/* -*- C++ -*-
 * Copyright ©2004 Hugo Mills <hugo@carfax.org.uk>
 *
 * This software is distributed under the terms of the GNU GPL v3
 * For more information on the GPL, see the file COPYING or 
 * visit http://www.gnu.org/
 *
 * This software is distributed without warranty
 */

#ifndef XFMAP_POINTPROJECTED_H
#define XFMAP_POINTPROJECTED_H

#include "magellan/xfmap.h"

class XfMap_PointProjected : public XfMap
{
 public:
	XfMap_PointProjected(double p)
		: proj(p)
	{ 
		p1 = p+1;
		pp1 = p*p1;
		p12 = p1*p1;
		q = 1-p*p;
	}
	virtual ~XfMap_PointProjected() { }

	virtual bool f(dvec2&, const dvec3&) const;
	virtual bool g(dvec3&, const dvec2&) const;

	static XfMap* parser(
		ConfigLexer* lex,
		const std::string& type,
		const std::string& subtype = ""
		);

private:
	double proj;
	double p1, p12, pp1, q;
};

#endif