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Reworked the bridge detector to allow searching a single bridging

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direction over multiple regions. This allows a single bridge to be
drawn over holes, which are too close to each other to allow
for separate bridges.
Fixes Bridging-Angle not optimal
https://github.com/prusa3d/Slic3r/issues/12

Re-allowed adaptive infill line width for solid infills. The adaptive
infill line width works in some circumstances, see Issue #15,
but the original implementation often changed the line width too
aggressively. The current implementation limits the line width change
to 20%.
Fixes Gaps between infill and perimeter leads to errors in laydown on following layer
https://github.com/prusa3d/Slic3r/issues/15
This commit is contained in:
bubnikv 2016-11-08 09:59:25 +01:00
parent 5a81731577
commit 22ca927f12
7 changed files with 433 additions and 443 deletions
Download patch file Download diff file Expand all files Collapse all files

75
xs/src/libslic3r/Fill/Fill.cpp
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@ -13,6 +13,17 @@
namespace Slic3r {
struct SurfaceGroupAttrib
{
SurfaceGroupAttrib() : is_solid(false), fw(0.f), pattern(-1) {}
bool operator==(const SurfaceGroupAttrib &other) const
{ return is_solid == other.is_solid && fw == other.fw && pattern == other.pattern; }
bool is_solid;
float fw;
// pattern is of type InfillPattern, -1 for an unset pattern.
int pattern;
};
// Generate infills for Slic3r::Layer::Region.
// The Slic3r::Layer::Region at this point of time may contain
// surfaces of various types (internal/bridge/top/bottom/solid).
@ -34,11 +45,11 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
// in case of bridge surfaces, the ones with defined angle will be attached to the ones
// without any angle (shouldn't this logic be moved to process_external_surfaces()?)
{
SurfacesPtr surfaces_with_bridge_angle;
surfaces_with_bridge_angle.reserve(layerm.fill_surfaces.surfaces.size());
Polygons polygons_bridged;
polygons_bridged.reserve(layerm.fill_surfaces.surfaces.size());
for (Surfaces::iterator it = layerm.fill_surfaces.surfaces.begin(); it != layerm.fill_surfaces.surfaces.end(); ++ it)
if (it->bridge_angle >= 0)
surfaces_with_bridge_angle.push_back(&(*it));
polygons_append(polygons_bridged, *it);
// group surfaces by distinct properties (equal surface_type, thickness, thickness_layers, bridge_angle)
// group is of type Slic3r::SurfaceCollection
@ -50,33 +61,29 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
{
// cache flow widths and patterns used for all solid groups
// (we'll use them for comparing compatible groups)
std::vector<char> is_solid(groups.size(), false);
std::vector<float> fw(groups.size(), 0.f);
std::vector<int> pattern(groups.size(), -1);
std::vector<SurfaceGroupAttrib> group_attrib(groups.size());
for (size_t i = 0; i < groups.size(); ++ i) {
// we can only merge solid non-bridge surfaces, so discard
// non-solid surfaces
const Surface &surface = *groups[i].front();
if (surface.is_solid() && (!surface.is_bridge() || layerm.layer()->id() == 0)) {
is_solid[i] = true;
fw[i] = (surface.surface_type == stTop) ? top_solid_infill_flow.width : solid_infill_flow.width;
pattern[i] = surface.is_external() ? layerm.region()->config.external_fill_pattern.value : ipRectilinear;
group_attrib[i].is_solid = true;
group_attrib[i].fw = (surface.surface_type == stTop) ? top_solid_infill_flow.width : solid_infill_flow.width;
group_attrib[i].pattern = surface.is_external() ? layerm.region()->config.external_fill_pattern.value : ipRectilinear;
}
}
// loop through solid groups
// Loop through solid groups, find compatible groups and append them to this one.
