| 1 | (function(){ |
| 2 | window.HPX = window.HPX || {}; |
| 3 | window.HPX['word-cascade'] = function(el){ |
| 4 | const U = window.HPX._u; |
| 5 | const k = U.canvas(el), ctx = k.ctx; |
| 6 | const pal = U.palette(el); |
| 7 | const WORDS = ['AI','知识','Graph','Claude','LLM','Agent','Vector','RAG','Token','神经', |
| 8 | 'Prompt','Chain','Skill','Code','Cloud','GPU','Flow','推理','Data','Model']; |
| 9 | let items = []; |
| 10 | let last = -1; |
| 11 | let piles = {}; // column -> stack height |
| 12 | const stop = U.loop((t) => { |
| 13 | ctx.clearRect(0,0,k.w,k.h); |
| 14 | if (t - last > 0.18){ |
| 15 | last = t; |
| 16 | const w = WORDS[(Math.random()*WORDS.length)|0]; |
| 17 | items.push({ |
| 18 | text: w, x: U.rand(40, k.w-40), y: -20, |
| 19 | vy: 0, c: pal[(Math.random()*pal.length)|0], |
| 20 | size: U.rand(16,26), landed: false |
| 21 | }); |
| 22 | } |
| 23 | ctx.textAlign='center'; ctx.textBaseline='middle'; |
| 24 | for (const it of items){ |
| 25 | if (!it.landed){ |
| 26 | it.vy += 0.4; |
| 27 | it.y += it.vy; |
| 28 | const col = Math.round(it.x/60); |
| 29 | const floor = k.h - (piles[col]||0) - it.size*0.6; |
| 30 | if (it.y >= floor){ |
| 31 | it.y = floor; it.landed = true; |
| 32 | piles[col] = (piles[col]||0) + it.size*1.1; |
| 33 | if ((piles[col]||0) > k.h*0.8) piles[col] = 0; // reset if too high |
| 34 | } |
| 35 | } |
| 36 | ctx.fillStyle = it.c; |
| 37 | ctx.font = `700 ${it.size}px system-ui,sans-serif`; |
| 38 | ctx.fillText(it.text, it.x, it.y); |
| 39 | } |
| 40 | // prune old landed |
| 41 | if (items.length > 120){ |
| 42 | items = items.filter(i => !i.landed).concat(items.filter(i=>i.landed).slice(-60)); |
| 43 | } |
| 44 | }); |
| 45 | return { stop(){ stop(); k.destroy(); } }; |
| 46 | }; |
| 47 | })(); |
| 48 |