Multiple Scenes in 1 whole scene

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  01 January 2018
Multiple Scenes in 1 whole scene

I have been thinking is it possible to put in like more than 70 room scenes into 1 whole world scene which is a city or town maybe even a village or leave the scenes in separatefiles? what are your thoughts?
 
  01 January 2018
Sure. Have each file share the same camera movement, render with transparent alphas, composite.
 
  01 January 2018
You'd definitely want to have them in separate scene files or you'd be dealing with a ton of wasted resources with 69 rooms you aren't using at any given time, unless most everything is instances being used in many places. The other thing to consider is how far away some of those rooms may end up from the world origin and what that will do to the floating point calculations. Unless you're trying to do a single continuous camera move through all 70 rooms, why would you want to?
 
  01 January 2018
And if you plan to do this a lot learn about point cache solutions like Alembic.
There is *huge* overhead from complex scene setups, rigs and fcurves.

Most professional pipelines convert to cache data everything that follows animation and layout (as only they need edits, rig controls and manipulators most of the time).
 
  01 January 2018
Most 3D software has some way of referencing 3D models or scenes - rooms for example - that are actually stored in other scene files, so they can be rendered together like one 3D scene.

I think Autodesk software calls that "XRefs", and the name in other software might be different yet.

This article describes how very complex town/city models can be rendered on a Core i7 with 32GB RAM for example;

https://evermotion.org/tutorials/sh...with-big-scenes

To keep render times down, you could create expressions that basically load 3D rooms only when they are close enough to the camera, or when they are within view of the camera.

Game engines use techniques like this all the time. For example in a driving game, when you drive past a building so it is behind you, the building is often unloaded from memory.
 
  01 January 2018
Would take forever to render. Is there a specific reason you can't do them separately?
 
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