twc/ludus
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add ludus-extraction function from svg

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This commit is contained in:
Scott Richmond 2024-09-09 18:23:13 -04:00
parent 7285e599c5
commit e6b2ffe4c9
1 changed files with 26 additions and 10 deletions
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36
build/ludus.mjs
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@ -2,25 +2,29 @@ import init from "./out.mjs"
const mod = await init() const mod = await init()
let result = null let res = null
let code = null let code = null
export function run (source) { export function run (source) {
code = source code = source
const output = mod.ludus(source).value const output = mod.ludus(source).value
result = JSON.parse(output) res = JSON.parse(output)
return result return res
} }
export function stdout () { export function stdout () {
if (!result) return "" if (!res) return ""
return result.io.console.data return res.io.console.data
} }
export function turtle_commands () { export function turtle_commands () {
if (!result) return [] if (!res) return []
return result.io.turtle.data return res.io.turtle.data
}
export function result () {
return res
} }
const turtle_init = { const turtle_init = {
@ -55,6 +59,7 @@ function resolve_color (color) {
if (typeof color === 'string') return colors[color] if (typeof color === 'string') return colors[color]
if (typeof color === 'number') return [color, color, color, 255] if (typeof color === 'number') return [color, color, color, 255]
if (Array.isArray(color)) return color if (Array.isArray(color)) return color
return [0, 0, 0, 255] // default to black?
} }
let background_color = "black" let background_color = "black"
@ -204,7 +209,7 @@ function turn_to_rad (heading) {
} }
function turn_to_deg (heading) { function turn_to_deg (heading) {
return ((heading % 1) * 360) return (heading % 1) * 360
} }
function svg_render_line (prev, curr) { function svg_render_line (prev, curr) {
@ -227,6 +232,16 @@ function escape_svg (svg) {
.replace(/'/g, "'") .replace(/'/g, "'")
} }
export function extract_ludus (svg) {
const code = svg.split("<ludus>")[1]?.split("</ludus>")[0] ?? ""
return code
.replace(/&amp;/g, "&")
.replace(/&lt;/g, "<")
.replace(/&gt;/g, ">")
.replace(/&quot;/g, `"`)
.replace(/&apos;/g, `'`)
}
function svg_render_path (states) { function svg_render_path (states) {
const path = [] const path = []
for (let i = 1; i < states.length; ++i) { for (let i = 1; i < states.length; ++i) {
@ -277,8 +292,9 @@ export function svg (commands) {
const view_height = (maxY - minY) * 1.2 const view_height = (maxY - minY) * 1.2
const margin = Math.max(view_width, view_height) * 0.1 const margin = Math.max(view_width, view_height) * 0.1
const x1 = minX - margin const x1 = minX - margin
const y1 = minY - margin // don't actually need these:
const x2 = maxX + margin // const y1 = minY - margin
// const x2 = maxX + margin
const y2 = maxY + margin const y2 = maxY + margin
const path = svg_render_path(states) const path = svg_render_path(states)
const turtle = svg_render_turtle(states[states.length - 1]) const turtle = svg_render_turtle(states[states.length - 1])