I´m trying to make shoe lasts using Rhino but I am stuck on a specific problem. I need help on how to make a section that I can move in any direction and it updates automatically. I also like the curve length to update. I have ssen this done in a movie on youtube. See these two pictures.
With history on I projected a line to the surface. It wrapped the surface and I could meassure it. So far all good. But when I use the gunball to move the “section” it does not update and I get the message that the history is broken.
In the attached file I first created the rectangle at the odd angle to snap the clipping plane to then I attach the mplane to the clipping plane now you can move rotate the clipping plane and your cplane/mplane will auto update. Also if you set the mplane option to universal you can get all standard ortho views to update as well. In the file turn gumball on and you can easily adjust the mplane and see the section update. You might have to use section command and or make sure project is on when you work at the section or use section tools in addition.
RM AutoSectionCPlane.3dm (258.3 KB)
I’ve been away from rhino so I forgot about the intersect command you can use the intersect command in the file I provided select the mock soul and then the group or the clipping plane and you get a section I forgot the intersect command works with clipping planes.