OCC: add basic sewing

Cassiopee/OCC/OCC/Atomic/sewing.cpp

@@ -0,0 +1,91 @@
+/*    
+    Copyright 2013-2024 Onera.
+
+    This file is part of Cassiopee.
+
+    Cassiopee is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Cassiopee is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with Cassiopee.  If not, see <http://www.gnu.org/licenses/>.
+*/
+// CAD split for parallel
+#include "occ.h"
+
+#include "TopoDS.hxx"
+#include "BRep_Tool.hxx"
+#include "ShapeAnalysis.hxx"
+#include "BRepAdaptor_Curve.hxx"
+#include "TopExp.hxx"
+#include "TopExp_Explorer.hxx"
+#include "TopTools_IndexedMapOfShape.hxx"
+#include "ShapeUpgrade_FaceDivide.hxx"
+#include "ShapeUpgrade_ShapeDivideArea.hxx"
+#include "ShapeUpgrade_ShapeDivideClosed.hxx"
+#include "ShapeUpgrade_ClosedFaceDivide.hxx"
+#include "ShapeUpgrade_SplitSurfaceArea.hxx"
+#include "TColGeom_SequenceOfSurface.hxx"
+#include "ShapeExtend_CompositeSurface.hxx"
+#include "ShapeBuild_ReShape.hxx"
+#include "BRep_Builder.hxx"
+#include "ShapeUpgrade_ShapeDivideClosedEdges.hxx"
+#include "BRepBuilderAPI_Sewing.hxx"
+
+//=====================================================================
+// Sew faces removing extra edges
+//=====================================================================
+PyObject* K_OCC::sewing(PyObject* self, PyObject* args)
+{
+  PyObject* hook; E_Float tol;
+  if (!PYPARSETUPLE_(args, O_ R_, &hook, &tol)) return NULL;
+
+  void** packet = NULL;
+#if (PY_MAJOR_VERSION == 2 && PY_MINOR_VERSION < 7) || (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION < 1)
+  packet = (void**) PyCObject_AsVoidPtr(hook);
+#else
+  packet = (void**) PyCapsule_GetPointer(hook, NULL);
+#endif
+
+  //TopTools_IndexedMapOfShape& edges = *(TopTools_IndexedMapOfShape*)packet[2];
+  //TopTools_IndexedMapOfShape& surfaces = *(TopTools_IndexedMapOfShape*)packet[1];
+
+  // try on all shape
+  TopoDS_Shape* shp = (TopoDS_Shape*)packet[0];
+
+
+  printf("sew top shape\n");
+
+  const Standard_Real tolerance = tol;
+  BRepBuilderAPI_Sewing sewer(tolerance);
+  sewer.Add(*shp);
+  sewer.Perform();
+
+  TopoDS_Shape* newshp = new TopoDS_Shape(sewer.SewedShape());
+
+  packet[0] = newshp;
+  // Extract surfaces
+  TopTools_IndexedMapOfShape* ptr = (TopTools_IndexedMapOfShape*)packet[1];
+  delete ptr;
+  TopTools_IndexedMapOfShape* sf = new TopTools_IndexedMapOfShape();
+  TopExp::MapShapes(*newshp, TopAbs_FACE, *sf);
+  packet[1] = sf;
+
+  // Extract edges
+  TopTools_IndexedMapOfShape* ptr2 = (TopTools_IndexedMapOfShape*)packet[2];
+  delete ptr2;
+  TopTools_IndexedMapOfShape* se = new TopTools_IndexedMapOfShape();
+  TopExp::MapShapes(*newshp, TopAbs_EDGE, *se);
+  packet[2] = se;
+  printf("INFO: after sewing: Nb edges=%d\n", se->Extent());
+  printf("INFO: after sewing: Nb faces=%d\n", sf->Extent());
+
+  Py_INCREF(Py_None);
+  return Py_None;
+}

Cassiopee/OCC/OCC/Atomic/splitter.cpp

@@ -29,7 +29,6 @@
 #include "GCPnts_AbscissaPoint.hxx" 
 #include "GCPnts_UniformDeflection.hxx"
 #include "GCPnts_UniformAbscissa.hxx"
-#include "TopTools_IndexedMapOfShape.hxx"
 #include "TopExp.hxx"
 #include "TopExp_Explorer.hxx"
 #include "TopTools_IndexedMapOfShape.hxx"

Cassiopee/OCC/OCC/occ.cpp

@@ -69,6 +69,7 @@ static PyMethodDef Pyocc [] =
   {"splitFaces", K_OCC::splitFaces, METH_VARARGS},
   {"fixShape", K_OCC::fixShape, METH_VARARGS},
   {"trimFaces", K_OCC::trimFaces, METH_VARARGS},
+  {"sewing", K_OCC::sewing, METH_VARARGS},
 
   {"getOppData", K_OCC::getOppData, METH_VARARGS},
 

Cassiopee/OCC/OCC/occ.h

@@ -68,6 +68,7 @@ namespace K_OCC
   PyObject* splitFaces(PyObject* self, PyObject* args);
   PyObject* fixShape(PyObject* self, PyObject* args);
   PyObject* trimFaces(PyObject* self, PyObject* args);
+  PyObject* sewing(PyObject* self, PyObject* args);
 
   PyObject* getOppData(PyObject* self, PyObject* args);
 

Cassiopee/OCC/srcs.py

@@ -53,9 +53,11 @@ def getFiles(module):
         'OCC/Atomic/analyse.cpp',
         'OCC/Atomic/getFaceArea.cpp',
         'OCC/Atomic/areEdgeIdentical.cpp',
+
         'OCC/Atomic/splitter.cpp',
         'OCC/Atomic/fix.cpp',
         'OCC/Atomic/trim.cpp',
+        'OCC/Atomic/sewing.cpp',
 
         'OCC/Atomic/getOppData.cpp']