private void StartSingleDrag(BonsaiInputEvent startEvent)
{
BonsaiNode node = startEvent.node;
Vector2 offset = EditorSingleDrag.StartDrag(node, startEvent.canvasMousePostion);
MotionAction = (CanvasTransform t) => EditorSingleDrag.Drag(node, BonsaiInput.MousePosition(t), offset);
}
/// <summary>
/// Formats the tree to look nicely.
/// </summary>
public static void PositionNodesNicely(BonsaiNode root, Vector2 anchor)
{
// Sort parent-child connections so formatter uses latest changes.
foreach (BonsaiNode node in TreeTraversal.PreOrder(root))
{
node.SortChildren();
}
var positioning = new FormatPositioning();
foreach (BonsaiNode node in TreeTraversal.PostOrder(root))
{
PositionHorizontal(node, positioning);
}
foreach (BonsaiNode node in TreeTraversal.PreOrder(root))
{
PositionVertical(node);
}
// Move the entire subtree to the anchor.
Vector2 offset = EditorSingleDrag.StartDrag(root, root.Center);
EditorSingleDrag.SetSubtreePosition(root, anchor, offset);
}