MATLAB: What direction of rotation is used in vrrotvec function

Question

Is it right-handed or left-handed rotation in vrml functions such as vrrotvec?

I thaught VRML uses left-handed, but for example:

    % rotating vector pointing UP  to vector pointing LEFT
    vr = vrrotvec([0 1 0], [-1 0 0]);
    % returns:
    0         0    1.0000    1.5708

So, here we see that rotation is righthanded? So in Matlab VRML we use right-handed rotation?

Answer 1

Hi Evgheny,

VRML uses right-handed convention for rotations. See also here:

http://www.web3d.org/x3d/specifications/vrml/ISO-IEC-14772-VRML97/part1/fieldsRef.html#SFRotation

In accord with this, utility functions provided in Simulink 3D Animation use also right-handed convention.

All the best,

Jan