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UpdateBoundingBoxVisitor.cpp
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UpdateBoundingBoxVisitor.cpp
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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture *
* (c) 2006 INRIA, USTL, UJF, CNRS, MGH *
* *
* This program is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************
* Authors: The SOFA Team and external contributors (see Authors.txt) *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#include <sofa/simulation/UpdateBoundingBoxVisitor.h>
#include <sofa/type/vector.h>
#include <sofa/core/objectmodel/BaseObject.h>
#include <sofa/simulation/Node.h>
#include <sofa/helper/ScopedAdvancedTimer.h>
namespace sofa::simulation
{
UpdateBoundingBoxVisitor::UpdateBoundingBoxVisitor(const sofa::core::ExecParams* params)
:Visitor(params)
{
}
Visitor::Result UpdateBoundingBoxVisitor::processNodeTopDown(Node* node)
{
using namespace sofa::core::objectmodel;
type::vector<BaseObject*> objectList;
type::vector<BaseObject*>::iterator object;
node->get<BaseObject>(&objectList,BaseContext::Local);
sofa::type::BoundingBox* nodeBBox = node->f_bbox.beginEdit();
if(!node->f_bbox.isSet()) // bmarques: Without invalidating the bbox, the node's bbox will only be sized up, and never down with this visitor, to my understanding..
nodeBBox->invalidate();
for ( object = objectList.begin(); object != objectList.end(); ++object)
{
// warning the second parameter should NOT be false
// otherwise every object will participate to the bounding box
// when it makes no sense for some of them
// e.g. some loaders have different scale that the states displayed and used for the simu
// sometimes their values do not even have a spatial meaning (such as MechanicalObject representing constraint value)
// if some objects does not participate to the bounding box where they should,
// you should overload their computeBBox function to correct that
(*object)->computeBBox(params, true);
nodeBBox->include((*object)->f_bbox.getValue());
}
node->f_bbox.endEdit();
return RESULT_CONTINUE;
}
void UpdateBoundingBoxVisitor::processNodeBottomUp(simulation::Node* node)
{
sofa::type::BoundingBox* nodeBBox = node->f_bbox.beginEdit();
Node::ChildIterator childNode;
for( childNode = node->child.begin(); childNode!=node->child.end(); ++childNode)
{
nodeBBox->include((*childNode)->f_bbox.getValue());
}
node->f_bbox.endEdit();
}
}