Program Listing for File traversal_node_bvh_shape.h

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#ifndef HPP_FCL_TRAVERSAL_NODE_MESH_SHAPE_H
#define HPP_FCL_TRAVERSAL_NODE_MESH_SHAPE_H


#include <hpp/fcl/collision_data.h>
#include <hpp/fcl/shape/geometric_shapes.h>
#include <hpp/fcl/narrowphase/narrowphase.h>
#include <hpp/fcl/shape/geometric_shapes_utility.h>
#include <hpp/fcl/internal/traversal_node_base.h>
#include <hpp/fcl/internal/traversal.h>
#include <hpp/fcl/BVH/BVH_model.h>

namespace hpp {
namespace fcl {


template <typename BV, typename S>
class BVHShapeCollisionTraversalNode : public CollisionTraversalNodeBase {
 public:
  BVHShapeCollisionTraversalNode(const CollisionRequest& request)
      : CollisionTraversalNodeBase(request) {
    model1 = NULL;
    model2 = NULL;

    num_bv_tests = 0;
    num_leaf_tests = 0;
    query_time_seconds = 0.0;
  }

  bool isFirstNodeLeaf(unsigned int b) const {
    return model1->getBV(b).isLeaf();
  }

  int getFirstLeftChild(unsigned int b) const {
    return model1->getBV(b).leftChild();
  }

  int getFirstRightChild(unsigned int b) const {
    return model1->getBV(b).rightChild();
  }

  const BVHModel<BV>* model1;
  const S* model2;
  BV model2_bv;

  mutable int num_bv_tests;
  mutable int num_leaf_tests;
  mutable FCL_REAL query_time_seconds;
};

template <typename S, typename BV>
class ShapeBVHCollisionTraversalNode : public CollisionTraversalNodeBase {
 public:
  ShapeBVHCollisionTraversalNode(const CollisionRequest& request)
      : CollisionTraversalNodeBase(request) {
    model1 = NULL;
    model2 = NULL;

    num_bv_tests = 0;
    num_leaf_tests = 0;
    query_time_seconds = 0.0;
  }

  bool firstOverSecond(unsigned int, unsigned int) const { return false; }

  bool isSecondNodeLeaf(unsigned int b) const {
    return model2->getBV(b).isLeaf();
  }

  int getSecondLeftChild(unsigned int b) const {
    return model2->getBV(b).leftChild();
  }

  int getSecondRightChild(unsigned int b) const {
    return model2->getBV(b).rightChild();
  }

  const S* model1;
  const BVHModel<BV>* model2;
  BV model1_bv;

  mutable int num_bv_tests;
  mutable int num_leaf_tests;
  mutable FCL_REAL query_time_seconds;
};

template <typename BV, typename S,
          int _Options = RelativeTransformationIsIdentity>
class MeshShapeCollisionTraversalNode
    : public BVHShapeCollisionTraversalNode<BV, S> {
 public:
  enum {
    Options = _Options,
    RTIsIdentity = _Options & RelativeTransformationIsIdentity
  };

  MeshShapeCollisionTraversalNode(const CollisionRequest& request)
      : BVHShapeCollisionTraversalNode<BV, S>(request) {
    vertices = NULL;
    tri_indices = NULL;

    nsolver = NULL;
  }

  bool BVDisjoints(unsigned int b1, unsigned int /*b2*/,
                   FCL_REAL& sqrDistLowerBound) const {
    if (this->enable_statistics) this->num_bv_tests++;
    bool disjoint;
    if (RTIsIdentity)
      disjoint = !this->model1->getBV(b1).bv.overlap(
          this->model2_bv, this->request, sqrDistLowerBound);
    else
      disjoint = !overlap(this->tf1.getRotation(), this->tf1.getTranslation(),
                          this->model1->getBV(b1).bv, this->model2_bv,
                          this->request, sqrDistLowerBound);
    if (disjoint)
      internal::updateDistanceLowerBoundFromBV(this->request, *this->result,
                                               sqrDistLowerBound);
    assert(!disjoint || sqrDistLowerBound > 0);
    return disjoint;
  }

  void leafCollides(unsigned int b1, unsigned int /*b2*/,
                    FCL_REAL& sqrDistLowerBound) const {
    if (this->enable_statistics) this->num_leaf_tests++;
    const BVNode<BV>& node = this->model1->getBV(b1);

    int primitive_id = node.primitiveId();

    const Triangle& tri_id = tri_indices[primitive_id];

    const Vec3f& p1 = vertices[tri_id[0]];
    const Vec3f& p2 = vertices[tri_id[1]];
    const Vec3f& p3 = vertices[tri_id[2]];

