void Transform2D::ValidateCleanliness()
{
Transform2D* lastDirty = nullptr;
Transform2D* curNode = this;
while (curNode)
{
if (curNode->GetIsDirty())
lastDirty = curNode;
curNode = curNode->m_node.GetParent();
}
if (lastDirty)
{
ValidateTransforms(lastDirty);
}
}
STATIC void Transform2D::ValidateTransforms(Transform2D* root)
{
Transform2D* curTransform = root;
while (curTransform != NULL)
{
Hierarchy<Transform2D>& curNode = curTransform->m_node;
// If this transform is dirty, then update the rest of it's hierarchy
if (curTransform->GetIsDirty())
{
// We've got dirt on this transform; we know it's number... Update the transforms on downwards
curTransform->UpdateHierarchy();
// Traverse upward to continue our traversal
while (nullptr != curTransform)
{
Hierarchy<Transform2D>& upwardNode = curTransform->m_node;
// Check if there's a sibling of this node
if (nullptr != upwardNode.GetSibling())
{
curTransform = upwardNode.GetSibling();
break;
}
else
{
// If this is the root node, then it's time to leave
if (root == curTransform)
{
curTransform = nullptr;
break;
}
curTransform = upwardNode.GetParent();
}
}
}
else
{
curTransform = curNode.Next();
}
}
}