public void OnSceneGUI()
{
ChipmunkPivotJoint joint = target as ChipmunkPivotJoint;
if (joint != null && joint._handle == IntPtr.Zero)
{
SetupUndo("edited ChipmunkPivotJoint");
Transform t = joint.transform;
Vector3 pivot = t.TransformPoint(joint.pivot);
Vector2 pivotDelta = DotHandle(pivot) - (Vector2)pivot;
if (pivotDelta != Vector2.zero)
{
joint.pivot = t.InverseTransformPoint((Vector2)pivot + pivotDelta);
EditorUtility.SetDirty(target);
}
}
}
protected void Update()
{
// Works for the mouse or a single touch. If doing multitouch, replace with with a loop over Input.touches
// and adapt accordingly
if (Input.GetMouseButtonDown(0))
{
//Debug.Log ("mouse: "+ Input.mousePosition + " position: " + GetPosition(Input.mousePosition));
ChipmunkNearestPointQueryInfo info;
Chipmunk.NearestPointQueryNearest(mouseBody.position, fingerThickness, out info);
//Debug.Log ("Grabbed shape: " + info.shape);
if (info.shape != null)
{
if (info.shape.body == null)
{
// We clicked on a static shape. You can't drag those!
return;
}
grabbedShape = info.shape;
mouseConstraint = mouseBody.gameObject.AddComponent(typeof(ChipmunkPivotJoint)) as ChipmunkPivotJoint;
mouseConstraint.bodyB = grabbedShape.body;
mouseConstraint.pivot = Vector2.zero;
// high but not infinite. You can push heavy things, but not force yourself through things.
mouseConstraint.maxForce = 1e3f;
// 60f = the approximate intended frame rate
mouseConstraint.errorBias = Mathf.Pow(1.0f - 0.15f, 60f);
}
}
if (Input.GetMouseButtonUp(0))
{
// remove mouse constraint.
Destroy(mouseConstraint);
}
}
