mirror of
https://github.com/heygen-com/hyperframes.git
synced 2026-09-01 19:42:03 +00:00
Miguel Ángel
406bf316a3
* fix(catalog): make component previews answer their variables panel Every control on a component's catalog page did nothing. Asking caption-camera-follow for a violet accent rendered gold, and so did green and blue, on 166 of the 168 components that declare variables. A component ships a snippet, which is what the page hands you to paste and which carries the declaration plus the script that turns a chosen value into a CSS custom property, and a demo.html which stages and animates it. The preview is built from the demo, and the demo was authored as a copy of the snippet rather than a reference to it. The copies drifted until almost none of them carried the declaration or the reader, so the payload for that page never contained the word violet at all. Components come in two shapes, so the repair does too. 123 ship a snippet that registers its own paused timeline. That snippet is a whole piece, so their preview is now built from it and carries markup, variables and motion together. 45 are markup plus a commented recipe, where the demo owns the motion. Those demos now carry the snippet's declaration, reader and var-driven CSS in the registry itself, written by scripts/catalog/sync-demo-variables.ts. Nothing is patched in at build time. A test runs that tool in dry mode and fails when a demo has drifted again, naming the command that repairs it. It also asserts it inspected more than a hundred components, because a check that silently matches nothing is how this rotted in the first place. Measured by rendering every payload in a real player rather than by reading markup: payloads declaring their variables go from 2 of 168 to 168 of 168, previews that animate go from 166 to 167, and nothing that moved stopped moving. ascii-render-pass and star-rating-fill render a still frame when built from their snippet, so they keep the demo path as a recorded exception and stay in the state they were already in. * refactor(catalog): give the preview pipeline one lookup and one entrypoint guard Follow-up on the same branch, no behaviour change: 42 tests still pass and `sync-demo-variables --check` still reports all 168 components clean. The payload generator and the demo sync had each grown their own copy of "given a component directory, find the snippet and the demo". Both now call `componentFiles`, which is the same duplication-by-copying that broke the previews in the first place. Both catalog generators also carried a byte-identical 12-line guard for "only run main() when this file is the entrypoint". That clone was already in the tree, but nothing had touched both files at once before, so it had never surfaced. It is now `runAsCommand`, and the sync script's variant of the same condition is `isEntrypoint`. The rest is flattening: the layering guards read as a table of conditions instead of a chain, the reporting splits by what it reports, and the entry resolution comes out of `buildPayload` rather than being spliced into it. Also runs the formatter over the demos this branch rewrote. Whitespace only, and `notes-typing` is the only component demo that renders pre-formatted text, which this does not touch.
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{"html":"<!doctype html>\n<html\n lang=\"en\"\n data-composition-variables='[\n {\n \"id\": \"shakeProfile\",\n \"type\": \"enum\",\n \"label\": \"Shake profile\",\n \"default\": \"handheld-normal-mild\",\n \"options\": [\n { \"value\": \"handheld-normal-mild\", \"label\": \"Handheld - normal lens, mild\" },\n { \"value\": \"handheld-normal-strong\", \"label\": \"Handheld - normal lens, strong\" },\n { \"value\": \"handheld-normal-extreme\", \"label\": \"Handheld - normal lens, extreme\" },\n { \"value\": \"handheld-wideangle-mild\", \"label\": \"Handheld - wide angle, mild\" },\n { \"value\": \"handheld-wideangle-strong\", \"label\": \"Handheld - wide angle, strong\" },\n { \"value\": \"handheld-tele-mild\", \"label\": \"Handheld - telephoto, mild\" },\n { \"value\": \"handheld-tele-strong\", \"label\": \"Handheld - telephoto, strong\" },\n { \"value\": \"rig-6d-shake\", \"label\": \"Rig - 6D shake (engine buzz)\" },\n { \"value\": \"rig-6d-wobble\", \"label\": \"Rig - 6D