Window to sky

Description:

Double hung window. Both sashes can be moved, with constraints, and latch can be rotated. Glass texture allows the sun to shine through, lighting the floor, but still be reflective of the ceiling light. Sky has procedural clouds (slightly visible through the window). With ceiling texture, floor tiles, and simple ceiling light. Everything is procedural except the grass outside the window. That is a texture I found packed inside http://www.blendswap.com/blends/view/42499 though not used in the example picture.

All this is from a larger project I am making that includes many objects I got from Blend Swap, so I wanted to put together the parts that I made myself and give them back.