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Bridge Line Width + Improve bridge density (#11255)

Browse Source 
* Base

* Standarized

Co-Authored-By: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>

* Wiki

* Improved descriptions based in RF47 Tests

Co-Authored-By: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>

* Bridge Flow Wiki

* Removed CMATH

Co-Authored-By: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>

* Default to 100

* Revert "TESTING BRIDGE DENSITY"

This reverts commit 8634f802311cd3877b0dd5651029b30b2d4eab60.

Removed desc change

* Minor changes

Co-Authored-By: Noisyfox <timemanager.rick@gmail.com>

* Update LayerRegion.cpp

* Missing ;

Co-authored-by: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>

* Restrict bridge line width to nozzle diameter

* Clarification

* Increased both Bridge Densitys to 125

Co-Authored-By: Valerii Bokhan <80919135+valerii-bokhan@users.noreply.github.com>

* Valerii check

Co-Authored-By: Valerii Bokhan <80919135+valerii-bokhan@users.noreply.github.com>

* Fix error handling

* Clarify thick bridges documentation and tooltips

Updated the documentation and tooltips for 'thick_bridges' and 'thick_internal_bridges' to clarify that bridge extrusion uses a line height equal to the nozzle diameter, and to better explain the trade-offs between strength, reliability, and appearance.

* Partially restore bridge_flow description

* Suggestions

---------

Co-authored-by: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>
Co-authored-by: Noisyfox <timemanager.rick@gmail.com>
Co-authored-by: Valerii Bokhan <80919135+valerii-bokhan@users.noreply.github.com>
This commit is contained in:
Ian Bassi
2026-06-03 10:16:59 -03:00
committed by GitHub
parent 065540e48f
commit ae16c76dd2
8 changed files with 137 additions and 48 deletions
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18
src/libslic3r/LayerRegion.cpp
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@@ -34,16 +34,26 @@ Flow LayerRegion::bridging_flow(FlowRole role, bool thick_bridge) const
const PrintRegionConfig &region_config = region.config();
const PrintObject &print_object = *this->layer()->object();
Flow bridge_flow;
// Here this->extruder(role) - 1 may underflow to MAX_INT, but then the get_at() will fall back to zero'th element, so everything is all right.
auto nozzle_diameter = float(print_object.print()->config().nozzle_diameter.get_at(region.extruder(role) - 1));
const ConfigOptionFloatOrPercent& bridge_width_opt = region_config.bridge_line_width;
const double bridge_width = bridge_width_opt.get_abs_value(nozzle_diameter);
const bool has_bridge_width = bridge_width > 0.;
const double bridge_flow_ratio = region_config.bridge_flow;
if (thick_bridge) {
// The old Slic3r way (different from all other slicers): Use rounded extrusions.
// Get the configured nozzle_diameter for the extruder associated to the flow role requested.
// Here this->extruder(role) - 1 may underflow to MAX_INT, but then the get_at() will follback to zero'th element, so everything is all right.
// Applies default bridge spacing.
bridge_flow = Flow::bridging_flow(float(sqrt(region_config.bridge_flow)) * nozzle_diameter, nozzle_diameter);
float thread_diameter = has_bridge_width ? float(bridge_width) : nozzle_diameter;
if (bridge_flow_ratio > 0.)
thread_diameter *= float(sqrt(bridge_flow_ratio));
bridge_flow = Flow::bridging_flow(thread_diameter, nozzle_diameter);
} else {
// The same way as other slicers: Use normal extrusions. Apply bridge_flow while maintaining the original spacing.
bridge_flow = this->flow(role).with_flow_ratio(region_config.bridge_flow);
Flow base_flow = this->flow(role);
if (has_bridge_width)
base_flow = Flow(float(bridge_width), base_flow.height(), nozzle_diameter);
bridge_flow = base_flow.with_flow_ratio(bridge_flow_ratio);
}
return bridge_flow;