/*

 * Pyrit Ray Tracer

 * file: container.cc

 *

 * Radek Brich, 2006-2007

 */

#include "common.h"

#include "container.h"

void Container::addShape(Shape* aShape)

{

	shapes.push_back(aShape);

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

		/* initialize bounding box */

		bbox = aShape->get_bbox();

	} else {

		/* adjust bounding box */

		BBox shapebb = aShape->get_bbox();

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

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

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

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

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

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

	}

};

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;

}