assimp/code/AssetLib/Blender/BlenderIntermediate.h

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

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  following disclaimer.

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*/

/** @file  BlenderIntermediate.h
 *  @brief Internal utility structures for the BlenderLoader. It also serves
 *    as master include file for the whole (internal) Blender subsystem.
 */
#ifndef INCLUDED_AI_BLEND_INTERMEDIATE_H
#define INCLUDED_AI_BLEND_INTERMEDIATE_H

#include "BlenderLoader.h"
#include "BlenderDNA.h"
#include "BlenderScene.h"
#include <deque>
#include <assimp/material.h>

struct aiTexture;

namespace Assimp {
namespace Blender {

    // --------------------------------------------------------------------
    /** Mini smart-array to avoid pulling in even more boost stuff. usable with vector and deque */
    // --------------------------------------------------------------------
    template <template <typename,typename> class TCLASS, typename T>
    struct TempArray    {
        typedef TCLASS< T*,std::allocator<T*> > mywrap;

        TempArray() = default;

        ~TempArray () {
            for(T* elem : arr) {
                delete elem;
            }
        }

        void dismiss() {
            arr.clear();
        }

        mywrap* operator -> () {
            return &arr;
        }

        operator mywrap& () {
            return arr;
        }

        operator const mywrap& () const {
            return arr;
        }

        mywrap& get () {
            return arr;
        }

        const mywrap& get () const {
            return arr;
        }

        T* operator[] (size_t idx) const {
            return arr[idx];
        }

        T*& operator[] (size_t idx) {
            return arr[idx];
        }

    private:
        // no copy semantics
        void operator= (const TempArray&)  {
        }

        TempArray(const TempArray& /*arr*/) {
        }

    private:
        mywrap arr;
    };

#ifdef _MSC_VER
#   pragma warning(disable:4351)
#endif

    // As counter-intuitive as it may seem, a comparator must return false for equal values.
    // The C++ standard defines and expects this behavior: true if lhs < rhs, false otherwise.
    struct ObjectCompare {
        bool operator() (const Object* left, const Object* right) const {
            return ::strncmp(left->id.name, right->id.name, strlen( left->id.name ) ) < 0;
        }
    };

    // When keeping objects in sets, sort them by their name.
    typedef std::set<const Object*, ObjectCompare> ObjectSet;

    // --------------------------------------------------------------------
    /** ConversionData acts as intermediate storage location for
     *  the various ConvertXXX routines in BlenderImporter.*/
    // --------------------------------------------------------------------
    struct ConversionData
    {
        ConversionData(const FileDatabase& db)
            : sentinel_cnt()
            , next_texture()
            , db(db)
        {}

        // As counter-intuitive as it may seem, a comparator must return false for equal values.
        // The C++ standard defines and expects this behavior: true if lhs < rhs, false otherwise.
        struct ObjectCompare {
            bool operator() (const Object* left, const Object* right) const {
                return ::strncmp( left->id.name, right->id.name, strlen( left->id.name ) ) < 0;
            }
        };

        ObjectSet objects;

        TempArray <std::vector, aiMesh> meshes;
        TempArray <std::vector, aiCamera> cameras;
        TempArray <std::vector, aiLight> lights;
        TempArray <std::vector, aiMaterial> materials;
        TempArray <std::vector, aiTexture> textures;

        // set of all materials referenced by at least one mesh in the scene
        std::deque< std::shared_ptr< Material > > materials_raw;

        // counter to name sentinel textures inserted as substitutes for procedural textures.
        unsigned int sentinel_cnt;

        // next texture ID for each texture type, respectively
        unsigned int next_texture[aiTextureType_UNKNOWN+1];

        // original file data
        const FileDatabase& db;
    };
#ifdef _MSC_VER
#   pragma warning(default:4351)
#endif

// ------------------------------------------------------------------------------------------------
inline const char* GetTextureTypeDisplayString(Tex::Type t)
{
    switch (t)  {
    case Tex::Type_CLOUDS       :  return  "Clouds";
    case Tex::Type_WOOD         :  return  "Wood";
    case Tex::Type_MARBLE       :  return  "Marble";
    case Tex::Type_MAGIC        :  return  "Magic";
    case Tex::Type_BLEND        :  return  "Blend";
    case Tex::Type_STUCCI       :  return  "Stucci";
    case Tex::Type_NOISE        :  return  "Noise";
    case Tex::Type_PLUGIN       :  return  "Plugin";
    case Tex::Type_MUSGRAVE     :  return  "Musgrave";
    case Tex::Type_VORONOI      :  return  "Voronoi";
    case Tex::Type_DISTNOISE    :  return  "DistortedNoise";
    case Tex::Type_ENVMAP       :  return  "EnvMap";
    case Tex::Type_IMAGE        :  return  "Image";
    default:
        break;
    }
    return "<Unknown>";
}

} // ! Blender
} // ! Assimp

#endif // ! INCLUDED_AI_BLEND_INTERMEDIATE_H