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/*=========================================================================
Program: Visualization Toolkit
Module: TestPolygonSelection.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 "vtkIdTypeArray.h"
#include "vtkInformation.h"
#include "vtkExtractSelectedPolyDataIds.h"
#include "vtkHardwareSelector.h"
#include "vtkIntArray.h"
#include "vtkInteractorEventRecorder.h"
#include "vtkInteractorStyleDrawPolygon.h"
#include "vtkNew.h"
#include "vtkPolyDataMapper.h"
#include "vtkRegressionTestImage.h"
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkSelection.h"
#include "vtkSelectionNode.h"
#include "vtkSmartPointer.h"
#include "vtkSphereSource.h"
const char eventLog[] =
"# StreamVersion 1\n"
"RenderEvent 0 0 0 0 0 0 0\n"
"EnterEvent 278 0 0 0 0 0 0\n"
"MouseMoveEvent 278 0 0 0 0 0 0\n"
"MouseMoveEvent 274 8 0 0 0 0 0\n"
"MouseMoveEvent 144 44 0 0 0 0 0\n"
"MouseMoveEvent 144 43 0 0 0 0 0\n"
"LeftButtonPressEvent 144 43 0 0 0 0 0\n"
"StartInteractionEvent 144 43 0 0 0 0 0\n"
"MouseMoveEvent 143 43 0 0 0 0 0\n"
"MouseMoveEvent 29 43 0 0 0 0 0\n"
"MouseMoveEvent 29 278 0 0 0 0 0\n"
"MouseMoveEvent 146 278 0 0 0 0 0\n"
"LeftButtonReleaseEvent 146 278 0 0 0 0 0\n"
"EndInteractionEvent 146 278 0 0 0 0 0\n"
"MouseMoveEvent 146 278 0 0 0 0 0\n"
"MouseMoveEvent 146 279 0 0 0 0 0\n"
"MouseMoveEvent 146 280 0 0 0 0 0\n"
"MouseMoveEvent 294 207 0 0 0 0 0\n"
"LeaveEvent 294 207 0 0 0 0 0\n"
;
int TestPolygonSelection( int argc, char* argv[] )
{
vtkNew<vtkSphereSource> sphere;
sphere->SetThetaResolution(16);
sphere->SetPhiResolution(16);
sphere->SetRadius(0.5);
vtkNew<vtkActor> sactor;
sactor->PickableOn(); //lets the HardwareSelector select in it
vtkNew<vtkPolyDataMapper> smapper;
sactor->SetMapper(smapper.GetPointer());
vtkNew<vtkRenderer> ren;
ren->AddActor(sactor.GetPointer());
// extracted part
vtkNew<vtkPolyDataMapper> emapper;
vtkNew<vtkActor> eactor;
eactor->PickableOff();
eactor->SetMapper(emapper.GetPointer());
ren->AddActor(eactor.GetPointer());
vtkNew<vtkRenderWindow> renWin;
renWin->SetSize(300,300);
renWin->SetMultiSamples(0);
renWin->AddRenderer(ren.GetPointer());
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(renWin.GetPointer());
//use the draw-polygon interactor style
vtkRenderWindowInteractor* rwi = renWin->GetInteractor();
vtkNew<vtkInteractorStyleDrawPolygon> polyStyle;
polyStyle->DrawPolygonPixelsOff();
rwi->SetInteractorStyle(polyStyle.GetPointer());
// record events
vtkNew<vtkInteractorEventRecorder> recorder;
recorder->SetInteractor(rwi);
#ifdef RECORD
recorder->SetFileName("record.log");
recorder->On();
recorder->Record();
#else
recorder->ReadFromInputStringOn();
recorder->SetInputString(eventLog);
#endif
smapper->SetInputConnection(sphere->GetOutputPort());
iren->Initialize();
renWin->Render();
#ifndef RECORD
recorder->Play();
recorder->Off();
#endif
renWin->Render();
std::vector<vtkVector2i> points = polyStyle->GetPolygonPoints();
if(points.size() >= 3)
{
vtkNew<vtkIntArray> polygonPointsArray;
polygonPointsArray->SetNumberOfComponents(2);
polygonPointsArray->SetNumberOfTuples(points.size());
for (unsigned int j = 0; j < points.size(); ++j)
{
const vtkVector2i &v = points[j];
int pos[2] = {v[0], v[1]};
polygonPointsArray->SetTupleValue(j, pos);
}
vtkNew<vtkHardwareSelector> hardSel;
hardSel->SetRenderer(ren.GetPointer());
int* wsize = ren->GetSize();
int* origin = ren->GetOrigin();
hardSel->SetArea(origin[0], origin[1], origin[0]+wsize[0]-1, origin[1]+wsize[1]-1);
hardSel->SetFieldAssociation(vtkDataObject::FIELD_ASSOCIATION_CELLS);
if (hardSel->CaptureBuffers())
{
vtkSelection* psel = hardSel->GeneratePolygonSelection(
polygonPointsArray->GetPointer(0),
polygonPointsArray->GetNumberOfTuples()*2);
hardSel->ClearBuffers();
vtkSmartPointer<vtkSelection> sel;
sel.TakeReference(psel);
vtkNew<vtkExtractSelectedPolyDataIds> selFilter;
selFilter->SetInputConnection(0,sphere->GetOutputPort());
selFilter->SetInputData(1, sel);
selFilter->Update();
emapper->SetInputConnection(selFilter->GetOutputPort());
emapper->Update();
sactor->SetVisibility(false);
renWin->Render();
}
}
int retVal = vtkRegressionTestImage( renWin.GetPointer() );
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
return !retVal;
}
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