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multipleof4andClaude Opus 5.5
d55bb6fc42
Black ink, screentone and white only: reaction tropes (gaan shock, gloom corner, menacing aura, crow silence, petrify), comedy and action (harisen, iai draw, kendo, kyudo, miko), school life (locker letters, zero test, rooftop wind, shared umbrella), town and home (omikuji, shrine prayer, tanabata, floating lantern, alarm smash) and fantasy (yurei, oni, dragon, android, summoning circle, knight, pirate, detective, princess). gen files can now export rim=<px> for a white sticker border, so solid black ink still shows on the black page. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
39 lines
2.4 KiB
JavaScript
39 lines
2.4 KiB
JavaScript
// renders gen/<section>/<subject>/<action>.js into public/<subject>/<action>.{webp,gif}
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// the section folder (bw, color, anime, manga) only picks where it shows in the gallery, it isn't part of the url
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// npm run gen renders only what's missing (published files never change by accident)
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// npm run gen -- cat/blink renders only the named ones, even if they already exist
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// a file can export rim=<px> to get a white sticker border, so black ink still shows on a black page
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import{createCanvas}from'@napi-rs/canvas'
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import sharp from'sharp'
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import{readdirSync as rd,existsSync as ex,mkdirSync as mk,statSync as st}from'fs'
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import{dirname,resolve}from'path'
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import{pathToFileURL as url}from'url'
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const S=256,redo=process.argv.slice(2)
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const walk=d=>rd(d,{withFileTypes:true}).flatMap(e=>e.isDirectory()?walk(`${d}/${e.name}`):`${d}/${e.name}`)
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const files=walk('gen').filter(f=>f.endsWith('.js')).sort(),ids=files.map(f=>f.split('/').slice(2).join('/').slice(0,-3))
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const dup=ids.find((d,i)=>ids.indexOf(d)!=i)
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if(dup)throw Error(`${dup} is in more than one section`)
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for(const[k,f]of files.entries()){
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const id=ids[k],o=`public/${id}`
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if(redo.length?!redo.includes(id):ex(o+'.webp')&&ex(o+'.gif'))continue
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const{default:draw,frames=16,delay=80,rim=0}=await import(url(resolve(f)))
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const px=[...Array(frames)].map((_,i)=>{
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const c=createCanvas(S,S).getContext('2d')
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Object.assign(c,{lineWidth:7,lineCap:'round',lineJoin:'round',strokeStyle:'#111',fillStyle:'#fff'})
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draw(c,i/frames,i)
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if(rim){
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// white silhouette grown by rim px (copies shifted around rings 1..rim px out), then the frame on top
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const r=createCanvas(S,S).getContext('2d')
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for(let d=1;d<=rim;d++)for(let a=0;a<24;a++)r.drawImage(c.canvas,d*Math.cos(a*Math.PI/12),d*Math.sin(a*Math.PI/12))
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r.globalCompositeOperation='source-in';r.fillStyle='#fff';r.fillRect(0,0,S,S)
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r.globalCompositeOperation='source-over';r.drawImage(c.canvas,0,0);return Buffer.from(r.getImageData(0,0,S,S).data.buffer)
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}
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return Buffer.from(c.getImageData(0,0,S,S).data.buffer)
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})
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mk(dirname(o),{recursive:true})
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const img=()=>sharp(Buffer.concat(px),{raw:{width:S,height:S*frames,channels:4,pageHeight:S}})
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await img().webp({lossless:true,effort:6,loop:0,delay}).toFile(o+'.webp')
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await img().gif({effort:10,loop:0,delay}).toFile(o+'.gif')
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console.log(`${id} webp ${st(o+'.webp').size}b gif ${st(o+'.gif').size}b`)
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}
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