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/*=========================================================================
Program: Visualization Toolkit
Module: TestMeanValueCoordinatesInterpolation.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkActor.h"
#include "vtkDebugLeaks.h"
#include "vtkPolyData.h"
#include "vtkPolyDataMapper.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderer.h"
#include "vtkRenderer.h"
#include "vtkSphereSource.h"
#include "vtkClipPolyData.h"
#include "vtkElevationFilter.h"
#include "vtkPlane.h"
#include "vtkPlaneSource.h"
#include "vtkProbePolyhedron.h"
#include "vtkLightCollection.h"
#include "vtkLight.h"
#include "vtkProperty.h"
#include "vtkCamera.h"
#include "vtkCellArray.h"
#include "vtkSmartPointer.h"
int TestMeanValueCoordinatesInterpolation1( int argc, char *argv[] )
{
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderer> renderer1 =
vtkSmartPointer<vtkRenderer>::New();
renderer->SetViewport(0, 0, 0.5, 1);
vtkSmartPointer<vtkRenderWindow> renWin =
vtkSmartPointer<vtkRenderWindow>::New();
renWin->SetMultiSamples(0);
renWin->AddRenderer(renderer);
renWin->AddRenderer(renderer1);
renderer1->SetViewport(0.5, 0, 1, 1);
vtkSmartPointer<vtkRenderWindowInteractor> iren =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
iren->SetRenderWindow(renWin);
//
// Case 0: triangle meshes
//
// Create a sphere
vtkSmartPointer<vtkSphereSource> sphere =
vtkSmartPointer<vtkSphereSource>::New();
sphere->SetThetaResolution(51);
sphere->SetPhiResolution(17);
// Generate some scalars on the sphere
vtkSmartPointer<vtkElevationFilter> ele =
vtkSmartPointer<vtkElevationFilter>::New();
ele->SetInputConnection(sphere->GetOutputPort());
ele->SetLowPoint(-0.5,0,0);
ele->SetHighPoint(0.5,0,0);
ele->Update();
// Now clip the sphere in half and display it
vtkSmartPointer<vtkPlane> plane = vtkSmartPointer<vtkPlane>::New();
plane->SetOrigin(0,0,0);
plane->SetNormal(0,0,1);
vtkSmartPointer<vtkClipPolyData> clip =
vtkSmartPointer<vtkClipPolyData>::New();
clip->SetInputConnection(ele->GetOutputPort());
clip->SetClipFunction(plane);
vtkSmartPointer<vtkPolyDataMapper> sphereMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
sphereMapper->SetInputConnection(clip->GetOutputPort());
vtkSmartPointer<vtkActor> sphereActor = vtkSmartPointer<vtkActor>::New();
sphereActor->SetMapper(sphereMapper);
//Okay now sample the sphere mesh with a plane and see how it interpolates
vtkSmartPointer<vtkPlaneSource> pSource =
vtkSmartPointer<vtkPlaneSource>::New();
pSource->SetOrigin(-1.0,-1.0,0);
pSource->SetPoint1(1.0,-1.0,0);
pSource->SetPoint2(-1.0, 1.0,0);
pSource->SetXResolution(50);
pSource->SetYResolution(50);
// interpolation 0: use the faster MVC algorithm specialized for triangle meshes.
vtkSmartPointer<vtkProbePolyhedron> interp =
vtkSmartPointer<vtkProbePolyhedron>::New();
interp->SetInputConnection(pSource->GetOutputPort());
interp->SetSourceConnection(ele->GetOutputPort());
vtkSmartPointer<vtkPolyDataMapper> interpMapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
interpMapper->SetInputConnection(interp->GetOutputPort());
vtkSmartPointer<vtkActor> interpActor = vtkSmartPointer<vtkActor>::New();
interpActor->SetMapper(interpMapper);
//
// Case 1: general meshes
//
// Create a sphere
vtkSmartPointer<vtkSphereSource> sphere1 =
vtkSmartPointer<vtkSphereSource>::New();
sphere1->SetThetaResolution(51);
sphere1->SetPhiResolution(17);
// Generate some scalars on the sphere
vtkSmartPointer<vtkElevationFilter> ele1 =
vtkSmartPointer<vtkElevationFilter>::New();
ele1->SetInputConnection(sphere1->GetOutputPort());
ele1->SetLowPoint(-0.5,0,0);
ele1->SetHighPoint(0.5,0,0);
ele1->Update();
// create a cell with 4 points
vtkPolyData* spherePoly = vtkPolyData::SafeDownCast(ele1->GetOutput());
vtkCellArray *polys = spherePoly->GetPolys();
// merge the first two cell, this will make vtkProbePolyhedron select the
// more general MVC algorithm.
