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ddgchull.h

This is the verbatim text of the ddgchull.h include file.

/*
    Copyright (C) 1997, 1998, 1999, 2000 by Alex Pfaffe
        (Digital Dawn Graphics Inc)
  
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
  
    This library 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
    Library General Public License for more details.
  
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _ddgCHull_Class_
#define _ddgCHull_Class_

#include "util/ddg.h"
#include "math/ddgvec.h"
class ddgBBox3;
class ddgPlane2;
class ddgRect2;
class ddgPlane3;
class ddgPrism3;
class ddgTriangle3;

enum ddgInside { ddgOUT=0, ddgPART=1, ddgIN=2, ddgUNDEF = 4};

class ddgCHullSet;
class WEXP ddgCHull3 {
public:
        ddgPlane3       *planes;
        int                     noPlanes;
        ddgCHullSet     *subhulls;
        ddgCHull3(void) : planes(0), noPlanes(0), subhulls(0) {}
        ddgCHull3(ddgPlane3 *p, int np) : planes(p), noPlanes(np), subhulls(0) {}
        ddgInside clip( ddgBBox3 *bbox, bool occluder = false);
        ddgInside clip( ddgPrism3 *prism, bool occluder = false);
        ddgInside clip( ddgTriangle3 *triangle, bool occluder = false);
};

class WEXP ddgCHullSet {
public:
        ddgCHull3       *_hulls;
        int                     _noVolumes;
        ddgCHullSet( int nv );
        ~ddgCHullSet(void);
        ddgInside clip( ddgBBox3 *bbox, bool occluder = false);
        ddgInside clip( ddgTriangle3 *tri, bool occluder = false);
        ddgInside clip( ddgPrism3 *tri, bool occluder = false);

};


class WEXP ddgCHull2 {
public:
        unsigned short noLines;
        ddgPlane2               *lines;
        ddgCHull2(void) : lines(0), noLines(0) {}
        ddgCHull2(ddgPlane2 *l, int nl) : lines(l), noLines(nl) {}
        ddgInside clip( ddgRect2 *rect, bool occluder = false);
};
#endif

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