK data file from a memory buffer |
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167 | */ |
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168 | bool DataSet::setData(char *data, int nbytes) |
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169 | { |
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170 | vtkSmartPointer<vtkDataSetReader> reader = vtkSmartPointer<vtkDataSetReader>::New(); |
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171 | vtkSmartPointer<vtkCharArray> dataSetString = vtkSmartPointer<vtkCharArray>::New(); |
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172 | |
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173 | #if defined(WANT_TRACE) && defined(DEBUG) |
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174 | reader->DebugOn(); |
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175 | dataSetString->DebugOn(); |
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176 | #endif |
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177 | |
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178 | dataSetString->SetArray(data, nbytes, 1); |
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179 | reader->SetInputArray(dataSetString); |
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180 | reader->ReadFromInputStringOn(); |
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181 | reader->ReadAllNormalsOn(); |
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182 | //reader->ReadAllTCoordsOn(); |
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183 | reader->ReadAllScalarsOn(); |
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184 | //reader->ReadAllColorScalarsOn(); |
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185 | reader->ReadAllVectorsOn(); |
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186 | //reader->ReadAllTensorsOn(); |
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187 | reader->ReadAllFieldsOn(); |
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188 | |
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189 | return setData(reader); |
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190 | } |
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191 | |
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192 | void DataSet::print() const |
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193 | { |
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194 | TRACE("DataSet class: %s", _dataSet->GetClassName()); |
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195 | |
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196 | TRACE("DataSet memory: %g MiB", _dataSet->GetActualMemorySize()/1024.); |
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197 | |
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198 | double bounds[6]; |
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199 | getBounds(bounds); |
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200 | |
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201 | // Topology |
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202 | TRACE("DataSet bounds: %g %g %g %g %g %g", |
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203 | bounds[0], bounds[1], |
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204 | bounds[2], bounds[3], |
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205 | bounds[4], bounds[5]); |
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206 | TRACE("Points: %d Cells: %d", _dataSet->GetNumberOfPoints(), _dataSet->GetNumberOfCells()); |
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207 | |
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208 | double dataRange[2]; |
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209 | if (_dataSet->GetPointData() != NULL) { |
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210 | TRACE("PointData arrays: %d", _dataSet->GetPointData()->GetNumberOfArrays()); |
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211 | for (int i = 0; i < _dataSet->GetPointData()->GetNumberOfArrays(); i++) { |
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212 | _dataSet->GetPointData()->GetArray(i)->GetRange(dataRange, -1); |
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213 | TRACE("PointData[%d]: '%s' comp:%d, (%g,%g)", i, |
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214 | _dataSet->GetPointData()->GetArrayName(i), |
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215 | _dataSet->GetPointData()->GetArray(i)->GetNumberOfComponents(), |
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216 | dataRange[0], dataRange[1]); |
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217 | } |
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218 | } |
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219 | if (_dataSet->GetCellData() != NULL) { |
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220 | TRACE("CellData arrays: %d", _dataSet->GetCellData()->GetNumberOfArrays()); |
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221 | for (int i = 0; i < _dataSet->GetCellData()->GetNumberOfArrays(); i++) { |
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222 | _dataSet->GetCellData()->GetArray(i)->GetRange(dataRange, -1); |
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223 | TRACE("CellData[%d]: '%s' comp:%d, (%g,%g)", i, |
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224 | _dataSet->GetCellData()->GetArrayName(i), |
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225 | _dataSet->GetCellData()->GetArray(i)->GetNumberOfComponents(), |
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226 | dataRange[0], dataRange[1]); |
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227 | } |
