LinePrimitive.h

/***********************************************************************
LinePrimitive - Class for lines extracted from point clouds by
intersecting two plane primitives.
Copyright (c) 2008-2012 Oliver Kreylos

This file is part of the LiDAR processing and analysis package.

The LiDAR processing and analysis package 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 2 of the License, or (at your option) any later version.

The LiDAR processing and analysis package 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 the LiDAR processing and analysis package; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA
***********************************************************************/

#ifndef LINEPRIMITIVE_INCLUDED
#define LINEPRIMITIVE_INCLUDED

#include <Geometry/Point.h>
#include <Geometry/Vector.h>

#include "Primitive.h"

/* Forward declarations: */
namespace Cluster {
class MulticastPipe;
}
class PlanePrimitive;

class LinePrimitive:public Primitive
	{
	/* Elements: */
	protected:
	Point center; // Point on the line, halfway between the lower and upper boundary
	Vector axis; // Normalized line direction
	Scalar length; // Line length
	
	/* Constructors and destructors: */
	protected:
	LinePrimitive(void) // Dummy constructor
		{
		};
	public:
	LinePrimitive(const PlanePrimitive* p1,const PlanePrimitive* p2,const Vector& translation,Cluster::MulticastPipe* pipe); // Creates line primitive by intersecting the two given plane primitives; writes result to given pipe if !=0
	LinePrimitive(const LidarOctree* octree,const Vector& translation,Cluster::MulticastPipe* pipe); // Creates line by processing selected points from the given octree; writes result to given pipe if !=0
	LinePrimitive(Cluster::MulticastPipe* pipe); // Creates line by reading line data from given pipe
	LinePrimitive(IO::File& file,const Vector& translation); // Reads a line primitive from a binary file
	
	/* Methods: */
	virtual Scalar pick(const Point& pickPoint,Scalar maxPickDistance) const;
	virtual void glRenderAction(GLContextData& contextData) const;
	virtual void write(IO::File& file,const Vector& translation) const;
	const Point& getCenter(void) const // Returns the line's center point
		{
		return center;
		};
	const Vector& getAxis(void) const // Returns the line's axis direction
		{
		return axis;
		};
	};

#endif