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/*=========================================================================
Program: Visualization Toolkit
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 "vtkTestUtilities.h"
#include "vtkRegressionTestImage.h"
#include "vtkActor.h"
#include "vtkCamera.h"
#include "vtkCommand.h"
#include "vtkHardwareSelector.h"
#include "vtkIdTypeArray.h"
#include "vtkInformation.h"
#include "vtkInteractorStyleRubberBandPick.h"
#include "vtkNew.h"
#include "vtkPolyDataMapper.h"
#include "vtkProp3DCollection.h"
#include "vtkRenderedAreaPicker.h"
#include "vtkRenderer.h"
#include "vtkRenderWindowInteractor.h"
#include "vtkRenderWindow.h"
#include "vtkSelection.h"
#include "vtkSelectionNode.h"
#include "vtkSphereSource.h"
class PointPickCommand : public vtkCommand
{
protected:
vtkNew<vtkIdTypeArray> PointIds;
vtkRenderer *Renderer;
vtkAreaPicker *Picker;
vtkPolyDataMapper *Mapper;
public:
static PointPickCommand * New() {return new PointPickCommand;}
vtkTypeMacro(PointPickCommand, vtkCommand);
PointPickCommand()
{
}
virtual ~PointPickCommand()
{
}
void SetPointIds(vtkSelection *selection)
{
// Find selection node that we're interested in:
const vtkIdType numNodes = selection->GetNumberOfNodes();
for (vtkIdType nodeId = 0; nodeId < numNodes; ++nodeId)
{
vtkSelectionNode *node = selection->GetNode(nodeId);
// Check if the mapper is this instance of MoleculeMapper
vtkActor *selActor = vtkActor::SafeDownCast(
node->GetProperties()->Get(vtkSelectionNode::PROP()));
if (selActor && (selActor->GetMapper() == this->Mapper))
{
// Separate the selection ids into atoms and bonds
vtkIdTypeArray *selIds = vtkIdTypeArray::SafeDownCast(
node->GetSelectionList());
if (selIds)
{
vtkIdType numIds = selIds->GetNumberOfTuples();
for (vtkIdType i = 0; i < numIds; ++i)
{
vtkIdType curId = selIds->GetValue(i);
this->PointIds->InsertNextValue(curId);
}
}
}
}
}
vtkIdTypeArray *GetPointIds()
{
return this->PointIds.GetPointer();
}
void SetMapper(vtkPolyDataMapper *m)
{
this->Mapper = m;
}
void SetRenderer(vtkRenderer *r)
{
this->Renderer = r;
}
void SetPicker(vtkAreaPicker *p)
{
this->Picker = p;
}
virtual void Execute(vtkObject *, unsigned long, void *)
{
vtkProp3DCollection *props = this->Picker->GetProp3Ds();
if (props->GetNumberOfItems() != 0)
{
// If anything was picked during the fast area pick, do a more detailed
// pick.
vtkNew<vtkHardwareSelector> selector;
selector->SetFieldAssociation(vtkDataObject::FIELD_ASSOCIATION_POINTS);
selector->SetRenderer(this->Renderer);
selector->SetArea(
static_cast<unsigned int>(this->Renderer->GetPickX1()),
static_cast<unsigned int>(this->Renderer->GetPickY1()),
static_cast<unsigned int>(this->Renderer->GetPickX2()),
static_cast<unsigned int>(this->Renderer->GetPickY2()));
// Make the actual pick and pass the result to the convenience function
// defined earlier
vtkSelection *result = selector->Select();
this->SetPointIds(result);
this->DumpPointSelection();
result->Delete();
}
}
// Convenience function to print out the atom and bond ids that belong to
// molMap and are contained in sel
void DumpPointSelection()
{
// Print selection
cerr << "\n### Selection ###\n";
cerr << "Points: ";
for (vtkIdType i = 0; i < this->PointIds->GetNumberOfTuples(); i++)
{
cerr << this->PointIds->GetValue(i) << " ";
}
cerr << endl;
}
};
int TestPointSelection(int argc, char *argv[])
{
// create a line and a mesh
vtkNew<vtkSphereSource> sphere;
// Set up render engine
vtkNew<vtkPolyDataMapper> sphereMapper;
sphereMapper->SetInputConnection(sphere->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(sphereMapper.GetPointer());
vtkNew<vtkRenderer> ren;
ren->AddActor(actor.GetPointer());
vtkNew<vtkRenderWindow> win;
win->SetMultiSamples(0);
win->AddRenderer(ren.GetPointer());
vtkNew<vtkRenderWindowInteractor> iren;
iren->SetRenderWindow(win.GetPointer());
ren->SetBackground(0.0,0.0,0.0);
win->SetSize(450,450);
win->Render();
ren->GetActiveCamera()->Zoom(1.2);
// Setup picker
vtkNew<vtkInteractorStyleRubberBandPick> pickerInt;
iren->SetInteractorStyle(pickerInt.GetPointer());
vtkNew<vtkRenderedAreaPicker> picker;
iren->SetPicker(picker.GetPointer());
// We'll follow up the cheap RenderedAreaPick with a detailed selection
// to obtain the atoms and bonds.
vtkNew<PointPickCommand> com;
com->SetRenderer(ren.GetPointer());
com->SetPicker(picker.GetPointer());
com->SetMapper(sphereMapper.GetPointer());
picker->AddObserver(vtkCommand::EndPickEvent, com.GetPointer());
// Make pick -- lower left quarter of renderer
win->Render();
picker->AreaPick(0, 0, 225, 225, ren.GetPointer());
win->Render();
// Interact if desired
int retVal = vtkRegressionTestImage(win.GetPointer());
if ( retVal == vtkRegressionTester::DO_INTERACTOR)
{
iren->Start();
}
// Verify pick
if (com->GetPointIds()->GetNumberOfTuples() < 7 ||
com->GetPointIds()->GetValue(0) != 0 ||
com->GetPointIds()->GetValue(1) != 26 ||
com->GetPointIds()->GetValue(2) != 27 ||
com->GetPointIds()->GetValue(3) != 32 ||
com->GetPointIds()->GetValue(4) != 33 ||
com->GetPointIds()->GetValue(5) != 38 ||
com->GetPointIds()->GetValue(6) != 39
)
{
cerr << "Incorrect atoms/bonds picked! (if any picks were performed inter"
"actively this could be ignored).\n";
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
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