    FCL_REAL distance;
    Vec3f normal;
    Vec3f c1, c2;  // closest point

    bool collision;
    if (RTIsIdentity) {
      static const Transform3f Id;
      collision = nsolver->shapeTriangleInteraction(
          *(this->model2), this->tf2, p1, p2, p3, Id, distance, c2, c1, normal);
    } else {
      collision = nsolver->shapeTriangleInteraction(*(this->model2), this->tf2,
                                                    p1, p2, p3, this->tf1,
                                                    distance, c2, c1, normal);
    }

    FCL_REAL distToCollision = distance - this->request.security_margin;
    if (collision) {
      sqrDistLowerBound = 0;
      if (this->request.num_max_contacts > this->result->numContacts()) {
        this->result->addContact(Contact(this->model1, this->model2,
                                         primitive_id, Contact::NONE, c1,
                                         -normal, -distance));
        assert(this->result->isCollision());
      }
    } else if (distToCollision <= this->request.collision_distance_threshold) {
      sqrDistLowerBound = 0;
      if (this->request.num_max_contacts > this->result->numContacts()) {
        this->result->addContact(
            Contact(this->model1, this->model2, primitive_id, Contact::NONE,
                    .5 * (c1 + c2), (c2 - c1).normalized(), -distance));
      }
    } else
      sqrDistLowerBound = distToCollision * distToCollision;

    internal::updateDistanceLowerBoundFromLeaf(this->request, *this->result,
                                               distToCollision, c1, c2);

    assert(this->result->isCollision() || sqrDistLowerBound > 0);
  }

  Vec3f* vertices;
  Triangle* tri_indices;

  const GJKSolver* nsolver;
};

template <typename S, typename BV,
          int _Options = RelativeTransformationIsIdentity>
class ShapeMeshCollisionTraversalNode
    : public ShapeBVHCollisionTraversalNode<S, BV> {
 public:
  enum {
    Options = _Options,
    RTIsIdentity = _Options & RelativeTransformationIsIdentity
  };

  ShapeMeshCollisionTraversalNode() : ShapeBVHCollisionTraversalNode<S, BV>() {
    vertices = NULL;
    tri_indices = NULL;

    nsolver = NULL;
  }

  bool BVDisjoints(unsigned int /*b1*/, unsigned int b2,
                   FCL_REAL& sqrDistLowerBound) const {
    if (this->enable_statistics) this->num_bv_tests++;
    bool disjoint;
    if (RTIsIdentity)
      disjoint = !this->model2->getBV(b2).bv.overlap(this->model1_bv,
                                                     sqrDistLowerBound);
    else
      disjoint = !overlap(this->tf2.getRotation(), this->tf2.getTranslation(),
                          this->model2->getBV(b2).bv, this->model1_bv,
                          sqrDistLowerBound);
    if (disjoint)
      internal::updateDistanceLowerBoundFromBV(this->request, *this->result,
                                               sqrDistLowerBound);
    assert(!disjoint || sqrDistLowerBound > 0);
    return disjoint;
  }

  void leafCollides(unsigned int /*b1*/, unsigned int b2,
                    FCL_REAL& sqrDistLowerBound) const {
    if (this->enable_statistics) this->num_leaf_tests++;
    const BVNode<BV>& node = this->model2->getBV(b2);

    int primitive_id = node.primitiveId();

    const Triangle& tri_id = tri_indices[primitive_id];

    const Vec3f& p1 = vertices[tri_id[0]];
    const Vec3f& p2 = vertices[tri_id[1]];
    const Vec3f& p3 = vertices[tri_id[2]];

