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122 lines
3.9 KiB
122 lines
3.9 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: CellLocator.cxx,v $
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "vtkActor.h"
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#include "vtkCellLocator.h"
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#include "vtkPolyData.h"
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#include "vtkPolyDataMapper.h"
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#include "vtkProperty.h"
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#include "vtkRenderWindow.h"
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#include "vtkRenderWindowInteractor.h"
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#include "vtkRenderer.h"
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#include "vtkRenderer.h"
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#include "vtkSphereSource.h"
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#include "vtkRegressionTestImage.h"
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#include "vtkDebugLeaks.h"
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int CellLocator( int argc, char *argv[] )
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{
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vtkRenderer *renderer = vtkRenderer::New();
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vtkRenderWindow *renWin = vtkRenderWindow::New();
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renWin->AddRenderer(renderer);
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vtkRenderWindowInteractor *iren = vtkRenderWindowInteractor::New();
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iren->SetRenderWindow(renWin);
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vtkSphereSource *sphere = vtkSphereSource::New();
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sphere->SetThetaResolution(8); sphere->SetPhiResolution(8);
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sphere->SetRadius(1.0);
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sphere->Update();
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vtkPolyDataMapper *sphereMapper = vtkPolyDataMapper::New();
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sphereMapper->SetInputConnection(sphere->GetOutputPort());
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vtkActor *sphereActor = vtkActor::New();
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sphereActor->SetMapper(sphereMapper);
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vtkSphereSource *spot = vtkSphereSource::New();
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spot->SetPhiResolution(6);
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spot->SetThetaResolution(6);
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spot->SetRadius(0.1);
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vtkPolyDataMapper *spotMapper = vtkPolyDataMapper::New();
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spotMapper->SetInputConnection(spot->GetOutputPort());
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// Build a locator
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vtkCellLocator *cellLocator = vtkCellLocator::New();
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cellLocator->SetDataSet(sphere->GetOutput());
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cellLocator->BuildLocator();
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// Intersect with line
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double p1[] = {2.0, 1.0, 3.0};
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double p2[] = {0.0, 0.0, 0.0};
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double t, ptline[3], pcoords[3];
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int subId;
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cellLocator->IntersectWithLine(p1, p2, 0.001, t, ptline, pcoords, subId);
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vtkActor *intersectLineActor = vtkActor::New();
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intersectLineActor->SetMapper(spotMapper);
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intersectLineActor->SetPosition(ptline[0],ptline[1],ptline[2]);
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intersectLineActor->GetProperty()->SetColor(1.0, 0.0, 0.0);
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// Find closest point
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vtkIdType cellId;
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double dist;
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p1[0] = -2.4; p1[1] = -0.9;
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cellLocator->FindClosestPoint(p1, ptline, cellId, subId, dist);
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vtkActor *closestPointActor = vtkActor::New();
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closestPointActor->SetMapper(spotMapper);
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closestPointActor->SetPosition(ptline[0],ptline[1],ptline[2]);
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closestPointActor->GetProperty()->SetColor(0.0, 1.0, 0.0);
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// Find closest point within radius
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float radius = 5.0;
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p1[0] = .2; p1[1] = 1.0; p1[2] = 1.0;
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cellLocator->FindClosestPointWithinRadius(p1, radius, ptline, cellId, subId, dist);
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vtkActor *closestPointActor2 = vtkActor::New();
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closestPointActor2->SetMapper(spotMapper);
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closestPointActor2->SetPosition(ptline[0],ptline[1],ptline[2]);
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closestPointActor2->GetProperty()->SetColor(0.0, 1.0, 0.0);
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renderer->AddActor(sphereActor);
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renderer->AddActor(intersectLineActor);
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renderer->AddActor(closestPointActor);
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renderer->AddActor(closestPointActor2);
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renderer->SetBackground(1,1,1);
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renWin->SetSize(300,300);
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// interact with data
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renWin->Render();
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int retVal = vtkRegressionTestImage( renWin );
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if ( retVal == vtkRegressionTester::DO_INTERACTOR)
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{
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iren->Start();
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}
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// Clean up
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renderer->Delete();
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renWin->Delete();
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iren->Delete();
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sphere->Delete();
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sphereMapper->Delete();
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sphereActor->Delete();
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spot->Delete();
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spotMapper->Delete();
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intersectLineActor->Delete();
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closestPointActor->Delete();
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closestPointActor2->Delete();
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cellLocator->FreeSearchStructure();
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cellLocator->Delete();
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return !retVal;
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}
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