Clarification of variables about auto-sun-blind

[langestefan]

Hi,

• height and min_height are relative to the lowest point of the blind. You don't really need min_height, the only reason I added it is because I could think of systems where the blind would not be able to close all the way so then the scaling to [0-100]% would be off.
• Regarding your image, the FOV has no relation to the dimensions of the window. You can think of it like a virtual box in the sky, if the sun is within that box we track it, if it's outside the box we do nothing. This is mostly useful when you have large buildings or trees in the FOV of your window. ps. because the earth is so far away from the sun, we consider the sun's rays to be parallel (as opposed to a point source). That makes these calculations easier, because we can always work with elevation and azimuth. There are some images in this thread, might be helpful: https://community.home-assistant.io/t/automatic-blinds-sunscreen-control-based-on-sun-platform/573818/30