spline tangent to surface constraint

[cekuhnen]

is there anyway to make a spline tangent to a surface in Fusion and not just snap with the endpoint to an edge of a surface?

[jiang.peng]

Is the surface the "circle" face or lofted surface?

thanks

[yqliu]

I think one method is to Project Cut Edge of the body on the the spline sketch, and then apply tangent constraint onto the spine and the projected curve.

[cekuhnen]

That would be a doable workaround but it adds more complexity to the model.

[yqliu]

Agree. It adds complexity. And my proposal won't work if the spline is 3D, meaning a non-planar curve. Actually there might be some confusion about how to define " spline tangent to surface". From your perspective, what should the expected result be?

[cekuhnen]

Actually projecting 3D curves onto a surface works.

You can even also constraint a 3D curve to those projected curves - but only constraint coincident and tangent work and thus I do not have any more control in sculpting

the curve shape.

However for a 3D cuve I also would like to be able to snap the curve handle to the projected line - of course the constraints here only work because the projected curve is a line.

This is why there should be a g2 with editable weight constraint for the curve resulting more into a blend curve tool.