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Fix of a typo in KDTreeIndirect.

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Improvement of the infill path planning.
Regression fix of Gyroid infill crashes.
Some unit tests for elephant foot and path planning.
This commit is contained in:
bubnikv 2019-11-14 17:02:32 +01:00
parent ae887d5833
commit dd59945098
9 changed files with 443 additions and 145 deletions
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87
src/libslic3r/ElephantFootCompensation.cpp
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@ -60,9 +60,9 @@ std::vector<float> contour_distance(const EdgeGrid::Grid &grid, const size_t idx
for (size_t axis = 0; axis < 2; ++ axis) {
double dx = std::abs(dir(axis));
if (dx >= EPSILON) {
double tedge = (dir(axis) > 0) ? (double(bbox.max(axis)) - EPSILON - this->pt(axis)) : (this->pt(axis) - double(bbox.min(axis)) - EPSILON);
double tedge = (dir(axis) > 0) ? (double(bbox.max(axis)) - SCALED_EPSILON - this->pt(axis)) : (this->pt(axis) - double(bbox.min(axis)) - SCALED_EPSILON);
if (tedge < dx)
t = tedge / dx;
t = std::min(t, tedge / dx);
}
}
this->dir = dir;
@ -70,6 +70,7 @@ std::vector<float> contour_distance(const EdgeGrid::Grid &grid, const size_t idx
dir *= t;
this->pt_end = (this->pt + dir).cast<coord_t>();
this->t_min = 1.;
assert(this->grid.bbox().contains(this->pt_start) && this->grid.bbox().contains(this->pt_end));
}
bool operator()(coord_t iy, coord_t ix) {
@ -361,7 +362,7 @@ static inline void smooth_compensation_banded(const Points &contour, float band,
}
ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, const Flow &external_perimeter_flow, const double compensation)
{
{
// The contour shall be wide enough to apply the external perimeter plus compensation on both sides.
double min_contour_width = double(external_perimeter_flow.scaled_width() + external_perimeter_flow.scaled_spacing());
double scaled_compensation = scale_(compensation);
@ -369,39 +370,59 @@ ExPolygon elephant_foot_compensation(const ExPolygon &input_expoly, const Flow &
// Make the search radius a bit larger for the averaging in contour_distance over a fan of rays to work.
double search_radius = min_contour_width_compensated + min_contour_width * 0.5;
EdgeGrid::Grid grid;
ExPolygon simplified = input_expoly.simplify(SCALED_EPSILON).front();
BoundingBox bbox = get_extents(simplified.contour);
bbox.offset(SCALED_EPSILON);
grid.set_bbox(bbox);
grid.create(simplified, coord_t(0.7 * search_radius));
std::vector<std::vector<float>> deltas;
deltas.reserve(simplified.holes.size() + 1);
ExPolygon resampled(simplified);
double resample_interval = scale_(0.5);
for (size_t idx_contour = 0; idx_contour <= simplified.holes.size(); ++ idx_contour) {
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);
std::vector<float> dists = contour_distance(grid, idx_contour, poly.points, resampled_point_parameters, search_radius);
for (float &d : dists) {
// printf("Point %d, Distance: %lf\n", int(&d - dists.data()), unscale<double>(d));
// Convert contour width to available compensation distance.
if (d < min_contour_width)
d = 0.f;
else if (d > min_contour_width_compensated)
d = - float(scaled_compensation);
else
d = - (d - float(min_contour_width)) / 2.f;
assert(d >= - float(scaled_compensation) && d <= 0.f);
BoundingBox bbox = get_extents(input_expoly.contour);
Point bbox_size = bbox.size();
ExPolygon out;
if (bbox_size.x() < min_contour_width_compensated + SCALED_EPSILON ||
bbox_size.y() < min_contour_width_compensated + SCALED_EPSILON ||
input_expoly.area() < min_contour_width_compensated * min_contour_width_compensated * 5.)
{
// The contour is tiny. Don't correct it.
out = input_expoly;
}
else
{
EdgeGrid::Grid grid;
ExPolygon simplified = input_expoly.simplify(SCALED_EPSILON).front();
BoundingBox bbox = get_extents(simplified.contour);
bbox.offset(SCALED_EPSILON);
grid.set_bbox(bbox);
grid.create(simplified, coord_t(0.7 * search_radius));
std::vector<std::vector<float>> deltas;
deltas.reserve(simplified.holes.size() + 1);
ExPolygon resampled(simplified);
double resample_interval = scale_(0.5);
for (size_t idx_contour = 0; idx_contour <= simplified.holes.size(); ++ idx_contour) {
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);
std::vector<float> dists = contour_distance(grid, idx_contour, poly.points, resampled_point_parameters, search_radius);
for (float &d : dists) {
// printf("Point %d, Distance: %lf\n", int(&d - dists.data()), unscale<double>(d));
// Convert contour width to available compensation distance.
if (d < min_contour_width)
d = 0.f;
else if (d > min_contour_width_compensated)
d = - float(scaled_compensation);
else
d = - (d - float(min_contour_width)) / 2.f;
assert(d >= - float(scaled_compensation) && d <= 0.f);
}
// smooth_compensation(dists, 0.4f, 10);
smooth_compensation_banded(poly.points, float(0.8 * resample_interval), dists, 0.3f, 3);
deltas.emplace_back(dists);
}
// smooth_compensation(dists, 0.4f, 10);
smooth_compensation_banded(poly.points, float(0.8 * resample_interval), dists, 0.3f, 3);
deltas.emplace_back(dists);
ExPolygons out_vec = variable_offset_inner_ex(resampled, deltas, 2.);
assert(out_vec.size() == 1);
if (out_vec.size() == 1)
out = std::move(out_vec.front());
else
// Something went wrong, don't compensate.
out = input_expoly;
}
ExPolygons out = variable_offset_inner_ex(resampled, deltas, 2.);
return out.front();
return out;
}
ExPolygons elephant_foot_compensation(const ExPolygons &input, const Flow &external_perimeter_flow, const double compensation)