void UpdatePosition()
{
if (!this.mNeedUpdate)
{
return;
}
if (this.mPressTouch == null && !this.Approximately(this.mLastDelta, Vector3.zero))
{
this.mLastDelta *= this.inertia;
this.mLastDelta = this.AdjustDeltaInRange(this.mLastDelta);
this.mDestination += this.mLastDelta;
}
Vector3 force = XMath.Elastic(this.mDestination, this.itemRoot.localPosition, this.dragForce, 0, 0);
if (Mathf.Approximately(force.sqrMagnitude, 0))
{
this.mNeedUpdate = false;
}
this.AddForce(force);
}
void LayoutItems(bool kinematic)
{
if (!this.mNeedLayout)
{
return;
}
bool completed = true;
Vector3 pos = Vector3.zero;
this.mHead.transform.localPosition = pos;
for (int i = 0; i < this.mItems.Count; i++)
{
var cur = this.mItems[i];
var curpos = cur.localPosition;
pos += this.mDirection * cur.radius;
if (kinematic)
{
cur.transform.localPosition = pos;
}
else if (!this.Approximately(curpos, pos))
{
completed = false;
Vector3 force = XMath.Elastic(pos, curpos, this.resilence, 0, 0);
this.AddForce(cur, force);
}
pos += this.mDirection * cur.radius;
}
this.mTail.transform.localPosition = pos;
if (completed)
{
this.mNeedLayout = false;
}
}
void AdjustPositionInRange()
{
if (this.mItems.Count == 0)
{
return;
}
Vector3 head = this.transform.InverseTransformPoint(this.mHead.position);
Vector3 tail = this.transform.InverseTransformPoint(this.mTail.position);
Vector3 min = this.transform.InverseTransformPoint(this.min.position);
Vector3 max = this.transform.InverseTransformPoint(this.max.position);
if (this.mHead == this.mTail)
{
this.mNeedUpdate = false;
Vector3 force = XMath.Elastic(min, head, this.resilence, 0, 0);
this.AddForce(force);
return;
}
Vector3 min_head = head - min;
Vector3 max_tail = tail - max;
bool head_force = min_head.sqrMagnitude > 0.01f && Vector3.Angle(min_head, this.mDirection) <= 90;
bool tail_force = max_tail.sqrMagnitude > 0.01f && Vector3.Angle(max_tail, this.mDirection) > 90;
if (!head_force && !tail_force)
{
return;
}
this.mNeedUpdate = false;
if (head_force != tail_force)
{
Vector3 min_max = max - min;
Vector3 head_tail = tail - head;
if (head_tail.sqrMagnitude > min_max.sqrMagnitude)
{
if (head_force)
{
Vector3 force = XMath.Elastic(min, head, this.resilence, 0, 0);
this.AddForce(force);
}
else if (tail_force)
{
Vector3 force = XMath.Elastic(max, tail, this.resilence, 0, 0);
this.AddForce(force);
}
}
else
{
if (head_force)
{
Vector3 force = XMath.Elastic(min, head, this.resilence, 0, 0);
this.AddForce(force);
}
}
}
else
{
Vector3 force = XMath.Elastic(min, head, this.resilence, 0, 0);
this.AddForce(force);
}
}