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228 | } |
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229 | if (_dataSet->GetFieldData() != NULL) { |
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230 | TRACE("FieldData arrays: %d", _dataSet->GetFieldData()->GetNumberOfArrays()); |
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231 | for (int i = 0; i < _dataSet->GetFieldData()->GetNumberOfArrays(); i++) { |
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232 | _dataSet->GetFieldData()->GetArray(i)->GetRange(dataRange, -1); |
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233 | TRACE("FieldData[%d]: '%s' comp:%d, tuples:%d (%g,%g)", i, |
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234 | _dataSet->GetFieldData()->GetArrayName(i), |
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235 | _dataSet->GetFieldData()->GetArray(i)->GetNumberOfComponents(), |
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236 | _dataSet->GetFieldData()->GetArray(i)->GetNumberOfTuples(), |
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237 | dataRange[0], dataRange[1]); |
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238 | } |
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239 | } |
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240 | } |
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241 | |
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242 | void DataSet::setDefaultArrays() |
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243 | { |
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244 | if (_dataSet->GetPointData() != NULL && |
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245 | _dataSet->GetPointData()->GetScalars() == NULL && |
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246 | _dataSet->GetPointData()->GetNumberOfArrays() > 0) { |
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247 | for (int i = 0; i < _dataSet->GetPointData()->GetNumberOfArrays(); i++) { |
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248 | if (_dataSet->GetPointData()->GetArray(i)->GetNumberOfComponents() == 1) { |
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249 | TRACE("Setting point scalars to '%s'", _dataSet->GetPointData()->GetArrayName(i)); |
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250 | _dataSet->GetPointData()->SetActiveScalars(_dataSet->GetPointData()->GetArrayName(i)); |
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251 | break; |
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252 | } |
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253 | } |
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254 | } |
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255 | if (_dataSet->GetPointData() != NULL && |
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256 | _dataSet->GetPointData()->GetVectors() == NULL && |
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257 | _dataSet->GetPointData()->GetNumberOfArrays() > 0) { |
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258 | for (int i = 0; i < _dataSet->GetPointData()->GetNumberOfArrays(); i++) { |
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259 | if (_dataSet->GetPointData()->GetArray(i)->GetNumberOfComponents() == 3) { |
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260 | TRACE("Setting point vectors to '%s'", _dataSet->GetPointData()->GetArrayName(i)); |
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261 | _dataSet->GetPointData()->SetActiveVectors(_dataSet->GetPointData()->GetArrayName(i)); |
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262 | break; |
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263 | } |
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264 | } |
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265 | } |
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266 | if (_dataSet->GetCellData() != NULL && |
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267 | _dataSet->GetCellData()->GetScalars() == NULL && |
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268 | _dataSet->GetCellData()->GetNumberOfArrays() > 0) { |
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269 | for (int i = 0; i < _dataSet->GetCellData()->GetNumberOfArrays(); i++) { |
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270 | if (_dataSet->GetCellData()->GetArray(i)->GetNumberOfComponents() == 1) { |
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271 | TRACE("Setting cell scalars to '%s'", _dataSet->GetCellData()->GetArrayName(i)); |
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272 | _dataSet->GetCellData()->SetActiveScalars(_dataSet->GetCellData()->GetArrayName(i)); |
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273 | break; |
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274 | } |
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275 | } |
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276 | } |
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277 | if (_dataSet->GetCellData() != NULL && |
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278 | _dataSet->GetCellData()->GetVectors() == NULL && |
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279 | _dataSet->GetCellData()->GetNumberOfArrays() > 0) { |
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280 | for (int i = 0; i < _dataSet->GetCellData()->GetNumberOfArrays(); i++) { |
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281 | if (_dataSet->GetCellData()->GetArray(i)->GetNumberOfComponents() == 3) { |
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282 | TRACE("Setting cell vectors to '%s'", _dataSet->GetCellData()->GetArrayName(i)); |
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283 | _dataSet->GetCellData()->SetActiveVectors(_dataSet->GetCellData()->GetArrayName(i)); |
