Function smoothStep

src/shader-utils.ts:15–18

(a: number, b: number, t: number)

}

function smoothStep(a: number, b: number, t: number): number {
  t = Math.max(0, Math.min(1, (t - a) / (b - a)))
  return t * t * (3 - 2 * t)
}

function length(x: number, y: number): number {
  return Math.sqrt(x * x + y * y)