Evaluate mid point with angle

Converters/Autocad/Speckle.Converters.AutocadShared/ToSpeckle/Raw/CircularArc3dToSpeckleRawConverter.cs

@@ -27,16 +27,7 @@ public SOG.Arc Convert(AG.CircularArc3d target)
     SOG.Point end = _pointConverter.Convert(target.EndPoint);
     double startParam = target.GetParameterOf(target.StartPoint);
     double endParam = target.GetParameterOf(target.EndPoint);
-    AG.Point3d midPoint = target.EvaluatePoint(endParam - startParam / 2.0);
-
-    // some circular arcs will **not** return a correct value from `EvaluatePoint` using the indicated parameter at the midpoint.
-    // so far, this has happened with some arc segments in the polyline method. They will have an end param > 1, and evaluatePoint returns the endpoint
-    // this is why we are checking for midpoint == endpoint, and using a [0,1] parameterization if this is the case.
-    if (midPoint.IsEqualTo(target.EndPoint))
-    {
-      midPoint = target.EvaluatePoint(0.5);
-    }
-
+    AG.Point3d midPoint = target.EvaluatePoint(target.StartAngle + (target.EndAngle - target.StartAngle) / 2);
     SOG.Point mid = _pointConverter.Convert(midPoint);
 
     SOG.Arc arc =