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284 | break; |
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285 | } |
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286 | } |
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287 | } |
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288 | } |
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289 | |
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290 | /** |
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291 | * \brief Read dataset using supplied reader |
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292 | * |
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293 | * Pipeline information is removed from the resulting |
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294 | * vtkDataSet, so that the reader and its data can be |
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295 | * released |
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296 | */ |
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297 | bool DataSet::setData(vtkDataSetReader *reader) |
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298 | { |
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299 | TRACE("Enter"); |
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300 | // Force reading data set |
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301 | reader->SetLookupTableName(""); |
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302 | reader->Update(); |
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303 | |
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304 | _dataSet = reader->GetOutput(); |
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305 | _dataSet->SetPipelineInformation(NULL); |
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306 | |
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307 | if (_dataSet->GetPointData() != NULL && |
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308 | _dataSet->GetPointData()->GetScalars() != NULL && |
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309 | _dataSet->GetPointData()->GetScalars()->GetLookupTable() != NULL) { |
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310 | ERROR("No lookup table should be specified in DataSets"); |
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311 | } |
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312 | |
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313 | setDefaultArrays(); |
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314 | |
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315 | #ifdef WANT_TRACE |
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316 | print(); |
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317 | #endif |
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318 | TRACE("Leave"); |
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319 | return true; |
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320 | } |
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321 | |
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322 | /** |
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323 | * \brief Set DataSet from existing vtkDataSet object |
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324 | * |
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325 | * Pipeline information is removed from the supplied vtkDataSet |
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326 | */ |
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327 | bool DataSet::setData(vtkDataSet *ds) |
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328 | { |
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329 | _dataSet = ds; |
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330 | _dataSet->SetPipelineInformation(NULL); |
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331 | |
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332 | if (_dataSet->GetPointData() != NULL && |
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333 | _dataSet->GetPointData()->GetScalars() != NULL && |
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334 | _dataSet->GetPointData()->GetScalars()->GetLookupTable() != NULL) { |
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335 | ERROR("No lookup table should be specified in DataSets"); |
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336 | } |
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337 | |
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338 | setDefaultArrays(); |
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339 | |
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340 | #ifdef WANT_TRACE |
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341 | print(); |
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342 | #endif |
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343 | return true; |
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344 | } |
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345 | |
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346 | /** |
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347 | * \brief Copy an existing vtkDataSet object |
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348 | * |
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349 | * Pipeline information is not copied from the supplied vtkDataSet |
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350 | * into this DataSet, but pipeline information in the supplied |
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351 | * vtkDataSet is not removed |
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352 | */ |
