public static UnityEngine.Vector3 AroundAxis(this IRandom rng, Vector3 axis)
{
var a = rng.Angle();
if (VectorUtil.NearSameAxis(axis, Vector3.forward))
{
return(Quaternion.AngleAxis(a, axis) * VectorUtil.GetForwardTangent(Vector3.up, axis));
}
else
{
return(Quaternion.AngleAxis(a, axis) * VectorUtil.GetForwardTangent(Vector3.forward, axis));
}
}
public static void DrawArrow(Vector3 start, Vector3 end, float headSize, int detail = 4)
{
Gizmos.DrawLine(start, end);
var n = Vector3.Normalize(start - end) * headSize;
var da = 360f / (float)detail;
for (int i = 0; i < detail; i++)
{
var v = (VectorUtil.NearSameAxis(n, Vector3.up)) ? Vector3.Cross(n, Vector3.up) : Vector3.Cross(n, Vector3.right);
var q = Quaternion.AngleAxis(da * i, n) * Quaternion.FromToRotation(n, n + v * 0.25f);
Gizmos.DrawLine(end, end + q * n);
}
}
