traversal_node_setup.h

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/** \author Jia Pan */


#ifndef FCL_TRAVERSAL_NODE_SETUP_H
#define FCL_TRAVERSAL_NODE_SETUP_H

#include "fcl/config.h"
#include "fcl/traversal/traversal_node_bvhs.h"
#include "fcl/traversal/traversal_node_shapes.h"
#include "fcl/traversal/traversal_node_bvh_shape.h"

#if FCL_HAVE_OCTOMAP
#include "fcl/traversal/traversal_node_octree.h"
#endif

#include "fcl/BVH/BVH_utility.h"

namespace fcl
{

#if FCL_HAVE_OCTOMAP
/// @brief Initialize traversal node for collision between two octrees, given current object transform
template<typename NarrowPhaseSolver>
bool initialize(OcTreeCollisionTraversalNode<NarrowPhaseSolver>& node,
                const OcTree& model1, const Transform3f& tf1,
                const OcTree& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;
  
  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for distance between two octrees, given current object transform
template<typename NarrowPhaseSolver>
bool initialize(OcTreeDistanceTraversalNode<NarrowPhaseSolver>& node,
                const OcTree& model1, const Transform3f& tf1,
                const OcTree& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const DistanceRequest& request,
                DistanceResult& result)
{
  node.request = request;
  node.result = &result;
 
  node.model1 = &model1;
  node.model2 = &model2;
  
  node.otsolver = otsolver;
  
  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for collision between one shape and one octree, given current object transform
template<typename S, typename NarrowPhaseSolver>
bool initialize(ShapeOcTreeCollisionTraversalNode<S, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                const OcTree& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;

  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for collision between one octree and one shape, given current object transform
template<typename S, typename NarrowPhaseSolver>
bool initialize(OcTreeShapeCollisionTraversalNode<S, NarrowPhaseSolver>& node,
                const OcTree& model1, const Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;

  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for distance between one shape and one octree, given current object transform
template<typename S, typename NarrowPhaseSolver>
bool initialize(ShapeOcTreeDistanceTraversalNode<S, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                const OcTree& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const DistanceRequest& request,
                DistanceResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;

  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for distance between one octree and one shape, given current object transform
template<typename S, typename NarrowPhaseSolver>
bool initialize(OcTreeShapeDistanceTraversalNode<S, NarrowPhaseSolver>& node,
                const OcTree& model1, const Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const DistanceRequest& request,
                DistanceResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;

  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for collision between one mesh and one octree, given current object transform
template<typename BV, typename NarrowPhaseSolver>
bool initialize(MeshOcTreeCollisionTraversalNode<BV, NarrowPhaseSolver>& node,
                const BVHModel<BV>& model1, const Transform3f& tf1,
                const OcTree& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;

  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for collision between one octree and one mesh, given current object transform
template<typename BV, typename NarrowPhaseSolver>
bool initialize(OcTreeMeshCollisionTraversalNode<BV, NarrowPhaseSolver>& node,
                const OcTree& model1, const Transform3f& tf1,
                const BVHModel<BV>& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;

  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for distance between one mesh and one octree, given current object transform
template<typename BV, typename NarrowPhaseSolver>
bool initialize(MeshOcTreeDistanceTraversalNode<BV, NarrowPhaseSolver>& node,
                const BVHModel<BV>& model1, const Transform3f& tf1,
                const OcTree& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const DistanceRequest& request,
                DistanceResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;
  
  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

/// @brief Initialize traversal node for collision between one octree and one mesh, given current object transform
template<typename BV, typename NarrowPhaseSolver>
bool initialize(OcTreeMeshDistanceTraversalNode<BV, NarrowPhaseSolver>& node,
                const OcTree& model1, const Transform3f& tf1,
                const BVHModel<BV>& model2, const Transform3f& tf2,
                const OcTreeSolver<NarrowPhaseSolver>* otsolver,
                const DistanceRequest& request,
                DistanceResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.model2 = &model2;
  
  node.otsolver = otsolver;

  node.tf1 = tf1;
  node.tf2 = tf2;

