So I know you can get the 'normal' of a Distance field, but is there anyway to get the 'tangent'? ( aka the direction that the field increases the *least* in ? )
There are infinitely many (bi)tangent vectors. A common trick is to take the cross product of the normal with a fixed “up” vector, then run the result, the up vector, and the normal through Gram-Schmidt to get a basis. Has some edge cases, though.
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Yes! This is what I’m implementing now ! Thanks for the knowledge :)
Thanks. Twitter will use this to make your timeline better. UndoUndo
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To put this more concretely: Every vector perpendicular to the normal is a direction the field doesn't increase or decrease in (to first order).
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Ya I guess I need 2nd order then prolly right?
End of conversation
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