    FCL_REAL distance;
    Vec3f normal;
    Vec3f c1, c2;  // closest points

    bool collision;
    if (RTIsIdentity) {
      static const Transform3f Id;
      collision = nsolver->shapeTriangleInteraction(
          *(this->model1), this->tf1, p1, p2, p3, Id, c1, c2, distance, normal);
    } else {
      collision = nsolver->shapeTriangleInteraction(*(this->model1), this->tf1,
                                                    p1, p2, p3, this->tf2, c1,
                                                    c2, distance, normal);
    }

    FCL_REAL distToCollision = distance - this->request.security_margin;
    if (collision) {
      sqrDistLowerBound = 0;
      if (this->request.num_max_contacts > this->result->numContacts()) {
        this->result->addContact(Contact(this->model1, this->model2,
                                         Contact::NONE, primitive_id, c1,
                                         normal, -distance));
        assert(this->result->isCollision());
      }
    } else if (distToCollision <= this->request.collision_distance_threshold) {
      sqrDistLowerBound = 0;
      if (this->request.num_max_contacts > this->result->numContacts()) {
        this->result->addContact(
            Contact(this->model1, this->model2, Contact::NONE, primitive_id,
                    .5 * (c1 + c2), (c2 - c1).normalized(), -distance));
      }
    } else
      sqrDistLowerBound = distToCollision * distToCollision;

    internal::updateDistanceLowerBoundFromLeaf(this->request, *this->result,
                                               distToCollision, c1, c2);

    assert(this->result->isCollision() || sqrDistLowerBound > 0);
  }

  Vec3f* vertices;
  Triangle* tri_indices;

  const GJKSolver* nsolver;
};



template <typename BV, typename S>
class BVHShapeDistanceTraversalNode : public DistanceTraversalNodeBase {
 public:
  BVHShapeDistanceTraversalNode() : DistanceTraversalNodeBase() {
    model1 = NULL;
    model2 = NULL;

    num_bv_tests = 0;
    num_leaf_tests = 0;
    query_time_seconds = 0.0;
  }

  bool isFirstNodeLeaf(unsigned int b) const {
    return model1->getBV(b).isLeaf();
  }

  int getFirstLeftChild(unsigned int b) const {
    return model1->getBV(b).leftChild();
  }

  int getFirstRightChild(unsigned int b) const {
    return model1->getBV(b).rightChild();
  }

  FCL_REAL BVDistanceLowerBound(unsigned int b1, unsigned int /*b2*/) const {
    return model1->getBV(b1).bv.distance(model2_bv);
  }

  const BVHModel<BV>* model1;
  const S* model2;
  BV model2_bv;

  mutable int num_bv_tests;
  mutable int num_leaf_tests;
  mutable FCL_REAL query_time_seconds;
};

template <typename S, typename BV>
class ShapeBVHDistanceTraversalNode : public DistanceTraversalNodeBase {
 public:
  ShapeBVHDistanceTraversalNode() : DistanceTraversalNodeBase() {
    model1 = NULL;
    model2 = NULL;

    num_bv_tests = 0;
    num_leaf_tests = 0;
    query_time_seconds = 0.0;
  }

  bool isSecondNodeLeaf(unsigned int b) const {
    return model2->getBV(b).isLeaf();
  }

  int getSecondLeftChild(unsigned int b) const {
    return model2->getBV(b).leftChild();
  }

  int getSecondRightChild(unsigned int b) const {
    return model2->getBV(b).rightChild();
  }

  FCL_REAL BVDistanceLowerBound(unsigned int /*b1*/, unsigned int b2) const {
    return model1_bv.distance(model2->getBV(b2).bv);
  }

  const S* model1;
  const BVHModel<BV>* model2;
  BV model1_bv;

  mutable int num_bv_tests;
  mutable int num_leaf_tests;
  mutable FCL_REAL query_time_seconds;
};

template <typename BV, typename S>
class MeshShapeDistanceTraversalNode
    : public BVHShapeDistanceTraversalNode<BV, S> {
 public:
  MeshShapeDistanceTraversalNode() : BVHShapeDistanceTraversalNode<BV, S>() {
    vertices = NULL;
    tri_indices = NULL;

    rel_err = 0;
    abs_err = 0;

    nsolver = NULL;
  }

  void leafComputeDistance(unsigned int b1, unsigned int /*b2*/) const {
    if (this->enable_statistics) this->num_leaf_tests++;

    const BVNode<BV>& node = this->model1->getBV(b1);

    int primitive_id = node.primitiveId();

    const Triangle& tri_id = tri_indices[primitive_id];

    const Vec3f& p1 = vertices[tri_id[0]];
    const Vec3f& p2 = vertices[tri_id[1]];
    const Vec3f& p3 = vertices[tri_id[2]];

