You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
119 lines
3.2 KiB
119 lines
3.2 KiB
/*=========================================================================
|
|
|
|
Program: Visualization Toolkit
|
|
Module: $RCSfile: vtkPropPicker.cxx,v $
|
|
|
|
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 "vtkPropPicker.h"
|
|
|
|
#include "vtkAssemblyNode.h"
|
|
#include "vtkAssemblyPath.h"
|
|
#include "vtkCommand.h"
|
|
#include "vtkObjectFactory.h"
|
|
#include "vtkRenderer.h"
|
|
#include "vtkWorldPointPicker.h"
|
|
|
|
vtkCxxRevisionMacro(vtkPropPicker, "$Revision: 1.25 $");
|
|
vtkStandardNewMacro(vtkPropPicker);
|
|
|
|
vtkPropPicker::vtkPropPicker()
|
|
{
|
|
this->PickFromProps = NULL;
|
|
this->WorldPointPicker = vtkWorldPointPicker::New();
|
|
}
|
|
|
|
vtkPropPicker::~vtkPropPicker()
|
|
{
|
|
this->WorldPointPicker->Delete();
|
|
}
|
|
|
|
// set up for a pick
|
|
void vtkPropPicker::Initialize()
|
|
{
|
|
this->vtkAbstractPropPicker::Initialize();
|
|
}
|
|
|
|
// Pick from the given collection
|
|
int vtkPropPicker::Pick(double selectionX, double selectionY,
|
|
double vtkNotUsed(z), vtkRenderer *renderer)
|
|
{
|
|
return this->PickProp(selectionX, selectionY, renderer);
|
|
}
|
|
|
|
|
|
// Pick from the given collection
|
|
int vtkPropPicker::PickProp(double selectionX, double selectionY,
|
|
vtkRenderer *renderer, vtkPropCollection* pickfrom)
|
|
{
|
|
this->PickFromProps = pickfrom;
|
|
int ret = this->PickProp(selectionX, selectionY, renderer);
|
|
this->PickFromProps = NULL;
|
|
return ret;
|
|
}
|
|
|
|
|
|
|
|
// Perform pick operation with selection point provided. The z location
|
|
// is recovered from the zBuffer. Always returns 0 since no actors are picked.
|
|
int vtkPropPicker::PickProp(double selectionX, double selectionY,
|
|
vtkRenderer *renderer)
|
|
{
|
|
// Initialize picking process
|
|
this->Initialize();
|
|
this->Renderer = renderer;
|
|
this->SelectionPoint[0] = selectionX;
|
|
this->SelectionPoint[1] = selectionY;
|
|
this->SelectionPoint[2] = 0;
|
|
|
|
// Invoke start pick method if defined
|
|
this->InvokeEvent(vtkCommand::StartPickEvent,NULL);
|
|
|
|
// Have the renderer do the hardware pick
|
|
this->SetPath(
|
|
renderer->PickPropFrom(selectionX, selectionY, this->PickFromProps));
|
|
|
|
// If there was a pick then find the world x,y,z for the pick, and invoke
|
|
// its pick method.
|
|
if ( this->Path )
|
|
{
|
|
this->WorldPointPicker->Pick(selectionX, selectionY, 0, renderer);
|
|
this->WorldPointPicker->GetPickPosition(this->PickPosition);
|
|
this->Path->GetLastNode()->GetViewProp()->Pick();
|
|
this->InvokeEvent(vtkCommand::PickEvent,NULL);
|
|
}
|
|
|
|
this->InvokeEvent(vtkCommand::EndPickEvent,NULL);
|
|
|
|
// Call Pick on the Prop that was picked, and return 1 for success
|
|
if ( this->Path )
|
|
{
|
|
return 1;
|
|
}
|
|
else
|
|
{
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
void vtkPropPicker::PrintSelf(ostream& os, vtkIndent indent)
|
|
{
|
|
this->Superclass::PrintSelf(os, indent);
|
|
|
|
if (this->PickFromProps)
|
|
{
|
|
os << indent << "PickFrom List: " << this->PickFromProps << endl;
|
|
}
|
|
else
|
|
{
|
|
os << indent << "PickFrom List: (none)" << endl;
|
|
}
|
|
|
|
}
|
|
|