Shoji frame¶

from woodwright.examples import frames

design = frames.shoji_frame(width=250)

vertical    300 x 5 x 20 mm  oak, 3 pieces: vertical_1, vertical_2, vertical_3
            - 3 x dado 5 mm, 10 deep, in top_face
horizontal  200 x 5 x 20 mm  oak, 3 pieces: horizontal_1, horizontal_2, horizontal_3
            - 3 x dado 5 mm, 10 deep, in bottom_face

def shoji_frame(
    width: float = 200,
    height: float = 300,
    bar_width: float = 5,
    overhang: float = 20,
    stock: Stock = KUMIKO,
) -> Assembly:
    """A small shoji lattice of three vertical and three horizontal bars,
    crossing in nine cross laps; outside sizes.

    The bars reach `overhang` beyond the outer ones. They are `bar_width`
    wide in the lattice and the stock thick across it; each lap takes half
    of that. Where they cross, the vertical bars keep their front halves and
    the horizontal ones their back halves (the reference faces are at the back).
    """
    asm = Assembly("shoji_frame", root_location=STANDING)
    verticals = [asm.add(Board(f"vertical_{i + 1}", stock, height, bar_width)) for i in range(3)]
    horizontals = [asm.add(Board(f"horizontal_{i + 1}", stock, width, bar_width)) for i in range(3)]

    def starts(length: float) -> list[float]:
        """Where the three bars crossing a bar of this length start along it."""
        return [overhang, (length - bar_width) / 2, length - overhang - bar_width]

    # The horizontal bars run to the right, so their left ends cross each
    # vertical bar from its back edge.
    for vertical, x in zip(verticals, starts(width), strict=True):
        for horizontal, y in zip(horizontals, starts(height), strict=True):
            asm.join(
                CrossLap(
                    vertical.back_edge,
                    horizontal.left_end,
                    position=offset(y, vertical.left_end),
                    overhang=x,
                )
            )
    return asm