  return true;
}

#endif


/// @brief Initialize traversal node for collision between two geometric shapes, given current object transform
template<typename S1, typename S2, typename NarrowPhaseSolver>
bool initialize(ShapeCollisionTraversalNode<S1, S2, NarrowPhaseSolver>& node,
                const S1& shape1, const Transform3f& tf1,
                const S2& shape2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  node.model1 = &shape1;
  node.tf1 = tf1;
  node.model2 = &shape2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  node.request = request;
  node.result = &result;
  
  node.cost_density = shape1.cost_density * shape2.cost_density;

  return true;
}

/// @brief Initialize traversal node for collision between one mesh and one shape, given current object transform
template<typename BV, typename S, typename NarrowPhaseSolver>
bool initialize(MeshShapeCollisionTraversalNode<BV, S, NarrowPhaseSolver>& node,
                BVHModel<BV>& model1, Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result,
                bool use_refit = false, bool refit_bottomup = false)
{
  if(model1.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  if(!tf1.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed(model1.num_vertices);
    for(int i = 0; i < model1.num_vertices; ++i)
    {
      Vec3f& p = model1.vertices[i];
      Vec3f new_v = tf1.transform(p);
      vertices_transformed[i] = new_v;
    }

    model1.beginReplaceModel();
    model1.replaceSubModel(vertices_transformed);
    model1.endReplaceModel(use_refit, refit_bottomup);

    tf1.setIdentity();
  }

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  computeBV(model2, tf2, node.model2_bv);

  node.vertices = model1.vertices;
  node.tri_indices = model1.tri_indices;

  node.request = request;
  node.result = &result;

  node.cost_density = model1.cost_density * model2.cost_density;

  return true;
}


/// @brief Initialize traversal node for collision between one mesh and one shape, given current object transform
template<typename S, typename BV, typename NarrowPhaseSolver>
bool initialize(ShapeMeshCollisionTraversalNode<S, BV, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                BVHModel<BV>& model2, Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result,
                bool use_refit = false, bool refit_bottomup = false)
{
  if(model2.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  if(!tf2.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed(model2.num_vertices);
    for(int i = 0; i < model2.num_vertices; ++i)
    {
      Vec3f& p = model2.vertices[i];
      Vec3f new_v = tf2.transform(p);
      vertices_transformed[i] = new_v;
    }

    model2.beginReplaceModel();
    model2.replaceSubModel(vertices_transformed);
    model2.endReplaceModel(use_refit, refit_bottomup);

    tf2.setIdentity();
  }

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  computeBV(model1, tf1, node.model1_bv);

  node.vertices = model2.vertices;
  node.tri_indices = model2.tri_indices;

  node.request = request;
  node.result = &result;

  node.cost_density = model1.cost_density * model2.cost_density;

  return true;
}

/// @cond IGNORE
namespace details
{

template<typename BV, typename S, typename NarrowPhaseSolver, template<typename, typename> class OrientedNode>
static inline bool setupMeshShapeCollisionOrientedNode(OrientedNode<S, NarrowPhaseSolver>& node, 
                                                       const BVHModel<BV>& model1, const Transform3f& tf1,
                                                       const S& model2, const Transform3f& tf2,
                                                       const NarrowPhaseSolver* nsolver,
                                                       const CollisionRequest& request,
                                                       CollisionResult& result)
{
  if(model1.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  computeBV(model2, tf2, node.model2_bv);

  node.vertices = model1.vertices;
  node.tri_indices = model1.tri_indices;

  node.request = request;
  node.result = &result;

  node.cost_density = model1.cost_density * model2.cost_density;

  return true;
}

}
/// @endcond



/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for OBB type
template<typename S, typename NarrowPhaseSolver>
bool initialize(MeshShapeCollisionTraversalNodeOBB<S, NarrowPhaseSolver>& node,
                const BVHModel<OBB>& model1, const Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupMeshShapeCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for RSS type
template<typename S, typename NarrowPhaseSolver>
bool initialize(MeshShapeCollisionTraversalNodeRSS<S, NarrowPhaseSolver>& node,
                const BVHModel<RSS>& model1, const Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request, 
                CollisionResult& result)
{
  return details::setupMeshShapeCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for kIOS type
template<typename S, typename NarrowPhaseSolver>
bool initialize(MeshShapeCollisionTraversalNodekIOS<S, NarrowPhaseSolver>& node,
                const BVHModel<kIOS>& model1, const Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupMeshShapeCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for OBBRSS type
template<typename S, typename NarrowPhaseSolver>
bool initialize(MeshShapeCollisionTraversalNodeOBBRSS<S, NarrowPhaseSolver>& node,
                const BVHModel<OBBRSS>& model1, const Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupMeshShapeCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}


