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allow higher dimensions in mirror solver

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allem
2020-01-08 23:43:40 -05:00
parent fb33a78718
commit eec9c0b0d8
3 changed files with 43 additions and 16 deletions
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39
vis/include/mirror.hpp
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@@ -20,28 +20,49 @@ float dot(int n, const glm::vec4 &a, const glm::vec4 &b) {
return sum;
}
float dot(int n, const std::vector<float> &a, const std::vector<float> &b) {
float sum = 0;
for (int i = 0; i < n; ++i) {
sum += a[i] * b[i];
}
return sum;
}
std::vector<glm::vec4> mirror(const tc::Group &group) {
std::vector<glm::vec4> mirrors;
std::vector<std::vector<float>> mirrors;
for (int p = 0; p < group.ngens; ++p) {
glm::vec4 vp{};
std::vector<float> vp;
for (int m = 0; m < p; ++m) {
glm::vec4 vq = mirrors[m];
vp[m] = (cos(M_PI / group.get(p, m)) - dot(m, vp, vq)) / vq[m];
auto &vq = mirrors[m];
vp.push_back((cos(M_PI / group.get(p, m)) - dot(m, vp, vq)) / vq[m]);
}
vp[p] = std::sqrt(1 - glm::dot(vp, vp));
vp.push_back(std::sqrt(1 - dot(p, vp, vp)));
for (const auto &v : mirrors) {
if (glm::dot(vp, v) > 0) {
vp *= -1;
if (dot(p, vp, vp) > 0) {
for (auto &e : vp) {
e *= -1;
}
break;
}
}
mirrors.push_back(round(vp, 15));
mirrors.push_back(vp);
}
return mirrors;
std::vector<glm::vec4> res;
for (const auto &vec : mirrors) {
glm::vec4 rvec{};
// ortho proj
for (int i = 0; i < std::min(vec.size(), 4LU); ++i) {
rvec[i] = vec[i];
}
res.push_back(rvec);
}
return res;
}
glm::vec4 project(const glm::vec4 &vec, const glm::vec4 &target) {