Wall Drawings (LeWitt)

Math essence

For each source point s ∈ sources, for k = 1..lines_per_source, draw a straight line from s to a uniformly chosen point p on the regular grid G = { (margin + i·step, margin + j·step) : 0 ≤ i < n_x, 0 ≤ j < n_y }. The total number of lines is |sources| × lines_per_source. Multiple rules (sub_walls 1-7) layer different sources and colors on the same canvas, and the 7th wall is the union of all three sources in all three colors.

Parameters

Reference

First 60 lines of reference.py. Full source: library_external/generative_pioneers_2/sol_lewitt_wall_drawings/reference.py

from __future__ import annotations

from typing import ClassVar

import imageio.v2 as imageio
import numpy as np


class SolLeWittWallDrawings:
    family: ClassVar[str] = "generative_pioneers_2"
    sketch: ClassVar[str] = "sol_lewitt_wall_drawings"

    INSTRUCTIONS = {
        51: {
            "title": "Wall Drawing #51",
            "year": 1969,
            "instruction": "All architectural points connected by straight lines.",
        },
        86: {
            "title": "Wall Drawing #86",
            "year": 1971,
            "instruction": "Ten thousand lines about 10 inches long, covering the wall evenly.",
        },
        118: {
            "title": "Wall Drawing #118",
            "year": 1971,
            "instruction": "On a wall surface, any continuous stretch of wall, using a hard pencil, place fifty points at random. The points should be evenly distributed over the area of the wall. Connect the points with straight lines.",
        },
        273: {
            "title": "Wall Drawing #273",
            "year": 1975,
            "instruction": "A 6-inch (15 cm) grid covering the wall. Lines from corners, sides, and center of the walls to random points on the grid. 1st wall: red from midpoints; 2nd: blue from corners; 3rd: yellow from center; 4th: red+blue; 5th: red+yellow; 6th: blue+yellow; 7th: all three.",
        },
        289: {
            "title": "Wall Drawing #289",
            "year": 1976,
            "instruction": "Six-inch grid covering each of the four black walls. White lines to points on the grid. 1st wall: 24 lines from the center; 2nd: 12 lines from each side midpoint; 3rd: 12 lines from each corner; 4th: all combined.",
        },
    }

    def __init__(
        self,
        dim: int = 512,
        drawing: int = 273,
        sub_wall: int = 7,
        grid_step: int = 24,
        lines_per_source: int = 24,
        bg_color: tuple[int, int, int] = (10, 10, 14),
        ink_red: tuple[int, int, int] = (220, 50, 50),
        ink_blue: tuple[int, int, int] = (50, 80, 220),
        ink_yellow: tuple[int, int, int] = (240, 200, 50),
        ink_white: tuple[int, int, int] = (240, 240, 240),
        thickness: float = 1.0,
        margin: float = 0.04,
        seed: int | None = None,
    ) -> None:
        self.dim = dim
        self.drawing = drawing
        self.sub_wall = sub_wall
        self.grid_step = grid_step