Cyd
2b8ca921cb
Complete disaster-recovery snapshot: engine/game source, game data assets, VC6 toolchain + DX SDKs, build outputs, deployed game, and _UNUSED archive. Large binaries in Git LFS; text preserved byte-for-byte (core.autocrlf=false, no eol attributes). See RECOVERY.md for the one-clone rebuild procedure.
83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
#ifndef QUADEDGE_INCLUDED // -*- C++ -*-
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#define QUADEDGE_INCLUDED
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#include "Geom.hpp"
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class Triangle;
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class Edge : public Labelled {
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private:
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Edge *qnext, *qprev;
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Edge(Edge *prev);
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protected:
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Vec2 *data;
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Edge *next;
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Triangle *lface;
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public:
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Edge();
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Edge(const Edge&);
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~Edge();
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//
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// Primitive methods
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//
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Edge *Onext() const { return next; }
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Edge *Sym() const { return qnext->qnext; }
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Edge *Rot() const { return qnext; }
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Edge *invRot() const { return qprev; }
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//
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// Synthesized methods
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//
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Edge *Oprev() const { return Rot()->Onext()->Rot(); }
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Edge *Dnext() const { return Sym()->Onext()->Sym(); }
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Edge *Dprev() const { return invRot()->Onext()->invRot(); }
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Edge *Lnext() const { return invRot()->Onext()->Rot(); }
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Edge *Lprev() const { return Onext()->Sym(); }
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Edge *Rnext() const { return Rot()->Onext()->invRot(); }
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Edge *Rprev() const { return Sym()->Onext(); }
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Vec2& Org() const { return *data; }
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Vec2& Dest() const { return *Sym()->data; }
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Triangle *Lface() const { return lface; }
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void set_Lface(Triangle *t) { lface = t; }
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void EndPoints(Vec2& org, Vec2& dest)
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{
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data = &org;
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Sym()->data = &dest;
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}
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//
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// The fundamental topological operator
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friend void splice(Edge *a, Edge *b);
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};
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inline bool rightOf(const Vec2& x, const Edge *e)
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{
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return rightOf(x, e->Org(), e->Dest());
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}
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inline bool leftOf(const Vec2& x, const Edge *e)
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{
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return leftOf(x, e->Org(), e->Dest());
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}
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#ifdef IOSTREAMH
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inline ostream& operator<<(ostream& out, const Edge *e)
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{
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return out << "{ " << e->Org() << " ---> " << e->Dest() << " }";
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}
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#endif
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#endif
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