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extra_perimeters : seems unsused, now used to add more perimeters on overhangs if needed.

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TODO: change the tooltip & description
This commit is contained in:
supermerill 2018-07-06 16:52:46 +02:00
parent 0f41fb46ba
commit 586b38f0b2
1 changed files with 32 additions and 3 deletions
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29
xs/src/libslic3r/PerimeterGenerator.cpp
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@ -68,6 +68,29 @@ void PerimeterGenerator::process()
ThickPolylines thin_walls; ThickPolylines thin_walls;
// we loop one time more than needed in order to find gaps after the last perimeter was applied // we loop one time more than needed in order to find gaps after the last perimeter was applied
for (int i = 0;; ++ i) { // outer loop is 0 for (int i = 0;; ++ i) { // outer loop is 0
// We can add more perimeters if there are uncovered overhangs
// improvement for future: find a way to add perimeters only where it's needed.
// It's hard to do, so here is a simple version.
bool may_add_more_perimeters = false;
if (this->config->extra_perimeters && i > loop_number && !last.empty()
&& this->lower_slices != NULL && !this->lower_slices->expolygons.empty()){
//split the polygons with bottom/notbottom
ExPolygons support(this->lower_slices->expolygons);
ExPolygons unsupported = diff_ex(last, support, true);
if (!unsupported.empty()) {
//only consider overhangs and let bridges alone
// it's more reliable than the BridgeDetector
ExPolygonCollection coll_last(support);
ExPolygon hull;
hull.contour = coll_last.convex_hull();
unsupported = diff_ex(unsupported, ExPolygons() = { hull });
if (!unsupported.empty()) {
//add fake perimeters here
may_add_more_perimeters = true;
}
}
}
// Calculate next onion shell of perimeters. // Calculate next onion shell of perimeters.
ExPolygons offsets; ExPolygons offsets;
if (i == 0) { if (i == 0) {
@ -138,9 +161,15 @@ void PerimeterGenerator::process()
last.clear(); last.clear();
break; break;
} else if (i > loop_number) { } else if (i > loop_number) {
if (may_add_more_perimeters) {
loop_number++;
contours.emplace_back();
holes.emplace_back();
} else {
// If i > loop_number, we were looking just for gaps. // If i > loop_number, we were looking just for gaps.
break; break;
} }
}
for (const ExPolygon &expolygon : offsets) { for (const ExPolygon &expolygon : offsets) {
contours[i].emplace_back(PerimeterGeneratorLoop(expolygon.contour, i, true)); contours[i].emplace_back(PerimeterGeneratorLoop(expolygon.contour, i, true));
if (! expolygon.holes.empty()) { if (! expolygon.holes.empty()) {