/// <summary>
/// Drag the object along the plane.
/// </summary>
public void Drag()
{
if (enabled && NGUITools.GetActive(gameObject) && mShouldMove)
{
if (mDragID == -10)
{
mDragID = UICamera.currentTouchID;
}
UICamera.currentTouch.clickNotification = UICamera.ClickNotification.BasedOnDelta;
// Prevents the drag "jump". Contributed by 'mixd' from the Tasharen forums.
if (smoothDragStart && !mDragStarted)
{
mDragStarted = true;
mDragStartOffset = UICamera.currentTouch.totalDelta;
}
Ray ray = smoothDragStart ?
UICamera.currentCamera.ScreenPointToRay(UICamera.currentTouch.pos - mDragStartOffset) :
UICamera.currentCamera.ScreenPointToRay(UICamera.currentTouch.pos);
float dist = 0f;
if (mPlane.Raycast(ray, out dist))
{
Vector3 currentPos = ray.GetPoint(dist);
Vector3 offset = currentPos - mLastPos;
mLastPos = currentPos;
Vector3 curScale = scale;
if (curScale.x > 0 && curScale.y > 0 && !m_bBeingJudge && (offset.x != 0 || offset.y != 0))
{
m_bHorizoning = Mathf.Abs(offset.x) > Mathf.Abs(offset.y);
m_bBeingJudge = true;
}
if (m_bBeingJudge)
{
if (m_bHorizoning)
{
curScale.x = scale.x;
curScale.y = 0;
vecOnDragonMode = OnDragonMode.LeftOrRight;
}
else
{
curScale.y = scale.y;
curScale.x = 0;
vecOnDragonMode = OnDragonMode.TopOrBottom;
}
}
//
if (m_bHorizoning)
{
if (offset.x < 0)
{
curDragonMode = DragonMode.Left;
}
else
{
curDragonMode = DragonMode.Right;
}
}
else
{
curDragonMode = DragonMode.None;
}
if (offset.x != 0f || offset.y != 0f)
{
offset = mTrans.InverseTransformDirection(offset);
offset.Scale(curScale);
offset = mTrans.TransformDirection(offset);
}
// Adjust the momentum
mMomentum = Vector3.Lerp(mMomentum, mMomentum + offset * (0.01f * momentumAmount), 0.67f);
// Move the panel
if (!iOSDragEmulation)
{
MoveAbsolute(offset);
}
else
{
Vector3 constraint = mPanel.CalculateConstrainOffset(bounds.min, bounds.max);
if (constraint.magnitude > 0.001f)
{
MoveAbsolute(offset * 0.5f);
mMomentum *= 0.5f;
}
else
{
MoveAbsolute(offset);
}
}
// We want to constrain the UI to be within bounds
if (restrictWithinPanel &&
mPanel.clipping != UIDrawCall.Clipping.None &&
dragEffect != DragEffect.MomentumAndSpring)
{
RestrictWithinBounds(true);
}
}
}
}
/// <summary>
/// Create a plane on which we will be performing the dragging.
/// </summary>
public void Press(bool pressed)
{
//Debug.Log("Press: " + pressed);
if (!pressed)
{
m_bBeingJudge = false;
}
m_bBeingJudge = false;
m_bHorizoning = false;
if (smoothDragStart && pressed)
{
mDragStarted = false;
mDragStartOffset = Vector2.zero;
}
if (enabled && NGUITools.GetActive(gameObject))
{
if (!pressed && mDragID == UICamera.currentTouchID)
{
mDragID = -10;
}
mCalculatedBounds = false;
mShouldMove = shouldMove;
if (!mShouldMove)
{
return;
}
mPressed = pressed;
if (pressed)
{
// Remove all momentum on press
mMomentum = Vector3.zero;
mScroll = 0f;
// Disable the spring movement
DisableSpring();
// Remember the hit position
mLastPos = UICamera.lastHit.point;
// Create the plane to drag along
mPlane = new Plane(mTrans.rotation * Vector3.back, mLastPos);
startDragonPos = UICamera.currentTouch.pos;
}
else
{
Vector2 pos = UICamera.currentTouch.pos - startDragonPos;
if (vecOnDragonMode == OnDragonMode.LeftOrRight)
{
if (pos.x >= 100)
{
curDragonMode = DragonMode.Right;
}
else if (pos.x <= -100)
{
curDragonMode = DragonMode.Left;
}
else
{
curDragonMode = DragonMode.None;
}
}
else
{
curDragonMode = DragonMode.None;
}
if (onDragFinished != null)
{
onDragFinished(curDragonMode);
}
if (restrictWithinPanel && mPanel.clipping != UIDrawCall.Clipping.None && dragEffect == DragEffect.MomentumAndSpring)
{
RestrictWithinBounds(false);
}
}
}
}
