/// <summary>
/// This requires a world target point,
/// tuning parameters, and the time step.
/// </summary>
/// <param name="body">The body.</param>
/// <param name="anchor">The target.</param>
public FixedMouseJoint(Body body, Vector2 anchor)
: base(body)
{
JointType = JointType.FixedMouse;
Frequency = 5.0f;
DampingRatio = 0.7f;
MaxForce = 1000 * body.Mass;
Debug.Assert(anchor.IsValid());
_target = anchor;
LocalAnchorA = MathUtils.MulT(BodyA._xf, anchor);
}
/// <summary>
/// This requires a world target point,
/// tuning parameters, and the time step.
/// </summary>
/// <param name="body">The body.</param>
/// <param name="worldAnchor">The target.</param>
public FixedMouseJoint(Body body, Vector2 worldAnchor)
: base(body)
{
JointType = JointType.FixedMouse;
Frequency = 5.0f;
DampingRatio = 0.7f;
Debug.Assert(worldAnchor.IsValid());
Transform xf1;
BodyA.GetTransform(out xf1);
_worldAnchor = worldAnchor;
LocalAnchorA = BodyA.GetLocalPoint(worldAnchor);
}
private Mat22 _mass; // effective mass for point-to-point constraint.
#endregion Fields
#region Constructors
/// <summary>
/// This requires a world target point,
/// tuning parameters, and the time step.
/// </summary>
/// <param name="body">The body.</param>
/// <param name="target">The target.</param>
public FixedMouseJoint(Body body, Vector2 target)
: base(body)
{
JointType = JointType.FixedMouse;
Frequency = 5.0f;
DampingRatio = 0.7f;
Debug.Assert(target.IsValid());
Transform xf1;
BodyA.GetTransform(out xf1);
LocalAnchorB = target;
LocalAnchorA = MathUtils.MultiplyT(ref xf1, LocalAnchorB);
}
/// <summary>
/// This requires a world target point,
/// tuning parameters, and the time step.
/// </summary>
/// <param name="body">The body.</param>
/// <param name="worldAnchor">The target.</param>
public FixedMouseJoint(Body body, Vector2 worldAnchor)
: base(body)
{
JointType = JointType.FixedMouse;
Frequency = 5.0f;
DampingRatio = 0.7f;
MaxForce = 1000 * body.Mass;
#if PSS
//TODO
#else
Debug.Assert(worldAnchor.IsValid());
#endif
_targetA = worldAnchor;
LocalAnchorB = MathUtils.MulT(BodyA.Xf, worldAnchor);
}
