Builds the birdhouse from its boards, a perch and a chimney.
The inside measures are in model units, Y is up and the front faces Z. The house is turned around Y
by rotation and moved to origin. It throws when the inside sizes are not above 0 or the hole and
perch do not fit the front.
Inside size, board thickness, hole, perch, roof overhang, chimney height and placement
The birdhouse data with each part's shapes and the origin point
A birdhouse with a 45 degree gable roof, a chimney, a round entrance hole and a perch below it, and a back board that reaches below the floor for fixing to a tree or a wall. You vary the inside size, the board thickness, the hole and perch, the roof overhang, the chimney height and the placement.