demo-sequences.rs

1use mrlycore::errors::Result;2use mrlyfig::{ink, save, Board};3use mrlylab::ledger::{designs, terms, Axis, Key, Measure, BUDGET};4use mrlynum::blend::delta;56const COUNT: usize = 8;78fn main() -> Result<()> {9    assert_eq!(designs(1, 2)?.len(), 3);10    assert_eq!(designs(2, 2)?.len(), 6);11    assert_eq!(designs(3, 2)?.len(), 22);12    let mut rows: Vec<(usize, Vec<i128>)> = Vec::new();13    for dimension in 1..=3usize {14        for &code in designs(dimension, 2)? {15            let key = Key::new(code, dimension, 2, Measure::Fills, Axis::Side);16            let (values, capped) = terms(&key, COUNT, BUDGET)?;17            assert!(!capped);18            let mut fold = values.clone();19            for _ in 0..dimension {20                fold = delta(&fold);21            }22            assert!(fold.iter().all(|value| *value == fold[0]));23            assert!(delta(&fold).iter().all(|value| *value == 0));24            if values[0] > 0 {25                rows.push((dimension, values));26            }27        }28    }29    assert_eq!(rows.len(), 28);3031    let mut board = Board::square();32    let frame = board.frame(0.08);33    let sides: Vec<f64> = (0..COUNT).map(|i| ((2 * i + 3) as f64).ln()).collect();34    let logs: Vec<f64> = rows35        .iter()36        .flat_map(|(_, values)| values.iter().map(|value| (*value as f64).ln()))37        .collect();38    let low = logs.iter().copied().fold(f64::MAX, f64::min);39    let high = logs.iter().copied().fold(f64::MIN, f64::max);40    let at = |index: usize, value: i128| {41        (42            frame.x + frame.w * (sides[index] - sides[0]) / (sides[COUNT - 1] - sides[0]),43            frame.y + frame.h * (1.0 - ((value as f64).ln() - low) / (high - low)),44        )45    };46    for dimension in 1..=3usize {47        let color = match dimension {48            1 => ink::fade(ink::dim(), 0.85),49            2 => ink::yellow(),50            _ => ink::blue(),51        };52        for (_, values) in rows.iter().filter(|(d, _)| *d == dimension) {53            let path: Vec<(f64, f64)> = values54                .iter()55                .enumerate()56                .map(|(index, value)| at(index, *value))57                .collect();58            board.polyline(&path, 2.5, color);59            for (x, y) in &path {60                board.disc(*x, *y, 5.5, color);61            }62        }63    }64    save("demo-sequences", &board)?;65    Ok(())66}