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gp:: looks better on spheres

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Zeno Rogue 2018-05-01 19:32:55 +02:00
parent 1e433694a6
commit bf0ce8d2f0
1 changed files with 10 additions and 1 deletions
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11
goldberg.cpp
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@ -389,6 +389,14 @@ namespace gp {
hpxyz(1, -2, 0),
hpxyz(0, 0, 0) // center, not a corner
};
hyperpoint cornmul(const transmatrix& corners, const hyperpoint& c) {
if(sphere) {
ld cmin = c[0] * c[1] * c[2] * (6 - S7);
return corners * hpxyz(c[0] + cmin, c[1] + cmin, c[2] + cmin);
}
else return corners * c;
}
hyperpoint atz(const transmatrix& T, const transmatrix& corners, loc at, int cornerid = 6, ld cf = 3) {
int sp = 0;
@ -402,7 +410,7 @@ namespace gp {
}
if(sp>3) sp -= 6;
return normalize(spin(2*M_PI*sp/S7) * T * corner);
return normalize(spin(2*M_PI*sp/S7) * cornmul(T, corner));
}
transmatrix Tf[8][32][32][6];
@ -459,6 +467,7 @@ namespace gp {
area = ((2*x+y) * (2*x+y) + y*y*3) / 4;
next = hpxyz(x+y/2., -y * sqrt(3) / 2, 0);
scale = 1 / hypot2(next);
if(sphere) scale *= .7;
crossf *= scale;
hepvdist *= scale;
rhexf *= scale;