https://blog.kleinpixelagency.com/perfect-your-designs-with-imperfection-guide-to-optical-alignment-f76999b5d62d
https://www.russellcottrell.com/photo/centering.htm
Calculating optical center
https://stackoverflow.com/questions/44071333/formula-for-calculating-the-volumetric-center-or-optical-alignment-centroid-of
https://graphicdesign.stackexchange.com/questions/128165/how-to-center-a-shape-so-it-is-visually-centered-in-illustrator
http://www.fineart-photography.com/oc.html
https://math.stackexchange.com/questions/64321/how-to-find-the-center-of-mass-of-a-complex-2d-shape