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Refactoring of EdgeGrid to accept an segment to segment visitor.

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WIP: PolygonTrimmer to trim skirt & brim with polygons stored in EdgeGrid.
This commit is contained in:
bubnikv 2019-08-21 14:52:22 +02:00
parent 668a8cd2ea
commit dc3a0a0ab3
6 changed files with 272 additions and 152 deletions
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23
src/libslic3r/Geometry.hpp
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@ -111,6 +111,29 @@ inline bool segment_segment_intersection(const Vec2d &p1, const Vec2d &v1, const
return true;
}
inline int segments_could_intersect(
const Slic3r::Point &ip1, const Slic3r::Point &ip2,
const Slic3r::Point &jp1, const Slic3r::Point &jp2)
{
Vec2i64 iv = (ip2 - ip1).cast<int64_t>();
Vec2i64 vij1 = (jp1 - ip1).cast<int64_t>();
Vec2i64 vij2 = (jp2 - ip1).cast<int64_t>();
int64_t tij1 = cross2(iv, vij1);
int64_t tij2 = cross2(iv, vij2);
int sij1 = (tij1 > 0) ? 1 : ((tij1 < 0) ? -1 : 0); // signum
int sij2 = (tij2 > 0) ? 1 : ((tij2 < 0) ? -1 : 0);
return sij1 * sij2;
}
inline bool segments_intersect(
const Slic3r::Point &ip1, const Slic3r::Point &ip2,
const Slic3r::Point &jp1, const Slic3r::Point &jp2)
{
return segments_could_intersect(ip1, ip2, jp1, jp2) <= 0 &&
segments_could_intersect(jp1, jp2, ip1, ip2) <= 0;
}
Pointf3s convex_hull(Pointf3s points);
Polygon convex_hull(Points points);
Polygon convex_hull(const Polygons &polygons);