protected virtual void HandleRotation()
{
// Acceleration affects rotation.
// float aAcceleration = acceleration.X / (10.0f * Mass);
// exAngSpeed.Value += aAcceleration;
// Angular friction:
if (friction)
{
float aFriction = mew * -1.0f * exAngSpeed.Value;
exAngSpeed.Value += aFriction;
}
if (exAngSpeed.CloseToZero(exAngSpeed.Value))
{
exAngSpeed.Value = 0.0f;
}
aVelocity = exAngSpeed.Value;
exAngSpeed.Value = exAngSpeed.Clamp(exAngSpeed.Value);
aVelocity = exAngSpeed.Clamp(aVelocity);
rotation += aVelocity * delta;
rotation = MathHelper.WrapAngle(rotation);
}
// Clamp the velocity.
private void ClampVelocity()
{
if (IsEmpty(velocity))
{
this.velocity = new Vector2(0f, 0f); return;
}
// Clamp the vector.
float mag = exSpeed.Clamp(velocity.Length()); // Auto-clamps value.
if (exSpeed.CloseToZero(mag))
{
velocity = new Vector2(0, 0);
}
else
{
velocity.Normalize();
velocity *= mag;
}
}
// Clamp the acceleration.
private void ClampAcceleration()
{
if (IsEmpty(acceleration))
{
this.acceleration = new Vector2(0f, 0f); return;
}
// Clamp the vector.
float mag = exAcc.Clamp(acceleration.Length()); // Auto-clamps value.
accelerationTrack = Vector2.Multiply(Vector2.Normalize(acceleration), mag);
if (exAcc.CloseToZero(mag))
{
acceleration = new Vector2(0, 0);
}
else
{
acceleration.Normalize();
acceleration *= mag;
}
}