Description: This sample illustrates how to extend the Vega Scenegraph by deriving a custom node, and how to extend the vsb loader infrastructure be able to read and write the newly derived node type. Additionally the sample demonstrates how to encrypt a scenegraph binary file by providing a validation request during the reading of the derived node type. In this specific example the validation step requires the user to enter a valid credit card number. Any credit card number that passes the standard credit card mod 10 checksum will do (eg 6011000000000001). Note that the validation step can be as elaborate as the user deems necessary.
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