Method getNormal

packages/clay/src/utils/vector.ts:14–23

(points: number[][])

  }

  static getNormal(points: number[][]) {
    const a = Vector.subtract(points[0], points[1]);
    const b = Vector.subtract(points[1], points[2]);

    const [x, y, z] = this.multiply(a, b);

    const magnitude = Math.sqrt(x * x + y * y + z * z);

    return [x / magnitude, y / magnitude, z / magnitude];
  }

  static dot(v1: number[], v2: number[]) {
    return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];