ShrlAlgoToolkit/ShrlAlgoToolkit.RevitAddins/FamMaster/MoveElementByRelationshipCmd.cs

using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;

using Nice3point.Revit.Toolkit.External;

namespace ShrlAlgoToolkit.RevitAddins.General;
/// <summary>
/// 相对移动
/// </summary>
[Transaction(TransactionMode.Manual)]
internal class MoveElementByRelationshipCmd : ExternalCommand
{
    public override void Execute()
    {
        var ids = UiDocument.Selection.GetElementIds();
        foreach (var id in ids)
        {
            var elem = Document.GetElement(id) as FamilyInstance;
            ;
            ElementTransformUtils.MoveElement(Document, id, elem.FacingOrientation * 121 / 304.8);
        }
        return;
    }
}