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/*************************************************************************
* Copyright (C) 2013 by Burak ER *
* *
* *
* This program is free software; it is licensed under the terms of the *
* GNU General Public License v2 or later. See file LICENSE for details. *
*************************************************************************/
#ifdef YADE_FEM
#include <core/Aabb.hpp>
#include <pkg/fem/Bo1_Node_Aabb.hpp>
#include <pkg/fem/Node.hpp>
namespace yade { // Cannot have #include directive inside.
void Bo1_Node_Aabb::go(const shared_ptr<Shape>& cm, shared_ptr<Bound>& bv, const Se3r& se3, const Body* /*b*/)
{
Node* node = static_cast<Node*>(cm.get());
if (!bv) { bv = shared_ptr<Bound>(new Aabb); }
Aabb* aabb = static_cast<Aabb*>(bv.get());
Vector3r halfSize = (aabbEnlargeFactor > 0 ? aabbEnlargeFactor : 1.) * Vector3r(node->radius, node->radius, node->radius);
if (!scene->isPeriodic) {
aabb->min = se3.position - halfSize;
aabb->max = se3.position + halfSize;
return;
}
// adjust box size along axes so that Node doesn't stick out of the box even if sheared (i.e. parallelepiped)
if (scene->cell->hasShear()) {
Vector3r refHalfSize(halfSize);
const Vector3r& cos = scene->cell->getCos();
for (int i = 0; i < 3; i++) {
//cerr<<"cos["<<i<<"]"<<cos[i]<<" ";
int i1 = (i + 1) % 3, i2 = (i + 2) % 3;
halfSize[i1] += .5 * refHalfSize[i1] * (1 / cos[i] - 1);
halfSize[i2] += .5 * refHalfSize[i2] * (1 / cos[i] - 1);
}
}
//cerr<<" || "<<halfSize<<endl;
aabb->min = scene->cell->unshearPt(se3.position) - halfSize;
aabb->max = scene->cell->unshearPt(se3.position) + halfSize;
}
YADE_PLUGIN((Bo1_Node_Aabb));
} // namespace yade
#endif //YADE_FEM
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