import type { AnimationCurve } from './types';

export class EaseInQuad implements AnimationCurve {
	curve(x: number): number {
		return x * x;
	}
}

export class EaseOutQuad implements AnimationCurve {
	curve(x: number): number {
		return x * (2 - x);
	}
}

export class EaseInOutQuad implements AnimationCurve {
	curve(x: number): number {
		return x < 0.5 ? 2 * x * x : -1 + (4 - 2 * x) * x;
	}
}

export class EaseLinear implements AnimationCurve {
	curve(x: number): number {
		return x;
	}
}