Access linear dimension length scale in layouts

Scripting
,
1

Hi

I am trying to write a script that bakes linear dimensions directly to a layout.

I’ve managed to get it working so far as when the layout is active the dimension appears. But, I can’t figure out a way to get the length value of the dimension to scale according to the drawing. The linear dimension class does not seem to allow access to this? Or maybe I am missing something or I need a different strategy?

Attaching the work so far in the hope someone here can help.

layoutScriptRhFile.3dm (37.2 KB)

Make-dimensions-in-layout_rev1.gh (9.0 KB)

Best regards,
Jacob

2

Found the answer myself. Apparently overlooked the property Rhino.Geometry.LinearDimension.DistanceScale where I can just use the ratio I get from the layout boundary

import rhinoscriptsyntax as rs
import Rhino
import scriptcontext as sc

if bake:
    sc.doc = Rhino.RhinoDoc.ActiveDoc
    
    layoutBoundary = rs.coercerhinoobject(layoutBoundaryID)
    wtpTransf = layoutBoundary.WorldToPageTransform
    
    detailView = layoutBoundary.DetailGeometry
    ratio = detailView.PageToModelRatio 
    
    vec = Rhino.Geometry.Vector3d(dimPtB.X - dimPtA.X, dimPtB.Y - dimPtA.Y, 0)
    vecPerp = Rhino.Geometry.Vector3d(-(dimPtB.Y - dimPtA.Y), dimPtB.X - dimPtA.X, 0)
    vecPerp.Unitize()
    vecPerp *= -dimOffset
    
    ptOnDim = Rhino.Geometry.Point3d((dimPtA+dimPtB)*.5)
    ptOnDim += vecPerp
    
    dimPlane = Rhino.Geometry.Plane(dimPtA, vec, vecPerp)
    
    rc, uA, vA = dimPlane.ClosestParameter(dimPtA)
    rc, uB, vB = dimPlane.ClosestParameter(dimPtB)
    rc, uM, vM = dimPlane.ClosestParameter(ptOnDim)    
    
    linearDim = Rhino.Geometry.LinearDimension(dimPlane, Rhino.Geometry.Point2d(uA, vA), Rhino.Geometry.Point2d(uB, vB), Rhino.Geometry.Point2d(uM, vM))
    linearDim.Transform(wtpTransf)
    linearDim.DistanceScale = 1/ratio

    Rhino.Geometry.LinearDimension.SetUserString
    rhino_obj = sc.doc.Objects.Add(linearDim)
    
    sc.doc = ghdoc
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