solid infill overlap test

supermerill/SuperSlicer#2028

4 files changed, 19 insertions, 1 deletions

diff --git a/src/libslic3r/Fill/Fill.cpp b/src/libslic3r/Fill/Fill.cpp
index 0639f95ab..bbcc9d9bc 100644
--- a/src/libslic3r/Fill/Fill.cpp
+++ b/src/libslic3r/Fill/Fill.cpp
@@ -565,6 +565,10 @@ void Layer::make_fills(FillAdaptive::Octree* adaptive_fill_octree, FillAdaptive:
                     }
                 }
 
+                if (!surface_fill.params.flow.bridge && surface_fill.params.full_infill()) {
+                    surface_fill.params.flow.spacing_ratio = surface_fill.params.config->solid_infill_overlap.get_abs_value(1.);
+                }
+
                 //make fill
                 while ((size_t)surface_fill.params.priority >= fills_by_priority.size())
                     fills_by_priority.push_back(new ExtrusionEntityCollection());
diff --git a/src/libslic3r/Preset.cpp b/src/libslic3r/Preset.cpp
index ed3a999b9..30ce2a8c0 100644
--- a/src/libslic3r/Preset.cpp
+++ b/src/libslic3r/Preset.cpp
@@ -598,6 +598,7 @@ const std::vector<std::string>& Preset::print_options()
         "support_material_extrusion_width",
         // overlap, ratios
         "infill_overlap", "bridge_flow_ratio",
+        "solid_infill_overlap",
         "infill_anchor",
         "infill_anchor_max",
         "clip_multipart_objects",
diff --git a/src/libslic3r/PrintConfig.cpp b/src/libslic3r/PrintConfig.cpp
index 854be0d4f..d50cbecf8 100644
--- a/src/libslic3r/PrintConfig.cpp
+++ b/src/libslic3r/PrintConfig.cpp
@@ -398,7 +398,8 @@ void PrintConfigDef::init_fff_params()
     def->tooltip = L("This factor affects the amount of plastic for bridging. "
                    "You can decrease it slightly to pull the extrudates and prevent sagging, "
                    "although default settings are usually good and you should experiment "
-                   "with cooling (use a fan) before tweaking this.");
+                   "with cooling (use a fan) before tweaking this."
+                   "\nFor reference, the default bridge flow is (in mm3/mm): (nozzle diameter) * (nozzle diameter) * PI/4");
     def->min = 1;
     def->max = 200;
     def->mode = comAdvanced;
@@ -3893,6 +3894,16 @@ void PrintConfigDef::init_fff_params()
     def->mode = comExpert;
     def->set_default_value(new ConfigOptionFloat(70));
 
+    def = this->add("solid_infill_overlap", coPercent);
+    def->label = L("Solid fill overlap");
+    def->category = OptionCategory::infill;
+    def->tooltip = L("Overlap.");
+    def->sidetext = L("%");
+    def->min = 0;
+    def->max = 100;
+    def->mode = comExpert;
+    def->set_default_value(new ConfigOptionPercent(100));
+
     def = this->add("solid_infill_extruder", coInt);
     def->label = L("Solid infill extruder");
     def->category = OptionCategory::extruders;
diff --git a/src/libslic3r/PrintConfig.hpp b/src/libslic3r/PrintConfig.hpp
index 49767cabc..ce949a135 100644
--- a/src/libslic3r/PrintConfig.hpp
+++ b/src/libslic3r/PrintConfig.hpp
@@ -886,6 +886,7 @@ public:
     ConfigOptionFloatOrPercent      solid_infill_extrusion_width;
     ConfigOptionInt                 solid_infill_every_layers;
     ConfigOptionFloatOrPercent      solid_infill_speed;
+    ConfigOptionPercent             solid_infill_overlap;
     ConfigOptionInt                 solid_over_perimeters;
     ConfigOptionInt                 print_temperature;
     ConfigOptionBool                thin_perimeters;
@@ -1002,6 +1003,7 @@ protected:
         OPT_PTR(solid_infill_extrusion_width);
         OPT_PTR(solid_infill_every_layers);
         OPT_PTR(solid_infill_speed);
+        OPT_PTR(solid_infill_overlap);
         OPT_PTR(solid_over_perimeters);
         OPT_PTR(print_temperature);
         OPT_PTR(thin_perimeters);