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/*
   model/collisionmesh.cc
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#include "sys/sys.h"
#include "model/collisionmesh.h"

namespace model {

CollisionMesh::CollisionMesh()
{
	collisionmesh_type = FragmentGroup::None;
	collisionmesh_size = 0;
	// btTriangleMesh (bool use32bitIndices=true, bool use4componentVertices=true)
	collisionmesh_triangles = new btTriangleMesh(true, false);
	collisionmesh_owns_triangles = true;
	
	collisionmesh_scale = 1.0f;
	collisionmesh_speed = 0.0f;
	collisionmesh_distance = 0.0f;
}

CollisionMesh::CollisionMesh(const CollisionMesh &other)
{
	collisionmesh_type = other.type();
	collisionmesh_size = other.size();
	collisionmesh_triangles = other.collisionmesh_triangles;
	collisionmesh_owns_triangles = false;
	
	collisionmesh_scale = other.scale();
	collisionmesh_speed = other.speed();
	collisionmesh_distance = other.distance();
}
CollisionMesh::~CollisionMesh()
{
	if (collisionmesh_owns_triangles)
		delete collisionmesh_triangles;
	
	collisionmesh_triangles = 0;
}

void CollisionMesh::set_params(const FragmentGroup *group)
{
	collisionmesh_type = group->type();
	collisionmesh_location.assign(group->location());
	collisionmesh_axis.assign(group->axis());
	collisionmesh_scale = group->scale();
	collisionmesh_speed = group->speed();
	collisionmesh_distance = group->distance();
	
}

void CollisionMesh::add_triangle(const math::Vector3f & v0, const math::Vector3f & v1, const math::Vector3f & v2)
{
	collisionmesh_triangles->addTriangle(
		to_btVector3(v0),
		to_btVector3(v1),
		to_btVector3(v2),
		true
	);
	collisionmesh_size++;
}

} // namespace model