Re: [Maya-Python] quick way of finding perpendicular vector?

[Marcus Ottosson]

As mentioned in my previous reply, crossproduct() should sort things out.

Best,

Marcus

On 29 October 2014 12:30, sam williams <samwill...@gmail.com> wrote:

Hello;)

im trying to find the perpendicular vector to a vector. I know i need to use the cross product, but it can be tedious to write is all out manually. But does anyone know of an in built way of finding it in python. other than using numpy. 

thanks alot, 

Sam

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Marcus Ottosson
konstr...@gmail.com

[Risto Jankkila]

Hi,

You need two vectors for cross product. If you want you can find a random tangent for a single vector, but that's slightly more complicated.

For cross-product you can use the mel-command 'cross' or the MVector-class from Python API that has overloaded operator for cross product (the caret-symbol).

Example code for api:

import maya.api.OpenMaya as api

p1 = [0, 1, 0]

p2 = [1, 0, 0]

vec_p1 = api.MVector(p1)

vec_p2 = api.MVector(p2)

cross = vec_p1^vec_p2

Hope that helps.

Cheers,

Risto