I've been futzing around with the idea of trying to create a large hill in a map wherein a good portion of the hill is in a 3-D skybox. But as it'd be a displacement, this raises certain issues. Like how to get the skybox portion and the non-skybox portion to match up.
So here's my idea: you build the map at normal scale, including the portion of the displacement that will be in the skybox. Sew the in-box and out-of-box portions together. Then you copy, paste, and scale down the whole thing- sans props- and then delete the in-map elements as usual. Leaving you with the portion of the hill that's outside, scaled appropriately and set up so that it meets the edges of the actual map.
Would that work? Or would the process of scaling and so on cause inherent difficulties with the whole thing?
that is all i do for my skyboxes, i make everything full scale then,
i put the sky_camera right smack dab in the middle of the world then,
i select everything to be scaled down then,
i select the sky_camera with it,
i make sure is on then,
ctrl+m and set the numbers to:
x: 0.0625 y: 0.0625 z: 0.0625
then it all should scale down and i move it outside the playing area,
add some skybox textures to both areas and it should work.
yes you scale down a full-scale version built with the map.
But be very careful: backup the full scale pieces of skybox. If you scale down other things and try and add it with the skybox, you won't be able to get the new sky camera to match up perfectly with the old one.