coal/BV/BV_node.h

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#ifndef COAL_BV_NODE_H
#define COAL_BV_NODE_H
 
#include "coal/data_types.h"
#include "coal/BV/BV.h"
 
namespace coal {
 
 
struct COAL_DLLAPI BVNodeBase {
  int first_child;
 
  unsigned int first_primitive;
 
  unsigned int num_primitives;
 
  BVNodeBase()
      : first_child(0),
        first_primitive(
            (std::numeric_limits<unsigned int>::max)())  // value we should help
                                                         // to raise an issue
        ,
        num_primitives(0) {}
 
  bool operator==(const BVNodeBase& other) const {
    return first_child == other.first_child &&
           first_primitive == other.first_primitive &&
           num_primitives == other.num_primitives;
  }
 
  bool operator!=(const BVNodeBase& other) const { return !(*this == other); }
 
  inline bool isLeaf() const { return first_child < 0; }
 
  inline int primitiveId() const { return -(first_child + 1); }
 
  inline int leftChild() const { return first_child; }
 
  inline int rightChild() const { return first_child + 1; }
};
 
template <typename BV>
struct COAL_DLLAPI BVNode : public BVNodeBase {
  typedef BVNodeBase Base;
 
  BV bv;
 
  bool operator==(const BVNode& other) const {
    return Base::operator==(other) && bv == other.bv;
  }
 
  bool operator!=(const BVNode& other) const { return !(*this == other); }
 
  bool overlap(const BVNode& other) const { return bv.overlap(other.bv); }
  bool overlap(const BVNode& other, const CollisionRequest& request,
               CoalScalar& sqrDistLowerBound) const {
    return bv.overlap(other.bv, request, sqrDistLowerBound);
  }
 
  CoalScalar distance(const BVNode& other, Vec3s* P1 = NULL,
                      Vec3s* P2 = NULL) const {
    return bv.distance(other.bv, P1, P2);
  }
 
  Vec3s getCenter() const { return bv.center(); }
 
  const Matrix3s& getOrientation() const {
    static const Matrix3s id3 = Matrix3s::Identity();
    return id3;
  }
 
  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
};
 
template <>
inline const Matrix3s& BVNode<OBB>::getOrientation() const {
  return bv.axes;
}
 
template <>
inline const Matrix3s& BVNode<RSS>::getOrientation() const {
  return bv.axes;
}
 
template <>
inline const Matrix3s& BVNode<OBBRSS>::getOrientation() const {
  return bv.obb.axes;
}
 
}  // namespace coal
 
#endif