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353 | vtkDataSet *DataSet::copyData(vtkDataSet *ds) |
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354 | { |
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355 | if (vtkPolyData::SafeDownCast(ds) != NULL) { |
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356 | _dataSet = vtkSmartPointer<vtkPolyData>::New(); |
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357 | _dataSet->DeepCopy(vtkPolyData::SafeDownCast(ds)); |
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358 | } else if (vtkStructuredPoints::SafeDownCast(ds) != NULL) { |
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359 | _dataSet = vtkSmartPointer<vtkStructuredPoints>::New(); |
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360 | _dataSet->DeepCopy(vtkStructuredPoints::SafeDownCast(ds)); |
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361 | } else if (vtkStructuredGrid::SafeDownCast(ds) != NULL) { |
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362 | _dataSet = vtkSmartPointer<vtkStructuredGrid>::New(); |
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363 | _dataSet->DeepCopy(vtkStructuredGrid::SafeDownCast(ds)); |
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364 | } else if (vtkRectilinearGrid::SafeDownCast(ds) != NULL) { |
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365 | _dataSet = vtkSmartPointer<vtkRectilinearGrid>::New(); |
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366 | _dataSet->DeepCopy(vtkRectilinearGrid::SafeDownCast(ds)); |
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367 | } else if (vtkUnstructuredGrid::SafeDownCast(ds) != NULL) { |
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368 | _dataSet = vtkSmartPointer<vtkUnstructuredGrid>::New(); |
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369 | _dataSet->DeepCopy(vtkUnstructuredGrid::SafeDownCast(ds)); |
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370 | } else { |
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371 | ERROR("Unknown data type"); |
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372 | return NULL; |
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373 | } |
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374 | |
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375 | #ifdef WANT_TRACE |
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376 | print(); |
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377 | #endif |
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378 | return _dataSet; |
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379 | } |
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380 | |
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381 | /** |
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382 | * \brief Does DataSet lie in the XY plane (z = 0) |
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383 | */ |
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384 | bool DataSet::isXY() const |
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385 | { |
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386 | double bounds[6]; |
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387 | getBounds(bounds); |
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388 | return (bounds[4] == 0. && bounds[4] == bounds[5]); |
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389 | } |
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390 | |
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391 | /** |
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392 | * \brief Returns the dimensionality of the AABB |
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393 | */ |
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394 | int DataSet::numDimensions() const |
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395 | { |
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396 | double bounds[6]; |
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397 | getBounds(bounds); |
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398 | int numDims = 0; |
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399 | if (bounds[0] != bounds[1]) |
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400 | numDims++; |
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401 | if (bounds[2] != bounds[3]) |
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402 | numDims++; |
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403 | if (bounds[4] != bounds[5]) |
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404 | numDims++; |
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405 | |
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406 | return numDims; |
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407 | } |
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408 | |
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409 | /** |
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410 | * \brief Determines if DataSet lies in a principal axis plane |
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411 | * and if so, returns the plane normal and offset from origin |
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412 | */ |
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413 | bool DataSet::is2D(DataSet::PrincipalPlane *plane, double *offset) const |
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414 | { |
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415 | double bounds[6]; |
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416 | getBounds(bounds); |
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417 | if (bounds[4] == bounds[5]) { |
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418 | // Z = 0, XY plane |
