Continuation of Perpendicular Vector Question

graham_lock

Hi,

I inadvertently marked the original question as answered and couldn't see how to unmark it - is there a way?

To continue with the help provided by @NeilCooke …

I've created a test document which allows switching between tangential and perpendicular tracking.

This has generated another question:

1. Tangential tracking works fine if the curved edge is generated via a spline but if generated via an arc the profile is drawn outboard of the edge. This can be corrected by changing

line 126:

boxPlane = plane(edgeTangentLine.origin, -Y_DIRECTION, edgeTangentLine.direction);

to

boxPlane = plane(edgeTangentLine.origin, Y_DIRECTION, edgeTangentLine.direction);

but then spline generated curves are incorrectly calculated?

https://cad.onshape.com/documents/a210980f37f6eb8934643f1d/w/c438d98168a82355ea5d0764/e/f4d243419a7ec6ec132347ac

Any further help appreciated.

Thank you.

NeilCooke

It's because arcs are always computed counterclockwise whereas splines go in the direction they were drawn. Simple to fix:

https://cad.onshape.com/documents/6232edc86fa5b3933c9cc699/w/8a4b0f15bb93348c33e3d313/e/84625f4c121132eecc396ba9

NeilCooke

It's because arcs are always computed counterclockwise whereas splines go in the direction they were drawn. Simple to fix:

https://cad.onshape.com/documents/6232edc86fa5b3933c9cc699/w/8a4b0f15bb93348c33e3d313/e/84625f4c121132eecc396ba9

graham_lock

That's very clean! - Thank you.