Method angleCos

src/main/java/field/linalg/Vec3.java:1191–1196

Return the cosine of the angle between this vector and the supplied vector. Use this instead of Math.cos(angle(v)) . @param v the other vector @return the cosine of the angle @see #angle(Vec3)

(Vec3 v)

	 * @see #angle(Vec3)
	 */
	public double angleCos(Vec3 v) {
		double length1 = Math.sqrt(x * x + y * y + z * z);
		double length2 = Math.sqrt(v.x * v.x + v.y * v.y + v.z * v.z);
		double dot = x * v.x + y * v.y + z * v.z;
		return dot / (length1 * length2);
	}

	/**
	 * Return the angle between this vector and the supplied vector.