Problem: opPlane() with a rotated coordSystem creates a "non-rotated" plane

gert_rieger

I'm trying to write a feature script that takes a curve and a point as parameters (among others), and creates a plane with the x-axis pointing in the direction of that curve's tangent at the given point.

(The motivation is, I want to then manually draw a sketch on that plane that extends the curve in some way.)

Everything works fine EXCEPT opPlane() seems to compute an x-axis of its own instead of using the one I give as part of the CoordSystem I pass in as a parameter.

To demonstrate the problem, I "debug()" the coordSystem. It's obvious that the coordSystem is rotated to match the curve's tangent, as intended. But the plane comes out "straight", that is, oriented along the global axes.

The same happens with "plane(origin, normal, x)". And the pop-up info in the feature script editor even says "Creates a plane which fully specifies its orientation"!

Unless I'm making a subtle mistake, this looks like a bug to me.

https://cad.onshape.com/documents/943dd2fd8b82cc5db6a8d992/w/ea4e52436f0687008c5a807e/e/a775cc83eb33f5213287ace3

My feature script is in the tab "TangentPlane FS". A demo call is in the tab "Eye". Double-click the feature "TangentPlane 1" in the feature list to see the "debugged" coordSystem.

NeilCooke

This is not a bug, it's just the way it works (all planes are oriented to world CSys). Instead of creating a plane, create a mate connector using opMateConnector, then use that as your sketch plane.

NeilCooke

This is not a bug, it's just the way it works (all planes are oriented to world CSys). Instead of creating a plane, create a mate connector using opMateConnector, then use that as your sketch plane.

gert_rieger

Thanks Neil! Mate connectors work for me.