    FCL_REAL d;
    Vec3f closest_p1, closest_p2, normal;
    nsolver->shapeTriangleInteraction(*(this->model2), this->tf2, p1, p2, p3,
                                      Transform3f(), d, closest_p2, closest_p1,
                                      normal);

    this->result->update(d, this->model1, this->model2, primitive_id,
                         DistanceResult::NONE, closest_p1, closest_p2, normal);
  }

  bool canStop(FCL_REAL c) const {
    if ((c >= this->result->min_distance - abs_err) &&
        (c * (1 + rel_err) >= this->result->min_distance))
      return true;
    return false;
  }

  Vec3f* vertices;
  Triangle* tri_indices;

  FCL_REAL rel_err;
  FCL_REAL abs_err;

  const GJKSolver* nsolver;
};

namespace details {

template <typename BV, typename S>
void meshShapeDistanceOrientedNodeleafComputeDistance(
    unsigned int b1, unsigned int /* b2 */, const BVHModel<BV>* model1,
    const S& model2, Vec3f* vertices, Triangle* tri_indices,
    const Transform3f& tf1, const Transform3f& tf2, const GJKSolver* nsolver,
    bool enable_statistics, int& num_leaf_tests,
    const DistanceRequest& /* request */, DistanceResult& result) {
  if (enable_statistics) num_leaf_tests++;

  const BVNode<BV>& node = model1->getBV(b1);
  int primitive_id = node.primitiveId();

  const Triangle& tri_id = tri_indices[primitive_id];
  const Vec3f& p1 = vertices[tri_id[0]];
  const Vec3f& p2 = vertices[tri_id[1]];
  const Vec3f& p3 = vertices[tri_id[2]];

  FCL_REAL distance;
  Vec3f closest_p1, closest_p2, normal;
  nsolver->shapeTriangleInteraction(model2, tf2, p1, p2, p3, tf1, distance,
                                    closest_p2, closest_p1, normal);

  result.update(distance, model1, &model2, primitive_id, DistanceResult::NONE,
                closest_p1, closest_p2, normal);
}

template <typename BV, typename S>
static inline void distancePreprocessOrientedNode(
    const BVHModel<BV>* model1, Vec3f* vertices, Triangle* tri_indices,
    int init_tri_id, const S& model2, const Transform3f& tf1,
    const Transform3f& tf2, const GJKSolver* nsolver,
    const DistanceRequest& /* request */, DistanceResult& result) {
  const Triangle& init_tri = tri_indices[init_tri_id];

  const Vec3f& p1 = vertices[init_tri[0]];
  const Vec3f& p2 = vertices[init_tri[1]];
  const Vec3f& p3 = vertices[init_tri[2]];

  FCL_REAL distance;
  Vec3f closest_p1, closest_p2, normal;
  nsolver->shapeTriangleInteraction(model2, tf2, p1, p2, p3, tf1, distance,
                                    closest_p2, closest_p1, normal);

  result.update(distance, model1, &model2, init_tri_id, DistanceResult::NONE,
                closest_p1, closest_p2, normal);
}

}  // namespace details


template <typename S>
class MeshShapeDistanceTraversalNodeRSS
    : public MeshShapeDistanceTraversalNode<RSS, S> {
 public:
  MeshShapeDistanceTraversalNodeRSS()
      : MeshShapeDistanceTraversalNode<RSS, S>() {}

  void preprocess() {
    details::distancePreprocessOrientedNode(
        this->model1, this->vertices, this->tri_indices, 0, *(this->model2),
        this->tf1, this->tf2, this->nsolver, this->request, *(this->result));
  }

  void postprocess() {}

  FCL_REAL BVDistanceLowerBound(unsigned int b1, unsigned int /*b2*/) const {
    if (this->enable_statistics) this->num_bv_tests++;
    return distance(this->tf1.getRotation(), this->tf1.getTranslation(),
                    this->model2_bv, this->model1->getBV(b1).bv);
  }

