157 lines
7.4 KiB
C
157 lines
7.4 KiB
C
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/****************************************************************************
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**
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** Copyright (c) 2008-2020 C.B. Barber. All rights reserved.
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** $Id: //main/2019/qhull/src/libqhullcpp/QhullFacet.h#4 $$Change: 2963 $
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** $DateTime: 2020/06/03 19:31:01 $$Author: bbarber $
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**
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****************************************************************************/
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#ifndef QHULLFACET_H
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#define QHULLFACET_H
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#include "libqhull_r/qhull_ra.h"
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#include "libqhullcpp/QhullHyperplane.h"
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#include "libqhullcpp/QhullPoint.h"
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#include "libqhullcpp/QhullSet.h"
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#include "libqhullcpp/QhullPointSet.h"
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#include <ostream>
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namespace orgQhull {
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#//!\name Used here
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class Coordinates;
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class Qhull;
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class QhullFacetSet;
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class QhullRidge;
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class QhullVertex;
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class QhullVertexSet;
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#//!\name Defined here
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class QhullFacet;
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typedef QhullSet<QhullRidge> QhullRidgeSet;
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//! A QhullFacet is the C++ equivalent to Qhull's facetT*
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class QhullFacet {
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#//!\name Defined here
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public:
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typedef facetT * base_type; // for QhullVertexSet
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private:
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#//!\name Fields -- no additions (QhullFacetSet of facetT*)
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facetT * qh_facet; //!< Corresponding facetT, may be 0 for corner cases (e.g., *facetSet.end()==0) and tricoplanarOwner()
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QhullQh * qh_qh; //!< QhullQh/qhT for facetT, may be 0
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#//!\name Class objects
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static facetT s_empty_facet; // needed for shallow copy
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public:
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#//!\name Constructors
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QhullFacet() : qh_facet(&s_empty_facet), qh_qh(0) {}
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explicit QhullFacet(const Qhull &q);
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QhullFacet(const Qhull &q, facetT *f);
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explicit QhullFacet(QhullQh *qqh) : qh_facet(&s_empty_facet), qh_qh(qqh) {}
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QhullFacet(QhullQh *qqh, facetT *f) : qh_facet(f ? f : &s_empty_facet), qh_qh(qqh) {}
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// Creates an alias. Does not copy QhullFacet. Needed for return by value and parameter passing
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QhullFacet(const QhullFacet &other) : qh_facet(other.qh_facet ? other.qh_facet : &s_empty_facet), qh_qh(other.qh_qh) {}
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// Creates an alias. Does not copy QhullFacet. Needed for vector<QhullFacet>
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QhullFacet & operator=(const QhullFacet &other) { qh_facet= other.qh_facet ? other.qh_facet : &s_empty_facet; qh_qh= other.qh_qh; return *this; }
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~QhullFacet() {}
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#//!\name GetSet
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int dimension() const { return (qh_qh ? qh_qh->hull_dim : 0); }
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QhullPoint getCenter() { return getCenter(qh_PRINTpoints); }
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QhullPoint getCenter(qh_PRINT printFormat);
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facetT * getBaseT() const { return getFacetT(); } //!< For QhullSet<QhullFacet>
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// Do not define facetT(). It conflicts with return type facetT*
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facetT * getFacetT() const { return qh_facet; }
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bool hasNext() const { return (qh_facet->next != NULL && qh_facet->next != qh_qh->facet_tail); }
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bool hasPrevious() const { return (qh_facet->previous != NULL); }
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QhullHyperplane hyperplane() const { return QhullHyperplane(qh_qh, dimension(), qh_facet->normal, qh_facet->offset); }
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countT id() const { return (qh_facet ? qh_facet->id : static_cast<countT>(qh_IDunknown)); }
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QhullHyperplane innerplane() const;
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bool isValid() const { return qh_qh && qh_facet && qh_facet != &s_empty_facet; }
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bool isGood() const { return qh_facet && qh_facet->good; }
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bool isSimplicial() const { return qh_facet && qh_facet->simplicial; }
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bool isTopOrient() const { return qh_facet && qh_facet->toporient; }
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bool isTriCoplanar() const { return qh_facet && qh_facet->tricoplanar; }
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bool isUpperDelaunay() const { return qh_facet && qh_facet->upperdelaunay; }
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QhullFacet next() const { return QhullFacet(qh_qh, qh_facet->next); }
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QhullFacet nextFacet2d(QhullVertex *nextVertex) const;
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bool operator==(const QhullFacet &other) const { return qh_facet==other.qh_facet; }
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bool operator!=(const QhullFacet &other) const { return !operator==(other); }
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QhullHyperplane outerplane() const;
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QhullFacet previous() const { return QhullFacet(qh_qh, qh_facet->previous); }
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QhullQh * qh() const { return qh_qh; }
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void setFacetT(QhullQh *qqh, facetT *facet) { qh_qh= qqh; qh_facet= facet; }
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QhullFacet tricoplanarOwner() const;
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int visitId() const { return (qh_facet ? qh_facet->visitid : -1); }
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QhullPoint voronoiVertex();
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#//!\name value
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//! Undefined if c.size() != dimension()
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double distance(const Coordinates &c) const { return distance(c.data()); }
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double distance(const pointT *p) const { return distance(QhullPoint(qh_qh, const_cast<coordT *>(p))); }
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double distance(const QhullPoint &p) const { return hyperplane().distance(p); }
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double facetArea();
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#//!\name foreach
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// Can not inline. Otherwise circular reference
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QhullPointSet coplanarPoints() const;
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QhullFacetSet neighborFacets() const;
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QhullPointSet outsidePoints() const;
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QhullRidgeSet ridges() const;
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QhullVertexSet vertices() const;
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#//!\name IO
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struct PrintCenter{
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QhullFacet * facet; // non-const due to facet.center()
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const char * message;
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qh_PRINT print_format;
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PrintCenter(QhullFacet &f, qh_PRINT printFormat, const char * s) : facet(&f), message(s), print_format(printFormat){}
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};//PrintCenter
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PrintCenter printCenter(qh_PRINT printFormat, const char *message) { return PrintCenter(*this, printFormat, message); }
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struct PrintFacet{
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QhullFacet * facet; // non-const due to f->center()
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const char * message;
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explicit PrintFacet(QhullFacet &f, const char * s) : facet(&f), message(s) {}
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};//PrintFacet
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PrintFacet print(const char *message) { return PrintFacet(*this, message); }
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struct PrintFlags{
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const QhullFacet *facet;
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const char * message;
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PrintFlags(const QhullFacet &f, const char *s) : facet(&f), message(s) {}
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};//PrintFlags
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PrintFlags printFlags(const char *message) const { return PrintFlags(*this, message); }
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struct PrintHeader{
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QhullFacet * facet; // non-const due to f->center()
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PrintHeader(QhullFacet &f) : facet(&f) {}
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};//PrintHeader
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PrintHeader printHeader() { return PrintHeader(*this); }
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struct PrintRidges{
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const QhullFacet *facet;
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PrintRidges(QhullFacet &f) : facet(&f) {}
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};//PrintRidges
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PrintRidges printRidges() { return PrintRidges(*this); }
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};//class QhullFacet
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}//namespace orgQhull
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#//!\name Global
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std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintFacet &pr);
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std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintCenter &pr);
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std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintFlags &pr);
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std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintHeader &pr);
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std::ostream &operator<<(std::ostream &os, const orgQhull::QhullFacet::PrintRidges &pr);
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std::ostream &operator<<(std::ostream &os, orgQhull::QhullFacet &f); // non-const due to qh_getcenter()
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#endif // QHULLFACET_H
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