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 OnDrawGizmos()
{
int count = this.mRealPath.Count;
if (count < 3)
{
return;
}
float time = 1.0f;
float t = 0;
int i = 0;
Gizmos.color = Color.white;
while (i <= mRealPath.Count)
{
Vector3 p0 = mRealPath[(i + 0) % count];
Vector3 p1 = mRealPath[(i + 1) % count];
Vector3 p2 = mRealPath[(i + 2) % count];
t += (Time.deltaTime / time);
if (t > 1.0f)
{
t = 0.0f;
i += 2;
}
Vector3 pos = XMath.SampleBezierCurve(p0, p1, p2, t);
Vector3 dir = (p1 + (p2 - p1) * t) - (p0 + (p1 - p0) * t);
dir = dir.normalized * 0.5f;
Gizmos.DrawLine(pos - dir, pos + dir);
Gizmos.DrawSphere(p1, 0.1f);
Gizmos.DrawLine(p0, p1);
Gizmos.DrawLine(p1, p2);
}
}
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;
}
}
public static bool FloatEqual(Vector3 a, Vector3 b)
{
return(XMath.FloatEqual(a.x, b.x) &&
XMath.FloatEqual(a.y, b.y) &&
XMath.FloatEqual(a.z, b.z));
}
/// <summary>
/// intersetion-test between sphere and line-segment
/// </summary>
/// <param name="center">sphere center</param>
/// <param name="radius">sphere radius</param>
/// <param name="p1">line-segment p1</param>
/// <param name="p2">line-segment p2</param>
/// <returns></returns>
public static bool Intersect(Vector3 center, float radius, Vector3 p1, Vector3 p2)
{
Vector3 point = XMath.NearestPointOnLineSeg(center, p1, p2);
return((center - point).sqrMagnitude <= radius * radius);
}
public static bool FloatEqual(Vector2 a, Vector2 b)
{
return(XMath.FloatEqual(a.x, b.x) &&
XMath.FloatEqual(a.y, b.y));
}
bool Approximately(Vector3 a, Vector3 b)
{
return(XMath.FloatEqual(a.x, b.x) &&
XMath.FloatEqual(a.y, b.y) &&
XMath.FloatEqual(a.z, b.z));
}
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);
}
}