BezierAnimation.prototype.qfunction = function(time){
	let qx = Math.pow(1 - time, 3) * this.p1[0] + 3 * time * Math.pow(1 - time, 2) * this.p2[0] + 3 * Math.pow(time, 2) * (1 - time) * this.p3[0] + Math.pow(time, 3) * this.p4[0];
	let qy = Math.pow(1 - time, 3) * this.p1[1] + 3 * time * Math.pow(1 - time, 2) * this.p2[1] + 3 * Math.pow(time, 2) * (1 - time) * this.p3[1] + Math.pow(time, 3) * this.p4[1];
	let qz = Math.pow(1 - time, 3) * this.p1[2] + 3 * time * Math.pow(1 - time, 2) * this.p2[2] + 3 * Math.pow(time, 2) * (1 - time) * this.p3[2] + Math.pow(time, 3) * this.p4[2];
	return vec3.fromValues(qx, qy, qz);