New, Easy SkyBox Renderer

Started by RRMessiah, February 25, 2012, 10:27:34 pm

Previous topic - Next topic

Henrik

Hello RRMesiah 
Very new to Terragen and skybox. One thing I wonder is whether I can use Ptgui to put together the images rendered from your Render Skybox app? if so, is there a way to do it,have tried, but the ground picture is distorted. I have tried to combine this tutorial with your app.
http://www.planetside.co.uk/forums/index.php?topic=11608.0
ASUS P8Z68-V PRO/GEN3, Socket-1155|I7 2600K(4.7GHz)|GTX970|GTX580|16GBRAM|C4D|FORMZ|Realflow|Maxwel|Octane|

red_planet

Hi,

I haven't used this utility to generate images for a skybox but I did use  Hugin http://hugin.sourceforge.net/ to stitch together 6 square images into an equirectangular image. This image was then used as an environment map in 3DS Max.

I made sure the Horizontal field of view was slightly greater than 90 degrees.

Hope this helps

Chris

Pentagular Dark

Who says this only has to skyboxes? I can think of some pretty obscure ways this could be used to make planet maps. From inverted planets.
GAH!!! Don't look down here! Look at the posts man!

bigben

July 05, 2012, 11:21:11 pm #18 Last Edit: July 06, 2012, 08:07:07 am by bigben
Quote from: Henrik on June 21, 2012, 05:43:48 am
Hello RRMesiah
Very new to Terragen and skybox. One thing I wonder is whether I can use Ptgui to put together the images rendered from your Render Skybox app? if so, is there a way to do it,have tried, but the ground picture is distorted. I have tried to combine this tutorial with your app.
http://www.planetside.co.uk/forums/index.php?topic=11608.0


Yes you can.  Distortion of images is usually a symptom of setting the incorrect fov or orientation of an image.

I use 90° tiles myself because they're quicker to render and you can feed them directly into a range of applications utilising "sky boxes".
The 2 critical settings for PTGui are in the Create Panorama tab.

1: Uncheck use fast transform. If this is checked you will see small black holes along the seam (especially in the corners)
2: Set the feather slider to the extreme left (Sharp). You have theoretically perfect images so there is no need to feather images at their edges. Feathering will create gaps along the seams as well.

[Edit] FWIW PTGui can also use Panorama Tools for the "rendering" (it was originally made as a GUI for Panorama Tools, hence its name) and the original version of this could also stitch images without overlap nicely.  At some point in its life it appears that the developers who continued Panorama Tools also implemented a faster transformation to improve performance... good for stitching photographs, but it leaves holes in the corners in this situation  :(. A "few" years ago I used it to stitch and re-project rendered frames on the fly such as this 180° cylindical test: http://archive.bigben.id.au/demo/pano_test.avi Still theoretically possible with PTGui. [/edit]

Henrik

Thanks Ben
Seems Ptgui struggling to put together the images in the correct order, but if I rename them(1,2,3,4,5,6) I get it to work by trial and error method)
ASUS P8Z68-V PRO/GEN3, Socket-1155|I7 2600K(4.7GHz)|GTX970|GTX580|16GBRAM|C4D|FORMZ|Realflow|Maxwel|Octane|

Henrik

Still some problem
ASUS P8Z68-V PRO/GEN3, Socket-1155|I7 2600K(4.7GHz)|GTX970|GTX580|16GBRAM|C4D|FORMZ|Realflow|Maxwel|Octane|