I need to write a spreadsheet to find the sun position. I know there are already many programs that do this. However, I need to write one myself because:
1. I'll learn as I write 2. It will give the sun position in the format that I need 3. I can tweak the spreadsheet to give the same answer but in another format. My question is, where do I start? I want to input Latitude Longitude Time The sun position will then be in X Y Z coordinates. I'll back up. I'm drawing a sundial in Autodesk Inventor. I can place lights that represent the sun. I can move the lights while I film my animation and watch the shadows move. That's why I need the sun position in XYZ format. I want the shadows accurate. I don't need the sun to be 150,000,000 km away from my sundial. It only needs to be 100 meters away I want to first write it to output azmith and altitude. (or the same as other programs whatever the output is) I'll then tweak my spreadsheet to convert this to XYZ -- Cheers Donald 0423 102 090 This e-mail is privileged and confidential. If you are not the intended recipient please delete the message and notify the sender. Un-authorized use of this email is subject to penalty of law. So there!
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