I'm looking for a piece of software that could assist in developing a schematic of an optics setup with train traces. Doesn't have to be fantastically involved (ie cheap/free is best), but I'm finding that drawing and updating lines in 2d solidworks gets tedious (unless I program tons of intelligence into the equations, but then I may as well write some optics software). Has anyone used or heard of something that could help map out optical components, assign source intensities/spectra, lens curvature, mirror refl/trans %, etc? 2d would be fine, 3d would be preferable. Thanks!