Hello, I am implementing XML3D <http://www.xml3d.org/> format into WebKit. I have a number of new elements that I have added to a separate namespace. Root element is <xml3d> and it's the only one who has a renderer. Every child that is attached to the subtree of this element should notify parent element about itself and register themselves with this renderer. I need to have a function that I can override to perform this initialization. My implementation uses third party library for rendering and requires me to have a single renderer to render the whole scene, therefore I can't split renderer into many subrenderers for each node. Moreover, 3D scenes do not follow box model and rendering of single node often requires to interact with other elements in the scene (e.g. for ray tracing) thus storing the entire scene in the single data-structure is more effective.
To perform the registration with the parent renderer I have tried using insertedIntoDocument/removedFromDocument, but they result in overhead when I am attaching element to a tree which is not rendered at all (such as loaded by Ajax). Then I switched to attach/detach but these are called many times, i.e. every node gets attached, detached, attached again etc. while loading the document, which still causes the overhead. Is there any set of functions that would allow me to know when I am attached to the subtree and that tree should be rendered? Thank you in advance, Sergiy
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