Force length of a spline to be equal to x?

[Grace]

Yes, we’ve been trying to figure a practical, mathematical and geometrical way that one could program this. You may check these threads:

Curve tool with a fixed length

Hello, It would be nice to have a “Simple curve” tool with one fixed point and a fixed length to create a seam with two pieces of the same length. Perhaps the tool need a line or axis for the calculation of the sencond point.

New feature Curve tool Overlay - "French" curve

I have created this topic for people to gather thoughts and input on what should be included in a new software tool like the one mentioned in recent discussion on other threads. I will post links to those other discussions here. The “french curve” tool or specific tools used in specific patternmaking systems could be provided as an overlay on the screen so that a user could draw a new pattern against the reference. I see this as an automated way to “lay the tool against the screen”. I invite…

I’m not a programmer at all, so perhaps we can put our heads together and one of the programmers will get some inspiration and come up with a tool?