  void leafComputeDistance(unsigned int b1, unsigned int b2) const {
    details::meshShapeDistanceOrientedNodeleafComputeDistance(
        b1, b2, this->model1, *(this->model2), this->vertices,
        this->tri_indices, this->tf1, this->tf2, this->nsolver,
        this->enable_statistics, this->num_leaf_tests, this->request,
        *(this->result));
  }
};

template <typename S>
class MeshShapeDistanceTraversalNodekIOS
    : public MeshShapeDistanceTraversalNode<kIOS, S> {
 public:
  MeshShapeDistanceTraversalNodekIOS()
      : MeshShapeDistanceTraversalNode<kIOS, S>() {}

  void preprocess() {
    details::distancePreprocessOrientedNode(
        this->model1, this->vertices, this->tri_indices, 0, *(this->model2),
        this->tf1, this->tf2, this->nsolver, this->request, *(this->result));
  }

  void postprocess() {}

  FCL_REAL BVDistanceLowerBound(unsigned int b1, unsigned int /*b2*/) const {
    if (this->enable_statistics) this->num_bv_tests++;
    return distance(this->tf1.getRotation(), this->tf1.getTranslation(),
                    this->model2_bv, this->model1->getBV(b1).bv);
  }

  void leafComputeDistance(unsigned int b1, unsigned int b2) const {
    details::meshShapeDistanceOrientedNodeleafComputeDistance(
        b1, b2, this->model1, *(this->model2), this->vertices,
        this->tri_indices, this->tf1, this->tf2, this->nsolver,
        this->enable_statistics, this->num_leaf_tests, this->request,
        *(this->result));
  }
};

template <typename S>
class MeshShapeDistanceTraversalNodeOBBRSS
    : public MeshShapeDistanceTraversalNode<OBBRSS, S> {
 public:
  MeshShapeDistanceTraversalNodeOBBRSS()
      : MeshShapeDistanceTraversalNode<OBBRSS, S>() {}

  void preprocess() {
    details::distancePreprocessOrientedNode(
        this->model1, this->vertices, this->tri_indices, 0, *(this->model2),
        this->tf1, this->tf2, this->nsolver, this->request, *(this->result));
  }

  void postprocess() {}

  FCL_REAL BVDistanceLowerBound(unsigned int b1, unsigned int /*b2*/) const {
    if (this->enable_statistics) this->num_bv_tests++;
    return distance(this->tf1.getRotation(), this->tf1.getTranslation(),
                    this->model2_bv, this->model1->getBV(b1).bv);
  }

  void leafComputeDistance(unsigned int b1, unsigned int b2) const {
    details::meshShapeDistanceOrientedNodeleafComputeDistance(
        b1, b2, this->model1, *(this->model2), this->vertices,
        this->tri_indices, this->tf1, this->tf2, this->nsolver,
        this->enable_statistics, this->num_leaf_tests, this->request,
        *(this->result));
  }
};

template <typename S, typename BV>
class ShapeMeshDistanceTraversalNode
    : public ShapeBVHDistanceTraversalNode<S, BV> {
 public:
  ShapeMeshDistanceTraversalNode() : ShapeBVHDistanceTraversalNode<S, BV>() {
    vertices = NULL;
    tri_indices = NULL;

    rel_err = 0;
    abs_err = 0;

    nsolver = NULL;
  }

  void leafComputeDistance(unsigned int /*b1*/, unsigned int b2) const {
    if (this->enable_statistics) this->num_leaf_tests++;

    const BVNode<BV>& node = this->model2->getBV(b2);

    int primitive_id = node.primitiveId();

    const Triangle& tri_id = tri_indices[primitive_id];

    const Vec3f& p1 = vertices[tri_id[0]];
    const Vec3f& p2 = vertices[tri_id[1]];
    const Vec3f& p3 = vertices[tri_id[2]];

    FCL_REAL distance;
    Vec3f closest_p1, closest_p2, normal;
    nsolver->shapeTriangleInteraction(*(this->model1), this->tf1, p1, p2, p3,
                                      Transform3f(), distance, closest_p1,
                                      closest_p2, normal);

    this->result->update(distance, this->model1, this->model2,
                         DistanceResult::NONE, primitive_id, closest_p1,
                         closest_p2, normal);
  }

  bool canStop(FCL_REAL c) const {
    if ((c >= this->result->min_distance - abs_err) &&
        (c * (1 + rel_err) >= this->result->min_distance))
      return true;
    return false;
  }

