/*

 * serialize.cc: object serialization functions

 *

 * This file is part of Pyrit Ray Tracer.

 *

 * Copyright 2008  Radek Brich

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to deal

 * in the Software without restriction, including without limitation the rights

 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

 * copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

 * THE SOFTWARE.

 */

#include "serialize.h"

#include <vector>

#include <string>

#include <sstream>

Indexer vertex_index, shape_index;

vector<Vertex*> vertices;

void resetSerializer()

{

	vertex_index.reset();

	shape_index.reset();

	vertices.clear();

}

bool Indexer::get(void *o, int &retidx)

{

	map <void *, int>::iterator i;

	i = indexmap.find(o);

	if (i == indexmap.end())

	{

		retidx = index++;

		indexmap[o] = retidx;

		return false;

	}

	else

	{

		retidx = i->second;

		return true;

	}

}

Shape *loadShape(istream &st, Material *mat)

{

	string s;

	istringstream is;

	for (;;)

	{

		getline(st, s, ',');

		trim(s);

		// Vertex

		if (s.compare("(v") == 0)

		{

			Vector P;

			st >> P;

			getline(st, s, ')');

			vertices.push_back(new Vertex(P));

			getline(st, s, ',');

			continue;

		}

		// NormalVertex

		if (s.compare("(vn") == 0)

		{

			Vector P,N;

			st >> P;

			getline(st, s, ',');

			st >> N;

			getline(st, s, ')');

			vertices.push_back(new NormalVertex(P,N));

			getline(st, s, ',');

			continue;

		}

		// Triangle

		if (s.compare("(t") == 0)

		{

			int a,b,c;

			st >> a;

			getline(st, s, ',');

			st >> b;

			getline(st, s, ',');

			st >> c;

			getline(st, s, ')');

			return new Triangle(vertices[a], vertices[b], vertices[c], mat);

		}

		// box

		if (s.compare("(box") == 0)

		{

			Vector L,H;

			st >> L;

			getline(st, s, ',');

			st >> H;

			getline(st, s, ')');

			return new Box(L, H, mat);

		}

		// Sphere

		if (s.compare("(sphere") == 0)

		{

			Vector center;

			Float radius;

			st >> center;

			getline(st, s, ',');

			st >> radius;

			getline(st, s, ')');

			return new Sphere(center, radius, mat);

		}

		// else...

		return NULL;

	}

}

ostream & operator<<(ostream &st, Shape &o)

{

	return o.dump(st);

}

ostream & operator<<(ostream &st, Vertex &o)

{

	return o.dump(st);

}

ostream & operator<<(ostream &st, Container &o)

{

	return o.dump(st);

}