derivativeAt abstract method

Vector2 derivativeAt(
  1. double t, {
  2. List<Vector2>? cachedFirstOrderDerivativePoints,
})

Returns the tangent vector at parameter t.

The return value is not normalized. The optional parameter cachedFirstOrderDerivativePoints allows the method to use previously calculated values for firstOrderDerivativePoints instead of repeating the calculations.

Implementation

Vector2 derivativeAt(double t,
    {List<Vector2>? cachedFirstOrderDerivativePoints});