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author | Dan Goodliffe <dan@randomdan.homeip.net> | 2024-01-07 13:04:31 +0000 |
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committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2024-01-07 13:04:31 +0000 |
commit | 6a1df3dfbae98a05e74c646cc216fbc19ffdb6d6 (patch) | |
tree | 46c42bcbef1f12c4f46d53b4e0c4736bea506b51 /lib/ray.cpp | |
parent | Unified crossProduct (diff) | |
download | ilt-6a1df3dfbae98a05e74c646cc216fbc19ffdb6d6.tar.bz2 ilt-6a1df3dfbae98a05e74c646cc216fbc19ffdb6d6.tar.xz ilt-6a1df3dfbae98a05e74c646cc216fbc19ffdb6d6.zip |
Template Ray on position type
Diffstat (limited to 'lib/ray.cpp')
-rw-r--r-- | lib/ray.cpp | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/lib/ray.cpp b/lib/ray.cpp deleted file mode 100644 index 254ad14..0000000 --- a/lib/ray.cpp +++ /dev/null @@ -1,36 +0,0 @@ -#include "ray.h" -#include "maths.h" -#include <algorithm> - -Ray -Ray::fromPoints(Position3D start, Position3D p) -{ - return {start, glm::normalize(p - start)}; -} - -float -Ray::distanceToLine(const Position3D & p1, const Position3D & e1) const -{ - // https://en.wikipedia.org/wiki/Skew_lines - const auto diff = p1 - e1; - const auto d1 = glm::normalize(diff); - const auto &p2 = start, &d2 = direction; - const auto n = crossProduct(d1, d2); - const auto n2 = crossProduct(d2, n); - const auto c1 = p1 + (glm::dot((p2 - p1), n2) / glm::dot(d1, n2)) * d1; - const auto difflength = glm::length(diff); - if (glm::length(c1 - p1) > difflength || glm::length(c1 - e1) > difflength) { - return std::numeric_limits<float>::infinity(); - } - return glm::abs(glm::dot(n, p1 - p2)); -} - -bool -Ray::passesCloseToEdges(const std::span<const Position3D> positions, float distance) const -{ - return std::adjacent_find(positions.begin(), positions.end(), - [this, distance](const Position3D & a, const Position3D & b) { - return distanceToLine(a, b) <= distance; - }) - != positions.end(); -} |