Circles and Continuity

Rhino Rhino for Mac
1

I was checking the continuity of curves involving circles and lines and found to my shock that places that I expected would get G1 were Go.

In the attached example, I:

  1. drew a perpendicular cross.
  2. drew a circle at the line intersections.
  3. drew a line (green) where the circle intersects the purple line.
  4. split the circle on the purple line.
    Yet the green line and semicircle are G0 when I would expect them to be G1.

How can I ensure such curves are continuous?

Screen Shot 2020-11-01 at 5.46.12 PM
Screen Shot 2020-11-01 at 5.46.12 PM1304×766 159 KB
Problem Circle.3dm (2.8 MB)

2

Well the problem seems to be that the circle isn’t actually centered where the lines cross, it’s 1/4" too low. Can’t say what might have caused that, just make sure the “int” snap is the only one active when picking that center point.

3

Thanks, restarted Rhino, tried again and it worked. For some reason every circle in the original file was 1/4" from the intersection of the center.

It looks like one file was doing something funky. I copied every thing to a new file and have not seen the same.