uzor-text 1.5.1

Pretext-pattern text layout engine for uzor — greedy word-wrap, rich multi-run spans, InlineBox, and a mixed-run baseline pass over the cosmic-text shaper (Arc 2 Phase 1+2; kinetics/ascii/hyphenation land in later phases).
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//! Regular grid. Tofu cells; the hovered sector rains matrix in that cell's color.

use super::{empty, fx_matrix, tofu, Play};
use crate::ascii::{Cell, CellShader, Coord, Cursor, GridContext};

pub struct Heatmap<'a> {
    pub cols: usize,
    pub rows: usize,
    pub cells: &'a [f64],
    pub play: Play,
}

impl CellShader for Heatmap<'_> {
    fn main(&self, coord: Coord, ctx: &GridContext, cursor: &Cursor) -> Cell {
        if self.cols == 0 || self.rows == 0 || self.cells.is_empty() {
            return empty();
        }
        let cw = (ctx.cols / self.cols).max(1);
        let rh = (ctx.rows / self.rows).max(1);
        let cx = coord.x / cw;
        let cy = coord.y / rh;
        if cx >= self.cols || cy >= self.rows {
            return empty();
        }
        let i = cy * self.cols + cx;
        let v = self.cells.get(i).copied().unwrap_or(0.0).clamp(0.0, 1.0);
        let _ = self.play.motion(ctx.time, cursor.intensity);
        let hue = 220.0 - 180.0 * v;
        let lit = 0.28 + 0.38 * v;
        let hover = cursor.inside
            && (cursor.x as usize / cw) == cx
            && (cursor.y as usize / rh) == cy;
        if hover {
            fx_matrix(coord.index, ctx.time, hue, lit.max(0.48))
        } else {
            tofu(false, hue, lit)
        }
    }
}