vtkIdType * p = polys->GetPointer();
vtkIdType pids[4] = {p[1], p[2], p[6], p[3]};
vtkSmartPointer<vtkCellArray> newPolys = vtkSmartPointer<vtkCellArray>::New();
newPolys->SetNumberOfCells(polys->GetNumberOfCells()-1);
newPolys->Initialize();
for (int i = 2; i < polys->GetNumberOfCells(); i++)
{
pids[0] = p[4*i+1];
pids[1] = p[4*i+2];
pids[2] = p[4*i+3];
newPolys->InsertNextCell(3,pids);
}
spherePoly->SetPolys(newPolys);
// Now clip the sphere in half and display it
vtkSmartPointer<vtkPlane> plane1 = vtkSmartPointer<vtkPlane>::New();
plane1->SetOrigin(0,0,0);
plane1->SetNormal(0,0,1);
vtkSmartPointer<vtkClipPolyData> clip1 =
vtkSmartPointer<vtkClipPolyData>::New();
clip1->SetInput(spherePoly);
clip1->SetClipFunction(plane1);
vtkSmartPointer<vtkPolyDataMapper> sphereMapper1 =
vtkSmartPointer<vtkPolyDataMapper>::New();
sphereMapper1->SetInputConnection(clip1->GetOutputPort());
vtkSmartPointer<vtkActor> sphereActor1 = vtkSmartPointer<vtkActor>::New();
sphereActor1->SetMapper(sphereMapper1);
//Okay now sample the sphere mesh with a plane and see how it interpolates
vtkSmartPointer<vtkPlaneSource> pSource1 =
vtkSmartPointer<vtkPlaneSource>::New();
pSource1->SetOrigin(-1.0,-1.0,0);
pSource1->SetPoint1(1.0,-1.0,0);
pSource1->SetPoint2(-1.0, 1.0,0);
pSource1->SetXResolution(50);
pSource1->SetYResolution(50);
// interpolation 1: use the more general but slower MVC algorithm.
vtkSmartPointer<vtkProbePolyhedron> interp1 =
vtkSmartPointer<vtkProbePolyhedron>::New();
interp1->SetInputConnection(pSource1->GetOutputPort());
interp1->SetSourceConnection(ele1->GetOutputPort());
vtkSmartPointer<vtkPolyDataMapper> interpMapper1 =
vtkSmartPointer<vtkPolyDataMapper>::New();
interpMapper1->SetInputConnection(interp1->GetOutputPort());
vtkSmartPointer<vtkActor> interpActor1 = vtkSmartPointer<vtkActor>::New();
interpActor1->SetMapper(interpMapper1);
//
// add actors to renderer
//
vtkSmartPointer<vtkProperty> lightProperty =
vtkSmartPointer<vtkProperty>::New();
lightProperty->LightingOff();
sphereActor->SetProperty(lightProperty);
interpActor->SetProperty(lightProperty);
interpActor1->SetProperty(lightProperty);
renderer->AddActor(sphereActor);
renderer->AddActor(interpActor);
renderer->ResetCamera();
renderer->SetBackground(1,1,1);
renderer1->AddActor(sphereActor);
renderer1->AddActor(interpActor1);
renderer1->ResetCamera();
renderer1->SetBackground(1,1,1);
renWin->SetSize(600,300);
// interact with data
renWin->Render();
int retVal = vtkRegressionTestImage( renWin );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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