/// @cond IGNORE
namespace details
{
template<typename S, typename BV, typename NarrowPhaseSolver, template<typename, typename> class OrientedNode>
static inline bool setupShapeMeshCollisionOrientedNode(OrientedNode<S, NarrowPhaseSolver>& node, 
                                                       const S& model1, const Transform3f& tf1,
                                                       const BVHModel<BV>& model2, const Transform3f& tf2,
                                                       const NarrowPhaseSolver* nsolver,
                                                       const CollisionRequest& request,
                                                       CollisionResult& result)
{
  if(model2.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  computeBV(model1, tf1, node.model1_bv);

  node.vertices = model2.vertices;
  node.tri_indices = model2.tri_indices;

  node.request = request;
  node.result = &result;

  node.cost_density = model1.cost_density * model2.cost_density;

  return true;
}
}
/// @endcond

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for OBB type
template<typename S, typename NarrowPhaseSolver>
bool initialize(ShapeMeshCollisionTraversalNodeOBB<S, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                const BVHModel<OBB>& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupShapeMeshCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for RSS type
template<typename S, typename NarrowPhaseSolver>
bool initialize(ShapeMeshCollisionTraversalNodeRSS<S, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                const BVHModel<RSS>& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupShapeMeshCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for kIOS type
template<typename S, typename NarrowPhaseSolver>
bool initialize(ShapeMeshCollisionTraversalNodekIOS<S, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                const BVHModel<kIOS>& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupShapeMeshCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}

/// @brief Initialize the traversal node for collision between one mesh and one shape, specialized for OBBRSS type
template<typename S, typename NarrowPhaseSolver>
bool initialize(ShapeMeshCollisionTraversalNodeOBBRSS<S, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                const BVHModel<OBBRSS>& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const CollisionRequest& request,
                CollisionResult& result)
{
  return details::setupShapeMeshCollisionOrientedNode(node, model1, tf1, model2, tf2, nsolver, request, result);
}




/// @brief Initialize traversal node for collision between two meshes, given the current transforms
template<typename BV>
bool initialize(MeshCollisionTraversalNode<BV>& node,
                BVHModel<BV>& model1, Transform3f& tf1,
                BVHModel<BV>& model2, Transform3f& tf2,
                const CollisionRequest& request,
                CollisionResult& result,
                bool use_refit = false, bool refit_bottomup = false)
{
  if(model1.getModelType() != BVH_MODEL_TRIANGLES || model2.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  if(!tf1.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed1(model1.num_vertices);
    for(int i = 0; i < model1.num_vertices; ++i)
    {
      Vec3f& p = model1.vertices[i];
      Vec3f new_v = tf1.transform(p);
      vertices_transformed1[i] = new_v;
    }

    model1.beginReplaceModel();
    model1.replaceSubModel(vertices_transformed1);
    model1.endReplaceModel(use_refit, refit_bottomup);

    tf1.setIdentity();
  }

  if(!tf2.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed2(model2.num_vertices);
    for(int i = 0; i < model2.num_vertices; ++i)
    {
      Vec3f& p = model2.vertices[i];
      Vec3f new_v = tf2.transform(p);
      vertices_transformed2[i] = new_v;
    }

    model2.beginReplaceModel();
    model2.replaceSubModel(vertices_transformed2);
    model2.endReplaceModel(use_refit, refit_bottomup);

    tf2.setIdentity();
  }

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;

  node.vertices1 = model1.vertices;
  node.vertices2 = model2.vertices;

  node.tri_indices1 = model1.tri_indices;
  node.tri_indices2 = model2.tri_indices;

  node.request = request;
  node.result = &result;

  node.cost_density = model1.cost_density * model2.cost_density;

  return true;
}


/// @brief Initialize traversal node for collision between two meshes, specialized for OBB type
bool initialize(MeshCollisionTraversalNodeOBB& node,
                const BVHModel<OBB>& model1, const Transform3f& tf1,
                const BVHModel<OBB>& model2, const Transform3f& tf2,
                const CollisionRequest& request, CollisionResult& result);

