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hyperrogue/rogueviz/spiral.cpp
2021-04-07 18:13:45 +02:00

127 lines
2.8 KiB
C++

// Hyperbolic Rogue
// Copyright (C) 2011-2016 Zeno Rogue, see 'hyper.cpp' for details
// example commandline:
// -spiral 2,10000 -spiraledge 0,2 -spiraledge 1,1 -lab -spiralcolor 2 FF4040FF
#include "rogueviz.h"
namespace rogueviz {
namespace spiral {
ld mul;
transmatrix at(double d) {
return spin(log(d) * 2 * M_PI / log(mul)) * xpush(log(d));
}
void place(int N, ld _mul) {
mul = _mul;
init(RV_GRAPH | RV_HAVE_WEIGHT | RV_INVERSE_WEIGHT);
rv_hook(hooks_alt_edges, 100, spiral_altedge);
rv_hook(hooks_frame, 0, drawExtra);
weight_label = "extent";
vdata.resize(N);
for(int i=0; i<N; i++) {
vertexdata& vd = vdata[i];
double d = i + 1;
transmatrix h = at(d);
createViz(i, cwt.at, h);
vd.name = its(i+1);
virtualRebase(vd.m);
vd.cp = dftcolor;
}
storeall();
}
void edge(ld shift, ld mul) {
int N = isize(vdata);
auto t = add_edgetype(fts(shift)+" " + fts(mul));
t->visible_from = 1. / (N+.5);
for(int i=0; i<N; i++) {
int i0 = i+1;
int j0 = int(i0 * mul + shift) - 1;
if(j0 >= 0 && j0 < N) addedge(i, j0, 1/(i+1), false, t);
}
}
void color(ld start, ld period, colorpair c) {
int N = isize(vdata);
int maxw = N;
while(start >= 0 && start < N) {
int i = int(start);
vdata[i].cp = c;
start += period;
maxw--; if(maxw <= 0) break;
}
}
}
bool spiral_altedge(edgeinfo* ei, bool store) {
bool onspiral = abs(ei->i - ei->j) == 1;
if(onspiral) {
const int prec = 20;
if(store) ei->orig = currentmap->gamestart();
transmatrix T = ggmatrix(currentmap->gamestart());
hyperpoint l1 = tC0(spiral::at(1+ei->i));
if(!store) l1 = T * l1;
for(int z=1; z<=prec; z++) {
hyperpoint l2 = tC0(spiral::at(1+ei->i+(ei->j-ei->i) * z / (prec+.0)));
if(!store)
queueline(l1, T*l2, col, vid.linequality).prio = PPR::STRUCT0;
else
storeline(ei->prec, l1, l2);
l1 = l2;
}
return true;
}
return false;
}
auto hooks =
addHook(hooks_args, 100, [] {
using namespace arg;
if(argis("-spiral")) {
PHASE(3);
ld mul = 2;
int N = 1000;
shift(); sscanf(argcs(), LDF ",%d", &mul, &N);
spiral::place(N, mul);
return 0;
}
else if(argis("-spiraledge")) {
PHASE(3);
ld shft = 1;
ld mul = 1;
shift(); sscanf(argcs(), LDF "," LDF, &shft, &mul);
spiral::edge(shft, mul);
return 0;
}
else if(argis("-spiralcolor")) {
PHASE(3);
ld period = 1;
ld start = 1;
shift(); sscanf(argcs(), LDF "," LDF, &period, &start);
start--;
shift();
spiral::color(start, period, parse(args()));
return 0;
}
return 1;
});
}}