#include "ImportObjExample.h"
#include <vector>
#include "../OpenGLWindow/GLInstancingRenderer.h"
#include"Wavefront/tiny_obj_loader.h"
#include "../OpenGLWindow/GLInstanceGraphicsShape.h"
#include "btBulletDynamicsCommon.h"
#include "../OpenGLWindow/SimpleOpenGL3App.h"
#include "Wavefront2GLInstanceGraphicsShape.h"


#include "../CommonInterfaces/CommonRigidBodyBase.h"


class ImportObjSetup : public CommonRigidBodyBase
{

public:
    ImportObjSetup(struct GUIHelperInterface* helper);
    virtual ~ImportObjSetup();
    
	virtual void initPhysics();

	virtual void resetCamera()
	{
		float dist = 50;
		float pitch = 61;
		float yaw = 18;
		float targetPos[3]={-15,-15,47};
		m_guiHelper->resetCamera(dist,pitch,yaw,targetPos[0],targetPos[1],targetPos[2]);
	}

};

ImportObjSetup::ImportObjSetup(struct GUIHelperInterface* helper)
:CommonRigidBodyBase(helper)
{
    
}

ImportObjSetup::~ImportObjSetup()
{
    
}







void ImportObjSetup::initPhysics()
{
	m_guiHelper->setUpAxis(2);
	this->createEmptyDynamicsWorld();
	m_guiHelper->createPhysicsDebugDrawer(m_dynamicsWorld);
	m_dynamicsWorld->getDebugDrawer()->setDebugMode(btIDebugDraw::DBG_DrawWireframe);
	const char* fileName = "samurai_monastry.obj";
    char relativeFileName[1024];
	const char* prefix[]={"./data/","../data/","../../data/","../../../data/","../../../../data/"};
	int prefixIndex=-1;
	{
		
		int numPrefixes = sizeof(prefix)/sizeof(char*);
		
		for (int i=0;i<numPrefixes;i++)
		{
			FILE* f = 0;
			sprintf(relativeFileName,"%s%s",prefix[i],fileName);
			f = fopen(relativeFileName,"r");
			if (f)
			{
				fclose(f);
				prefixIndex = i;
				break;
			}
		}
	}
	
	if (prefixIndex<0)
		return;
	
	btVector3 shift(0,0,0);
	btVector3 scaling(10,10,10);
//	int index=10;
	
	{
		
		std::vector<tinyobj::shape_t> shapes;
		std::string err = tinyobj::LoadObj(shapes, relativeFileName, prefix[prefixIndex]);
		
		GLInstanceGraphicsShape* gfxShape = btgCreateGraphicsShapeFromWavefrontObj(shapes);
		
		btTransform trans;
		trans.setIdentity();
		trans.setRotation(btQuaternion(btVector3(1,0,0),SIMD_HALF_PI));
		
		btVector3 position = trans.getOrigin();
		btQuaternion orn = trans.getRotation();
		
		btVector3 color(0,0,1);
		
		
		int shapeId = m_guiHelper->getRenderInterface()->registerShape(&gfxShape->m_vertices->at(0).xyzw[0], gfxShape->m_numvertices, &gfxShape->m_indices->at(0), gfxShape->m_numIndices);
		
		//int id = 
		m_guiHelper->getRenderInterface()->registerGraphicsInstance(shapeId,position,orn,color,scaling);

	
	}
}

 CommonExampleInterface*    ImportObjCreateFunc(struct CommonExampleOptions& options)
 {
	 return new ImportObjSetup(options.m_guiHelper);
 }