One attribute driven by three attributes?

[Anonymous]

I need a plane to change the image it displays based on the Translate X, Y and Z attributes of a locator that is parented to the camera. Basically:

Displayed Texture	Translate X	Translate Y	Translate Z
Front	>-10; <10	>-10; <10	>0
Back	>-10; <10	>-10; <10	<0
Right	<0	>-10; <10	>-10; <10
Left	>0	>-10; <10	>-10; <10
Underside	>-10; <10	<0	>-10; <10
Top	>-10; <10	>0	>-10; <10
Front-Left	>10	>-10; <10	>0
Front-Right	<-10	>-10; <10	>0
Back-Left	>10	>-10; <10	<0
Back-Right	<-10	>-10; <10	<0
Top-Front	>-10; <10	>10	>0
Top-Back	>-10; <10	>10	<0
Top-Left	>0	>10	>-10; <10
Top-Right	<0	>10	>-10; <10
Underside-Front	>-10; <10	<-10	>0
Underside-Back	>-10; <10	<-10	<0
Underside-Left	>0	<-10	>-10; <10
Underside-Right	<0	<-10	>-10; <10

I've  never done any MEL programming in my life, though, outside some very basic rigging and xgen stuff that was spoonfed to me in online tutorials, I don't know how anything's named or what anything does and I don't think I have the time to learn with this deadline coming.

I started working on a script and I put it in the expression editor for the attribute that's ment to drive the displayed image:

if ( getAttr("CamLoc.translateX") >= -10 && getAttr"CamLoc.translateX" <= 10 && getAttr"CamLoc.translateY" >= -10 && getAttr"CamLoc.translateY" <= 10 && getAttr"CamLoc.translateZ" > 0 )

setAttr "TexturePlane.CamPosition" 0;

else
{

if ( getAttr "CamLoc.translateX" >= -10 && getAttr "CamLoc.translateX" <= 10 && getAttr"CamLoc.translateY" >= -10 && getAttr"CamLoc.translateY" <= 10 && getAttr"CamLoc.translateZ" < 0 )

setAttr "TexturePlane.CamPosition" 3;

}

Of course, it isn't working, and even if it did, based on the table above I'd have to write about 18 of those, which might not be the best approach. Is there a more efficient solution to this?