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| − | ==Description== | + | = '''See [https://lorensen.github.io/VTKExamples/site/Cxx/GeometricObjects/ParametricObjectsDemo ParametricObjectsDemo] on the new [https://lorensen.github.io/VTKExamples/site/ VTKExamples website].''' = |
| − | See [http://www.vtk.org/img/ParametricSurfaces.pdf Parametric Equations for Surfaces] by Andrew Maclean for an excellent description of these beautiful parametric surfaces. | |
| − | | |
| − | This example also demonstrates how to manipulate lists of VTK objects using vectors. Notice how parameters of the various Parametric Objects are accessed and set in the parametricObjects vector.
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| − | | |
| − | <div class="floatcenter">[[File:VTK_Examples_Baseline_GeometricObjects_TestParametricObjectsDemo.png]]</div>
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| − | ==ParametricObjectsDemo.cxx==
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| − | <source lang="cpp">
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| − | #include <vtkSmartPointer.h>
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| − | #include <vtkCamera.h>
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| − | #include <vtkPolyDataMapper.h>
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| − | #include <vtkTextMapper.h>
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| − | #include <vtkActor.h>
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| − | #include <vtkActor2D.h>
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| − | #include <vtkProperty.h>
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| − | #include <vtkTextProperty.h>
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| − | #include <vtkRenderWindow.h>
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| − | #include <vtkRenderer.h>
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| − | #include <vtkRenderWindowInteractor.h>
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| − | #include <vtkParametricFunctionSource.h>
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| − | #include <vtkMath.h>
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| − | #include <vtkPoints.h>
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| − | | |
| − | #include <vtkParametricTorus.h>
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| − | #include <vtkParametricBoy.h>
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| − | #include <vtkParametricConicSpiral.h>
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| − | #include <vtkParametricCrossCap.h>
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| − | #include <vtkParametricDini.h>
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| − | #include <vtkParametricEllipsoid.h>
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| − | #include <vtkParametricEnneper.h>
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| − | #include <vtkParametricFigure8Klein.h>
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| − | #include <vtkParametricKlein.h>
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| − | #include <vtkParametricMobius.h>
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| − | #include <vtkParametricRandomHills.h>
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| − | #include <vtkParametricRoman.h>
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| − | #include <vtkParametricSpline.h>
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| − | #include <vtkParametricSuperEllipsoid.h>
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| − | #include <vtkParametricSuperToroid.h>
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| − | #include <vtkParametricTorus.h>
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| − | | |
| − | #include <vector>
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| − | | |
| − | int main(int, char *[])
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| − | {
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| − | // Select one of the following (matching the selection above)
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| − | std::vector<vtkSmartPointer<vtkParametricFunction> > parametricObjects;
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricBoy>::New());
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| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricConicSpiral>::New());
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| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricCrossCap>::New());
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| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricDini>::New());
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricEllipsoid>::New());
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| − | static_cast<vtkParametricEllipsoid *>(
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| − | parametricObjects.back().GetPointer())->SetXRadius(.5);
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| − | static_cast<vtkParametricEllipsoid *>(
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| − | parametricObjects.back().GetPointer())->SetYRadius(2.0);
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricEnneper>::New());
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| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricFigure8Klein>::New());
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| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricKlein>::New());
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| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricMobius>::New());
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| − | static_cast<vtkParametricMobius *>(
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| − | parametricObjects.back().GetPointer())->SetRadius(2.0);
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| − | static_cast<vtkParametricMobius *>(
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| − | parametricObjects.back().GetPointer())->SetMinimumV(-0.5);
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| − | static_cast<vtkParametricMobius *>(
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| − | parametricObjects.back().GetPointer())->SetMaximumV(0.5);
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| − | | |
| − | vtkSmartPointer<vtkParametricRandomHills> randomHills =
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| − | vtkSmartPointer<vtkParametricRandomHills>::New();
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| − | randomHills->AllowRandomGenerationOff();
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| − | parametricObjects.push_back(randomHills);
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricRoman>::New());
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricSuperEllipsoid>::New());
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| − | static_cast<vtkParametricSuperEllipsoid *>(
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| − | parametricObjects.back().GetPointer())->SetN1(.50);
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| − | static_cast<vtkParametricSuperEllipsoid *>(
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| − | parametricObjects.back().GetPointer())->SetN2(.1);
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricSuperToroid>::New());
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| − | static_cast<vtkParametricSuperToroid *>(
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| − | parametricObjects.back().GetPointer())->SetN1(.2);
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| − | static_cast<vtkParametricSuperToroid *>(
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| − | parametricObjects.back().GetPointer())->SetN2(3.0);
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| − | | |
| − | parametricObjects.push_back(
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| − | vtkSmartPointer<vtkParametricTorus>::New());
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| − | | |
| − | // The spline needs points
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| − | vtkSmartPointer<vtkParametricSpline> spline =
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| − | vtkSmartPointer<vtkParametricSpline>::New();
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| − | vtkSmartPointer<vtkPoints> inputPoints =
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| − | vtkSmartPointer<vtkPoints>::New();
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| − | vtkMath::RandomSeed(8775070);
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| − | for (int p = 0; p < 10; p++)
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| − | {
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| − | double x = vtkMath::Random(0.0, 1.0);
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| − | double y = vtkMath::Random(0.0, 1.0);
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| − | double z = vtkMath::Random(0.0, 1.0);
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| − | inputPoints->InsertNextPoint(x, y, z);
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| − | }
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| − | spline->SetPoints(inputPoints);
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| − | parametricObjects.push_back(spline);
