Help with a bump

[dmedraft]

Any ideas why the bump on the quoins is opposite the bump on the house? I used the same material on both surfaces. On the house, the mortar is bumping in as it should and on the quoins, the mortar is bumping out.

 

Thanks,

dme

[Frosty]

I'd say its the directions of the surface normals.

[dmedraft]

Thank you, that was it.

[Frosty]

No prob.

Reversed normals generally wont be a problem, as long as they are ALL reversed. Cinema applys materials to both the inside and outside surfaces by default, so you merely have to reverse the bump direction (+ or -). However, in a situation like this, where different objects, or pieces of the same object have flipped normals, it will cause strange bumping and shading.