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rendering torus in spherical native geometry now creates the actual torus

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Zeno Rogue 2018-05-28 19:10:57 +02:00
parent 38411a9a8b
commit b8dbaadff6
1 changed files with 11 additions and 1 deletions
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12
rug.cpp
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@ -409,6 +409,9 @@ void buildTorusRug() {
ld factor = sqrt(ld(solution.second.d2()) / solution.first.d2());
ld xfactor = sqrt(1/ (1+factor*factor));;
ld yfactor = xfactor * factor;
Xprintf("factor = %lf\n", factor);
if(factor <= 2.05) factor = 2.2;
factor -= 1;
@ -439,7 +442,14 @@ void buildTorusRug() {
// r->flat = {alpha, beta, 0};
double sc = (factor+1)/4;
r->flat = r->h = hpxyz((factor+cos(alpha)) * cos(beta) * sc, (factor+cos(alpha)) * sin(beta) * sc, -sin(alpha) * sc);
if(gwhere == gSphere) {
ld ax = alpha + 1.124651, bx = beta + 1.214893;
ld x = xfactor * sin(ax), y = xfactor * cos(ax), z = yfactor * sin(bx), t = yfactor * cos(bx);
ld d = acos(t) / sqrt(x*x+y*y+z*z);
r->flat = r->h = hpxyz(x * d, y * d, z * d);
}
else
r->flat = r->h = hpxyz((factor+cos(alpha)) * cos(beta) * sc, (factor+cos(alpha)) * sin(beta) * sc, -sin(alpha) * sc);
r->valid = true;
static const int X = 100003; // a prime