wobble\" }\n ]\n },\n {\n \"id\": \"shakeIntensity\",\n \"type\": \"number\",\n \"label\": \"Intensity multiplier\",\n \"default\": 1,\n \"min\": 0,\n \"max\": 3,\n \"step\": 0.05\n },\n {\n \"id\": \"shakeFrequency\",\n \"type\": \"number\",\n \"label\": \"Frequency multiplier\",\n \"default\": 1,\n \"min\": 0.1,\n \"max\": 4,\n \"step\": 0.05\n },\n {\n \"id\": \"shakeRotation\",\n \"type\": \"boolean\",\n \"label\": \"Include rotation (roll + tilt/pan)\",\n \"default\": true\n }\n ]'\n>\n <head>\n <meta charset=\"utf-8\" />\n <meta name=\"viewport\" content=\"width=1920, height=1080\" />\n <title>Camera Shake</title>\n <script src=\"https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js\"></script>\n <style>\n *,\n *::before,\n *::after {\n margin: 0;\n padding: 0;\n box-sizing: border-box;\n }\n html,\n body {\n width: 1920px;\n height: 1080px;\n overflow: hidden;\n background: transparent;\n }\n\n /* ---- camera-shake ----------------------------------------------------\n Procedural handheld / Steadicam / rig shake for ANY wrapper. Two\n elements: an overflow-hidden FRAME that carries the lens perspective,\n and a RIG inside it that gets the shake transform. Whatever you put\n in the rig becomes \"the shot\".\n\n <div class=\"camera-shake-frame\">\n <div class=\"camera-shake-rig\"> ...your content... </div>\n </div>\n\n cameraShake(tl, \"#my-rig\", { profile: \"handheld-tele-mild\", duration: 8 });\n\n Layers inside the rig may carry data-cs-z=\"-800\" to sit at a depth;\n cameraShake() scales them to compensate so they parallax under the\n camera instead of sliding as a flat card.\n ------------------------------------------------------------------- */\n .camera-shake-frame {\n position: absolute;\n inset: 0;\n overflow: hidden;\n /* perspective is written by cameraShake() from the profile's lens */\n }\n .camera-shake-rig {\n position: absolute;\n inset: 0;\n transform-style: preserve-3d;\n will-change: transform;\n }\n .camera-shake-rig > * {\n transform-style: preserve-3d;\n }\n\n /* ---- self-preview stand-in \"world\" (not part of the snippet) ------- */\n .cs-layer {\n position: absolute;\n inset: 0;\n }\n .cs-sky {\n background: linear-gradient(#070b18 0%, #16264a 52%, #4a6ea8 78%, #b9852f 100%);\n }\n .cs-skyline {\n position: absolute;\n left: 0;\n right: 0;\n bottom: 46%;\n height: 220px;\n background: repeating-linear-gradient(\n 90deg,\n #0d1428 0 70px,\n transparent 70px 96px,\n #101a33 96px 140px,\n transparent 140px 178px\n );\n opacity: 0.85;\n }\n .cs-tower {\n position: absolute;\n bottom: 44%;\n width: 190px;\n background: linear-gradient(#1d2b4d, #0a1024);\n border-top: 6px solid #2f4a80;\n }\n .cs-tower::after {\n content: \"\";\n position: absolute;\n inset: 18px 14px;\n background:\n repeating-linear-gradient(0deg, #ffd48a33 0 10px, transparent 10px 34px),\n repeating-linear-gradient(90deg, #ffd48a2b 0 12px, transparent 12px 40px);\n }\n .cs-t1 {\n left: 300px;\n height: 430px;\n }\n .cs-t2 {\n left: 820px;\n width: 260px;\n height: 640px;\n }\n .cs-t3 {\n left: 1340px;\n height: 380px;\n }\n /* Flat ground plane. A rotateX'd floor would poke through the title\n plane under preserve-3d, so depth here comes from translateZ only. */\n .cs-floor {\n position: absolute;\n left: 0;\n right: 0;\n top: 56%;\n bottom: 0;\n background:\n repeating-linear-gradient(90deg, #4d6ea03d 0 3px, transparent 3px 150px),\n repeating-linear-gradient(0deg, #4d6ea03d 0 3px, transparent 3px 70px),\n linear-gradient(#0a1224, #04070f);\n }\n .cs-title {\n position: absolute;\n left: 0;\n right: 0;\n top: 300px;\n text-align: center;\n font-family: \"Helvetica Neue\", Helvetica, Arial, sans-serif;\n font-weight: 800;\n font-size: 148px;\n line-height: 1.1;\n letter-spacing: -0.03em;\n color: #ffffff;\n text-shadow: 0 12px 44px rgba(0, 0, 0, 0.75);\n }\n .cs-title span {\n display: block;\n }\n .cs-post {\n position: absolute;\n left: 120px;\n bottom: 0;\n width: 46px;\n height: 620px;\n background: linear-gradient(#25324f, #060a14);\n border-radius: 6px;\n }\n .cs-post-b {\n left: auto;\n right: 150px;\n height: 720px;\n }\n\n /* ---- static frame guide: proves the WORLD moves, not the frame ----- */\n #cs-guide {\n position: absolute;\n inset: 0;\n pointer-events: none;\n }\n /* Thirds as four thin bars, not one