Variable asciiConst

ascii: MultipassFilter<
    {
        cell: {
            default: 8;
            description: "Width of each glyph cell in pixels.";
            label: "Cell size (px)";
            max: 32;
            min: 4;
            type: "int";
            unit: "px";
        };
        color: {
            default: "fixed";
            description: "Use one ink colour on one paper colour, or take each glyph's colour from the picture.";
            label: "Glyph colour";
            options: { fixed: "Ink colour"; source: "Image colours" };
            type: "enum";
        };
        ink: {
            default: readonly [0.85, 1, 0.85];
            description: "Colour of the glyphs when using the ink colour.";
            label: "Ink";
            type: "color";
        };
        invert: {
            default: false;
            description: "Off: bright areas get the dense glyphs. On: dark areas get them instead, which suits dark ink on light paper.";
            label: "Dark = dense";
            type: "bool";
        };
        paper: {
            default: readonly [0.04, 0.07, 0.05];
            description: "Colour of the background.";
            label: "Paper";
            type: "color";
        };
    },
> = ...