a495fcdba6
The gate-1 diagnosis the sprint chartered, inverted by measurement: the shadow geometry is exact (probe2: raycast and rasteriser agree 1.0000/1.0000), the canonical measuring lines just don't cover the bed against vertical hail, and site_02's tr1+q1+q3+q4 at exactly $80 already separates 91.5 FULL vs 35.7 bare (sep 55.8, 0/4 lost) with no model change. Full findings + separation-target proposal in THREADS. Re-verified after the authoring session died un-pushed: all headline numbers reproduce; the bench drives RiggingSession.commit(rig) -> rig.attach(), not the bypassed-attach seam D's landmine names; balance.test's canonical shade-cloth peaks reproduce per-anchor to the last digit. One fix over the original staging: probe3/probe4 labelled per-corner peaks in plan order, but rig.corners is ring order — labels now come from corners[k].anchorId (values were always true; the $80 line's two RATED corners read swapped). Selftest 335/0/0. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
80 lines
3.8 KiB
HTML
80 lines
3.8 KiB
HTML
<!doctype html>
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<html>
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<head><meta charset="utf-8"><title>shadow probe 2 — synthetic</title>
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<style>body{background:#11161a;color:#dde5ea;font:13px/1.5 ui-monospace,Menlo,monospace;padding:18px}pre{white-space:pre}</style></head>
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<body>
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<pre id="out">running…</pre>
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<script type="importmap">
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{ "imports": {
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"three": "../../web/world/vendor/three.module.js",
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"three/addons/": "../../web/world/vendor/addons/"
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} }
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</script>
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<script type="module">
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import * as THREE from '../../web/world/vendor/three.module.js';
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import { RiggingSession } from '../../web/world/js/rigging.js';
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import { SailRig } from '../../web/world/js/sail.js';
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import { RainShadow } from '../../web/world/js/skyfx.js';
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import { FIXED_DT, HARDWARE } from '../../web/world/js/contracts.js';
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const [,, RATED] = HARDWARE;
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const el = document.getElementById('out');
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const lines = []; const log = (s) => { lines.push(s); el.textContent = lines.join('\n'); };
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el.textContent = '';
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// ISOLATE THE RASTERISER FROM THE LEVEL.
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// probe.html showed the real yard's best quad sits over only 25% of the bed, so
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// its shadow numbers can't tell a rasteriser bug from an anchor-placement fact.
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// So: a SYNTHETIC square of anchors dead over the bed, at 4 m. This sail
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// unambiguously covers the whole bed. Grid and raycast must BOTH read ~1.0.
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// Anything less is the shadow model losing cloth it is standing under.
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try {
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const bed = { x: 0, z: 0, w: 6, d: 4 };
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const mk = (id, x, z) => { const pos = { x, y: 4, z }; return { id, type: 'post', pos, sway: () => pos }; };
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// a generous 10x8 square around a 6x4 bed — no edge effects, no excuses
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const anchors = [mk('s1', -5, -4), mk('s2', 5, -4), mk('s3', 5, 4), mk('s4', -5, 4)];
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const calm = { sample:(p,t,o)=>(o||new THREE.Vector3()).set(0,0,0), speedAt:()=>0, rainAt:()=>0,
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rainMmPerHour:()=>0, gustTelegraph:()=>null, setSheltersFromTrees(){}, eventsBetween:()=>[] };
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for (const gridN of [10, 16]) {
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const s = new RiggingSession({ anchors, budget: 9999 });
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for (const a of anchors) s.rig(a.id);
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for (const a of anchors) { const r = s.setHardware(a.id, RATED);
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if (!r.ok) throw new Error(`setHardware ${a.id} refused: ${r.reason}`); }
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s.setTension(1.0);
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const rig = s.commit(new SailRig({ anchors, gridN }));
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for (let i = 0; i < Math.round(12/FIXED_DT); i++) rig.step(FIXED_DT, calm, 0);
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let minY=1e9,maxY=-1e9;
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for (let i=1;i<rig.pos.length;i+=3){ minY=Math.min(minY,rig.pos[i]); maxY=Math.max(maxY,rig.pos[i]); }
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const cov = rig.coverageOver(bed, { x:0, y:1, z:0 }, null);
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const sh = new RainShadow({ groundY: 0 });
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sh.update(rig, 0, -1, 0);
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const frac = sh.fractionOver(bed);
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log(`\n=== gridN ${gridN} (${rig.tris.length/3} tris, ${rig.pos.length/3} nodes) cloth y ${minY.toFixed(2)}..${maxY.toFixed(2)} ===`);
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log(` a 10x4 sail sitting dead over a 6x4 bed. Truth for both numbers is 1.00.`);
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log(` rig.coverageOver(bed, straight up) = ${cov.toFixed(4)} ${cov > 0.99 ? 'ok' : '<-- LOSES CLOTH'}`);
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log(` RainShadow.fractionOver(bed), down = ${frac.toFixed(4)} ${frac > 0.99 ? 'ok' : '<-- LOSES CLOTH'}`);
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// where are the holes? print the grid cells across the bed's footprint
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log(' grid cells over the bed (1 = shadowed):');
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for (let j=0;j<7;j++){
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let row='';
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for (let i=0;i<15;i++){
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const x = bed.x + ((i+0.5)/15 - 0.5)*bed.w;
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const z = bed.z + ((j+0.5)/7 - 0.5)*bed.d;
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const c = sh._idx(x,z);
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row += (c>=0 && sh.ceil[c]>0) ? '1' : '.';
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}
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log(` ${row}`);
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}
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let filled=0; for (let i=0;i<sh.ceil.length;i++) if (sh.ceil[i]>0) filled++;
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const cellA = (sh.half*2/sh.n)**2;
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log(` cells filled ${filled} => ${(filled*cellA).toFixed(1)} m2 shadowed; the sail is 10x8 = 80 m2`);
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}
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} catch (e) { log('THREW: ' + (e && e.stack || e)); }
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document.title = 'probe2 done';
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</script>
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</body></html>
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