order

order: number

order of polynomial

• The order is the number of basis functions that are in effect at any knot value.
• The order is the number of points that affect the curve at any knot value, i.e. the size of the "local support" set
• order=2 is lines (degree 1)
• order=3 is quadratic (degree 2)
• order=4 is cubic (degree 3)
• The number of knots follows the convention "poles+order= knots".
• In this convention (for example), a clamped cubic with knots [0,0,0,0, 1,2,3,4,4,4,4] has:
• • 4 (order) copies of the start and end knot (0 and 4) and
• • 3 interior knots
• Hence expect 7 poles.

Defined in

• serialization/IModelJsonSchema.ts Line 376