const aObjectIndex : Integer;
const aX, aY, aZ : Single) : Integer;
Add a unique Normal to the Normal array of the supplied dynamic object
aObjectIndex - A Reference to one of the previously created dynamic objects
aX, aY, aZ - the Normal data to add
The index of the Normal.
This adds a unique Normal to the supplied dynamic object. Generally this will be used to load Normal data from an external file not known by the engine. Duplicate checking is performed, and if a duplicate is found, the index of the first occurance is returned. This function is used to save system memory.