3DPrinting/PrusaSlicer-NonPlainar
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Prevented gap fill and Arachne from creating tiny gaps in extrusions in specific cases.

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This commit is contained in:
Lukáš Hejl 2022-07-21 20:04:30 +02:00
parent 1150639306
commit 2a865919a0
1 changed files with 22 additions and 6 deletions
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28
src/libslic3r/PerimeterGenerator.cpp
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@ -24,7 +24,18 @@ ExtrusionPaths thick_polyline_to_extrusion_paths(const ThickPolyline &thick_poly
assert(line.a_width >= SCALED_EPSILON && line.b_width >= SCALED_EPSILON);
const coordf_t line_len = line.length();
if (line_len < SCALED_EPSILON) continue;
if (line_len < SCALED_EPSILON) {
// The line is so tiny that we don't care about its width when we connect it to another line.
if (!path.empty())
path.polyline.points.back() = line.b; // If the variable path is non-empty, connect this tiny line to it.
else if (i + 1 < (int)lines.size()) // If there is at least one following line, connect this tiny line to it.
lines[i + 1].a = line.a;
else if (!paths.empty())
paths.back().polyline.points.back() = line.b; // Connect this tiny line to the last finished path.
// If any of the above isn't satisfied, then remove this tiny line.
continue;
}
double thickness_delta = fabs(line.a_width - line.b_width);
if (thickness_delta > tolerance) {
@ -100,14 +111,19 @@ static void variable_width(const ThickPolylines& polylines, ExtrusionRole role,
// This value determines granularity of adaptive width, as G-code does not allow
// variable extrusion within a single move; this value shall only affect the amount
// of segments, and any pruning shall be performed before we apply this tolerance.
const float tolerance = float(scale_(0.05));
const auto tolerance = float(scale_(0.05));
for (const ThickPolyline &p : polylines) {
ExtrusionPaths paths = thick_polyline_to_extrusion_paths(p, role, flow, tolerance, tolerance);
// Append paths to collection.
if (! paths.empty()) {
if (paths.front().first_point() == paths.back().last_point())
out.emplace_back(new ExtrusionLoop(std::move(paths)));
else {
if (!paths.empty()) {
for (auto it = std::next(paths.begin()); it != paths.end(); ++it) {
assert(it->polyline.points.size() >= 2);
assert(std::prev(it)->polyline.last_point() == it->polyline.first_point());
}
if (paths.front().first_point() == paths.back().last_point()) {
out.emplace_back(new ExtrusionLoop(std::move(paths)));
} else {
for (ExtrusionPath &path : paths)
out.emplace_back(new ExtrusionPath(std::move(path)));
}