Can Sketchup track a ray from the sun to a person in a model through a window so as to mark that spot on the window, throughout the day and year, thus marking out on the window the places needed to block the sun for that one position in the room.
I’d like to find the minimum size and shape of an opaque shade that when applied to a couple of high windows would perfectly block my view of the sun during an hour or two in the summer. The windows shape makes traditional blinds difficult and I do not want a treatment that is dark all the time, let alone opaque. So I am considering using PLC (polymer liquid crystals, a plastic sheet that is (very nearly) transparent when powered up, but opaque (translucent) when powered off) but its hideously expensive (like $70/sqft). Thus the motivation for just the right shape and coverage. (i’ve of course done the low tech, paper taped to the window, prototype but that’s so low tech…).