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3d:: more precise findbaseAround in binary3

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? 2019-02-28 15:06:14 +01:00 committed by Zeno Rogue
parent 81dd0c71da
commit 7d46acb1b8
2 changed files with 24 additions and 0 deletions
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11
binary-tiling.cpp
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@ -264,6 +264,17 @@ namespace binary {
return hr::parabolic13(y * co, z * co);
}
hyperpoint deparabolic3(hyperpoint h) {
using namespace hyperpoint_vec;
h /= (1 + h[3]);
hyperpoint one = point3(1,0,0);
h -= one;
h /= sqhypot_d(3, h);
h[0] += .5;
ld co = vid.binary_width / log(2) / 8;
return point3(log(2) + log(-h[0]), h[1] / co, h[2] / co);
}
void draw() {
dq::visited.clear();
dq::enqueue(viewctr.at, cview());

13
shmup.cpp
View File

@ -1036,6 +1036,19 @@ typedef multimap<cell*, monster*>::iterator mit;
vector<monster*> active, nonvirtual, additional;
cell *findbaseAround(hyperpoint p, cell *around) {
#if MAXMDIM == 4 && CAP_BT
// this needs a more precise algorithm because the cells have curved faces
if(DIM == 3 && binarytiling) {
hyperpoint h = binary::deparabolic3(inverse(ggmatrix(around)) * p);
if(h[0] < -log(2)/2) return around->cmove((h[1] > 0 ? 1 : 0) + (h[2] > 0 ? 2 : 0));
if(h[1] < -1) return around->cmove(4);
if(h[1] > +1) return around->cmove(5);
if(h[2] < -1) return around->cmove(6);
if(h[2] > +1) return around->cmove(7);
if(h[0] > +log(2)/2) return around->cmove(8);
return around;
}
#endif
cell *best = around;
double d0 = intval(p, ggmatrix(around) * C0);
for(int i=0; i<around->type; i++) {