From ecbb621171af0f20751bbc590453d00a7bd38320 Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sun, 9 Feb 2025 15:18:35 +0000 Subject: Move lots of geoData helpers into lib --- game/geoData.cpp | 41 ----------------------------------------- 1 file changed, 41 deletions(-) (limited to 'game') 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 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; - constexpr auto pointLeftOfOrOnLine = pointLineOp; - - 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) { -- cgit v1.2.3