/// <summary>
/// This function applies a "friction" in a direction orthogonal to the body's axis.
/// </summary>
void killOrthogonalVelocity(Body targetBody)
{
Vector2 velocity = targetBody.GetLinearVelocity();
float theta = targetBody.Rotation - (float)Math.PI / 2;
Vector2 sidewaysAxis = new Vector2((float)Math.Cos(theta), (float)Math.Sin(theta));
targetBody.SetLinearVelocity(sidewaysAxis * Vector2.Dot(sidewaysAxis, velocity));
}
