public static bool IsInside(XY x, XY y, XY z, XY p)
{
Vector2f v1 = new Vector2f(y.GetX() - x.GetX(), y.GetY() - x.GetY());
Vector2f v2 = new Vector2f(z.GetX() - x.GetX(), z.GetY() - x.GetY());
float det = v1.x * v2.y - v2.x * v1.y;
Vector2f tmp = new Vector2f(p.GetX() - x.GetX(), p.GetY() - x.GetY());
float lambda = (tmp.x * v2.y - v2.x * tmp.y) / det;
float mue = (v1.x * tmp.y - tmp.x * v1.y) / det;
return(lambda > 0 && mue > 0 && (lambda + mue) < 1);
}
public float Side(XY v)
{
if (v == null)
{
return(0f);
}
return(Side(v.GetX(), v.GetY()));
}
public bool Contains(XY xy)
{
if (xy == null)
{
return(false);
}
return(Contains(xy.GetX(), xy.GetY()));
}
public AABB SetPosition(XY pos)
{
if (pos == null)
{
return(this);
}
SetPosition(pos.GetX(), pos.GetY());
return(this);
}
public float DistanceTo(XY tarGet, bool round)
{
if (tarGet == null)
{
return(0f);
}
float dx = this.x - tarGet.GetX();
float dy = this.y - tarGet.GetY();
if (round)
{
return(MathUtils.Round(MathUtils.Sqrt(dx * dx + dy * dy)));
}
else
{
return(MathUtils.Sqrt(dx * dx + dy * dy));
}
}
public AABB SetCenter(XY pos)
{
SetPosition(pos.GetX() - GetWidth() / 2, pos.GetY() - GetHeight() / 2);
return(this);
}
public Line(XY p1, XY p2) : this(p1.GetX(), p1.GetY(), p2.GetX(), p2.GetY())
{
}
public static Vector2f At(XY xy)
{
return(new Vector2f(xy.GetX(), xy.GetY()));
}
public Vector2f Set(XY v)
{
this.x = v.GetX();
this.y = v.GetY();
return(this);
}