AngularDimension set DefPoint bug

Hi @dale,

there seems to be a bug in setting DefPoint1 and DefPoint2 of an AngularDimension. If the new point is on a line which would not change the angle of the angular dimension, the DefPoint is not set. Below image shows what i want to do. DefPoint1 (A) should be moved to point B without changing the angle of the dimension object.

I’ve found that i can trick it by first moving it away and then back (see commented out code):

def DoSomething():
    dim_id = rs.GetObject("AngDim", rs.filter.annotation, True, False)
    if not dim_id: return
    ang_dim = rs.coercerhinoobject(dim_id, True)
    pt = rs.GetPoint("DefPoint1")
    if not pt: return
    _, s, t = ang_dim.Geometry.Plane.ClosestParameter(pt)
    # this fails
    ang_dim.Geometry.DefPoint1 = Rhino.Geometry.Point2d(s, t)
    # this works
    #ang_dim.Geometry.DefPoint1 = Rhino.Geometry.Point2d(s+0.01, t+0.01)
    #ang_dim.Geometry.DefPoint1 = Rhino.Geometry.Point2d(s-0.01, t-0.01)


Here is the file: DefPointBug.3dm (38.6 KB)

Please note that i want to set these points before adding the AngularDimension to the document. Above example is just for illustration of the bug.

EDIT: I’ve found AdjustFromPoints which seems to allow to set DefPoint properly, but it required conversion from 2d to 3d.

@Alain, can you help with this?

@clement, it’s been logged.
Thanks for reporting it.

RH-57279 is fixed in the latest Service Release Candidate