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56 lines
1.2 KiB
C++
56 lines
1.2 KiB
C++
// Hyperbolic Rogue -- infinite-order tessellations
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// Copyright (C) 2011-2019 Zeno Rogue, see 'hyper.cpp' for details
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/** \file inforder3.cpp
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* \brief infinite-order tessellations
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*
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* very simple
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*/
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#include "hyper.h"
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namespace hr {
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EX namespace inforder {
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EX bool in() { return S3 >= OINF; }
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EX bool mixed() { return cgflags & qINFMIXED; }
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EX int alt_degree;
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struct hrmap_inforder : hrmap_hyperbolic {
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heptagon *create_step(heptagon *h, int direction) {
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int deg = h->type;
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if(mixed()) deg = 7 - deg;
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auto h1 = tailored_alloc<heptagon> (deg);
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bool par = h->s == hsA && direction == 0;
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h->c.connect(direction, h1, par ? 1 + hrand(2) : 0, false);
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h1->alt = NULL;
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h1->s = hsA;
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h1->cdata = NULL;
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h1->distance = h->distance + (par ? -1 : 1);
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h1->c7 = newCell(deg, h1);
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return h1;
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}
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};
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EX hrmap* new_map() { return new hrmap_inforder; }
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EX int celldistance(cell *c1, cell *c2) {
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int d = 0;
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while(true) {
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if(c1 == c2) return d;
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else if(c1->master->distance >= c2->master->distance) c1 = c1->move(0), d++;
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else c2 = c2->move(0), d++;
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}
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}
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EX }
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} |