rotaxis expression function

Returns a 4×4 rotation matrix from an angle and a vector.

See also: rotate, scale, translate

angle is in degrees.

The rotation is taken from the angle around the axis specified by the vector axisv. The vector is converted to a 3 vector for the purposes of this computation.

Houdini’s expression language uses row vectors. Rotation matrices should appear on the right-hand side of vector-matrix multiplications.

For example, to rotate the vector [1, 2, 3] by 10 degrees around the Y axis:

vector("[1, 2, 3]") * rotaxis(10, "[0, 1, 0]")