Bugfix of bottom bridges. If close regions shall be closed by bridges,

these regions are grown to anchor the bridge lines to the bottom surface.
The grown regions may overlap. In that case the regions are now merged
before the bridging direction is calculated for the merged region.

1 files changed, 27 insertions, 0 deletions

diff --git a/xs/src/libslic3r/SurfaceCollection.cpp b/xs/src/libslic3r/SurfaceCollection.cpp
index 5fbb913b1..c30998df4 100644
--- a/xs/src/libslic3r/SurfaceCollection.cpp
+++ b/xs/src/libslic3r/SurfaceCollection.cpp
@@ -1,4 +1,7 @@
 #include "SurfaceCollection.hpp"
+#include "BoundingBox.hpp"
+#include "SVG.hpp"
+
 #include <map>
 
 namespace Slic3r {
@@ -213,4 +216,28 @@ SurfaceCollection::append(const SurfaceType surfaceType, const Slic3r::ExPolygon
         this->surfaces.push_back(Slic3r::Surface(surfaceType, *it));
 }
 
+void SurfaceCollection::export_to_svg(const char *path, bool show_labels) 
+{
+    BoundingBox bbox;
+    for (Surfaces::const_iterator surface = this->surfaces.begin(); surface != this->surfaces.end(); ++surface)
+        bbox.merge(get_extents(surface->expolygon));
+    Point legend_size = export_surface_type_legend_to_svg_box_size();
+    Point legend_pos(bbox.min.x, bbox.max.y);
+    bbox.merge(Point(std::max(bbox.min.x + legend_size.x, bbox.max.x), bbox.max.y + legend_size.y));
+
+    SVG svg(path, bbox);
+    const float transparency = 0.5f;
+    for (Surfaces::const_iterator surface = this->surfaces.begin(); surface != this->surfaces.end(); ++surface) {
+        svg.draw(surface->expolygon, surface_type_to_color_name(surface->surface_type), transparency);
+        if (show_labels) {
+            int idx = int(surface - this->surfaces.cbegin());
+            char label[64];
+            sprintf(label, "%d", idx);
+            svg.draw_text(surface->expolygon.contour.points.front(), label, "black");
+        }
+    }
+    export_surface_type_legend_to_svg(svg, legend_pos);
+    svg.Close();
+}
+
 }