/// @brief Initialize traversal node for collision between two meshes, specialized for RSS type
bool initialize(MeshCollisionTraversalNodeRSS& node,
                const BVHModel<RSS>& model1, const Transform3f& tf1,
                const BVHModel<RSS>& model2, const Transform3f& tf2,
                const CollisionRequest& request, CollisionResult& result);

/// @brief Initialize traversal node for collision between two meshes, specialized for OBBRSS type
bool initialize(MeshCollisionTraversalNodeOBBRSS& node,
                const BVHModel<OBBRSS>& model1, const Transform3f& tf1,
                const BVHModel<OBBRSS>& model2, const Transform3f& tf2,
                const CollisionRequest& request, CollisionResult& result);

/// @brief Initialize traversal node for collision between two meshes, specialized for kIOS type
bool initialize(MeshCollisionTraversalNodekIOS& node,
                const BVHModel<kIOS>& model1, const Transform3f& tf1,
                const BVHModel<kIOS>& model2, const Transform3f& tf2,
                const CollisionRequest& request, CollisionResult& result);


/// @brief Initialize traversal node for distance between two geometric shapes
template<typename S1, typename S2, typename NarrowPhaseSolver>
bool initialize(ShapeDistanceTraversalNode<S1, S2, NarrowPhaseSolver>& node,
                const S1& shape1, const Transform3f& tf1,
                const S2& shape2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const DistanceRequest& request,
                DistanceResult& result)
{
  node.request = request;
  node.result = &result;

  node.model1 = &shape1;
  node.tf1 = tf1;
  node.model2 = &shape2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  return true;
}

/// @brief Initialize traversal node for distance computation between two meshes, given the current transforms
template<typename BV>
bool initialize(MeshDistanceTraversalNode<BV>& node,
                BVHModel<BV>& model1, Transform3f& tf1,
                BVHModel<BV>& model2, Transform3f& tf2,
                const DistanceRequest& request,
                DistanceResult& result,
                bool use_refit = false, bool refit_bottomup = false)
{
  if(model1.getModelType() != BVH_MODEL_TRIANGLES || model2.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  if(!tf1.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed1(model1.num_vertices);
    for(int i = 0; i < model1.num_vertices; ++i)
    {
      Vec3f& p = model1.vertices[i];
      Vec3f new_v = tf1.transform(p);
      vertices_transformed1[i] = new_v;
    }

    model1.beginReplaceModel();
    model1.replaceSubModel(vertices_transformed1);
    model1.endReplaceModel(use_refit, refit_bottomup);

    tf1.setIdentity();
  }

  if(!tf2.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed2(model2.num_vertices);
    for(int i = 0; i < model2.num_vertices; ++i)
    {
      Vec3f& p = model2.vertices[i];
      Vec3f new_v = tf2.transform(p);
      vertices_transformed2[i] = new_v;
    }

    model2.beginReplaceModel();
    model2.replaceSubModel(vertices_transformed2);
    model2.endReplaceModel(use_refit, refit_bottomup);

    tf2.setIdentity();
  }

  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;

  node.vertices1 = model1.vertices;
  node.vertices2 = model2.vertices;

  node.tri_indices1 = model1.tri_indices;
  node.tri_indices2 = model2.tri_indices;

  return true;
}


/// @brief Initialize traversal node for distance computation between two meshes, specialized for RSS type
bool initialize(MeshDistanceTraversalNodeRSS& node,
                const BVHModel<RSS>& model1, const Transform3f& tf1,
                const BVHModel<RSS>& model2, const Transform3f& tf2,
                const DistanceRequest& request,
                DistanceResult& result);

