OpenGLContext.vectorutilities

Given 3 points, determine if they are colinear

Uses the definition which says that points are collinear iff the distance from the line for point c to line a-b is non-0 (that is, point c does not lie on a-b).

returns None or the first

Compute element-wise cross-product of two arrays of vectors.

set1, set2 -- sequence objects with 1 or more 3-item vector values. If both sets are longer than 1 vector, they must be the same length.

returns a double array with x elements, where x is the number of 3-element vectors in the longer set

Cross-product of 3D vectors stored in 4D arrays

Identical to crossProduct otherwise.

Calculate the magnitudes of the given vectors

returns a float array with x elements, where x is the number of 3-element vectors

Get normalised versions of the vectors.

returns a float array with x 3-element vectors, where x is the number of 3-element vectors in "vectors"

Will raise ZeroDivisionError if there are 0-magnitude vectors in the set.

Calculate axis/angle rotation transforming vec a -> vec b