// Finishes initializing the passed PbChild, and adds to children array
protected void InitializeAndAddChild(
PbChild child,
BrushDescriptor desc, Color color, float relativeSize = 1)
{
Debug.Assert(child.m_brush == null);
TrTransform childXf = child.CalculateChildXfFixedScale(m_knots);
BaseBrushScript brush = Create(
transform.parent, childXf, desc, color, m_BaseSize_PS * relativeSize);
ParentBrush pb = brush as ParentBrush;
string originalName = brush.gameObject.name;
string newName;
if (pb != null)
{
newName = string.Format("{0}.{1}", gameObject.name, m_children.Count);
}
else
{
newName = string.Format(
"{0}.{1} (Leaf {2})", gameObject.name, m_children.Count, originalName);
}
brush.gameObject.name = newName;
if (pb != null)
{
pb.m_recursionLevel = m_recursionLevel + 1;
}
child.m_brush = brush;
m_children.Add(child);
}
//
// BaseBrushScript api
//
protected override bool UpdatePositionImpl(
Vector3 translation, Quaternion rotation, float pressure)
{
TrTransform parentXf = TrTransform.TR(translation, rotation);
// Update m_knots
{
Debug.Assert(m_knots.Count > 1, "There should always be at least 2 knots");
PbKnot cur = m_knots[m_knots.Count - 1];
PbKnot prev = m_knots[m_knots.Count - 2];
Vector3 move = parentXf.translation - prev.m_pointer.translation;
cur.m_pointer = parentXf;
float moveLen = move.magnitude;
cur.m_tangentFrame = (moveLen > 1e-5f)
? MathUtils.ComputeMinimalRotationFrame(
move / moveLen, prev.m_tangentFrame, cur.m_pointer.rotation)
: prev.m_tangentFrame;
cur.m_distance = prev.m_distance + moveLen;
cur.m_pressuredSize = PressuredSize(pressure);
}
MaybeCreateChildren();
bool createdControlPoint = false;
for (int i = 0; i < m_children.Count; ++i)
{
PbChild child = m_children[i];
var childXf = child.CalculateChildXfFixedScale(m_knots);
if (child.m_brush.UpdatePosition_LS(childXf, pressure))
{
// Need to save off any control point which is applicable to any of our children.
// This does mean that if we have a giant tree of children, we might be saving
// off every control point.
// TODO: maybe there's a way for the parent to impose some order on this;
// like it doesn't always send positions to its children? But that would make
// interactive drawing less pretty.
createdControlPoint = true;
}
}
if (createdControlPoint)
{
m_knots.Add(m_knots[m_knots.Count - 1].Clone());
}
return(createdControlPoint);
}
