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August 28, 2024 16:38
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a popping node script
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| import {setTimeout} from 'node:timers/promises'; | |
| const root2 = 2**0.5; | |
| const circ = (r) => { | |
| const rr = Math.round(r); | |
| const buff = Array(rr*2+1).fill(0).map(_ => (Array(rr*2+1).fill(' '))); | |
| const drawLimit = rr / root2; | |
| for (let d1 = 0; d1 < drawLimit; d1++) { | |
| const d2 = ~~((r**2 - d1**2) ** 0.5); | |
| buff[rr-d1][rr-d2] = | |
| buff[rr+d2][rr+d1] = '/'; | |
| buff[rr-d1][rr+d2] = | |
| buff[rr+d2][rr-d1] = '\\'; | |
| buff[rr+d1][rr-d2] = | |
| buff[rr+d1][rr+d2] = '|'; | |
| buff[rr-d2][rr-d1] = | |
| buff[rr-d2][rr+d1] = '_'; | |
| } | |
| console.log(`r=${r}`); | |
| console.log(buff.map( buffLine => `${buffLine.map(c => `${c}${c}`).join('')}` ).join('\n')) | |
| } | |
| const maxSize = Math.floor(Math.min(process.stdout.columns / 4 -1, process.stdout.rows/2 -1)); | |
| for (let r = 1.5; r < maxSize; r*=1.01) { | |
| circ(r); | |
| await setTimeout(16); | |
| console.clear(); | |
| } | |
| console.log('pop!'); |
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run this script in node like:
node circ.jsor: