//--------------------------------------------------------------------------------------------------
public IEnumerable <TopoDS_Edge> FindValidEdges(TopoDS_Shape sourceShape)
{
var analysis = new ShapeAnalysis_Edge();
var mapOfEdgesToFaces = new TopTools_IndexedDataMapOfShapeListOfShape(1);
TopExp.MapShapesAndAncestors(sourceShape, TopAbs_ShapeEnum.TopAbs_EDGE, TopAbs_ShapeEnum.TopAbs_FACE, mapOfEdgesToFaces);
foreach (var edge in sourceShape.Edges())
{
var valid = true;
var faces = mapOfEdgesToFaces.FindFromKey(edge).ToList();
// Check if we have no face
if (faces.Count == 0)
{
continue;
}
// Check if it is a seam edge
foreach (var face in faces)
{
if (analysis.IsSeam(edge, face.ToFace()))
{
valid = false;
break;
}
}
if (valid)
{
yield return(edge);
}
}
}
//--------------------------------------------------------------------------------------------------
void _OnFaceSelected(SelectSubshapeAction selectAction)
{
if (selectAction.SelectedSubshapeType == SubshapeTypes.Face)
{
var face = TopoDS.Face(selectAction.SelectedSubshape);
var brepAdaptor = new BRepAdaptor_Surface(face, true);
if (brepAdaptor.GetGeomType() != GeomAbs_SurfaceType.GeomAbs_Plane &&
brepAdaptor.GetGeomType() != GeomAbs_SurfaceType.GeomAbs_Cylinder &&
brepAdaptor.GetGeomType() != GeomAbs_SurfaceType.GeomAbs_Cone)
{
StatusText = "Selected face is not a plane, cylinder or cone type surface.";
selectAction.Reset();
return;
}
selectAction.Stop();
_TargetFace = face;
_Phase = Phase.BaseEdgeOrVertex;
_SubshapesOfFace = new List <TopoDS_Shape>();
var edges = face.Edges().Where(
edge =>
{
var analysis = new ShapeAnalysis_Edge();
return(!analysis.IsSeam(edge, face));
}).ToList();
_SubshapesOfFace.AddRange(edges);
var vertices = face.Vertices().Where(
vertex =>
{
var vertexEdges = edges.Where(edge => edge.Vertices().ContainsSame(vertex));
return(vertexEdges.Count() > 1);
});
_SubshapesOfFace.AddRange(vertices);
var newAction = new SelectSubshapeAction(this, _SubshapesOfFace);
if (!WorkspaceController.StartToolAction(newAction))
{
Stop();
return;
}
newAction.Previewed += _OnActionPreview;
newAction.Finished += _OnActionFinished;
StatusText = "Select base edge or vertex to define direction of taper.";
WorkspaceController.HudManager?.SetCursor(Cursors.SelectEdge);
}
}
