text: // ======================================================================== //
  // Copyright 2009-2018 Intel Corporation                                    //
  //                                                                          //
  // Licensed under the Apache License, Version 2.0 (the "License");          //
  // you may not use this file except in compliance with the License.         //
  // You may obtain a copy of the License at                                  //
  //                                                                          //
  //     http://www.apache.org/licenses/LICENSE-2.0                           //
  //                                                                          //
  // Unless required by applicable law or agreed to in writing, software      //
  // distributed under the License is distributed on an "AS IS" BASIS,        //
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
  // See the License for the specific language governing permissions and      //
  // limitations under the License.                                           //
  // ======================================================================== //
  
  #pragma once
  
  #include "primitive.h"
  
  namespace embree
  {
    struct Object
    {
      struct Type : public PrimitiveType 
      {
        const char* name() const;
        size_t sizeActive(const char* This) const;
        size_t sizeTotal(const char* This) const;
        size_t getBytes(const char* This) const;
      };
      static Type type;
  
    public:
  
      /* primitive supports multiple time segments */
      static const bool singleTimeSegment = false;
  
      /* Returns maximum number of stored primitives */
      static __forceinline size_t max_size() { return 1; }
  
      /* Returns required number of primitive blocks for N primitives */
      static __forceinline size_t blocks(size_t N) { return N; }
  
    public:
  
      /*! constructs a virtual object */
      Object (unsigned geomID, unsigned primID) 
      : _geomID(geomID), _primID(primID) {}
  
      __forceinline unsigned geomID() const {
        return _geomID;
      }
  
      __forceinline unsigned primID() const {
        return _primID;
      }
  
      /*! fill triangle from triangle list */
      __forceinline void fill(const PrimRef* prims, size_t& i, size_t end, Scene* scene)
      {
        const PrimRef& prim = prims[i]; i++;
        new (this) Object(prim.geomID(), prim.primID());
      }
  
      /*! fill triangle from triangle list */
      __forceinline LBBox3fa fillMB(const PrimRef* prims, size_t& i, size_t end, Scene* scene, size_t itime)
      {
        const PrimRef& prim = prims[i]; i++;
        const unsigned geomID = prim.geomID();
        const unsigned primID = prim.primID();
        new (this) Object(geomID, primID);
        AccelSet* accel = (AccelSet*) scene->get(geomID);
        return accel->linearBounds(primID,itime);
      }
  
      /*! fill triangle from triangle list */
      __forceinline LBBox3fa fillMB(const PrimRefMB* prims, size_t& i, size_t end, Scene* scene, const BBox1f time_range)
      {
        const PrimRefMB& prim = prims[i]; i++;
        const unsigned geomID = prim.geomID();
        const unsigned primID = prim.primID();
        new (this) Object(geomID, primID);
        AccelSet* accel = (AccelSet*) scene->get(geomID);
        return accel->linearBounds(primID,time_range);
      }
  
      /* Updates the primitive */
      __forceinline BBox3fa update(AccelSet* mesh) {
        return mesh->bounds(primID());
      }
  
    private:
      unsigned int _geomID;  //!< geometry ID
      unsigned int _primID;  //!< primitive ID
    };
  }
  