Spherical sky bright idea...
Posted: Mon Jan 18, 2010 7:14 pm
...if it's not: just move this thread to "questions" :`)
Per another discussion about the quality of the spherical sky in one of my images, I noticed the stretching was different horizontal and vertical. So I started playing around with 2/1 image proportions matching the 360/180 of the sphere. Eureka! No more differential stretching! So I continued playing, since I was already on a roll and had always been bugged that I could only see the bottom third of the sky images I loved using in PSP behind SU exports. I discovered as long as the horizon line is visible in SU, you'll never see more than the lower half of the sky half of the spherical sky image. So:
I created an 8000/4000 (about the largest image my PSP will save correctly) background split horizontally in the middle. Over that I layered my little sky image (1000/500+) and moved it up so the horizon matched the middle of the background. After I colored the top an average sky color of the image, and the bottom an average ground color, I saved for use as a spherical sky. Works great!...and now I can use all my fav's! (Note: for some reason Twilight brings a spherical sky in with it's center at 90 degrees rather than 0...?)
Whadaya think?
Per another discussion about the quality of the spherical sky in one of my images, I noticed the stretching was different horizontal and vertical. So I started playing around with 2/1 image proportions matching the 360/180 of the sphere. Eureka! No more differential stretching! So I continued playing, since I was already on a roll and had always been bugged that I could only see the bottom third of the sky images I loved using in PSP behind SU exports. I discovered as long as the horizon line is visible in SU, you'll never see more than the lower half of the sky half of the spherical sky image. So:
I created an 8000/4000 (about the largest image my PSP will save correctly) background split horizontally in the middle. Over that I layered my little sky image (1000/500+) and moved it up so the horizon matched the middle of the background. After I colored the top an average sky color of the image, and the bottom an average ground color, I saved for use as a spherical sky. Works great!...and now I can use all my fav's! (Note: for some reason Twilight brings a spherical sky in with it's center at 90 degrees rather than 0...?)
Whadaya think?