Tangents vs Normals vs Binormals?
I understand why i need Normals. But i dont understand why do i need Tangents and Binormals? And how they related to Normals...
Why Normals are all Symmetric and every Surface has own Normal, but there are only 2 Tangents and they are not Symmetric, but surfaces are still totally Symmetric... i dont understand why i need tangents, and also binormals.
asked May 30 '14 at 07:41 PM in Rendering
Oh, after looking at Ball's tangents/normals/binormals i become understand, that Tangents is something like X direction for texture UVs, and Binormals is Y direction for texture UVs.
Ball have for some vertexes 2 tangents/2 binormals because its actually not 1 vertex, its a 2 vertexes which connecting different UV parts, this 2 vertexes seems 1 Normal, but actually there are 2 Normals as well.
I hope i did understand well.
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