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419 | if (plane != NULL) { |
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420 | *plane = PLANE_XY; |
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421 | } |
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422 | if (offset != NULL) |
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423 | *offset = bounds[4]; |
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424 | return true; |
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425 | } else if (bounds[0] == bounds[1]) { |
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426 | // X = 0, ZY plane |
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427 | if (plane != NULL) { |
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428 | *plane = PLANE_ZY; |
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429 | } |
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430 | if (offset != NULL) |
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431 | *offset = bounds[0]; |
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432 | return true; |
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433 | } else if (bounds[2] == bounds[3]) { |
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434 | // Y = 0, XZ plane |
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435 | if (plane != NULL) { |
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436 | *plane = PLANE_XZ; |
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437 | } |
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438 | if (offset != NULL) |
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439 | *offset = bounds[2]; |
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440 | return true; |
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441 | } |
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442 | return false; |
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443 | } |
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444 | |
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445 | /** |
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446 | * \brief Determines a principal plane with the |
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447 | * largest two dimensions of the AABB |
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448 | */ |
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449 | DataSet::PrincipalPlane DataSet::principalPlane() const |
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450 | { |
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451 | double bounds[6]; |
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452 | getBounds(bounds); |
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453 | double xlen = bounds[1] - bounds[0]; |
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454 | double ylen = bounds[3] - bounds[2]; |
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455 | double zlen = bounds[5] - bounds[4]; |
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456 | if (zlen <= xlen && zlen <= ylen) { |
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457 | return PLANE_XY; |
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458 | } else if (xlen <= ylen && xlen <= zlen) { |
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459 | return PLANE_ZY; |
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460 | } else { |
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461 | return PLANE_XZ; |
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462 | } |
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463 | } |
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464 | |
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465 | /** |
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466 | * \brief Get the name/id of this dataset |
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467 | */ |
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468 | const std::string& DataSet::getName() const |
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469 | { |
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470 | return _name; |
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471 | } |
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472 | |
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473 | /** |
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474 | * \brief Get the underlying VTK DataSet object |
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475 | */ |
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476 | vtkDataSet *DataSet::getVtkDataSet() |
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477 | { |
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478 | return _dataSet; |
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479 | } |
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480 | |
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481 | /** |
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482 | * \brief Get the underlying VTK DataSet subclass class name |
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483 | */ |
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484 | const char *DataSet::getVtkType() const |
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485 | { |
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486 | return _dataSet->GetClassName(); |
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487 | } |
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488 | |
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489 | /** |
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490 | * \brief Set the ative scalar array to the named field |
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491 | */ |