/// @brief Initialize traversal node for distance computation between two meshes, specialized for kIOS type
bool initialize(MeshDistanceTraversalNodekIOS& node,
                const BVHModel<kIOS>& model1, const Transform3f& tf1,
                const BVHModel<kIOS>& model2, const Transform3f& tf2,
                const DistanceRequest& request,
                DistanceResult& result);

/// @brief Initialize traversal node for distance computation between two meshes, specialized for OBBRSS type
bool initialize(MeshDistanceTraversalNodeOBBRSS& node,
                const BVHModel<OBBRSS>& model1, const Transform3f& tf1,
                const BVHModel<OBBRSS>& model2, const Transform3f& tf2,
                const DistanceRequest& request,
                DistanceResult& result);

/// @brief Initialize traversal node for distance computation between one mesh and one shape, given the current transforms
template<typename BV, typename S, typename NarrowPhaseSolver>
bool initialize(MeshShapeDistanceTraversalNode<BV, S, NarrowPhaseSolver>& node,
                BVHModel<BV>& model1, Transform3f& tf1,
                const S& model2, const Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const DistanceRequest& request,
                DistanceResult& result,
                bool use_refit = false, bool refit_bottomup = false)
{
  if(model1.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  if(!tf1.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed1(model1.num_vertices);
    for(int i = 0; i < model1.num_vertices; ++i)
    {
      Vec3f& p = model1.vertices[i];
      Vec3f new_v = tf1.transform(p);
      vertices_transformed1[i] = new_v;
    }

    model1.beginReplaceModel();
    model1.replaceSubModel(vertices_transformed1);
    model1.endReplaceModel(use_refit, refit_bottomup);

    tf1.setIdentity();
  }

  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;
  
  node.vertices = model1.vertices;
  node.tri_indices = model1.tri_indices;

  computeBV(model2, tf2, node.model2_bv);

  return true;
}

/// @brief Initialize traversal node for distance computation between one shape and one mesh, given the current transforms
template<typename S, typename BV, typename NarrowPhaseSolver>
bool initialize(ShapeMeshDistanceTraversalNode<S, BV, NarrowPhaseSolver>& node,
                const S& model1, const Transform3f& tf1,
                BVHModel<BV>& model2, Transform3f& tf2,
                const NarrowPhaseSolver* nsolver,
                const DistanceRequest& request,
                DistanceResult& result,
                bool use_refit = false, bool refit_bottomup = false)
{
  if(model2.getModelType() != BVH_MODEL_TRIANGLES)
    return false;
  
  if(!tf2.isIdentity())
  {
    std::vector<Vec3f> vertices_transformed(model2.num_vertices);
    for(int i = 0; i < model2.num_vertices; ++i)
    {
      Vec3f& p = model2.vertices[i];
      Vec3f new_v = tf2.transform(p);
      vertices_transformed[i] = new_v;
    }

    model2.beginReplaceModel();
    model2.replaceSubModel(vertices_transformed);
    model2.endReplaceModel(use_refit, refit_bottomup);

    tf2.setIdentity();
  }

  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  node.vertices = model2.vertices;
  node.tri_indices = model2.tri_indices;

  computeBV(model1, tf1, node.model1_bv);
  
  return true;
}

/// @cond IGNORE
namespace details
{

template<typename BV, typename S, typename NarrowPhaseSolver, template<typename, typename> class OrientedNode>
static inline bool setupMeshShapeDistanceOrientedNode(OrientedNode<S, NarrowPhaseSolver>& node, 
                                                      const BVHModel<BV>& model1, const Transform3f& tf1,
                                                      const S& model2, const Transform3f& tf2,
                                                      const NarrowPhaseSolver* nsolver,
                                                      const DistanceRequest& request,
                                                      DistanceResult& result)
{
  if(model1.getModelType() != BVH_MODEL_TRIANGLES)
    return false;

  node.request = request;
  node.result = &result;

  node.model1 = &model1;
  node.tf1 = tf1;
  node.model2 = &model2;
  node.tf2 = tf2;
  node.nsolver = nsolver;

  computeBV(model2, tf2, node.model2_bv);

  node.vertices = model1.vertices;
  node.tri_indices = model1.tri_indices;

  return true;
}
}
/// @endcond