/// <summary> /// Distance from the vector to another. /// </summary> /// <param name="b">The other vector.</param> /// <returns></returns> public float dist(V2 b) => (this - b).len;
/// <summary>
/// Makes a new 3D vector from a 2D vector.
/// </summary>
/// <param name="xy">XY components.</param>
/// <param name="z">Z component.</param>
public V3(V2 xy, float z)
{
this.x = xy.x;
this.y = xy.y;
this.z = z;
}
/// <summary> /// Gets the dot product of two 2D vectors. /// </summary> /// <param name="a">First vector.</param> /// <param name="b">Second vector.</param> /// <returns></returns> public static float dot(V2 a, V2 b) => (a * b).sum;
/// <summary> /// Gets the distance between two 2D vectors. /// </summary> /// <param name="a">First vector.</param> /// <param name="b">Second vector.</param> /// <returns></returns> public static float dist(V2 a, V2 b) => (b - a).len;
/// <summary> /// Gets the angle between two 2D vectors. /// </summary> /// <param name="a">First vector.</param> /// <param name="b">Second vector.</param> /// <returns></returns> public static float angle(V2 a, V2 b) => ((a.unit * b.unit).sum + 1f) / PI2F;
