easeInOutQuad static method

double easeInOutQuad(
  1. double t
)

Quadratic easing in/out.

Implementation

static double easeInOutQuad(double t) =>
    t < 0.5 ? 2.0 * t * t : 1.0 - math.pow(-2.0 * t + 2.0, 2) / 2.0;