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492 | bool DataSet::setActiveScalars(const char *name) |
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493 | { |
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494 | bool found = false; |
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495 | if (_dataSet != NULL) { |
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496 | if (_dataSet->GetPointData() != NULL) { |
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497 | if (_dataSet->GetPointData()->SetActiveScalars(name) >= 0) { |
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498 | TRACE("Set active point data scalars to %s", name); |
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499 | found = true; |
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500 | } |
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501 | } |
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502 | if (_dataSet->GetCellData() != NULL) { |
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503 | if (_dataSet->GetCellData()->SetActiveScalars(name) >= 0) { |
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504 | TRACE("Set active cell data scalars to %s", name); |
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505 | found = true; |
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506 | } |
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507 | } |
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508 | } |
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509 | #ifdef WANT_TRACE |
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510 | if (_dataSet->GetPointData() != NULL) { |
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511 | if (_dataSet->GetPointData()->GetScalars() != NULL) { |
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512 | TRACE("Point data scalars: %s", _dataSet->GetPointData()->GetScalars()->GetName()); |
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513 | } else { |
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514 | TRACE("NULL point data scalars"); |
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515 | } |
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516 | } |
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517 | if (_dataSet->GetCellData() != NULL) { |
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518 | if (_dataSet->GetCellData()->GetScalars() != NULL) { |
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519 | TRACE("Cell data scalars: %s", _dataSet->GetCellData()->GetScalars()->GetName()); |
---|
520 | } else { |
---|
521 | TRACE("NULL cell data scalars"); |
---|
522 | } |
---|
523 | } |
---|
524 | #endif |
---|
525 | return found; |
---|
526 | } |
---|
527 | |
---|
528 | /** |
---|
529 | * \brief Get the active scalar array field name |
---|
530 | */ |
---|
531 | const char *DataSet::getActiveScalarsName() |
---|
532 | { |
---|
533 | if (_dataSet != NULL) { |
---|
534 | if (_dataSet->GetPointData() != NULL && |
---|
535 | _dataSet->GetPointData()->GetScalars() != NULL) { |
---|
536 | return _dataSet->GetPointData()->GetScalars()->GetName(); |
---|
537 | } |
---|
538 | TRACE("No point scalars"); |
---|
539 | if (_dataSet->GetCellData() != NULL && |
---|
540 | _dataSet->GetCellData()->GetScalars() != NULL) { |
---|
541 | return _dataSet->GetCellData()->GetScalars()->GetName(); |
---|
542 | } |
---|
543 | TRACE("No cell scalars"); |
---|
544 | } |
---|
545 | return NULL; |
---|
546 | } |
---|
547 | |
---|
548 | /** |
---|
549 | * \brief Set the ative vector array to the named field |
---|
550 | */ |
---|
551 | bool DataSet::setActiveVectors(const char *name) |
---|
552 | { |
---|
553 | bool found = false; |
---|
554 | if (_dataSet != NULL) { |
---|
555 | if (_dataSet->GetPointData() != NULL) { |
---|
556 | if (_dataSet->GetPointData()->SetActiveVectors(name) >= 0) { |
---|
557 | TRACE("Set active point data vectors to %s", name); |
---|
558 | found = true; |
---|
559 | } |
---|
560 | } |
---|
561 | if (_dataSet->GetCellData() != NULL) { |
---|
562 | if (_dataSet->GetCellData()->SetActiveVectors(name) >= 0) { |
---|
563 | TRACE("Set active cell data vectors to %s", name); |
---|
564 | found = true; |
---|
565 | } |
---|
566 | } |
---|
567 | } |
---|
568 | |
---|
569 | return found; |
---|
570 | } |
---|
571 | |
---|
572 | /** |
---|
573 | * \brief Get the active vector array field name |
---|
574 | */ |
---|
575 | const char *DataSet::getActiveVectorsName() |
---|
576 | { |
---|
577 | if (_dataSet != NULL) { |
---|
578 | if (_dataSet->GetPointData() != NULL && |
---|
579 | _dataSet->GetPointData()->GetVectors() != NULL) { |
---|
580 | return _dataSet->GetPointData()->GetVectors()->GetName(); |
---|
581 | } |
---|
582 | TRACE("No point vectors"); |
---|
583 | if (_dataSet->GetCellData() != NULL && |
---|
584 | _dataSet->GetCellData()->GetVectors() != NULL) { |
---|
585 | return _dataSet->GetCellData()->GetVectors()->GetName(); |
---|
586 | } |
---|
587 | TRACE("No cell vectors"); |
---|
588 | } |
---|
589 | return NULL; |
---|
590 | } |
---|
591 | |
---|
592 | /** |
---|
593 | * \brief Get the range of scalar values in the DataSet |
---|
594 | */ |
---|
595 | void DataSet::getScalarRange(double minmax[2]) const |
---|
596 | { |
---|
597 | if (_dataSet == NULL) |
---|
598 | return; |
---|
599 | if (_dataSet->GetPointData() != NULL && |
---|
600 | _dataSet->GetPointData()->GetScalars() != NULL) { |
---|
601 | _dataSet->GetPointData()->GetScalars()->GetRange(minmax, -1); |
---|
602 | } else if (_dataSet->GetCellData() != NULL && |
---|
603 | _dataSet->GetCellData()->GetScalars() != NULL) { |
---|
604 | _dataSet->GetCellData()->GetScalars()->GetRange(minmax, -1); |
---|
605 | } |
---|
606 | } |
---|
607 | |
---|
608 | /** |
---|
609 | * \brief Get the range of a vector component in the DataSet |
