In a previous thread,
For a multi-segment spline, there is:
Contituity (intenal continuity?) = m (degree) - r (multiplicity)
In most splines without shrinked segments, the multiplicity of middle knots should be 2. Therefore it's easy to judge the internal continuities C1, C2, C3 ... with the equation above.
If a spline is divided at its middle knots, the continuity between the reulting B-curves is often like G1, G2, G3 ...
Is there any definite relationship between these two types of continuity Cx vs. Gx?
Thanks!
A 2-degree and 2-segment spline. Continuity at the middle knot: C1.
The spline is divided at the middle knot. Continuity between the resulting two B-curves: G1.