for (size_t i = 0; i < groups.size(); ++ i) {
if (is_solid[i]) {
// find compatible groups and append them to this one
for (size_t j = i + 1; j < groups.size(); ++ j) {
if (is_solid[j] && fw[i] == fw[j] && pattern[i] == pattern[j]) {
// groups are compatible, merge them
groups[i].insert(groups[i].end(), groups[j].begin(), groups[j].end());
groups.erase(groups.begin() + j);
is_solid.erase(is_solid.begin() + j);
fw.erase(fw.begin() + j);
pattern.erase(pattern.begin() + j);
}
}
if (! group_attrib[i].is_solid)
continue;
for (size_t j = i + 1; j < groups.size();) {
if (group_attrib[i] == group_attrib[j]) {
// groups are compatible, merge them
groups[i].insert(groups[i].end(), groups[j].begin(), groups[j].end());
groups.erase(groups.begin() + j);
group_attrib.erase(group_attrib.begin() + j);
} else
++ j;
}
}
}
@ -91,13 +98,12 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
// Make a union of polygons defining the infiill regions of a group, use a safety offset.
Polygons union_p = union_(to_polygons(*it_group), true);
// Subtract surfaces having a defined bridge_angle from any other, use a safety offset.
if (! surfaces_with_bridge_angle.empty() && it_group->front()->bridge_angle < 0)
union_p = diff(union_p, to_polygons(surfaces_with_bridge_angle), true);
if (! polygons_bridged.empty() && ! is_bridge)
union_p = diff(union_p, polygons_bridged, true);
// subtract any other surface already processed
//FIXME Vojtech: Because the bridge surfaces came first, they are subtracted twice!
ExPolygons union_expolys = diff_ex(union_p, to_polygons(surfaces), true);
for (ExPolygons::const_iterator it_expoly = union_expolys.begin(); it_expoly != union_expolys.end(); ++ it_expoly)
surfaces.push_back(Surface(*it_group->front(), *it_expoly));
// Using group.front() as a template.
surfaces_append(surfaces, diff_ex(union_p, to_polygons(surfaces), true), *group.front());
}
}
}
@ -154,7 +160,7 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
bool is_bridge = layerm.layer()->id() > 0 && surface.is_bridge();
if (surface.is_solid()) {
density = 100;
density = 100.;
fill_pattern = (surface.is_external() && ! is_bridge) ?
layerm.region()->config.external_fill_pattern.value :
ipRectilinear;
@ -224,7 +230,8 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
// apply half spacing using this flow's own spacing and generate infill
FillParams params;
params.density = 0.01 * density;
params.dont_adjust = true;
// params.dont_adjust = true;
params.dont_adjust = false;
Polylines polylines = f->fill_surface(&surface, params);
if (polylines.empty())
continue;
@ -248,12 +255,9 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
// Only concentric fills are not sorted.
collection.no_sort = f->no_sort();
for (Polylines::iterator it = polylines.begin(); it != polylines.end(); ++ it) {
ExtrusionPath *path = new ExtrusionPath(role);
ExtrusionPath *path = new ExtrusionPath(role, flow.mm3_per_mm(), flow.width, flow.height);
collection.entities.push_back(path);
path->polyline.points.swap(it->points);
path->mm3_per_mm = flow.mm3_per_mm();
path->width = flow.width,
path->height = flow.height;
}
}
}
@ -264,14 +268,9 @@ void make_fill(LayerRegion &layerm, ExtrusionEntityCollection &out)
// The path type could be ExtrusionPath, ExtrusionLoop or ExtrusionEntityCollection.
// Why the paths are unpacked?
for (ExtrusionEntitiesPtr::iterator thin_fill = layerm.thin_fills.entities.begin(); thin_fill != layerm.thin_fills.entities.end(); ++ thin_fill) {
#if 0
out.entities.push_back((*thin_fill)->clone());
assert(dynamic_cast<ExtrusionEntityCollection*>(out.entities.back()) != NULL);
#else
ExtrusionEntityCollection &collection = *(new ExtrusionEntityCollection());
out.entities.push_back(&collection);
collection.entities.push_back((*thin_fill)->clone());
#endif
}
}