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annotate src/vtkplot.cpp @ 43:8aea477c7cf8

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Continue implementation of vtkplot class, only missing to move the tail of the pipeline to the Plot function.
author Jordi Gutiérrez Hermoso <jordigh@gmail.com>
date Mon, 15 Mar 2010 21:10:18 -0600
parents 3f8311cbf602
children 4134a0f2423d
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1 #include "include/vtkplot.hpp"
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3 #include <vtkPoints.h>
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4 #include <vtkPointData.h>
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5 #include <vtkDelaunay2D.h>
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6 #include <vtkLookupTable.h>
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8 #include <vtkPolyData.h>
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9 #include <vtkPolyDataNormals.h>
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10 #include <vtkPolyDataMapper.h>
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12 #include <vtkWarpScalar.h>
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14 #include <vtkCamera.h>
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15 #include <vtkActor.h>
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16 #include <vtkRenderWindow.h>
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17 #include <vtkRenderWindowInteractor.h>
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18 #include <vtkRenderer.h>
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20 #include <vtkInteractorStyleTerrain.h>
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22 #include <vtkSmartPointer.h>
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23 #include <vtkDoubleArray.h>
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25 #include <vtkGraphicsFactory.h>
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26 #include <vtkImagingFactory.h>
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27 #include <vtkWindowToImageFilter.h>
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28 #include <vtkPNGWriter.h>
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31 #include <vtkSmartPointer.h>
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32 #include <vtkObjectFactory.h>
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33 #include <vtkSphereSource.h>
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34 #include <vtkPolyDataMapper.h>
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35 #include <vtkActor.h>
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36 #include <vtkRenderWindow.h>
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37 #include <vtkRenderer.h>
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38 #include <vtkRenderWindowInteractor.h>
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39 #include <vtkProgrammableFilter.h>
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40 #include <vtkCommand.h>
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41 #include <vtkCamera.h>
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43 #include <string>
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44 #include <sstream>
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45 #include <iomanip>
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47 #include <boost/function.hpp>
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49 namespace kwantix{
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51 template<typename RBF>
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52 vtkplot::vtkplot(const interpolator<RBF>& u,
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53 bool offscreen_in)
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54 :hash(u.rbfs_hash), offscreen(offscreen)
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55 {
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56 if(u.thebvp -> get_domain() -> get_dimension() != 2)
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57 {
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58 badArgument exc;
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59 exc.reason =
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60 "Class vtkplot only works on interpolators whose "
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61 "domain lies in R^2";
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62 exc.line = __LINE__;
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63 exc.file = __FILE__;
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64 throw exc;
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65 }
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67 SetupPipeline(u, offscreen);
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68 }
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70 void vtkplot::set_offscreen(bool offscreen_in)
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71 {
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72 offscreen = offscreen_in;
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73 InitOffscreen();
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74 }
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76 template<typename RBF>
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77 void vtkplot::update_values(const interp_values& vals_in)
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78 {
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79 vals = vals_in;
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80 programmableFilter -> Modified();
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81 }
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82
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83 void vtkplot::trampoline(void* this_ptr)
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84 {
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85 vtkplot* instance = static_cast<vtkplot*>(this_ptr);
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86 instance -> AdjustPoints();
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87 }
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89 template<typename RBF>
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90 void vtkplot::SetupPipeline(const interpolator<RBF>& u)
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91 {
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93 vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
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94 vtkSmartPointer<vtkDoubleArray> scalars = vtkSmartPointer<vtkDoubleArray>::New();
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95
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96 for(auto i = u.thebvp -> get_domain() -> get_interior().begin();
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97 i != u.thebvp -> get_domain() -> get_interior().end(); i++)
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98 {
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99 double z = 0;
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100 vtkIdType idx = points -> InsertNextPoint( *i(1), *i(2), 0);
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101 scalars -> InsertTuple(idx, &z);
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102 }
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103 for(auto i = u.thebvp -> get_domain() -> get_boundary().begin();
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104 i != u.thebvp -> get_domain() -> get_boundary().end(); i++)
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105 {
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106 double z = 0;
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107 vtkIdType idx = points -> InsertNextPoint( *i(1), *i(2), 0);
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108 scalars -> InsertTuple(idx, &z);
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109 }
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111 //add the grid points to a polydata object
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112 vtkSmartPointer<vtkPolyData> polydata = vtkSmartPointer<vtkPolyData>::New();
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113 polydata->SetPoints(points);
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114 polydata->GetPointData() -> SetScalars(scalars);
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115
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116 //triangulate the grid points
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117 vtkSmartPointer<vtkDelaunay2D> delaunay
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118 = vtkSmartPointer<vtkDelaunay2D>::New();
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119 delaunay->SetInput(polydata);
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120 delaunay->Update();
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121
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122 InitOffscreen();
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123
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124 programmableFilter = vtkSmartPointer<vtkProgrammableFilter>::New();
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125 programmableFilter->SetInput(delaunay -> GetOutput());
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126 programmableFilter->SetExecuteMethod(trampoline, this);
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127
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128 //Normals for Gourad shading
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129 vtkSmartPointer<vtkPolyDataNormals> normals
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130 = vtkSmartPointer<vtkPolyDataNormals>::New();
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131 normals -> SetInputConnection(programmableFilter -> GetOutputPort() );
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132 normals -> SetFeatureAngle(60);
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133
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134 //Set the colours for the rendering
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135 vtkSmartPointer<vtkLookupTable> lut
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136 = vtkSmartPointer<vtkLookupTable>::New();
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137 lut -> SetHueRange(0.66667, 0.0);
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138 lut -> SetNumberOfColors(256);
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139 lut -> SetRampToLinear();
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140 lut -> Build();
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141
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142
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143 // map the contours to graphical primitives
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144 vtkSmartPointer<vtkPolyDataMapper> contMapper
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145 = vtkSmartPointer<vtkPolyDataMapper>::New();
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146 contMapper->SetInput(normals -> GetOutput() );
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147 contMapper->SetScalarRange(0,1);
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148 contMapper->SetLookupTable(lut);
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149 contMapper->ImmediateModeRenderingOn();
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150
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151
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152 // create an actor for the contours
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153 vtkSmartPointer<vtkActor> contActor
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154 = vtkSmartPointer<vtkActor>::New();
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155 contActor->SetMapper(contMapper);
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156
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157 // a renderer and render window
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158 ren1 = vtkSmartPointer<vtkRenderer>::New();
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159 renWin = vtkSmartPointer<vtkRenderWindow>::New();
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160 if(offscreen)
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161 {
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162 renWin->SetOffScreenRendering(1);
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163 }
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164 renWin->AddRenderer(ren1);
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165
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166 // an interactor
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167 vtkSmartPointer<vtkRenderWindowInteractor> iren
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168 = vtkSmartPointer<vtkRenderWindowInteractor>::New();
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169 iren->SetRenderWindow(renWin);
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170
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171 // Initialize must be called prior to creating timer events.
