Cubic constructor
Creates a cubic curve.
Rather than creating a new instance, consider using one of the common cubic curves in Curves.
The a
, b
, c
, and d
arguments must not be null.
Implementation
const Cubic(this.a, this.b, this.c, this.d)
: assert(a != null),
assert(b != null),
assert(c != null),
assert(d != null);