Attaching objects makes the attached object inherit all the normal properties. WTF.
greentooth
This has been driving me mental this morning.
Basically, I have this building I've made out of modular parts, so that the panels and windows all share texture space properly. At the moment only the panels have normal maps.
To get the normal maps to bake and display properly, I used an edit normal modifier to tweak the normals (before Instanced it about).
Now when I try to attach the objects together, the object being attached suddenly absorbs the same normals as the object I'm attaching it too. This results in the normals for every face in my model facing the same way. This is batshit crazy and not what I want.
Why is this inheritance in effect? How do I get it to go away? The only other solution is to manually fix every normal myself after I'm done attaching.
Many thanks to anyone that can shed some light into this!:thumbup: On a side note, Should I be better off just importing my original tiles into UDK and building the modular thing there? :poly124:
Basically, I have this building I've made out of modular parts, so that the panels and windows all share texture space properly. At the moment only the panels have normal maps.
To get the normal maps to bake and display properly, I used an edit normal modifier to tweak the normals (before Instanced it about).
Now when I try to attach the objects together, the object being attached suddenly absorbs the same normals as the object I'm attaching it too. This results in the normals for every face in my model facing the same way. This is batshit crazy and not what I want.
Why is this inheritance in effect? How do I get it to go away? The only other solution is to manually fix every normal myself after I'm done attaching.
Many thanks to anyone that can shed some light into this!:thumbup: On a side note, Should I be better off just importing my original tiles into UDK and building the modular thing there? :poly124:
Replies
I thought there was a solution for this, by attaching both objects to another object with no edited normals (had to find the right order). Can't try it here (only have Maya at work) but I'm pretty sure there was a way to do it like that.
By the way, you may be able to realign all your normals really fast otherwise (once you've attached them all) with the script from this thread: http://www.polycount.com/forum/showthread.php?t=75753
I use it all the time, it's awesome.
Bal that attaching workaround sounds like it might do the job, I'll report back after I've eaten lunch.
E: Had a quick test to satisfy my curiosity, no joy. The new 'un-edited' object didn't affect the normals or have it's normals changed. The attached objects all just adopt the normals of whatever original they are instanced from.
*le sigh*
I'll give the scripts ago after lunch.