Switch between two lightmaps; is it doable and is it codeable?

Hi,
Is it possible to have two baked lightmaps (i.e one from a sunlit scene and one from a moonlit scene), and then shift between them in code?

 

For terrains you can just do this:

Code (csharp):

1.  
2. Terrain terrain;
3. terrain.lightmapIndex = moonlitIndex; //tried this and it works
4.  

For meshes I guess this probably works:

Code (csharp):

1.  
2. MeshRenderer re = GetComponent<MeshRenderer>();
3. re.lightmapIndex = moonlitIndex;
4.  

You will need to know the indices of your lightmaps in the lightmap array. (Look under Maps in the Lightmapping window).

You can also add lightmaps to the array:

Code (csharp):

1.  
2. LightmapData lmapData = new LightmapData();
3. lmapData.lightmapFar = lightmapTextureFar;
4. lmapData.lightmapNear = lightmapTextureNear;
5. int totalLightMaps = LightmapSettings.lightmaps.Length + 1;
6. LightmapData[] lmaps = new LightmapData[totalLightMaps];
7. for (int i = 0; i < totalLightMaps - 1; i++)
8. {
9.     lmaps[i] = LightmapSettings.lightmaps[i];
10. }
11. lmaps[totalLightMaps - 1] = lmapData;
12. LightmapSettings.lightmaps = lmaps;
13.  

 

ohh, how would you combine this into a button? I cant see any variables, are they not needed? Im a newb

 

It works. Nice. Just copy the rendered lightmap out of the scene folder and rename it. Then do a new render with the other light active.

 

There is a script for that on the Wiki:
http://wiki.unity3d.com/index.php/LightMapSwitcher

And that's what I've managed to get from that:
virtualplayground.d2.pl/Unity/houseModels/?access3