Module terminal_plot 

Zero-dependency terminal chart rendering for trajectory --plot (MBA-1320).

Presentation code shared by the native CLI and the WASM terminal (MBA-1337 p3 moved it from a main.rs-local mod into the lib so wasm.rs can render the same charts). It stays dependency-free; bindings consumers can simply ignore it.

Two canvas backends share one dot-addressed API (new, width_dots/height_dots, set, render):

• BrailleCanvas packs a 2 (wide) x 4 (tall) grid of dots into a single Unicode Braille Patterns character (U+2800..=U+28FF), giving roughly 2x the horizontal and 4x the vertical resolution of one terminal character cell.
• AsciiCanvas uses the same 2x4 dot-per-cell addressing so callers (in particular render_chart) don’t need to special-case it, but collapses each cell to a single '*' (any dot set) or ' ' (no dots set) — for terminals/fonts without braille glyph coverage.

Deliberately monochrome: no ANSI color/SGR codes appear anywhere in this module. That sidesteps NO_COLOR (https://no-color.org/) entirely — there is nothing to suppress — and keeps output byte-identical whether the terminal honors color, redirects to a file, or is a dumb pipe. Multiple series plotted on one canvas are therefore visually indistinguishable where their dots overlap; render_chart lists every series label in the frame instead of color-coding them. Callers that need series to stay visually separable should render one series per chart (which is what trajectory --plot does: one chart for drop, one for lateral drift).

Structs

AsciiCanvas

ASCII fallback canvas: the same dot-addressed API as BrailleCanvas (a 2x4 dot grid per character cell), but rendered with a single '*' whenever ANY dot in the cell is set, ' ' otherwise — for terminals/fonts without braille glyph coverage.

BrailleCanvas

Braille-dot terminal canvas: each character cell packs a 2x4 grid of dots into one Unicode Braille Patterns codepoint.

Enums

CanvasStyle

Which canvas backend render_chart should use.

Functions

render_chart

Render one or more named (label, points) series into a single framed chart.