curve.h

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/*
 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice including the dates of first publication and
 * either this permission notice or a reference to
 * http://oss.sgi.com/projects/FreeB/
 * shall be included in all copies or substantial portions of the Software.
 *
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 */
 
/*
 * curve.h
 *
 */
 
#ifndef __glucurve_h_
#define __glucurve_h_
 
#include "types.h"
#include "defines.h"
 
class Mapdesc;
class Quilt;
 
 
class Curve {
public:
friend class Curvelist;
                Curve( Quilt *, REAL, REAL, Curve * );
                Curve( Curve&, REAL, Curve * );
    Curve *     next;
private:
    Mapdesc *       mapdesc;
    int         stride;
    int             order;
    int         cullval;
    int         needsSampling;
    REAL        cpts[MAXORDER*MAXCOORDS];
    REAL        spts[MAXORDER*MAXCOORDS];
    REAL        stepsize;
    REAL        minstepsize;
    REAL        range[3];
 
    void        clamp( void );
    void        setstepsize( REAL );
    void        getstepsize( void );
    int         cullCheck( void );
    int         needsSamplingSubdivision( void );
};
#endif /* __glucurve_h_ */