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ENH: use different margin for top/bottom and bottom bridge

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Too large margin for bridge will cause overflow for
shell model. But too small margin for top/bottom will
cause infill area discontinuous.

Using different margin for top/bottom and bridge to
make a balance.

Signed-off-by: salt.wei <salt.wei@bambulab.com>
Change-Id: I9ba8388b85b978ae39caf2df04f96c704b5d2e05
This commit is contained in:
salt.wei 2022-10-11 22:12:58 +08:00 • committed by Lane.Wei
parent 17076cc1bd
commit 54377760b9
2 changed files with 5 additions and 8 deletions
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5
src/libslic3r/LayerRegion.cpp
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@ -118,7 +118,8 @@ void LayerRegion::process_external_surfaces(const Layer *lower_layer, const Poly
const bool has_infill = this->region().config().sparse_infill_density.value > 0.;
//BBS
auto nozzle_diameter = this->region().nozzle_dmr_avg(this->layer()->object()->print()->config());
const float margin = std::min(float(scale_(EXTERNAL_INFILL_MARGIN)), float(scale_(nozzle_diameter * EXTERNAL_INFILL_MARGIN / 0.4)));
const float margin = float(scale_(EXTERNAL_INFILL_MARGIN));
const float bridge_margin = std::min(float(scale_(BRIDGE_INFILL_MARGIN)), float(scale_(nozzle_diameter * BRIDGE_INFILL_MARGIN / 0.4)));
// BBS
const PrintObjectConfig& object_config = this->layer()->object()->config();
@ -224,7 +225,7 @@ void LayerRegion::process_external_surfaces(const Layer *lower_layer, const Poly
break;
}
// Grown by 3mm.
Polygons polys = offset(bridges[i].expolygon, margin, EXTERNAL_SURFACES_OFFSET_PARAMETERS);
Polygons polys = offset(bridges[i].expolygon, bridge_margin, EXTERNAL_SURFACES_OFFSET_PARAMETERS);
if (idx_island == -1) {
BOOST_LOG_TRIVIAL(trace) << "Bridge did not fall into the source region!";
} else {