April 28th, 2009, 03:55 AM
Simple question about normalising...
When you normalise a 3d vertex/vector you make sure it is within the range of 0-1 (or -1)...
Is this basically to turn it from a position in 3d space to a direction? im trying to understand alot more about 3d maths and things, its easy enough to copy code and vaugley understand what its doing and why its doing it... but i wanted to try to make sure my understanding was correct...
April 28th, 2009, 07:49 AM
Re: Simple question about normalising...
You have the basic idea.
Though I don't usually see uses for length of -1, just 1.
With a length of one, certain operations for which a normal is used ( dot products for example ) make more sense for their context, as in 1 * 1 = 1.
That's not a deep explanation as to why it's done, just an intuitive point.
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