SparseBuffer.h

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/*

             *
            ***
           *****
   *********************       Mercenaries Engineering SARL
     *****************              Copyright (C) 2018
       *************
         *********        http://www.mercenaries-engineering.com
        ***********
       ****     ****
      **           **

*/
#pragma once

#include <gsl/span>

#include "Value.h"

  namespace maquina
  {
    template<typename T>
    class SparseBufferConst : public Value
    {
    public:
      typedef T value_type;


      SparseBufferConst(const Value &v);
      static bool can_cast(const Value &v);

      bool empty() const;

      size_t size() const;

      gsl::span<const uint32_t> read_indices() const;

      gsl::span<const value_type> read_values() const;

      SparseBufferConst(std::shared_ptr<Impl> impl) : Value(impl) {}
    protected:
      SparseBufferConst();
    };

    template<typename T>
    class SparseBuffer : public SparseBufferConst<T>
    {
    public:
      typedef T value_type;

      SparseBuffer();
      SparseBuffer(const gsl::span<uint32_t>& indices, const gsl::span<value_type>& values);

      void resize(size_t size);

      gsl::span<uint32_t> write_indices();

      gsl::span<value_type> write_values();

      void compact(const T& _default_value);
      void expand(size_t t, const T& _default_value);

      SparseBuffer(std::shared_ptr<Impl> impl) : SparseBufferConst<T>(impl) {}
    };

    template<typename T>
    SparseBuffer<T> duplicate(const SparseBufferConst<T>& a)
    {
      return a.duplicate()._impl;
    }

    typedef SparseBufferConst<int32_t> SparseBufferConstInt32;
    typedef SparseBufferConst<uint8_t> SparseBufferConstUInt8;
    typedef SparseBufferConst<uint32_t> SparseBufferConstUInt32;
    typedef SparseBufferConst<float> SparseBufferConstFloat;
    typedef SparseBufferConst<double> SparseBufferConstDouble;
    typedef SparseBufferConst<Imath::V2f> SparseBufferConstV2f;
    typedef SparseBufferConst<Imath::V3f> SparseBufferConstV3f;
    typedef SparseBufferConst<Imath::V4f> SparseBufferConstV4f;
    typedef SparseBufferConst<Imath::V2i> SparseBufferConstV2i;
    typedef SparseBufferConst<Imath::V3i> SparseBufferConstV3i;
    typedef SparseBufferConst<Imath::V4i> SparseBufferConstV4i;
    typedef SparseBufferConst<Imath::M44f> SparseBufferConstM44f;
    typedef SparseBufferConst<Imath::Box3f> SparseBufferConstBox3f;

#ifndef kernel_EXPORTS
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<int32_t>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<uint8_t>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<uint32_t>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<float>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<double>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::V2f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::V3f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::V4f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::V2i>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::V3i>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::V4i>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::M44f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBufferConst<Imath::Box3f>;
#endif // kernel_EXPORTS

    typedef SparseBuffer<int32_t> SparseBufferInt32;
    typedef SparseBuffer<uint8_t> SparseBufferUInt8;
    typedef SparseBuffer<uint32_t> SparseBufferUInt32;
    typedef SparseBuffer<float> SparseBufferFloat;
    typedef SparseBuffer<double> SparseBufferDouble;
    typedef SparseBuffer<Imath::V2f> SparseBufferV2f;
    typedef SparseBuffer<Imath::V3f> SparseBufferV3f;
    typedef SparseBuffer<Imath::V4f> SparseBufferV4f;
    typedef SparseBuffer<Imath::V2i> SparseBufferV2i;
    typedef SparseBuffer<Imath::V3i> SparseBufferV3i;
    typedef SparseBuffer<Imath::V4i> SparseBufferV4i;
    typedef SparseBuffer<Imath::M44f> SparseBufferM44f;
    typedef SparseBuffer<Imath::Box3f> SparseBufferBox3f;

#ifndef kernel_EXPORTS
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<int32_t>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<uint8_t>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<uint32_t>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<float>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<double>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::V2f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::V3f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::V4f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::V2i>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::V3i>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::V4i>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::M44f>;
    MAQUINA_EXTERN_TEMPLATE class MAQUINA_EXPORT SparseBuffer<Imath::Box3f>;
#endif // kernel_EXPORTS
  }