How do I know which way a face is facing?

Thanks

So I have to apply photo-matching textures, reverse faces, apply photo matching texture again then explode distorted texture on faces, one-by one?

Also, how do I remove the exploded texture association?

Can someone tell me how to get Indigo to render textures when they are applied to surfaces from photo matching? I used 'Project textures from photo' to get the textures onto the model but they aren't being rendered (no textures on render at all). I read that it is a problem with the back of the face...

I have recently started using Sketchup and even more recently started using Indigo. I'm having problems making the light fixture in the tutorial/demo (SkIndigo_1_1_x Getting Started) brighter than its default value. I increased the Power field (under Emitter Attributes) to double but the light was n...