How do i get rotation of wall using revit api?

Question

If an Element is family instance then:

(FamilyInstance.Location as LocationPoint).Rotation;

I can easily get a rotation easily for family instance.

If I try for wall

Curve curve = ((Wall).Location as LocationCurve).Curve;

Or anything like that.

For example :

1. In preceding image, trying to rotate wall to 90 Degree.

2. In below Image, after rotating 90 Degree

Need to get the rotated angle of the wall.

Answer 1

如果您的墙曲线是一条直线，则可以从该线抓取角度：设V为从墙曲线起点到终点的矢量，并确定其与X轴的角度：angle = V.AngleTo(XYZ.BasisX) 。