https://forums.autodesk.com/t5/revit-api-forum/how-to-find-the-transformation-matrix-of-family-symbol-profile/m-p/12373061#M8704 <P>Basically, the profile should stay on the sketch plane of the start point or end point or the blend, depending on whether it is bottom or top profile. If you draw you profile, it is quite easy to get the transformation based on its sketch plane (origin, Xvec, Yvec, normal); but if you use a loaded profile, it is quite difficult to do so because of the missing sketch plane.</P> Mon, 13 Nov 2023 06:49:42 GMT longt61 2023-11-13T06:49:42Z https://forums.autodesk.com/t5/revit-api-forum/how-to-find-the-transformation-matrix-of-family-symbol-profile/m-p/12367524#M8703 <P>I've created a swept blend, which is from a circle to a hexagon with a circle arc path.</P><P>Then I've created a sweep with a selected path (see the blue line in part 1 and the result shows as part 2) and a loaded profile (see picture part 3). (That means&nbsp;Path3d is not null in sweep and&nbsp;ProfileSymbol is not null in sweep.)</P><P>It is obvious that the profile has been transformed before creating sweep. The profile has been rotated and moved.</P><P>How to find the transformation matrix (Autodesk.Revit.DB.Transform) ? I didn't find it.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-center" image-alt="rvt-question.png" style="width: 999px;"><img src="https://forums.autodesk.com/t5/image/serverpage/image-id/1291151i542C7958988670C6/image-size/large?v=v2&amp;px=999" role="button" title="rvt-question.png" alt="rvt-question.png" /></span></P><P>&nbsp;</P><DIV><DIV class="">&nbsp;</DIV></DIV> Fri, 10 Nov 2023 02:45:34 GMT https://forums.autodesk.com/t5/revit-api-forum/how-to-find-the-transformation-matrix-of-family-symbol-profile/m-p/12367524#M8703 myownroc 2023-11-10T02:45:34Z https://forums.autodesk.com/t5/revit-api-forum/how-to-find-the-transformation-matrix-of-family-symbol-profile/m-p/12373061#M8704 <P>Basically, the profile should stay on the sketch plane of the start point or end point or the blend, depending on whether it is bottom or top profile. If you draw you profile, it is quite easy to get the transformation based on its sketch plane (origin, Xvec, Yvec, normal); but if you use a loaded profile, it is quite difficult to do so because of the missing sketch plane.</P> Mon, 13 Nov 2023 06:49:42 GMT https://forums.autodesk.com/t5/revit-api-forum/how-to-find-the-transformation-matrix-of-family-symbol-profile/m-p/12373061#M8704 longt61 2023-11-13T06:49:42Z