Finished implementation of TriangleMesh->split

xs/src/ExPolygon.cpp

@@ -51,7 +51,7 @@ ExPolygon::is_valid() const
 }
 
 SV*
-ExPolygon::to_SV() {
+ExPolygon::to_AV() {
     const unsigned int num_holes = this->holes.size();
     AV* av = newAV();
     av_extend(av, num_holes);  // -1 +1

xs/src/ExPolygon.hpp

@@ -13,7 +13,7 @@ class ExPolygon
     Polygons holes;
     void from_SV(SV* poly_sv);
     void from_SV_check(SV* poly_sv);
-    SV* to_SV();
+    SV* to_AV();
     SV* to_SV_ref();
     SV* to_SV_clone_ref() const;
     SV* to_SV_pureperl() const;

xs/src/Line.cpp

@@ -61,7 +61,7 @@ Line::from_SV_check(SV* line_sv)
 }
 
 SV*
-Line::to_SV() {
+Line::to_AV() {
     AV* av = newAV();
     av_extend(av, 1);
     

xs/src/Line.hpp

@@ -15,7 +15,7 @@ class Line
     explicit Line(Point _a, Point _b): a(_a), b(_b) {};
     void from_SV(SV* line_sv);
     void from_SV_check(SV* line_sv);
-    SV* to_SV();
+    SV* to_AV();
     SV* to_SV_ref();
     SV* to_SV_clone_ref() const;
     SV* to_SV_pureperl() const;

xs/src/MultiPoint.cpp

@@ -62,7 +62,7 @@ MultiPoint::from_SV_check(SV* poly_sv)
 }
 
 SV*
-MultiPoint::to_SV() {
+MultiPoint::to_AV() {
     const unsigned int num_points = this->points.size();
     AV* av = newAV();
     av_extend(av, num_points-1);

xs/src/MultiPoint.hpp

@@ -13,7 +13,7 @@ class MultiPoint
     Points points;
     void from_SV(SV* poly_sv);
     void from_SV_check(SV* poly_sv);
-    SV* to_SV();
+    SV* to_AV();
     SV* to_SV_pureperl() const;
     void scale(double factor);
     void translate(double x, double y);

xs/src/TriangleMesh.cpp

@@ -16,6 +16,13 @@ TriangleMesh::~TriangleMesh() {
     stl_close(&stl);
 }
 
+SV*
+TriangleMesh::to_SV() {
+    SV* sv = newSV(0);
+    sv_setref_pv( sv, "Slic3r::TriangleMesh::XS", (void*)this );
+    return sv;
+}
+
 void
 TriangleMesh::ReadSTLFile(char* input_file) {
     stl_open(&stl, input_file);
@@ -471,10 +478,10 @@ TriangleMesh::slice(const std::vector<double> &z)
     return layers;
 }
 
-std::vector<TriangleMesh>
+TriangleMeshPtrs
 TriangleMesh::split() const
 {
-    std::vector<TriangleMesh> meshes;
+    TriangleMeshPtrs meshes;
     std::set<int> seen_facets;
     
     // loop while we have remaining facets
@@ -483,7 +490,8 @@ TriangleMesh::split() const
         std::queue<int> facet_queue;
         std::deque<int> facets;
         for (int facet_idx = 0; facet_idx < this->stl.stats.number_of_facets; facet_idx++) {
-            if (seen_facets.find(facet_idx) != seen_facets.end()) {
+            if (seen_facets.find(facet_idx) == seen_facets.end()) {
+                // if facet was not seen put it into queue and start searching
                 facet_queue.push(facet_idx);
                 break;
             }
@@ -493,7 +501,7 @@ TriangleMesh::split() const
         while (!facet_queue.empty()) {
             int facet_idx = facet_queue.front();
             facet_queue.pop();
-            if (seen_facets.find(facet_idx) == seen_facets.end()) continue;
+            if (seen_facets.find(facet_idx) != seen_facets.end()) continue;
             facets.push_back(facet_idx);
             for (int j = 0; j <= 2; j++) {
                 facet_queue.push(this->stl.neighbors_start[facet_idx].neighbor[j]);
@@ -501,8 +509,8 @@ TriangleMesh::split() const
             seen_facets.insert(facet_idx);
         }
         
-        meshes.resize(meshes.size()+1);
-        TriangleMesh* mesh = &(meshes.back());
+        TriangleMesh* mesh = new TriangleMesh;
+        meshes.push_back(mesh);
         stl_initialize(&mesh->stl);
         mesh->stl.stats.type = inmemory;
         mesh->stl.stats.number_of_facets = facets.size();

xs/src/TriangleMesh.hpp

@@ -9,11 +9,15 @@
 
 namespace Slic3r {
 
+class TriangleMesh;
+typedef std::vector<TriangleMesh*> TriangleMeshPtrs;
+
 class TriangleMesh
 {
     public:
     TriangleMesh();
     ~TriangleMesh();
+    SV* to_SV();
     void ReadSTLFile(char* input_file);
     void ReadFromPerl(SV* vertices, SV* facets);
     void Repair();
@@ -23,7 +27,7 @@ class TriangleMesh
     void align_to_origin();
     void rotate(double angle, Point* center);
     std::vector<Polygons>* slice(const std::vector<double> &z);
-    std::vector<TriangleMesh> split() const;
+    TriangleMeshPtrs split() const;
     stl_file stl;
 };