0022869: EDF 7482 GEOM: Automatically create groups with the generation operations

[modules/geom.git] / src / GEOMUtils / GEOMUtils.cxx

diff --git a/src/GEOMUtils/GEOMUtils.cxx b/src/GEOMUtils/GEOMUtils.cxx
index 9b7ca2d970de5f23e4ee4db05819d217ab8de3ed..3e0b18977de279e5b07a1e1e15efad56bcf371f2 100644 (file)
--- a/src/GEOMUtils/GEOMUtils.cxx
+++ b/src/GEOMUtils/GEOMUtils.cxx
@@ -1236,3 +1236,54 @@ double GEOMUtils::DefaultDeflection()
 {
   return 0.001;
 }
+
+//=======================================================================
+//function : IsOpenPath
+//purpose  : 
+//=======================================================================
+bool GEOMUtils::IsOpenPath(const TopoDS_Shape &theShape)
+{
+  bool isOpen = true;
+
+  if (theShape.IsNull() == Standard_False) {
+    if (theShape.Closed()) {
+      // The shape is closed
+      isOpen = false;
+    } else {
+      const TopAbs_ShapeEnum aType = theShape.ShapeType();
+
+      if (aType == TopAbs_EDGE || aType == TopAbs_WIRE) {
+        // Check if path ends are coinsident.
+        TopoDS_Vertex aV[2];
+
+        if (aType == TopAbs_EDGE) {
+          // Edge
+          TopExp::Vertices(TopoDS::Edge(theShape), aV[0], aV[1]);
+        } else {
+          // Wire
+          TopExp::Vertices(TopoDS::Wire(theShape), aV[0], aV[1]);
+        }
+
+        if (aV[0].IsNull() == Standard_False &&
+            aV[1].IsNull() == Standard_False) {
+          if (aV[0].IsSame(aV[1])) {
+            // The shape is closed
+            isOpen = false;
+          } else {
+            const Standard_Real aTol1 = BRep_Tool::Tolerance(aV[0]);
+            const Standard_Real aTol2 = BRep_Tool::Tolerance(aV[1]);
+            const gp_Pnt        aPnt1 = BRep_Tool::Pnt(aV[0]);
+            const gp_Pnt        aPnt2 = BRep_Tool::Pnt(aV[1]);
+
+            if (aPnt1.Distance(aPnt2) <= aTol1 + aTol2) {
+              // The shape is closed
+              isOpen = false;
+            }
+          }
+        }
+      }
+    }
+  }
+
+  return isOpen;
+}