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moved circumscribe and other functions from irregular.cpp to hyperpoint.cpp

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This commit is contained in:
Zeno Rogue 2021-07-08 20:53:07 +02:00
parent 2a7d932703
commit ccc82866a9
2 changed files with 62 additions and 60 deletions
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62
hyperpoint.cpp
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@ -1583,4 +1583,66 @@ EX hyperpoint linecross(hyperpoint a, hyperpoint b, hyperpoint c, hyperpoint d)
return normalize(res);
}
EX ld inner2(hyperpoint h1, hyperpoint h2) {
return
hyperbolic ? h1[LDIM] * h2[LDIM] - h1[0] * h2[0] - h1[1] * h2[1] :
sphere ? h1[LDIM] * h2[LDIM] + h1[0] * h2[0] + h1[1] * h2[1] :
h1[0] * h2[0] + h1[1] * h2[1];
}
EX hyperpoint circumscribe(hyperpoint a, hyperpoint b, hyperpoint c) {
hyperpoint h = C0;
b = b - a;
c = c - a;
if(euclid) {
ld b2 = inner2(b, b)/2;
ld c2 = inner2(c, c)/2;
ld det = c[1]*b[0] - b[1]*c[0];
h = a;
h[1] += (c2*b[0] - b2 * c[0]) / det;
h[0] += (c2*b[1] - b2 * c[1]) / -det;
return h;
}
if(inner2(b,b) < 0) {
b = b / sqrt(-inner2(b, b));
c = c + b * inner2(c, b);
h = h + b * inner2(h, b);
}
else {
b = b / sqrt(inner2(b, b));
c = c - b * inner2(c, b);
h = h - b * inner2(h, b);
}
if(inner2(c,c) < 0) {
c = c / sqrt(-inner2(c, c));
h = h + c * inner2(h, c);
}
else {
c = c / sqrt(inner2(c, c));
h = h - c * inner2(h, c);
}
if(h[LDIM] < 0) h[0] = -h[0], h[1] = -h[1], h[LDIM] = -h[LDIM];
ld i = inner2(h, h);
if(i > 0) h /= sqrt(i);
else h /= -sqrt(-i);
return h;
}
EX bool clockwise(hyperpoint h1, hyperpoint h2) {
return h1[0] * h2[1] > h1[1] * h2[0];
}
}

60
irregular.cpp
View File

@ -42,66 +42,6 @@ EX map<cell*, int> cellindex;
EX vector<cellinfo> cells;
ld inner(hyperpoint h1, hyperpoint h2) {
return
hyperbolic ? h1[LDIM] * h2[LDIM] - h1[0] * h2[0] - h1[1] * h2[1] :
sphere ? h1[LDIM] * h2[LDIM] + h1[0] * h2[0] + h1[1] * h2[1] :
h1[0] * h2[0] + h1[1] * h2[1];
}
hyperpoint circumscribe(hyperpoint a, hyperpoint b, hyperpoint c) {
hyperpoint h = C0;
b = b - a;
c = c - a;
if(euclid) {
ld b2 = inner(b, b)/2;
ld c2 = inner(c, c)/2;
ld det = c[1]*b[0] - b[1]*c[0];
h = a;
h[1] += (c2*b[0] - b2 * c[0]) / det;
h[0] += (c2*b[1] - b2 * c[1]) / -det;
return h;
}
if(inner(b,b) < 0) {
b = b / sqrt(-inner(b, b));
c = c + b * inner(c, b);
h = h + b * inner(h, b);
}
else {
b = b / sqrt(inner(b, b));
c = c - b * inner(c, b);
h = h - b * inner(h, b);
}
if(inner(c,c) < 0) {
c = c / sqrt(-inner(c, c));
h = h + c * inner(h, c);
}
else {
c = c / sqrt(inner(c, c));
h = h - c * inner(h, c);
}
if(h[LDIM] < 0) h[0] = -h[0], h[1] = -h[1], h[LDIM] = -h[LDIM];
ld i = inner(h, h);
if(i > 0) h /= sqrt(i);
else h /= -sqrt(-i);
return h;
}
bool clockwise(hyperpoint h1, hyperpoint h2) {
return h1[0] * h2[1] > h1[1] * h2[0];
}
EX map<heptagon*, vector<int> > cells_of_heptagon;
int runlevel;