MeshResourceLoader_PLY.hpp

#pragma once
#ifndef __H__OCULAR_GRAPHICS_MESH_RESOURCE_LOADER_PLY__H__
#define __H__OCULAR_GRAPHICS_MESH_RESOURCE_LOADER_PLY__H__

#include "Graphics/Mesh/MeshLoaders/MeshResourceLoader.hpp"
#include "PLYEnums.hpp"

#include <list>
#include <fstream>

//------------------------------------------------------------------------------------------

namespace Ocular
{
    namespace Graphics
    {
        class PLYParser;
        class PLYElementParser;
        class PLYElementListParser;

        class MeshResourceLoader_PLY : public MeshResourceLoader
        {
        public:

            MeshResourceLoader_PLY();
            virtual ~MeshResourceLoader_PLY();

        protected:

            virtual bool readFile(Core::File const& file, std::vector<Graphics::Vertex>& vertices, std::vector<uint32_t>& indices, uint32_t& numVertices, uint32_t& numIndices, Math::Vector3f& min, Math::Vector3f& max) override;

            bool parseHeader(std::ifstream& stream);
            bool parseElement(std::ifstream& stream, std::string& line, PLYParser** parser);
            bool parseElementNameAndCount(std::string const& line, PLYParser* parser) const;
            bool parseProperty(std::string const& line, PLYElementParser* parser) const;
            bool parsePropertyList(std::string const& line, PLYElementListParser* parser) const;

            bool parseBody(std::ifstream& stream, std::vector<Graphics::Vertex>& vertices, std::vector<uint32_t>& indices, uint32_t& numVertices, uint32_t& numIndices, Math::Vector3f& min, Math::Vector3f& max);

            bool isValidPLYFile(std::ifstream& stream) const;
            bool isComment(std::string const& line) const;
            bool isElement(std::string const& line) const;
            bool isElementList(std::string const& line) const;
            bool isFormatASCII(std::string const& line) const;

            PLYPropertyType toPropertyType(std::string const& str) const;
            PLYElementType toElementType(std::string const& str) const;

            void reserveVectorSpace(std::vector<Graphics::Vertex>& vertices, std::vector<uint32_t>& indices) const;

        private:

            std::list<PLYParser*> m_Parsers;
        };
    }
}
//------------------------------------------------------------------------------------------

#endif