//--------------------------------------------------------------------------------------------------
public TransformBodyTool(IEnumerable <Entity> targetList, PivotPoint pivotPoint, Options options)
{
Debug.Assert(targetList != null);
foreach (var target in targetList)
{
Body body = null;
if (target is Body)
{
body = (Body)target;
}
else if (target is Shape)
{
body = ((Shape)target).Body;
}
if (body != null && !_TargetBodies.Contains(body))
{
_TargetBodies.Add(body);
}
}
Debug.Assert(_TargetBodies.Any());
_PivotPoint = pivotPoint;
_Options = options;
_TargetAndLinkedBodies.Clear();
_TargetAndLinkedBodies.AddRange(_TargetBodies);
foreach (var targetBody in _TargetBodies)
{
targetBody.PropertyChanged += _TargetBody_PropertyChanged;
_TargetAndLinkedBodies.AddRange(targetBody.GetReferencedBodies());
}
_TargetAndLinkedBodies = _TargetAndLinkedBodies.Distinct().ToList();
}
//--------------------------------------------------------------------------------------------------
void _ComputeCoordinateSystem()
{
TopoDS_Shape ocShape;
if ((_TargetBodies.Count == 1) || _Options.HasFlag(Options.MultiBodyUseFirst))
{
// Single body, or Multishape using pivot of first shape
Body targetBody = _TargetBodies[0];
ocShape = targetBody.Shape?.GetTransformedBRep();
switch (_PivotPoint)
{
case PivotPoint.BodyPivot:
_CoordinateSystem = targetBody.GetCoordinateSystem();
break;
case PivotPoint.BoundingCenter:
_CoordinateSystem = targetBody.GetCoordinateSystem();
if (ocShape != null)
{
_CoordinateSystem.Location = ocShape.BoundingBox().Center();
}
break;
case PivotPoint.MassCenter:
_CoordinateSystem = targetBody.GetCoordinateSystem();
if (ocShape != null)
{
_CoordinateSystem.Location = ocShape.CenterOfMass();
}
break;
}
if (_Options.HasFlag(Options.WorldSpaceOrientation))
{
_CoordinateSystem = new Ax3(_CoordinateSystem.Location, Dir.DZ);
}
}
else
{
// Multiple shapes, use BBox center for all as pivot, and world space axis
Bnd_Box bndBox = new Bnd_Box();
foreach (var targetBody in _TargetBodies)
{
ocShape = targetBody.Shape?.GetTransformedBRep();
if (ocShape != null)
{
bndBox.Add(ocShape.BoundingBox());
}
}
_CoordinateSystem = Ax3.XOY;
_CoordinateSystem.Location = bndBox.Center();
}
}