2c:null 2d:["$","title",null,{"children":"卷 | GnimOay | Observable"}] 32:[] 30:{"id":"7bfa38477a7b84b5","slug":"juan","title":"卷","thumbnail":"e253bd864380937698c0c35bed798b22910066722cd8a4363106a1926e5a7d80","access_level":"public","create_time":"$D2021-05-28T16:16:00.675Z","update_time":"$D2021-05-28T19:04:51.915Z","view_time":null,"first_public_time":"$D2021-05-28T18:27:48.460Z","has_unpublished_edits":null,"fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"26d48fae205ffe62","login":"gnimoay","name":"GnimOay","avatar_url":"https://avatars-next.observableusercontent.com/79b9cc7dde40573c60d0ca1646cec2d280ec0c69bcd5262fb2336627858a40e3","tier":"starter_2024"},"version":158,"publish_version":158,"role":null,"authored":false,"authors":[{"type":"individual","id":"3ffbfa94b6a22199","login":"gnimoay","name":"GnimOay","avatar_url":"https://avatars-next.observableusercontent.com/79b9cc7dde40573c60d0ca1646cec2d280ec0c69bcd5262fb2336627858a40e3","tier":null}],"members":[{"type":"individual","id":"3ffbfa94b6a22199","login":"gnimoay","name":"GnimOay","avatar_url":"https://avatars-next.observableusercontent.com/79b9cc7dde40573c60d0ca1646cec2d280ec0c69bcd5262fb2336627858a40e3","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"titling":"auto","title":"卷","cells":[{"id":0,"value":"# 卷","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":2,"value":"viewof txt = Inputs.textarea({\n placeholder: \"说点什么\",\n value: \"门前大桥下，游过一群鸭，快来快来数一数，二四六七八。\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":63,"value":"viewof icon = Inputs.radio([\"🌀\", \"～\", \"🦆\", \"🦷\", \"🚗\", \"🎃\", \"💩\"], {\n label: \"填充物\",\n value: \"～\"\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":25,"value":"{\n const base = Math.sqrt(txt.length);\n let [w, h] = [Math.ceil(base), Math.floor(base)];\n if (w * h < txt.length) {\n if (h < w) h++;\n else w++;\n }\n // console.log(txt.length, w, h);\n const table = [];\n for (let index = 0; index < h; ++index) {\n table[index] = [];\n }\n // console.log(\"t\", table);\n\n let count = 0;\n let dir = { x: 1, y: 0 };\n const pos = { x: 0, y: 0 };\n const curWH = { w, h };\n const chars = txt.split(\"\");\n\n while (count < w * h) {\n table[pos.y][pos.x] = chars.shift() || icon;\n const X = pos.x + dir.x;\n const Y = pos.y + dir.y;\n\n if (checkTurning(pos, dir, curWH) || table[Y][X]) {\n dir = calcDir(dir);\n // console.log(\"turn to\", dir);\n }\n\n pos.x += dir.x;\n pos.y += dir.y;\n\n count++;\n }\n\n const str = table.reduce((rst, line) => rst + line.join(\"\") + \"\\n\", \"\");\n return html`

${str}

`;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":131,"value":"## Appendix","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":60,"value":"function calcDir(dir) {\n if(dir.x===1)return {x:0,y:1}\n else if(dir.y===1)return {x:-1,y:0}\n else if(dir.x===-1)return {x:0,y:-1}\n else return {x:1,y:0}\n }","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":82,"value":"function calcWH(wh,dir){\n return dir.x===0?{w:wh.w,h:wh.h-1}:{w:wh.w-1,h:wh.h}\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":69,"value":"function checkTurning(p,d,wh) {\n return(p.x+d.x>=wh.w\n ||p.x+d.x<0\n ||p.y+d.y>=wh.h\n ||p.y+d.y<0)\n }","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"},{"id":102,"value":"","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","providerMetadata":"$undefined","attachments":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W32","stdlib":"1"}} 31:"$30:body"