Interior rendering and ceiling grids

[Don Sutherland]

When I do a rendering the lights and the 2x2 grid are not in alignment?
What causes this to happen?

[greg.mcdowell]

the map for the grids and the model pattern for the grids aren't in alignment... pretty common problem from what I've seen...

[Don Sutherland]

Is there away to change the alignment of the map for the grids??

[Tom Dorner]

There are a couple of options to solve the problem:

1. You could create a new material with a tile procedure, define the pattern and give it the appropriate x,y offset to align the pattern with the lights. This requires a bit of trial and error and would require a new material for each ceiling where the x,y is different.

2. If the area is small such as a reception area, you could model the ceiling grid using a curtain system or simple extrusions for the T's, then render with a material that does not have the grid pattern built into it.

3. You could render without a grid pattern, then duplicate your view that you rendered, change it to hidden line mode and export it as a JPEG that is the same size as the rendered view. Then in Photoshop composite the two images together.

HTH