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| − | | |
| − | std::vector<vtkSmartPointer<vtkParametricFunctionSource> >
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| − | parametricFunctionSources;
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| − | std::vector<vtkSmartPointer<vtkRenderer> >
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| − | renderers;
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| − | std::vector<vtkSmartPointer<vtkPolyDataMapper> >
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| − | mappers;
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| − | std::vector<vtkSmartPointer<vtkActor> >
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| − | actors;
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| − | std::vector<vtkSmartPointer<vtkTextMapper> >
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| − | textmappers;
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| − | std::vector<vtkSmartPointer<vtkActor2D> >
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| − | textactors;
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| − | | |
| − | // Create one text property for all
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| − | vtkSmartPointer<vtkTextProperty> textProperty =
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| − | vtkSmartPointer<vtkTextProperty>::New();
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| − | textProperty->SetFontSize(10);
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| − | textProperty->SetJustificationToCentered();
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| − | | |
| − | vtkSmartPointer<vtkProperty> backProperty =
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| − | vtkSmartPointer<vtkProperty>::New();
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| − | backProperty->SetColor(1.0, 0.0, 0.0);
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| − | | |
| − | // Create a parametric function source, renderer, mapper, and actor
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| − | // for each object
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| − | for(unsigned int i = 0; i < parametricObjects.size(); i++)
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| − | {
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| − | parametricFunctionSources.push_back(
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| − | vtkSmartPointer<vtkParametricFunctionSource>::New());
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| − | parametricFunctionSources[i]->SetParametricFunction(parametricObjects[i]);
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| − | parametricFunctionSources[i]->SetUResolution(51);
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| − | parametricFunctionSources[i]->SetVResolution(51);
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| − | parametricFunctionSources[i]->SetWResolution(51);
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| − | parametricFunctionSources[i]->Update();
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| − | | |
| − | mappers.push_back(vtkSmartPointer<vtkPolyDataMapper>::New());
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| − | mappers[i]->SetInputConnection(
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| − | parametricFunctionSources[i]->GetOutputPort());
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| − | | |
| − | actors.push_back(vtkSmartPointer<vtkActor>::New());
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| − | actors[i]->SetMapper(mappers[i]);
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| − | actors[i]->SetBackfaceProperty(backProperty);
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| − | | |
| − | textmappers.push_back(vtkSmartPointer<vtkTextMapper>::New());
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| − | textmappers[i]->SetInput(parametricObjects[i]->GetClassName());
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| − | textmappers[i]->SetTextProperty(textProperty);
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| − | | |
| − | textactors.push_back(vtkSmartPointer<vtkActor2D>::New());
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| − | textactors[i]->SetMapper(textmappers[i]);
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| − | textactors[i]->SetPosition(100, 16);
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| − | renderers.push_back(vtkSmartPointer<vtkRenderer>::New());
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| − | }
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| − | unsigned int gridDimensions = 4;
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| − | | |
| − | // Need a renderer even if there is no actor
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| − | for(size_t i = parametricObjects.size();
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| − | i < gridDimensions * gridDimensions;
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| − | i++)
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| − | {
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| − | renderers.push_back(vtkSmartPointer<vtkRenderer>::New());
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| − | }
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| − | | |
| − | vtkSmartPointer<vtkRenderWindow> renderWindow =
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| − | vtkSmartPointer<vtkRenderWindow>::New();
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| − | int rendererSize = 200;
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| − | renderWindow->SetSize(
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| − | rendererSize*gridDimensions, rendererSize*gridDimensions);
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| − | | |
| − | for(int row = 0; row < static_cast<int>(gridDimensions); row++)
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| − | {
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| − | for(int col = 0; col < static_cast<int>(gridDimensions); col++)
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| − | {
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| − | int index = row*gridDimensions + col;
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| − | | |
| − | // (xmin, ymin, xmax, ymax)
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| − | double viewport[4] =
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| − | {static_cast<double>(col) * rendererSize / (gridDimensions * rendererSize),
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| − | static_cast<double>(gridDimensions - (row+1)) * rendererSize / (gridDimensions * rendererSize),
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| − | static_cast<double>(col+1)*rendererSize / (gridDimensions * rendererSize),
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| − | static_cast<double>(gridDimensions - row) * rendererSize / (gridDimensions * rendererSize)};
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| − | | |
| − | renderWindow->AddRenderer(renderers[index]);
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| − | renderers[index]->SetViewport(viewport);
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| − | if(index > static_cast<int>(parametricObjects.size() - 1))
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| − | {
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| − | continue;
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| − | }
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| − | renderers[index]->AddActor(actors[index]);
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| − | renderers[index]->AddActor(textactors[index]);
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| − | renderers[index]->SetBackground(.2, .3, .4);
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| − | renderers[index]->ResetCamera();
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| − | renderers[index]->GetActiveCamera()->Azimuth(30);
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| − | renderers[index]->GetActiveCamera()->Elevation(-30);
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| − | renderers[index]->GetActiveCamera()->Zoom(0.9);
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| − | renderers[index]->ResetCameraClippingRange();
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| − | }
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| − | }
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| − | | |
| − | vtkSmartPointer<vtkRenderWindowInteractor> interactor =
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| − | vtkSmartPointer<vtkRenderWindowInteractor>::New();
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| − | interactor->SetRenderWindow(renderWindow);
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| − | | |
| − | renderWindow->Render();
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| − | interactor->Start();
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| − | | |
| − | return EXIT_SUCCESS;
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| − | }
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| − | </source>
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| − | | |
| − | {{VTKCMakeLists|{{SUBPAGENAME}}}}
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