public static Vector3 ApplyFriction(this Vector3 v, Vector3 f) {
Vector3 m = v.Abs();
m.x = v.x.Sign() * Mathf.Max(m.x-f.x, 0);
m.y = v.y.Sign() * Mathf.Max(m.y-f.y, 0);
m.z = v.z.Sign() * Mathf.Max(m.z-f.z, 0);
return m;
}
public static Complex Sign(this Complex c)
{
if (c == 0) {
return 1;
} else {
return c / c.Abs();
}
}
/// <summary>
/// Clamp the point to the rect.
/// </summary>
/// <param name="extends">Extends.</param>
/// <param name="point">Point.</param>
public static Vector2 Clamp(this Rect extends, Vector2 point)
{
extends = extends.Abs();
float x = HydraMathUtils.Clamp(point.x, extends.xMin, extends.xMax);
float y = HydraMathUtils.Clamp(point.y, extends.yMin, extends.yMax);
return new Vector2(x, y);
}
public static Vector3 MaxClamp(this Vector3 vector)
{
var absVec = vector.Abs();
if (absVec.x >= absVec.y && absVec.x >= absVec.z)
return new Vector3(Math.Sign(vector.x), 0, 0);
if (absVec.y >= absVec.x && absVec.y >= absVec.z)
return new Vector3(0, Math.Sign(vector.y), 0);
if (absVec.z >= absVec.x && absVec.z >= absVec.y)
return new Vector3(0, 0, Math.Sign(vector.z));
return Vector3.zero;
}
public static bool AbsMoreThan(this long f1, long f2)
{
return f1.Abs () > f2;
}
