File size: 3,919 Bytes
614b8d4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 | #include <vtkCamera.h>
#include <vtkColorTransferFunction.h>
#include <vtkGPUVolumeRayCastMapper.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkPiecewiseFunction.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkStructuredPointsReader.h>
#include <vtkVolume.h>
#include <vtkVolumeProperty.h>
#include <vtkPolyDataMapper.h>
#include <vtkPNGWriter.h>
#include <vtkWindowToImageFilter.h>
#include <vtkMultiThreader.h>
#define OTF_ARGON()\
opacityTransferFunction->AddPoint(0.0, 0.0);\
opacityTransferFunction->AddPoint(1.0, 1.0);
#define CTF_ARGON()\
colorTransferFunction->AddRGBPoint(0.0, 0.23, 0.29, 0.75);\
colorTransferFunction->AddRGBPoint(0.5, 0.87, 0.87, 0.87);\
colorTransferFunction->AddRGBPoint(1.0, 0.71, 0.02, 0.15);
int main(int argc, char* argv[])
{
vtkMultiThreader::SetGlobalMaximumNumberOfThreads(1);
if (argc < 2)
{
std::cout << "Usage: " << argv[0] << " dataset.vtk" << std::endl;
return EXIT_FAILURE;
}
// Create the standard renderer, render window and interactor
vtkNew<vtkRenderer> ren1;
vtkNew<vtkRenderWindow> renWin;
renWin->AddRenderer(ren1);
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin);
// Create the reader for the data
vtkNew<vtkStructuredPointsReader> reader;
reader->SetFileName(argv[1]);
reader->Update();
// Create transfer mapping scalar value to opacity
vtkSmartPointer<vtkPiecewiseFunction> opacityTransferFunction = vtkSmartPointer<vtkPiecewiseFunction>::New();
OTF_ARGON();
// Create transfer mapping scalar value to color
vtkNew<vtkColorTransferFunction> colorTransferFunction;
CTF_ARGON()
// The property describes how the data will look
vtkNew<vtkVolumeProperty> volumeProperty;
volumeProperty->SetColor(colorTransferFunction);
volumeProperty->SetScalarOpacity(opacityTransferFunction);
volumeProperty->SetInterpolationTypeToLinear();
// The mapper / ray cast function know how to render the data
vtkNew<vtkGPUVolumeRayCastMapper> volumeMapper;
volumeMapper->SetInputConnection(reader->GetOutputPort());
volumeMapper->SetSampleDistance(0.1);
volumeMapper->SetBlendModeToComposite();
// The volume holds the mapper and the property
vtkNew<vtkVolume> volume;
volume->SetMapper(volumeMapper);
volume->SetProperty(volumeProperty);
ren1->AddVolume(volume);
ren1->SetBackground(1, 1, 1);
ren1->ResetCameraClippingRange();
ren1->ResetCamera();
// set camera parameters from arguments
double position_x = 0;
double position_y = 450;
double position_z = 0;
double focal_point_x = 0;
double focal_point_y = 0;
double focal_point_z = -15;
double view_up_x = 0;
double view_up_y = 0;
double view_up_z = -1;
ren1->GetActiveCamera()->SetPosition(position_x,
position_y,
position_z);
ren1->GetActiveCamera()->SetFocalPoint(focal_point_x,
focal_point_y,
focal_point_z);
ren1->GetActiveCamera()->SetViewUp(view_up_x,
view_up_y,
view_up_z);
ren1->GetActiveCamera()->SetViewAngle(30);
ren1->GetActiveCamera()->SetClippingRange(0.1, 1000);
renWin->SetSize(1024, 1024);
renWin->SetWindowName("Rendering Result");
renWin->Render();
// Screenshot
vtkNew<vtkWindowToImageFilter> windowToImageFilter;
windowToImageFilter->SetInput(iren->GetRenderWindow());
windowToImageFilter->SetScale(1);
windowToImageFilter->SetInputBufferTypeToRGB();
windowToImageFilter->ReadFrontBufferOff();
vtkNew<vtkPNGWriter> writer;
std::string fileName = "../argon-bubble_gs.png";
writer->SetFileName(fileName.c_str());
writer->SetInputConnection(windowToImageFilter->GetOutputPort());
writer->Write();
std::cout << "=======Saving rendering Done!" << endl;
// Turn on for interaction
// iren->Start();
return EXIT_SUCCESS;
}
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