//--------------------------------------------------------------------------------------------------
double _FindEdgeParam(TopoDS_Edge edge, SelectSubshapeAction selectAction)
{
// Calculate parameter on the edge
double umin = 0, umax = 0;
var curve = BRep_Tool.Curve(edge, ref umin, ref umax);
var viewAxis = selectAction.LastMouseEventData.PickAxis;
var extrema = new GeomAPI_ExtremaCurveCurve(curve, new Geom_Line(viewAxis));
if (extrema.NbExtrema() > 0)
{
double param1 = 0, param2 = 0;
extrema.LowerDistanceParameters(ref param1, ref param2);
return(param1);
}
else
{
return(Taper.CalculateBaseParameter(edge, 0.5));
}
}
//--------------------------------------------------------------------------------------------------
void _OnEdgeOrVertexSelected(SelectSubshapeAction selectAction)
{
if (selectAction.SelectedSubshapeType == SubshapeTypes.Edge ||
selectAction.SelectedSubshapeType == SubshapeTypes.Vertex)
{
selectAction.Stop();
Stop();
var faceRef = _TargetShape.GetSubshapeReference(_TargetBrep, _TargetFace);
if (faceRef == null)
{
Messages.Error("A subshape reference could not be produced for this face.");
Stop();
return;
}
var baseSubshapeRef = _TargetShape.GetSubshapeReference(_TargetBrep, selectAction.SelectedSubshape);
if (baseSubshapeRef == null)
{
Messages.Error("A subshape reference could not be produced for the selected edge or vertex.");
return;
}
// Calculate parameter on the edge, if any
double?edgeParam = null;
if (selectAction.SelectedSubshapeType == SubshapeTypes.Edge)
{
edgeParam = _FindEdgeParam(selectAction.SelectedSubshape.ToEdge(), selectAction);
}
// Create or update
if (_Mode == ToolMode.CreateNew)
{
// Create new
var taper = Taper.Create(_TargetBody, faceRef, baseSubshapeRef, 10.0);
if (taper != null)
{
if (edgeParam.HasValue)
{
taper.BaseParameter = edgeParam.Value;
}
InteractiveContext.Current.UndoHandler.Commit();
InteractiveContext.Current.WorkspaceController.Selection.SelectEntity(_TargetBody);
}
}
else if (_Mode == ToolMode.Reselect)
{
// Reselected face and base subshape
_TaperToChange.Face = faceRef;
_TaperToChange.BaseEdgeOrVertex = baseSubshapeRef;
if (edgeParam.HasValue)
{
_TaperToChange.BaseParameter = edgeParam.Value;
}
else
{
_TaperToChange.CalculateBaseParameter(0.5);
}
_TaperToChange.Invalidate();
InteractiveContext.Current.UndoHandler.Commit();
}
}
}
