private bool BeginDragSplinePoint()
{
Vector3 position;
if (GetPositionOnDragPlane(ScreenPointToRay(MousePosition), out position))
{
Vector3 offset = position - m_dragSpline.GetPointPosition(m_dragPointIndex);
const float s = 0.1f;
if (offset.magnitude > HandleSize(m_beginDragPosition) * s)
{
JunctionBase junction = m_dragSpline.GetJunction(m_dragPointIndex);
if (m_dragPointIndex == 0 && junction == null)
{
m_dragSpline.Prepend(position);
GameObject splinePoint = m_dragSpline.GetPoint(0);
RegisterCreatedObjectUndo(splinePoint, "BH.S3.Prepend");
SetTransformParentUndo(splinePoint.transform, splinePoint.transform.parent, "BH.S3.Prepend");
}
else if (m_dragPointIndex == m_dragSpline.PointsCount - 1 && junction == null)
{
m_dragSpline.Append(position);
m_dragPointIndex = m_dragSpline.PointsCount - 1;
RegisterCreatedObjectUndo(m_dragSpline.GetPoint(m_dragPointIndex), "BH.S3.Append");
}
else
{
Vector3 dir;
if (m_dragSpline.CurveCount == m_dragPointIndex)
{
dir = m_dragSpline.GetDirection(1.0f);
}
else
{
dir = m_dragSpline.GetDirection(0, m_dragPointIndex);
}
bool isOut = Mathf.Sign(Vector3.Dot(offset.normalized, dir)) >= 0;
int connectionIndex = m_dragSpline.CreateBranch(m_dragPointIndex, isOut);
junction = m_dragSpline.GetJunction(m_dragPointIndex);
m_dragSpline = junction.GetSpline(connectionIndex);
RegisterCreatedObjectUndo(m_dragSpline.gameObject, "BH.S3.Branch");
if (junction.ConnectionsCount == 2)
{
m_newJunction = junction;
RegisterCreatedObjectUndo(junction.gameObject, "BH.S3.Branch");
}
m_splines = m_splines.Add(m_dragSpline);
SplineRenderer splineRenderer = m_dragSpline.GetComponent <SplineRenderer>();
m_splineRenderers = m_splineRenderers.Add(splineRenderer);
if (splineRenderer != null)
{
splineRenderer.IsSelected = true;
}
m_dragPointIndex = isOut ? 1 : 0;
}
return(true);
}
}
return(false);
}