1 files changed, 75 insertions, 0 deletions
diff --git a/xs/src/libslic3r/SurfaceCollection.cpp b/xs/src/libslic3r/SurfaceCollection.cpp
new file mode 100644
index 000000000..1590e7a21
--- /dev/null
+++ b/xs/src/libslic3r/SurfaceCollection.cpp
@@ -0,0 +1,75 @@
+#include "SurfaceCollection.hpp"
+#include <map>
+
+namespace Slic3r {
+
+SurfaceCollection::operator Polygons() const
+{
+    Polygons polygons;
+    for (Surfaces::const_iterator surface = this->surfaces.begin(); surface != this->surfaces.end(); ++surface) {
+        Polygons surface_p = surface->expolygon;
+        polygons.insert(polygons.end(), surface_p.begin(), surface_p.end());
+    }
+    return polygons;
+}
+
+SurfaceCollection::operator ExPolygons() const
+{
+    ExPolygons expp;
+    expp.reserve(this->surfaces.size());
+    for (Surfaces::const_iterator surface = this->surfaces.begin(); surface != this->surfaces.end(); ++surface) {
+        expp.push_back(surface->expolygon);
+    }
+    return expp;
+}
+
+void
+SurfaceCollection::simplify(double tolerance)
+{
+    Surfaces ss;
+    for (Surfaces::const_iterator it_s = this->surfaces.begin(); it_s != this->surfaces.end(); ++it_s) {
+        ExPolygons expp;
+        it_s->expolygon.simplify(tolerance, expp);
+        for (ExPolygons::const_iterator it_e = expp.begin(); it_e != expp.end(); ++it_e) {
+            Surface s = *it_s;
+            s.expolygon = *it_e;
+            ss.push_back(s);
+        }
+    }
+    this->surfaces = ss;
+}
+
+/* group surfaces by common properties */
+void
+SurfaceCollection::group(std::vector<SurfacesPtr> *retval)
+{
+    for (Surfaces::iterator it = this->surfaces.begin(); it != this->surfaces.end(); ++it) {
+        // find a group with the same properties
+        SurfacesPtr* group = NULL;
+        for (std::vector<SurfacesPtr>::iterator git = retval->begin(); git != retval->end(); ++git) {
+            Surface* gkey = git->front();
+            if (   gkey->surface_type      == it->surface_type
+                && gkey->thickness         == it->thickness
+                && gkey->thickness_layers  == it->thickness_layers
+                && gkey->bridge_angle      == it->bridge_angle) {
+                group = &*git;
+                break;
+            }
+        }
+        
+        // if no group with these properties exists, add one
+        if (group == NULL) {
+            retval->resize(retval->size() + 1);
+            group = &retval->back();
+        }
+        
+        // append surface to group
+        group->push_back(&*it);
+    }
+}
+
+#ifdef SLIC3RXS
+REGISTER_CLASS(SurfaceCollection, "Surface::Collection");
+#endif
+
+}