---|
610 | * |
---|
611 | * \param[out] minmax The data range |
---|
612 | * \param[in] component The field component, -1 means magnitude |
---|
613 | */ |
---|
614 | void DataSet::getVectorRange(double minmax[2], int component) const |
---|
615 | { |
---|
616 | if (_dataSet == NULL) |
---|
617 | return; |
---|
618 | if (_dataSet->GetPointData() != NULL && |
---|
619 | _dataSet->GetPointData()->GetVectors() != NULL) { |
---|
620 | _dataSet->GetPointData()->GetVectors()->GetRange(minmax, component); |
---|
621 | } else if (_dataSet->GetCellData() != NULL && |
---|
622 | _dataSet->GetCellData()->GetVectors() != NULL) { |
---|
623 | _dataSet->GetCellData()->GetVectors()->GetRange(minmax, component); |
---|
624 | } |
---|
625 | } |
---|
626 | |
---|
627 | /** |
---|
628 | * \brief Get the range of values for the named field in the DataSet |
---|
629 | * |
---|
630 | * \param[out] minmax The data range |
---|
631 | * \param[in] fieldName The array name |
---|
632 | * \param[in] component The field component, -1 means magnitude |
---|
633 | */ |
---|
634 | void DataSet::getDataRange(double minmax[2], const char *fieldName, int component) const |
---|
635 | { |
---|
636 | if (_dataSet == NULL) |
---|
637 | return; |
---|
638 | if (_dataSet->GetPointData() != NULL && |
---|
639 | _dataSet->GetPointData()->GetArray(fieldName) != NULL) { |
---|
640 | _dataSet->GetPointData()->GetArray(fieldName)->GetRange(minmax, component); |
---|
641 | } else if (_dataSet->GetCellData() != NULL && |
---|
642 | _dataSet->GetCellData()->GetArray(fieldName) != NULL) { |
---|
643 | _dataSet->GetCellData()->GetArray(fieldName)->GetRange(minmax, component); |
---|
644 | } else if (_dataSet->GetFieldData() != NULL && |
---|
645 | _dataSet->GetFieldData()->GetArray(fieldName) != NULL) { |
---|
646 | _dataSet->GetFieldData()->GetArray(fieldName)->GetRange(minmax, component); |
---|
647 | } |
---|
648 | } |
---|
649 | |
---|
650 | /** |
---|
651 | * \brief Get the bounds the DataSet |
---|
652 | */ |
---|
653 | void DataSet::getBounds(double bounds[6]) const |
---|
654 | { |
---|
655 | _dataSet->GetBounds(bounds); |
---|
656 | } |
---|
657 | |
---|
658 | /** |
---|
659 | * \brief Get the range of cell AABB diagonal lengths in the DataSet |
---|
660 | */ |
---|
661 | void DataSet::getCellSizeRange(double minmax[2], double *average) |
---|
662 | { |
---|
663 | if (_dataSet == NULL || |
---|
664 | _dataSet->GetNumberOfCells() < 1) { |
---|
665 | minmax[0] = 1; |
---|
666 | minmax[1] = 1; |
---|
667 | *average = 1; |
---|
668 | return; |
---|
669 | } |
---|
670 | |
---|
671 | if (_cellSizeRange[0] >= 0.0) { |
---|
672 | minmax[0] = _cellSizeRange[0]; |
---|
673 | minmax[1] = _cellSizeRange[1]; |
---|
674 | *average = _cellSizeAverage; |
---|
675 | return; |
---|
676 | } |
---|
677 | |
---|
678 | minmax[0] = DBL_MAX; |
---|
679 | minmax[1] = -DBL_MAX; |
---|
680 | |
---|
681 | *average = 0; |
---|
682 | for (int i = 0; i < _dataSet->GetNumberOfCells(); i++) { |
---|
683 | double length2 = _dataSet->GetCell(i)->GetLength2(); |
---|
684 | if (length2 < minmax[0]) |
---|
685 | minmax[0] = length2; |
---|
686 | if (length2 > minmax[1]) |
---|
687 | minmax[1] = length2; |
---|
688 | *average += length2; |
---|
689 | } |
---|
690 | if (minmax[0] == DBL_MAX) |
---|
691 | minmax[0] = 1; |
---|
692 | if (minmax[1] == -DBL_MAX) |
---|
693 | minmax[1] = 1; |
---|
694 | |
---|
695 | minmax[0] = sqrt(minmax[0]); |
---|
696 | minmax[1] = sqrt(minmax[1]); |
---|
697 | *average = sqrt(*average/((double)_dataSet->GetNumberOfCells())); |
---|
698 | _cellSizeRange[0] = minmax[0]; |
---|
699 | _cellSizeRange[1] = minmax[1]; |
---|
700 | _cellSizeAverage = *average; |
---|
701 | } |
---|
702 | |
---|
703 | /** |
---|
704 | * \brief Get nearest data value given world coordinates x,y,z |
---|
705 | * |
---|
706 | * Note: no interpolation is performed on data |
---|
707 | * |
---|
708 | * \return the value of the nearest point or 0 if no scalar data available |
---|
709 | */ |
---|
710 | bool DataSet::getScalarValue(double x, double y, double z, double *value) const |
---|
711 | { |
---|
712 | if (_dataSet == NULL) |
---|
713 | return false; |
---|
714 | if (_dataSet->GetPointData() == NULL || |
---|
715 | _dataSet->GetPointData()->GetScalars() == NULL) { |
---|
716 | return false; |
---|
717 | } |
---|
718 | vtkIdType pt = _dataSet->FindPoint(x, y, z); |
---|
719 | if (pt < 0) |
---|
720 | return false; |
---|
721 | *value = _dataSet->GetPointData()->GetScalars()->GetComponent(pt, 0); |
---|
722 | return true; |
---|
723 | } |
---|
724 | |
---|
725 | /** |
---|
726 | * \brief Get nearest vector data value given world coordinates x,y,z |
---|
727 | * |
---|
728 | * Note: no interpolation is performed on data |
---|
729 | * |
---|
730 | * \param[in] x World x coordinate to probe |
---|
731 | * \param[in] y World y coordinate to probe |
---|
732 | * \param[in] z World z coordinate to probe |
---|
733 | * \param[out] vector On success, contains the data values |
---|
734 | * \return boolean indicating success or failure |
---|
735 | */ |
---|
736 | bool DataSet::getVectorValue(double x, double y, double z, double vector[3]) const |
---|
737 | { |
---|
738 | if (_dataSet == NULL) |
---|
739 | return false; |
---|
740 | if (_dataSet->GetPointData() == NULL || |
---|
741 | _dataSet->GetPointData()->GetVectors() == NULL) { |
---|
742 | return false; |
---|
743 | } |
---|
744 | vtkIdType pt = _dataSet->FindPoint(x, y, z); |
---|
745 | if (pt < 0) |
---|
746 | return false; |
---|
747 | assert(_dataSet->GetPointData()->GetVectors()->GetNumberOfComponents() == 3); |
---|
748 | _dataSet->GetPointData()->GetVectors()->GetTuple(pt, vector); |
---|
749 | return true; |
---|
750 | } |
---|