// ---------------------------------------------------------------------------------//
// Copyright (c) 2013, Regents of the University of Pennsylvania                    //
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// Contact Tiantian Liu (ltt1598@gmail.com) if you have any questions.              //
//----------------------------------------------------------------------------------//

#ifndef _SCENE_H_
#define _SCENE_H_

#include <vector>

#include "openGL_headers.h"
#include "math_headers.h"
#include "global_headers.h"
#include "primitive.h"
#include "tinyxml2.h"

class Scene;
class XMLSceneVisitor;

class Scene
{
public:
    Scene(const char* file_name);
    virtual ~Scene();

    void LoadFromFile(const char* file_name);
    virtual void Draw(const VBO& vbos);
    void InsertPrimitve(Primitive* const new_primitive);

    bool StaticIntersectionTest(const EigenVector3& p, EigenVector3& normal, ScalarType& dist);

protected:
    std::vector<Primitive*> m_primitives;

private:
};

class XMLSceneVisitor : public tinyxml2::XMLVisitor
{
public:
    XMLSceneVisitor(Scene* const scene);
    XMLSceneVisitor(const XMLSceneVisitor& other);
    virtual ~XMLSceneVisitor();

    virtual bool VisitEnter(const tinyxml2::XMLElement& element, const tinyxml2::XMLAttribute* attribute);
    virtual bool VisitExit( const tinyxml2::XMLElement& element);

protected:
    Scene* const m_scene;
    Primitive* m_current;
};

#endif