41 lines
2.2 KiB
JavaScript
41 lines
2.2 KiB
JavaScript
/* 生成两关节零件对类的间隙表，写入 docs/collide.json 的 pair2d 字段。
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* node webapp/tools/gen_pair2d.cjs 默认生成 (2,4) 类（P05/M3 × P07/M5，J3×J4）
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* 重新拟合胶囊（scratch/fit_capsules.py 重写 collide.json）后必须重跑；
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* 求解器按指纹校验，不符会自动弃表回退精算（只是变慢，不会算错）。 */
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const fs = require('fs'), path = require('path');
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const ROOT = path.resolve(__dirname, '..', '..');
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const setup = require(path.join(ROOT, 'tests/route_bench_setup.cjs'));
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const COLF = path.join(ROOT, 'docs/collide.json');
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/* 文本级追加/替换，保持 fit_capsules.py 写出的原格式不动（避免整文件 diff） */
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let text = fs.readFileSync(COLF, 'utf8');
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const cut = text.indexOf(',\n "pair2d":');
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if (cut >= 0) text = text.slice(0, cut) + '\n}\n';
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fs.writeFileSync(COLF + '.tmp', text);
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const { S } = setup(undefined, COLF + '.tmp');
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fs.unlinkSync(COLF + '.tmp');
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const H = 1.0, classes = [[2, 4]];
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const out = {};
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for (const [ga, gb] of classes) {
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const ci = ga * 7 + gb, ja = ga, jb = ga + 1;
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const la = S.LIM[S.ORDER[ja]], lb = S.LIM[S.ORDER[jb]];
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const lo = [la.cont ? -180 : la.lo, lb.cont ? -180 : lb.lo];
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const n = [la.cont ? Math.round(360 / H) : Math.round((la.hi - la.lo) / H) + 1,
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lb.cont ? Math.round(360 / H) : Math.round((lb.hi - lb.lo) / H) + 1];
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const buf = Buffer.alloc(n[0] * n[1] * 2);
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const t0 = Date.now();
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for (let i = 0; i < n[0]; i++) {
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for (let j = 0; j < n[1]; j++) {
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const q = [0, 0, 0, 0, 0, 0];
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q[ja] = lo[0] + i * H; q[jb] = lo[1] + j * H;
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const g = S.classGap(q, ci);
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buf.writeInt16LE(Math.max(-32767, Math.min(32767, Math.floor(g * 100))), 2 * (i * n[1] + j)); // 向下取整：保守
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}
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if (i % 60 === 0) console.error('class', ga + '' + gb, i + '/' + n[0], ((Date.now() - t0) / 1000).toFixed(0) + 's');
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}
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out[ci] = { joints: [S.ORDER[ja], S.ORDER[jb]], lo: lo, h: H, n: n, fp: S.classFingerprint(ci), b64: buf.toString('base64') };
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}
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const body = text.replace(/\s*\}\s*$/, '');
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fs.writeFileSync(COLF, body + ',\n "pair2d": ' + JSON.stringify(out) +
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',\n "pair2d_generated": ' + JSON.stringify(new Date().toISOString()) + '\n}\n');
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console.log('pair2d written', Object.keys(out));
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