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| − | This example creates a sphere and then finds the closest point on the sphere to a test point.
| + | = '''See [https://lorensen.github.io/VTKExamples/site/Cxx/PolyData/CellLocator CellLocator] on the new [https://lorensen.github.io/VTKExamples/site/ VTKExamples website].''' = |
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| − | ==CellLocator.cxx==
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| − | <source lang="cpp">
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| − | #include <vtkSmartPointer.h>
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| − | #include <vtkSphereSource.h>
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| − | #include <vtkCellLocator.h>
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| − | int main(int, char *[])
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| − | {
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| − | vtkSmartPointer<vtkSphereSource> sphereSource =
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| − | vtkSmartPointer<vtkSphereSource>::New();
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| − | sphereSource->Update();
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| − | // Create the tree
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| − | vtkSmartPointer<vtkCellLocator> cellLocator =
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| − | vtkSmartPointer<vtkCellLocator>::New();
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| − | cellLocator->SetDataSet(sphereSource->GetOutput());
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| − | cellLocator->BuildLocator();
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| − | double testPoint[3] = {2.0, 0.0, 0.0};
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| − | //Find the closest points to TestPoint
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| − | double closestPoint[3];//the coordinates of the closest point will be returned here
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| − | double closestPointDist2; //the squared distance to the closest point will be returned here
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| − | vtkIdType cellId; //the cell id of the cell containing the closest point will be returned here
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| − | int subId; //this is rarely used (in triangle strips only, I believe)
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| − | cellLocator->FindClosestPoint(testPoint, closestPoint, cellId, subId, closestPointDist2);
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| − | std::cout << "Coordinates of closest point: " << closestPoint[0] << " " << closestPoint[1] << " " << closestPoint[2] << std::endl;
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| − | std::cout << "Squared distance to closest point: " << closestPointDist2 << std::endl;
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| − | std::cout << "CellId: " << cellId << std::endl;
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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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| − | Color query point and points found to be neighbors.
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| − | [[Category:VTKAddVisualization]]
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