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Follow up on 6deb6a776d:

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Fixed orientation of contours after Elephant Foot Compensation.
This commit is contained in:
bubnikv
2020-02-19 12:57:54 +01:00
parent ae197ddd94
commit dfbae648bf
2 changed files with 63 additions and 10 deletions
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19
src/libslic3r/ElephantFootCompensation.cpp
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@@ -524,8 +524,20 @@ static inline void smooth_compensation_banded(const Points &contour, float band,
}
}
#ifndef NDEBUG
static bool validate_expoly_orientation(const ExPolygon &expoly)
{
bool valid = expoly.contour.is_counter_clockwise();
for (auto &h : expoly.holes)
valid &= h.is_clockwise();
return valid;
}
#endif /* NDEBUG */
ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, double min_contour_width, const double compensation)
{
assert(validate_expoly_orientation(input_expoly));
double scaled_compensation = scale_(compensation);
min_contour_width = scale_(min_contour_width);
double min_contour_width_compensated = min_contour_width + 2. * scaled_compensation;
@@ -546,6 +558,7 @@ ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, double min_c
{
EdgeGrid::Grid grid;
ExPolygon simplified = input_expoly.simplify(SCALED_EPSILON).front();
assert(validate_expoly_orientation(simplified));
BoundingBox bbox = get_extents(simplified.contour);
bbox.offset(SCALED_EPSILON);
grid.set_bbox(bbox);
@@ -558,6 +571,7 @@ ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, double min_c
Polygon &poly = (idx_contour == 0) ? resampled.contour : resampled.holes[idx_contour - 1];
std::vector<ResampledPoint> resampled_point_parameters;
poly.points = resample_polygon(poly.points, resample_interval, resampled_point_parameters);
assert(poly.is_counter_clockwise() == (idx_contour == 0));
std::vector<float> dists = contour_distance2(grid, idx_contour, poly.points, resampled_point_parameters, scaled_compensation, search_radius);
for (float &d : dists) {
// printf("Point %d, Distance: %lf\n", int(&d - dists.data()), unscale<double>(d));
@@ -593,10 +607,7 @@ ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, double min_c
}
}
// FIXME: orientations are messed up (Tamas)
out.contour.make_counter_clockwise();
for (auto &h : out.holes) h.make_clockwise();
assert(validate_expoly_orientation(out));
return out;
}