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223015b kap2: demos + barn rgb/cmyk

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- 18 demos aus refactor/didaktik-rewrite-2026 cherry-picked (aliasing-paar, byte-fuer-byte, container-vs-codec, drei-dateien, jpeg-pipeline, kap02-05-eroeffner, kb-vs-kib, nyquist-diagram, pivot-signal-zu-byte, psychoakustik/psychovisualitaet-grafik, raster-vs-vektor, summary-kap02, summary-organizer, usb-c-drei-achsen)
- barn-rgb.png + barn-cmyk.png neu generiert (analog zu ybcbr.webp, kanaltrennung mit korrekter k-extraktion)
- lv-original-vs-fake.jpg + 02-bild-audio-video.md slides wired up
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libretech
2026-06-11 09:55:58 +02:00
parent 7ae2a9964a
commit 028f5f0fb8
40 changed files with 3462 additions and 26 deletions
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slides/223015b/assets/demos/raster-vs-vektor.html
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<!DOCTYPE html>
<html lang="de">
<head>
<meta charset="UTF-8">
<title>Raster vs. Vektor — Pixel oder Anweisung?</title>
<style>
:root {
--dark: #1a1a2e;
--muted: #6b7280;
--soft: #f8fafc;
--border: #cbd5e1;
--hl: #d63384;
--raster: #ea580c;
--vektor: #2563eb;
}
html, body { margin: 0; padding: 0; background: #fff; font-family: system-ui, -apple-system, sans-serif; color: var(--dark); }
body { padding: 30px 40px; }
h1 { text-align: center; margin: 0 0 6px; font-size: 1.75rem; }
.sub { text-align: center; color: var(--muted); margin-bottom: 24px; font-size: 1.05rem; }
.sub strong { color: var(--dark); }
.pair {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 22px;
max-width: 1180px;
margin: 0 auto;
}
.col {
border: 2px solid;
border-radius: 12px;
padding: 16px 18px;
background: #fff;
display: flex;
flex-direction: column;
gap: 10px;
}
.col.raster { border-color: var(--raster); }
.col.vektor { border-color: var(--vektor); }
.col-head { display: flex; justify-content: space-between; align-items: baseline; }
.col-name { font-size: 1.3rem; font-weight: 700; }
.col.raster .col-name { color: var(--raster); }
.col.vektor .col-name { color: var(--vektor); }
.col-tag {
font-size: 0.72rem;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.12em;
color: var(--muted);
}
.col-desc { font-size: 0.85rem; color: var(--muted); line-height: 1.4; }
.views {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 8px;
}
.view { display: flex; flex-direction: column; gap: 4px; }
.view-label {
font-size: 0.68rem;
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.1em;
color: var(--muted);
text-align: center;
}
.view-canvas {
background: var(--soft);
border: 1px solid var(--border);
border-radius: 6px;
aspect-ratio: 1.4;
overflow: hidden;
}
.view-canvas svg { display: block; width: 100%; height: 100%; }
.stats {
background: var(--soft);
border-radius: 6px;
padding: 8px 12px;
font-family: ui-monospace, monospace;
font-size: 0.82rem;
color: var(--dark);
line-height: 1.5;
}
.stats .key { color: var(--muted); }
.stats .val { font-weight: 700; }
.verdict {
margin-top: 22px;
max-width: 1180px;
margin-left: auto;
margin-right: auto;
text-align: center;
border: 2px solid var(--hl);
border-radius: 12px;
padding: 14px 22px;
}
.verdict-q { font-size: 1.1rem; font-weight: 700; color: var(--hl); }
.verdict-a { font-size: 0.93rem; color: var(--dark); margin-top: 4px; }
.verdict-a strong { color: var(--hl); }
</style>
</head>
<body>
<h1>Raster vs. Vektor — Pixel oder Anweisung?</h1>
<div class="sub">Beide zeigen ein Häkchen. Wenn man <strong>reinzoomt</strong>, kommt die Wahrheit raus.</div>
<div class="pair">
<div class="col raster">
<div class="col-head">
<span class="col-name">Raster</span>
<span class="col-tag">PNG · JPEG · GIF</span>
</div>
<div class="col-desc">Ein Gitter aus Pixel-Farbwerten. Jede Position ist festgelegt.</div>
<div class="views">
<div class="view">
