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The Pentium Guy

Given a Vector3, how can I find the perpendicular Vector3

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Given a Vector3, how can I find the perpendicular Vector3 on the XZ plane. For example, if you have a vector goign forward (0,0,1), the perpendicular vector on the XZ plane would be the one going right (1,0,0) or left (-1,0,0). Just wondering - how would I find this? Thanks, -TPG

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cross-product

R.x = U.y * F.z - F.y * U.z
R.y = U.z * F.x - F.z * U.x
R.z = U.x * F.y - F.x * U.y

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