A common tangent exists, if the center points and the common point are collinear.
Clearly, at librecad, we may not understand how blender workers.
The tangent for arcs are just the perpendicular line of the line passing the point and the arc center.
Godri83 wrote
Hello everyone,
I'm currently working on a Python script for Blender that needs to handle the mathematical relationship between two joined arcs. More specifically, I need to understand and implement the formula that governs their behavior when their joining point is moved.
What I know:
Circles are joined at their ends
There is a relationship R1/R2 = κ2/κ1 (where R = radius and κ = curvature).
A common tangent must exist at the junction point
What I'm looking for:
The exact mathematical formula to implement in Python
Suggestions on how best to implement this relationship in Blender via Python
Examples of similar code, if possible
My goal is to create a custom modifier in Blender that automatically maintains this geometric relationship.
Thanks in advance for your help!
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