<div class="view-label">Original (32 × 22 px)</div>
<div class="view-canvas">
<svg viewBox="0 0 320 220" preserveAspectRatio="xMidYMid meet">
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
<g shape-rendering="crispEdges">
<rect x="20" y="120" width="20" height="20" fill="#ea580c"/>
<rect x="40" y="140" width="20" height="20" fill="#ea580c"/>
<rect x="60" y="160" width="20" height="20" fill="#ea580c"/>
<rect x="80" y="180" width="20" height="20" fill="#ea580c"/>
<rect x="100" y="160" width="20" height="20" fill="#ea580c"/>
<rect x="120" y="140" width="20" height="20" fill="#ea580c"/>
<rect x="140" y="120" width="20" height="20" fill="#ea580c"/>
<rect x="160" y="100" width="20" height="20" fill="#ea580c"/>
<rect x="180" y="80" width="20" height="20" fill="#ea580c"/>
<rect x="200" y="60" width="20" height="20" fill="#ea580c"/>
<rect x="220" y="40" width="20" height="20" fill="#ea580c"/>
<rect x="240" y="20" width="20" height="20" fill="#ea580c"/>
</g>
</svg>
</div>
</div>
<div class="view">
<div class="view-label">4× Zoom</div>
<div class="view-canvas">
<svg viewBox="80 60 160 160" preserveAspectRatio="xMidYMid meet">
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
<g shape-rendering="crispEdges">
<rect x="20" y="120" width="20" height="20" fill="#ea580c"/>
<rect x="40" y="140" width="20" height="20" fill="#ea580c"/>
<rect x="60" y="160" width="20" height="20" fill="#ea580c"/>
<rect x="80" y="180" width="20" height="20" fill="#ea580c"/>
<rect x="100" y="160" width="20" height="20" fill="#ea580c"/>
<rect x="120" y="140" width="20" height="20" fill="#ea580c"/>
<rect x="140" y="120" width="20" height="20" fill="#ea580c"/>
<rect x="160" y="100" width="20" height="20" fill="#ea580c"/>
<rect x="180" y="80" width="20" height="20" fill="#ea580c"/>
<rect x="200" y="60" width="20" height="20" fill="#ea580c"/>
<rect x="220" y="40" width="20" height="20" fill="#ea580c"/>
<rect x="240" y="20" width="20" height="20" fill="#ea580c"/>
</g>
</svg>
</div>
</div>
</div>
<div class="stats">
<div><span class="key">Speicher:</span> <span class="val">32 × 22 × 3 Byte = 2 112 Byte</span></div>
<div><span class="key">Beim Zoom:</span> <span class="val">pixelig — Information ist erschöpft</span></div>
</div>
</div>
<div class="col vektor">
<div class="col-head">
<span class="col-name">Vektor</span>
<span class="col-tag">SVG · PDF · Schriftarten</span>
</div>
<div class="col-desc">Mathematische Anweisungen: <code style="background:#0f0f23;color:#5fb3e4;padding:0 4px;border-radius:3px;">polyline 30,110 → 90,170 → 250,30</code></div>
<div class="views">
<div class="view">
<div class="view-label">Original</div>
<div class="view-canvas">
<svg viewBox="0 0 320 220" preserveAspectRatio="xMidYMid meet">
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
<polyline points="30,130 90,190 270,30" stroke="#2563eb" stroke-width="14" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
</div>
</div>
<div class="view">
<div class="view-label">4× Zoom</div>
<div class="view-canvas">
<svg viewBox="80 60 160 160" preserveAspectRatio="xMidYMid meet">
<rect x="0" y="0" width="320" height="220" fill="#f8fafc"/>
<polyline points="30,130 90,190 270,30" stroke="#2563eb" stroke-width="14" fill="none" stroke-linecap="round" stroke-linejoin="round"/>
</svg>
</div>
</div>
</div>
<div class="stats">
<div><span class="key">Speicher:</span> <span class="val">3 Punkte + Strichbreite = ~80 Byte</span></div>
<div><span class="key">Beim Zoom:</span> <span class="val">scharf — wird neu berechnet</span></div>
</div>
</div>
</div>
<div class="verdict">
<div class="verdict-q">Pixel sind festgenagelt. Vektoren werden bei jedem Zoom <strong>neu berechnet</strong>.</div>
<div class="verdict-a">Faustregel: <strong>Foto → Raster</strong> (kann nicht „neu berechnet" werden). <strong>Logo, Icon, Schrift → Vektor</strong> (skalierbar ohne Verlust).</div>
</div>
</body>
</html>