/// <summary>
/// Read a history record and extract the references for the antecedent objects.
/// </summary>
private bool ReadHistory(ReplayHistoryData replay, ref ObjRef railObjRef, ref ObjRef shapeObjRef, ref double tolerance)
{
if (HISTORY_VERSION != replay.HistoryVersion)
{
return(false);
}
railObjRef = replay.GetRhinoObjRef(0);
if (null == railObjRef)
{
return(false);
}
shapeObjRef = replay.GetRhinoObjRef(1);
if (null == shapeObjRef)
{
return(false);
}
if (!replay.TryGetDouble(2, out tolerance))
{
return(false);
}
return(true);
}
/// <summary>
/// Rhino calls the virtual ReplayHistory functions to to remake an objects when inputs have changed.
/// </summary>
protected override bool ReplayHistory(ReplayHistoryData replay)
{
ObjRef rail_objref = null;
ObjRef shape_objref = null;
double tolerance = RhinoMath.UnsetValue;
if (!ReadHistory(replay, ref rail_objref, ref shape_objref, ref tolerance))
{
return(false);
}
Rhino.Geometry.Curve rail_curve = rail_objref.Curve();
if (null == rail_curve)
{
return(false);
}
Rhino.Geometry.Curve shape_curve = shape_objref.Curve();
if (null == shape_curve)
{
return(false);
}
if (!Rhino.RhinoMath.IsValidDouble(tolerance))
{
tolerance = RhinoDoc.ActiveDoc.ModelAbsoluteTolerance;
}
Brep[] brep = Brep.CreateFromSweep(rail_curve, shape_curve, false, tolerance);
if (null == brep || 0 == brep.Length)
{
return(false);
}
for (int i = 0; i < brep.Length; i++)
{
if (null != replay.Results[i])
{
replay.Results[i].UpdateToBrep(brep[i], null);
}
else
{
break;
}
}
return(true);
}
