/*

 * container.cc: Container class

 *

 * This file is part of Pyrit Ray Tracer.

 *

 * Copyright 2007  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 "common.h"

#include "container.h"

#include "serialize.h"

void Container::addShape(Shape* aShape)

{

	const Float e = Eps;

	if (shapes.size() == 0) {

		/* initialize bounding box */

		bbox = aShape->get_bbox();

		const Vector3 E(e, e, e);

		bbox = BBox(bbox.L - E, bbox.H + E);

	} else {

		/* adjust bounding box */

		BBox shapebb = aShape->get_bbox();

		if (shapebb.L.x - e < bbox.L.x)  bbox.L.x = shapebb.L.x - e;

		if (shapebb.L.y - e < bbox.L.y)  bbox.L.y = shapebb.L.y - e;

		if (shapebb.L.z - e < bbox.L.z)  bbox.L.z = shapebb.L.z - e;

		if (shapebb.H.x + e > bbox.H.x)  bbox.H.x = shapebb.H.x + e;

		if (shapebb.H.y + e > bbox.H.y)  bbox.H.y = shapebb.H.y + e;

		if (shapebb.H.z + e > bbox.H.z)  bbox.H.z = shapebb.H.z + e;

	}

	shapes.push_back(aShape);

};

Shape *Container::nearest_intersection(const Shape *origin_shape, const Ray &ray,

        Float &nearest_distance)

{

	Shape *nearest_shape = NULL;

	ShapeList::iterator shape;

	for (shape = shapes.begin(); shape != shapes.end(); shape++)

		if (*shape != origin_shape && (*shape)->intersect(ray, nearest_distance))

			nearest_shape = *shape;

	return nearest_shape;

}

void Container::packet_intersection(const Shape **origin_shapes, const RayPacket &rays,

	Float *nearest_distances, Shape **nearest_shapes)

{

	for (int i = 0; i < 4; i++)

		nearest_shapes[i] = nearest_intersection(origin_shapes[i], rays[i],

			nearest_distances[i]);

}

ostream & Container::dump(ostream &st)

{

	st << "(container," << shapes.size();

	ShapeList::iterator shape;

	for (shape = shapes.begin(); shape != shapes.end(); shape++)

	{

		int idx;

		if (!shape_index.get(*shape, idx))

			st << "," << **shape;

	}

	return st << ")";

}