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gridlines now draw correctly for (ultra)ideal vertices

This commit is contained in:
Zeno Rogue 2022-04-26 16:12:43 +02:00
parent bff04eaf34
commit 61c3e41e8a
1 changed files with 23 additions and 2 deletions
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25
graph.cpp
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@ -3978,7 +3978,10 @@ EX bool fat_edges = false;
EX void gridline(const shiftmatrix& V1, const hyperpoint h1, const shiftmatrix& V2, const hyperpoint h2, color_t col, int prec) {
transmatrix U2 = unshift(V2, V1.shift);
ld d = hdist(V1.T*h1, U2*h2);
int c1 = safe_classify_ideals(h1);
int c2 = safe_classify_ideals(h2);
ld d = (c1 <= 0 || c2 <= 0) ? 99 : hdist(V1.T*h1, U2*h2);
#if MAXMDIM >= 4
if(WDIM == 3 && fat_edges) {
@ -3992,7 +3995,25 @@ EX void gridline(const shiftmatrix& V1, const hyperpoint h1, const shiftmatrix&
while(d > precise_width && d < 100 && grid_depth < 10) {
if(V1.shift != V2.shift || !eqmatrix(V1.T, V2.T, 1e-6)) { gridline(V1, h1, V1, inverse_shift(V1, V2) * h2, col, prec); return; }
hyperpoint h = midz(h1, h2);
hyperpoint h;
if(c1 <= 0 && c2 <= 0) {
h = closest_to_zero(h1, h2);
if(safe_classify_ideals(h) <= 0) return;
h = normalize(h);
}
else if(c2 <= 0) {
dynamicval<int> dw(grid_depth, 99);
for(ld a=0; a<ideal_limit; a+=precise_width)
gridline(V1, towards_inf(h1, h2, a), V1, towards_inf(h1, h2, a+precise_width), col, prec);
return;
}
else if(c1 <= 0) {
dynamicval<int> dw(grid_depth, 99);
for(ld a=0; a<ideal_limit; a+=precise_width)
gridline(V1, towards_inf(h2, h1, a), V1, towards_inf(h2, h1, a+precise_width), col, prec);
return;
}
else h = midz(h1, h2);
grid_depth++;
gridline(V1, h1, V1, h, col, prec);
gridline(V1, h, V1, h2, col, prec);