Can you use a 'Law' within a sketch?

[l3ob]

I want to offset a curve within a sketch based on a 'Law'. This will give me a variable offset results. I believe this how I created the control curves for spring-back tooling sufaces in V4, it's been a long time though. I haven't found a way to use a defined 'Law' in a sketch for offset curves. Before I write a enhancement request, I wanted to ask first; Is it possible?

 

[DBezaire]

Can you give me a description of your law? In the Constraint definition dialog box, RC (Right click) --> Edit formula proceed down the first column to law - select it.
In the right column (Members of Law) double pick evaluate. Inside the brackets pick the Fog law you created. The fog law is located under the design table tab.

You might need KWA for the laws you want to create. Send an example.

Regards,
Derek

 

[itsmyjob]

I do not think you can bring the LAW inside the sketch...

But you can create your curve ouside then sketch then project it in the sketch.

Eric N.
indocti discant et ament meminisse periti ​

 

[l3ob]

Let me add some more detail: My aim is to intersect a surface within a sketch, offset the intersection with a law (to acheive a variable offset), and then use this sketch with 'Adaptive Sweep' to create the variable offset surface. I've done something simular with adaptive sweep to create a deflected surface. The use of a law within the sketch would be a big help. If it's not possible yet, I'll request an enhancement. They may add this option...??

Note: you have to identify several 'sections' in adaptive sweep for it to maintain a reasonable accuracy.

 

[jackk]

Bob....

I'd suggest you follow Eric's advice, and don't use a sketch.

Start with a plane (the same plane you'd use to make the sketch). Intersect the surface with the plane to get the reference curve. Use Parallel Curve to offset the reference curve based on your Law. And use this Parallel curve to make your multi-section surface.

 

[Kapitan]

Earlier this year I wrote about Laws and their application here. Try looking in these two: Thread560-176891 and Thread560-191644

I'm sure there's no need to use Adaptive sweep for what's described, or to try and do it Sketch: it's all there. As Jack says, use the, misleadingly named, Parallel Curve - controlled by the Law.

 

[itsmyjob]

now that you give more info...

I do not think your way will work as the outside curve (intersection) will not follow the adaptive sweep.

you might have to decompose your construction and offset surfaces not using adaptive sweep.

Eric N.
indocti discant et ament meminisse periti ​