source: GTP/trunk/App/Demos/Vis/FriendlyCulling/src/ResourceManager.h @ 3038

#ifndef __ResourceManager_H__
#define __ResourceManager_H__


#include <string>
#include <iostream>
#include <fstream>
#include <map>
#include "common.h"



class igzstream;


namespace CHCDemoEngine
{

class SceneEntity;
class Material;
class Geometry;
class Texture;
class Matrix4x4;
class Transform3;
class ShaderProgram;
class GPUProgramParameters;


/** Loads a scene and also handles the cleanup
*/
class ResourceManager
{
public:

        /** Returns the resource manager as a singleton.
        */
        static ResourceManager *GetSingleton()
        {
                if (!sResourceManager)
                {
                        sResourceManager = new ResourceManager();
                }

                return sResourceManager;
        }

        /** We also want full control over the delete.
        */
        static void DelSingleton()
        {
                DEL_PTR(sResourceManager);
        }

        /** Loads a model
        */
        bool Load(const std::string &filename, SceneEntityContainer &geometry);

        int GetNumEntities() const { return (int)mSceneEntities.size(); }

        /** Creates new gpu program parameters.
        */
        GPUProgramParameters *CreateGPUProgramParameters(ShaderProgram *p);
        /** Creates a new shader program.
        */
        ShaderProgram *CreateFragmentProgram(const std::string &filename, const std::string &funcName);
        ShaderProgram *CreateVertexProgram(const std::string &filename, const std::string &funcName);

        void EnableFragmentProfile();
        void EnableVertexProfile();

        void DisableFragmentProfile();
        void DisableVertexProfile();


protected:
        
        /** Default constructor. The constructor is protected
                to have control over instantiation using the 
                singleton pattern.
        */
        ResourceManager();

        ~ResourceManager();


        void InitCg();

        void LoadTextures(igzstream &str);
        void LoadShapes(igzstream &str);
        void LoadSceneEntities(igzstream &str, SceneEntityContainer &entities);

        SceneEntity *LoadSceneEntity(igzstream &str);
        Material *LoadMaterial(igzstream &str);
        Geometry *LoadGeometry(igzstream &str);

        std::map<int, Texture *> mTextureTable;
        std::map<int, Material *> mMaterialTable;
        std::map<int, Geometry *> mGeometryTable;
        //std::map<int, Shape *> mShapesTable;


        /////////////
        //-- these are kept to be able to delete these resources afterwards

        TextureContainer mTextures;
        MaterialContainer mMaterials;
        GeometryContainer mGeometry;
        TransformContainer mTrafos;
        GPUParamContainer mGPUParameters;
        ShaderContainer mShaders;
        ShapeContainer mShapes;
        LODContainer mLODs;

        ////////

        /// the scene entities

        SceneEntityContainer mSceneEntities;


        ////////////
        //-- default shader programs

        ShaderProgram *mMrtDefaultVertexProgram;
        ShaderProgram *mMrtDefaultFragmentProgram;
        ShaderProgram *mMrtDefaultFragmentTexProgram;


private:

        static ResourceManager *sResourceManager;
};


}
#endif