/*
* facet.h -- Utility classes for shaded surface plotting
*
* This file is part of ePiX, a C++ library for creating high-quality
* figures in LaTeX
*
* Version 1.1.7
* Last Change: July 08, 2007
*/
/*
* Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
* Andrew D. Hwang
* Department of Mathematics and Computer Science
* College of the Holy Cross
* Worcester, MA, 01610-2395, USA
*/
/*
* ePiX 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.
*
* ePiX 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 ePiX; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "triples.h"
#include "frame.h"
#include "path.h"
#include "Color.h"
#include "pen_data.h"
namespace ePiX {
class facet {
public:
// create quasi-planar region bounded by path segments in f(R)
facet(P f(double, double),
double u0, double v0, double du, double dv,
const unsigned int N1, const unsigned int N2);
facet(P f(double, double, double),
double u0, double v0, double w0,
double du, double dv, double dw,
const unsigned int N1, const unsigned int N2);
// for surfaces of rotation
facet(double f(double), double g(double),
double u0, double v0, double du, double dv,
const unsigned int N1, const unsigned int N2,
const frame& coords=frame());
facet(P f(double, double),
double u0, double v0, double du, double dv,
const unsigned int N1, const unsigned int N2, const Color&);
facet(P f(double, double, double),
double u0, double v0, double w0,
double du, double dv, double dw,
const unsigned int N1, const unsigned int N2, const Color&);
// for surfaces of rotation
facet(double f(double), double g(double),
double u0, double v0, double du, double dv,
const unsigned int N1, const unsigned int N2, const Color&,
const frame& coords=frame());
facet* clone() const;
double how_far() const;
bool front_facing() const;
void draw(int cull) const;
private:
Color m_tint;
pen_data m_line;
bool m_fill;
P pt1, pt2, pt3, pt4, center, direction, perp;
double distance;
path bd;
};
class by_distance {
public:
bool operator() (const facet&, const facet&);
bool operator() (const facet*, const facet*);
};
} // end of namespace