  Vec3f* vertices;
  Triangle* tri_indices;

  FCL_REAL rel_err;
  FCL_REAL abs_err;

  const GJKSolver* nsolver;
};

template <typename S>
class ShapeMeshDistanceTraversalNodeRSS
    : public ShapeMeshDistanceTraversalNode<S, RSS> {
 public:
  ShapeMeshDistanceTraversalNodeRSS()
      : ShapeMeshDistanceTraversalNode<S, RSS>() {}

  void preprocess() {
    details::distancePreprocessOrientedNode(
        this->model2, this->vertices, this->tri_indices, 0, *(this->model1),
        this->tf2, this->tf1, this->nsolver, this->request, *(this->result));
  }

  void postprocess() {}

  FCL_REAL BVDistanceLowerBound(unsigned int /*b1*/, unsigned int b2) const {
    if (this->enable_statistics) this->num_bv_tests++;
    return distance(this->tf2.getRotation(), this->tf2.getTranslation(),
                    this->model1_bv, this->model2->getBV(b2).bv);
  }

  void leafComputeDistance(unsigned int b1, unsigned int b2) const {
    details::meshShapeDistanceOrientedNodeleafComputeDistance(
        b2, b1, this->model2, *(this->model1), this->vertices,
        this->tri_indices, this->tf2, this->tf1, this->nsolver,
        this->enable_statistics, this->num_leaf_tests, this->request,
        *(this->result));
  }
};

template <typename S>
class ShapeMeshDistanceTraversalNodekIOS
    : public ShapeMeshDistanceTraversalNode<S, kIOS> {
 public:
  ShapeMeshDistanceTraversalNodekIOS()
      : ShapeMeshDistanceTraversalNode<S, kIOS>() {}

  void preprocess() {
    details::distancePreprocessOrientedNode(
        this->model2, this->vertices, this->tri_indices, 0, *(this->model1),
        this->tf2, this->tf1, this->nsolver, *(this->result));
  }

  void postprocess() {}

  FCL_REAL BVDistanceLowerBound(unsigned int /*b1*/, unsigned int b2) const {
    if (this->enable_statistics) this->num_bv_tests++;
    return distance(this->tf2.getRotation(), this->tf2.getTranslation(),
                    this->model1_bv, this->model2->getBV(b2).bv);
  }

  void leafComputeDistance(unsigned int b1, unsigned int b2) const {
    details::meshShapeDistanceOrientedNodeleafComputeDistance(
        b2, b1, this->model2, *(this->model1), this->vertices,
        this->tri_indices, this->tf2, this->tf1, this->nsolver,
        this->enable_statistics, this->num_leaf_tests, this->request,
        *(this->result));
  }
};

template <typename S>
class ShapeMeshDistanceTraversalNodeOBBRSS
    : public ShapeMeshDistanceTraversalNode<S, OBBRSS> {
 public:
  ShapeMeshDistanceTraversalNodeOBBRSS()
      : ShapeMeshDistanceTraversalNode<S, OBBRSS>() {}

  void preprocess() {
    details::distancePreprocessOrientedNode(
        this->model2, this->vertices, this->tri_indices, 0, *(this->model1),
        this->tf2, this->tf1, this->nsolver, *(this->result));
  }

  void postprocess() {}

  FCL_REAL BVDistanceLowerBound(unsigned int /*b1*/, unsigned int b2) const {
    if (this->enable_statistics) this->num_bv_tests++;
    return distance(this->tf2.getRotation(), this->tf2.getTranslation(),
                    this->model1_bv, this->model2->getBV(b2).bv);
  }

  void leafComputeDistance(unsigned int b1, unsigned int b2) const {
    details::meshShapeDistanceOrientedNodeleafComputeDistance(
        b2, b1, this->model2, *(this->model1), this->vertices,
        this->tri_indices, this->tf2, this->tf1, this->nsolver,
        this->enable_statistics, this->num_leaf_tests, this->request,
        *(this->result));
  }
};


}  // namespace fcl

}  // namespace hpp


#endif