Author: janehu Date: 2008-10-29 14:22:27 -0500 (Wed, 29 Oct 2008) New Revision: 2182 Modified: cgm/trunk/geom/OCC/OCCModifyEngine.cpp Log: Added sweep_along_curve function, not tested yet. Modified: cgm/trunk/geom/OCC/OCCModifyEngine.cpp =================================================================== --- cgm/trunk/geom/OCC/OCCModifyEngine.cpp 2008-10-29 18:50:15 UTC (rev 2181) +++ cgm/trunk/geom/OCC/OCCModifyEngine.cpp 2008-10-29 19:22:27 UTC (rev 2182) @@ -47,6 +47,8 @@ #include "BRepSweep_Revol.hxx" #include "BRepPrimAPI_MakeCone.hxx" #include "BRepOffsetAPI_ThruSections.hxx" +#include "BRepLib_FuseEdges.hxx" +#include "BRepOffsetAPI_MakePipe.hxx" #include "BRepPrimAPI_MakeTorus.hxx" #include "BRepPrimAPI_MakeCylinder.hxx" #include "BRepBuilderAPI_Transform.hxx" @@ -4289,22 +4291,112 @@ //=============================================================================== // Function : sweep_along_curve // Member Type: PUBLIC -// Description: -// Author : John Fowler -// Date : 10/02 +// Description: The ref_edge_list must provide a list of curves which are +// connected, and making G1 continuous wire. +// Author : Jane Hu +// Date : 10/08 //=============================================================================== CubitStatus OCCModifyEngine::sweep_along_curve( - DLIList<GeometryEntity*>& /*ref_ent_list*/, - DLIList<BodySM*>& /*result_body_list*/, - DLIList<Curve*>& /*ref_edge_list*/, - double /*draft_angle*/, - int /*draft_type*/, - bool /*rigid*/, - Surface* stop_surf, - BodySM* to_body) const + DLIList<GeometryEntity*>& ref_ent_list, + DLIList<BodySM*>& result_body_list, + DLIList<Curve*>& ref_edge_list, + double draft_angle, //only used for straight curve case + int draft_type, //only used for straight curve case + bool rigid, //not used + Surface* stop_surf, //not used + BodySM* to_body) const //not used { - PRINT_ERROR("Option not supported for mesh based geometry.\n"); - return CUBIT_FAILURE; + //make wire out of ref_edge_list + BRepBuilderAPI_MakeWire awire; + TopTools_ListOfShape L; + OCCCurve* occ_curve = NULL; + GeometryType type; + int num_curve = 0; + for(int i = 0; i < ref_edge_list.size(); i++) + { + Curve* curve = ref_edge_list.get_and_step(); + occ_curve = CAST_TO(curve, OCCCurve); + if(!occ_curve) + continue; + TopoDS_Edge* topoedge = occ_curve->get_TopoDS_Edge( ); + BRepBuilderAPI_Copy api_copy(*topoedge); + TopoDS_Shape newShape = api_copy.ModifiedShape(*topoedge); + L.Append(newShape); + type = occ_curve->geometry_type(); + num_curve++; + } + if(L.IsEmpty()) + { + PRINT_ERROR("There's no valid sweeping path.\n"); + return CUBIT_FAILURE; + } + + if(num_curve == 1 && type == STRAIGHT_CURVE_TYPE && draft_angle != 0.0) + { + DLIList<OCCPoint*> point_list; + occ_curve->get_points(point_list); + CubitVector v1 = point_list.get_and_step()->coordinates(); + CubitVector v2 = point_list.get()->coordinates(); + CubitVector sweep_vector = v2-v1; + return sweep_translational(ref_ent_list,result_body_list,sweep_vector, + draft_angle, draft_type, CUBIT_FALSE, + rigid, stop_surf, to_body); + } + awire.Add(L); + TopoDS_Wire wire; + wire = awire.Wire(); + + BRepTools_WireExplorer it(wire); + int num_edges = 0; + for(it; it.More(); it.Next()) + num_edges++; + + BRepLib_FuseEdges fuser(wire); + fuser.SetConcatBSpl(); + fuser.Perform(); + int removed_vertices = fuser.NbVertices(); + if(removed_vertices < num_edges - 1) + { + PRINT_ERROR("The curve_list provided has to form a G1 continuous spline.\n"); + return CUBIT_FAILURE; + } + TopoDS_Shape spline = fuser.Shape(); + wire = TopoDS::Wire(spline); + + DLIList<TopologyBridge*> tbs; + for (int i = ref_ent_list.size(); i > 0; i--) + { + GeometryEntity *ref_ent = ref_ent_list.get_and_step(); + //Make copy of the surface or curve for later to build solid. + OCCSurface* surface = CAST_TO(ref_ent, OCCSurface); + OCCCurve* curve = CAST_TO(ref_ent, OCCCurve); + TopoDS_Shape toposhape ; + if(surface != NULL) + { + CubitStatus stat = get_sweepable_toposhape(surface, (CubitVector*)NULL, toposhape); + if(!stat) + continue; + } + else if(curve != NULL) + { + CubitStatus stat = get_sweepable_toposhape(curve, toposhape); + if(!stat) + continue; + } + + //sweep along the wire + BRepOffsetAPI_MakePipe maker(wire, toposhape); + TopoDS_Shape newShape = maker.Shape(); + + tbs += OCCQueryEngine::instance()->populate_topology_bridge(newShape); + assert(tbs.size() == 1); + + BodySM* bodysm = CAST_TO(tbs.get(), BodySM); + if (bodysm) + result_body_list.append(bodysm); + continue; + } + return CUBIT_SUCCESS; } //HEADER- Webcut-related functions