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172 iren->Initialize();
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173 iren->CreateRepeatingTimer(10);
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174
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175 // add the actors to the scene
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176 ren1->SetBackground(0.0,0.0,0.0);
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177 ren1->GetActiveCamera()->SetViewUp(0,0,1);
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178 ren1->GetActiveCamera()->SetPosition(1, 1, 1);
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179 ren1->GetActiveCamera()->SetParallelProjection(1);
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180 ren1->AddActor(contActor);
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181 ren1->ResetCamera();
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182
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183 if(offscreen)
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184 {
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185 for(size_t i = 0; i < 1000; i++)
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186 {
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187 using namespace std;
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188 string filename = "foo";
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189 stringstream ss; string i_str;
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190 ss << setw(4) << setfill('0') << i;
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191 ss >> i_str;
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192 filename += i_str + ".png";
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193
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194 // Write to file
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195 vtkSmartPointer<vtkWindowToImageFilter> windowToImageFilter =
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196 vtkSmartPointer<vtkWindowToImageFilter>::New();
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197 windowToImageFilter->SetInput(renWin);
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198 windowToImageFilter->Update();
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199
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200 vtkSmartPointer<vtkPNGWriter> writer
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201 = vtkSmartPointer<vtkPNGWriter>::New();
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202 writer->SetFileName(filename.c_str() );
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203 writer->SetInput(windowToImageFilter->GetOutput());
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204 writer->Write();
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205
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206 programmableFilter -> Modified();
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207 }
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208 }
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209 else
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210 {
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211
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212 // render an image (lights and cameras are created automatically)
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213 renWin->Render();
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214 //The style
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215 vtkSmartPointer<vtkInteractorStyleTerrain> terrain_style
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216 = vtkSmartPointer<vtkInteractorStyleTerrain>::New();
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217
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218 // Set the style
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219 iren -> SetInteractorStyle(terrain_style);
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220
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221 // begin mouse interaction
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222 iren->Start();
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223 }
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224 }
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225
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226 void vtkplot::InitOffscreen()
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227 {
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228 // Graphics Factory
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229 vtkSmartPointer<vtkGraphicsFactory> graphics_factory
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230 = vtkSmartPointer<vtkGraphicsFactory>::New();
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231 graphics_factory->SetOffScreenOnlyMode( offscreen );
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232 graphics_factory->SetUseMesaClasses( offscreen );
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233
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234 // Imaging Factory
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235 vtkSmartPointer<vtkImagingFactory> imaging_factory
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236 = vtkSmartPointer<vtkImagingFactory>::New();
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237 imaging_factory->SetUseMesaClasses( offscreen );
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238 }
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239
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240 void vtkplot::AdjustPoints()
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241 {
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242
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243 if(vals.get_hash() != hash)
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244 {
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245 badArgument exc;
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246 exc.reason =
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247 "Can't update vtkplot with data from a different "
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248 "interpolation domain.";
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249 exc.line = __LINE__;
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250 exc.file = __FILE__;
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251 throw exc;
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252 }
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253
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254 vtkPoints* inPts = programmableFilter->GetPolyDataInput()->GetPoints();
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255 vtkIdType numPts = inPts->GetNumberOfPoints();
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256 vtkSmartPointer<vtkPoints> newPts =
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257 vtkSmartPointer<vtkPoints>::New();
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258 newPts->SetNumberOfPoints(numPts);
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259
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260 vtkSmartPointer<vtkDoubleArray> newScalars
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261 = vtkSmartPointer<vtkDoubleArray>::New();
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262
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263 for(vtkIdType i = 0; i < numPts; i++)
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264 {
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265 double p[3];
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266 inPts -> GetPoint(i,p);
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267 p[2] = vals(i+1);
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268 newPts -> SetPoint(i,p);
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269 newScalars -> InsertTuple(i, &p[2]);
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270 }
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271
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272 programmableFilter->
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273 GetPolyDataOutput()->CopyStructure(programmableFilter->GetPolyDataInput());
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274
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275 programmableFilter->GetPolyDataOutput()->SetPoints(newPts);
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276 programmableFilter
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277 ->GetPolyDataOutput()
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278 ->GetPointData() -> SetScalars(newScalars);
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279 }
42
3f8311cbf602 Setup initial class for vtkplot; cleanup interpolator to use C++1x's auto and untabify
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280
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281 } //namespace kwantix
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282