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.
96 lines
2.2 KiB
C++
96 lines
2.2 KiB
C++
#ifndef SUBDIVISION_INCLUDED // -*- C++ -*-
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#define SUBDIVISION_INCLUDED
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#include "Quadedge.hpp"
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class Subdivision;
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class Triangle : public Labelled {
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Edge *anchor;
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Triangle *next_face;
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public:
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Triangle(Edge *e, int t=0)
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{
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token = t;
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reshape(e);
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}
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Triangle *linkTo(Triangle *t) { next_face = t; return this; }
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Triangle *getLink() { return next_face; }
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Edge *getAnchor() { return anchor; }
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void dontAnchor(Edge *e);
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void reshape(Edge *e);
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virtual void update(Subdivision&); // called to update stuff
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const Vec2& point1() const { return anchor->Org(); }
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const Vec2& point2() const { return anchor->Dest(); }
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const Vec2& point3() const { return anchor->Lprev()->Org(); }
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};
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typedef void (*edge_callback)(Edge *, void *);
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typedef void (*face_callback)(Triangle&, void *);
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class Subdivision {
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private:
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Edge *startingEdge;
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Triangle *first_face;
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protected:
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void initMesh(const Vec2&, const Vec2&, const Vec2&, const Vec2&);
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Subdivision() { }
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Edge *makeEdge();
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Edge *makeEdge(Vec2& org, Vec2& dest);
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virtual Triangle *allocFace(Edge *e);
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Triangle& makeFace(Edge *e);
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void deleteEdge(Edge *);
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Edge *connect(Edge *a, Edge *b);
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void swap(Edge *e);
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//
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// Some random functions
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bool ccwBoundary(const Edge *e);
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bool onEdge(const Vec2&, Edge *);
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public:
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Subdivision(Vec2& a, Vec2& b, Vec2& c, Vec2& d) { initMesh(a,b,c,d); }
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//
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// virtual functions for customization
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virtual bool shouldSwap(const Vec2&, Edge *);
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bool isInterior(Edge *);
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Edge *spoke(Vec2&, Edge *e);
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void optimize(Vec2&, Edge *);
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Edge *locate(const Vec2& x) { return locate(x, startingEdge); }
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Edge *locate(const Vec2&, Edge *hint);
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Edge *insert(Vec2&, Triangle *t=NULL);
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void overEdges(edge_callback, void *closure=NULL);
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void overFaces(face_callback, void *closure=NULL);
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};
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#ifdef IOSTREAMH
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inline ostream& operator<<(ostream& out, Triangle& t)
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{
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return out << "Triangle("<< t.point1() << " " << t.point2() << " "
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<< t.point3() << ")";
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}
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#endif
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#endif
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