bbox.h

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013 Santeri Piippo
 *  
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef BBOX_H
#define BBOX_H

#include "common.h"
#include "types.h"

// =============================================================================
// bbox
//
// The bounding box is the box that encompasses a given set of objects. The
// global instance g_BBox is the bbox for the model we have open.
// v0 is the minimum vertex, v1 is the maximum vertex.
// =============================================================================
class bbox {
public:
	bbox ();
	void reset ();
	void calculate ();
	double size () const;
	void calcObject (LDObject* obj);
	void calcVertex (vertex v);
	vertex center () const;
	bool empty () const;
	
	bbox& operator<< (LDObject* obj) {
		calcObject (obj);
		return *this;
	}
	
	bbox& operator<< (vertex& v) {
		calcVertex (v);
		return *this;
	}
	
	const vertex& v0 () { return m_v0; }
	const vertex& v1 () { return m_v1; }
	
private:
	vertex m_v0, m_v1;
	bool m_empty;
};

#endif // BBOX_H