void CollisionWithTheFence(double nextX, double nextY, Fence fence)
{
// Отскок сбоку
if (this.Bottom() >= fence.Top()
&& (this.Right() > fence.Left() && this.Left() < fence.Right()
|| nextX + this.RealWidth() > fence.Left() && nextX < fence.Right()))
Velocity.X = -Velocity.X;
// Отскок сверху
double radius2 = Math.Pow(this.RealWidth() / 2.0, 2);
Vector center = new Vector(nextX + this.RealWidth() / 2.0, nextY + this.RealHeight() / 2.0);
if (center.DistanceTo(new Vector(fence.Left(), fence.Top())) <= radius2
|| center.DistanceTo(new Vector(fence.Right(), fence.Top())) <= radius2)
Velocity.Y = -Velocity.Y;
}