Title: background sphere Post by: metalion on February 01, 2014, 05:11:52 AM I learned how to make a panoramic sky so I could project it as a background sphere, but when I apply it it loses clarity
get all blurry and big looking. How can I get it to look clear with a nice resolution? Im guessing its getting stretched out. Title: Re: background sphere Post by: metalion on February 02, 2014, 11:34:14 PM ? is this just a problem that can't be fixed? Ive seen some videos that had spectacular backgrounds so, Im just wondering if that was done with after effects or something.
Title: Re: background sphere Post by: Madman on February 03, 2014, 08:50:33 PM Can you post the parameters and attach a small size example of your background to your post?
Title: Re: background sphere Post by: metalion on February 04, 2014, 04:00:02 AM Mandelbulb3Dv18{
b.....E/....1...w....2....UEHjicvvO..XYgefqLc61EOcB6K8XnFzXNsFo.ahMhz62nn79f10xj ................................tNFDWSJayz1........Y.//.................y.2...wD ...Uz.....U0..../M.0/......j....M5....E3.....AYgqmbYGmoD/.......Cfe8/dkpXm1.NEbq y.....kD12../..........wz..................................u1....y1...sD...../.. .z1...sDr1pzEicP5x9wRTh7aoACzKRSTI3AEJnjdP9tYquCmwvmhJ.sZsJGzMR1Akedm9njPboLJkK7 vwnSV/SuHcL6zeCx1GTc0Xoj......Y9..............sD/6....sD..E..................... .............oAnAt1...sD....z.rbu3.2UeL.k0eS/.Jcu3.wVeL.E8eS/.ncu3......k....k1. .....AQxcz1.......kz..Ak.1UV..4.P....E4...kG....m....c3....F....6/...I1.....Sl52 ...ZdpFG9yzb2zzzRYoWzz7lzn3A3c..zzD...EbG7eFT5uD4Eot8VlJ4z9..0.......2.28.kFrA0. .Ub96aAIVz9.1se7Umvxz0........../EU0.wzzz1...........s/...................E.2c.. zzzz.............0...................2./8.kzzzD...........U4.................... /EU0.wzzz1........................................kzzzjvee0.....zzzzbHJJ.....wzz zvBmx/....kzzzjvQs5.....zzzzi1bT.....wzzzvCly/....kzzzjvMw5.....zzzzinqT.....wzz zvCkz/....kzzzjv..EsUa3feeWCNqGQIJ36wk8EwyLsUa3fn/5OZ7LNls0QiR4.17rPrFKNYpWHZZqN E....2....E.....I....c.....GVlaNDB4R7NoI.A5...............................U/4MU/ 4M........UaNaNaNaNxzoAnAnAnA1yD...................wz........................... ................................................................................ ........................} I cant get the photo to upload, due to 256K limit, kinda small how are people uploading pictures to this forum? if you email me I could send it to you that way. Title: Re: background sphere Post by: metalion on February 04, 2014, 04:12:11 AM Here I sized it down and converted it to jpg, original size I had it at was 2000X1000 png file.
Dont know if this helps. Thanks. TT Title: Re: background sphere Post by: metalion on February 04, 2014, 04:14:12 AM This is what im seeing when its rendered in the scene.
Title: Re: background sphere Post by: Madman on February 06, 2014, 09:39:03 PM Hmm, seem to me, your background is not distorted at all. You've got that technique pretty well under control (better than me ;D). But if your trying to span a 2k X 1k picture over a sphere and only look at a very small part of that sphere at a 1280 X 768 resolution, you will never get a detailed background. You may want to think about a background file size of 20k X 10k (or if that's not achievable, a resolution as high as possible) and rerender. Furthermore, your parameters show that you have added some fog in the lighting tab. If you want a crisp background, you should reduce that to 0.
Title: Re: background sphere Post by: metalion on February 07, 2014, 04:48:48 AM Thanks I think I got it figured out now.learned a few new tricks this week.
:D Title: Re: background sphere Post by: JohnVV on February 09, 2014, 07:35:40 AM i do a lot of map work ( make planet and moon maps of the solar system) and mapping to a sphere is different than to a cylinder http://en.wikipedia.org/wiki/Map_projection#Cylindrical the poles are stretched http://en.wikipedia.org/wiki/List_of_map_projections this is the MOST common in 3d rendering ( besides using a CubeMap) http://en.wikipedia.org/wiki/Equirectangular_projection for a sphere a "Simple Cylindrical " map projection is needed OR use a "cube map" ( AKA "sky box") http://en.wikipedia.org/wiki/Cube_mapping most of the time there is no real good way to remap a photo ( like a panorama ) to a SPHERE .To a cylinder -- YES but a sphere has different geometry . there are some programs like "Mathews Map Projection"( MMPS) http://www.users.globalnet.co.uk/~arcus/mmps/ or likely the best way is to use "The Gimp" and use the "to polar" distort then using the HEAL tool to "FIX" it at the poles. |