3DPrinting/PrusaSlicer-NonPlainar
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Ensure that no points are placed the implicit line from last to first vertex, as the input is a line and not a polygon.

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Thomas Rahm 2023-01-13 02:58:43 +01:00
parent 6db30602a0
commit 062a619381
1 changed files with 5 additions and 2 deletions
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7
src/libslic3r/TreeSupport.cpp
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@ -554,7 +554,8 @@ static std::optional<std::pair<Point, size_t>> polyline_sample_next_point_at_dis
double next_distance = current_distance;
// Get points so that at least min_points are added and they each are current_distance away from each other. If that is impossible, decrease current_distance a bit.
// The input are lines, that means that the line from the last to the first vertex does not have to exist, so exclude all points that are on this line!
while ((next_point = polyline_sample_next_point_at_distance(part.points, current_point, current_index, next_distance))) {
while ((next_point = polyline_sample_next_point_at_distance(part.points, current_point, current_index, next_distance)) &&
next_point->second < coord_t(part.size()) - 1) {
// Not every point that is distance away, is valid, as it may be much closer to another point. This is especially the case when the overhang is very thin.
// So this ensures that the points are actually a certain distance from each other.
// This assurance is only made on a per polygon basis, as different but close polygon may not be able to use support below the other polygon.
@ -3455,16 +3456,18 @@ static void draw_branches(
const double max_nudge_smoothing = 1. * scale;
static constexpr const size_t num_iter = 100; // 1000;
for (size_t iter = 0; iter < num_iter; ++ iter) {
for (size_t iter = 0; iter < num_iter; ++iter) {
prev = pts;
projections = pts;
distances.assign(pts.size(), std::numeric_limits<float>::max());
closest_surface_point->searchAndReplace(projections, distances);
size_t num_moved = 0;
for (size_t i = 0; i < projections.size(); ++ i) {
const SupportElement &element = *elements_with_link_down[i].first;
const int below = elements_with_link_down[i].second;
const bool locked = below == -1 && element.state.layer_idx > 0;
if (! locked && pts[i] != projections[i]) {
// Nudge the circle center away from the collision.
Vec3d v{ projections[i].x() - pts[i].x(), projections[i].y() - pts[i].y(), projections[i].z() - pts[i].z() };