diff options
| author | Dan Goodliffe <dan@randomdan.homeip.net> | 2025-02-09 15:18:35 +0000 |
|---|---|---|
| committer | Dan Goodliffe <dan@randomdan.homeip.net> | 2025-02-09 15:18:35 +0000 |
| commit | ecbb621171af0f20751bbc590453d00a7bd38320 (patch) | |
| tree | 69717a9eb7fc452d2d95b977d6ff413258e7dcb4 /game/geoData.cpp | |
| parent | Initial commit setting terrain during network construction (diff) | |
| download | ilt-ecbb621171af0f20751bbc590453d00a7bd38320.tar.bz2 ilt-ecbb621171af0f20751bbc590453d00a7bd38320.tar.xz ilt-ecbb621171af0f20751bbc590453d00a7bd38320.zip | |
Move lots of geoData helpers into lib
Diffstat (limited to 'game/geoData.cpp')
| -rw-r--r-- | game/geoData.cpp | 41 |
1 files changed, 0 insertions, 41 deletions
diff --git a/game/geoData.cpp b/game/geoData.cpp index 816ce03..3b94564 100644 --- a/game/geoData.cpp +++ b/game/geoData.cpp @@ -142,47 +142,6 @@ GeoData::PointFace::face(const GeoData * mesh) const } namespace { - template<template<typename> typename Op> - [[nodiscard]] constexpr inline auto - pointLineOp(const GlobalPosition2D p, const GlobalPosition2D e1, const GlobalPosition2D e2) - { - return Op {}(CalcDistance(e2.x - e1.x) * CalcDistance(p.y - e1.y), - CalcDistance(e2.y - e1.y) * CalcDistance(p.x - e1.x)); - } - - constexpr auto pointLeftOfLine = pointLineOp<std::greater>; - constexpr auto pointLeftOfOrOnLine = pointLineOp<std::greater_equal>; - - static_assert(pointLeftOfLine({1, 2}, {1, 1}, {2, 2})); - static_assert(pointLeftOfLine({2, 1}, {2, 2}, {1, 1})); - static_assert(pointLeftOfLine({2, 2}, {1, 2}, {2, 1})); - static_assert(pointLeftOfLine({1, 1}, {2, 1}, {1, 2})); - static_assert(pointLeftOfOrOnLine({310000000, 490000000}, {310000000, 490000000}, {310050000, 490050000})); - static_assert(pointLeftOfOrOnLine({310000000, 490000000}, {310050000, 490050000}, {310000000, 490050000})); - static_assert(pointLeftOfOrOnLine({310000000, 490000000}, {310000000, 490050000}, {310000000, 490000000})); - - [[nodiscard]] constexpr inline bool - linesCross( - const GlobalPosition2D a1, const GlobalPosition2D a2, const GlobalPosition2D b1, const GlobalPosition2D b2) - { - return (pointLeftOfLine(a2, b1, b2) == pointLeftOfLine(a1, b2, b1)) - && (pointLeftOfLine(b1, a1, a2) == pointLeftOfLine(b2, a2, a1)); - } - - static_assert(linesCross({1, 1}, {2, 2}, {1, 2}, {2, 1})); - static_assert(linesCross({2, 2}, {1, 1}, {1, 2}, {2, 1})); - - [[nodiscard]] constexpr inline bool - linesCrossLtR( - const GlobalPosition2D a1, const GlobalPosition2D a2, const GlobalPosition2D b1, const GlobalPosition2D b2) - { - return pointLeftOfLine(a2, b1, b2) && pointLeftOfLine(a1, b2, b1) && pointLeftOfLine(b1, a1, a2) - && pointLeftOfLine(b2, a2, a1); - } - - static_assert(linesCrossLtR({1, 1}, {2, 2}, {1, 2}, {2, 1})); - static_assert(!linesCrossLtR({2, 2}, {1, 1}, {1, 2}, {2, 1})); - constexpr GlobalPosition3D positionOnTriangle(const GlobalPosition2D point, const GeoData::Triangle<3> & t) { |