full-frame gradient layer: a\n full-inset element over the title reads as an occluder to the\n layout checker even when its paint is mostly transparent. */\n #cs-guide .cs-line {\n position: absolute;\n background: rgba(255, 255, 255, 0.25);\n }\n #cs-guide .cs-v1 {\n left: 639px;\n top: 0;\n width: 3px;\n height: 1080px;\n }\n #cs-guide .cs-v2 {\n left: 1279px;\n top: 0;\n width: 3px;\n height: 1080px;\n }\n #cs-guide .cs-h1 {\n left: 0;\n top: 359px;\n width: 1920px;\n height: 3px;\n }\n #cs-guide .cs-h2 {\n left: 0;\n top: 719px;\n width: 1920px;\n height: 3px;\n }\n #cs-guide .cs-reticle {\n position: absolute;\n left: 910px;\n top: 490px;\n width: 100px;\n height: 100px;\n border: 3px solid #ff4d3d;\n border-radius: 50%;\n }\n #cs-guide .cs-reticle::after {\n content: \"\";\n position: absolute;\n left: 47px;\n top: -40px;\n width: 3px;\n height: 180px;\n background: #ff4d3d;\n }\n #cs-guide .cs-tick {\n position: absolute;\n width: 70px;\n height: 70px;\n border: 4px solid #ffffffbb;\n }\n #cs-guide .cs-tl {\n left: 70px;\n top: 70px;\n border-right: 0;\n border-bottom: 0;\n }\n #cs-guide .cs-tr {\n right: 70px;\n top: 70px;\n border-left: 0;\n border-bottom: 0;\n }\n #cs-guide .cs-bl {\n left: 70px;\n bottom: 70px;\n border-right: 0;\n border-top: 0;\n }\n #cs-guide .cs-br {\n right: 70px;\n bottom: 70px;\n border-left: 0;\n border-top: 0;\n }\n #cs-readout {\n position: absolute;\n left: 70px;\n bottom: 170px;\n font-family: Menlo, Consolas, monospace;\n font-size: 30px;\n letter-spacing: 0.02em;\n color: #ffffffe6;\n text-shadow: 0 2px 10px rgba(0, 0, 0, 0.9);\n }\n </style>\n </head>\n <body>\n <!--\n WIRING (what you copy into a host composition):\n 1. the .camera-shake-frame / .camera-shake-rig CSS above\n 2. the cameraShake() helper in the script below (profile table included)\n 3. wrap the thing you want shot:\n <div class=\"camera-shake-frame\">\n <div class=\"camera-shake-rig\" id=\"shot\"> <video .../> </div>\n </div>\n 4. drive it from your paused timeline:\n cameraShake(tl, \"#shot\", { profile: \"handheld-wideangle-strong\", duration: 8 });\n Everything with a `cs-` class below is the self-preview world, not the snippet.\n -->\n <div\n id=\"cs-root\"\n data-composition-id=\"camera-shake\"\n data-start=\"0\"\n data-duration=\"6\"\n data-fps=\"30\"\n data-width=\"1920\"\n data-height=\"1080\"\n style=\"position: relative; width: 1920px; height: 1080px; background: #05070f\"\n >\n <div\n class=\"camera-shake-frame clip\"\n id=\"cs-frame\"\n data-start=\"0\"\n data-duration=\"6\"\n data-track-index=\"0\"\n >\n <!-- The rig is deliberately larger than the frame (overscan) and\n deliberately leaves it under shake: that IS the effect, so every\n moving layer is marked as intentional overflow. -->\n <div class=\"camera-shake-rig\" id=\"cs-rig\" data-layout-allow-overflow>\n <div class=\"cs-layer cs-sky\" data-cs-z=\"-900\" data-layout-allow-overflow></div>\n <div class=\"cs-layer cs-farlayer\" data-cs-z=\"-520\" data-layout-allow-overflow>\n <div class=\"cs-skyline\" data-layout-allow-overflow></div>\n </div>\n <div class=\"cs-layer cs-midlayer\" data-cs-z=\"-240\" data-layout-allow-overflow>\n <div class=\"cs-tower cs-t1\" data-layout-allow-overflow></div>\n <div class=\"cs-tower cs-t2\" data-layout-allow-overflow></div>\n <div class=\"cs-tower cs-t3\" data-layout-allow-overflow></div>\n </div>\n <div class=\"cs-layer cs-floorlayer\" data-cs-z=\"-90\" data-layout-allow-overflow>\n <div class=\"cs-floor\" data-layout-allow-overflow></div>\n </div>\n <div class=\"cs-layer cs-titlelayer\" data-cs-z=\"0\" data-layout-allow-overflow>\n <div class=\"cs-title\">\n <span>CAMERA</span>\n <span>SHAKE</span>\n </div>\n </div>\n <div class=\"cs-layer cs-nearlayer\" data-cs-z=\"110\" data-layout-allow-overflow>\n <div class=\"cs-post\" data-layout-allow-overflow></div>\n <div class=\"cs-post cs-post-b\" data-layout-allow-overflow></div>\n </div>\n </div>\n </div>\n\n <div id=\"cs-guide\" class=\"clip\" data-start=\"0\" data-duration=\"6\" data-track-index=\"1\">\n <div class=\"cs-line cs-v1\"></div>\n <div class=\"cs-line cs-v2\"></div>\n <div class=\"cs-line cs-h1\"></div>\n <div class=\"cs-line cs-h2\"></div>\n <div class=\"cs-tick cs-tl\"></div>\n <div class=\"cs-tick cs-tr\"></div>\n <div class=\"cs-tick cs-bl\"></div>\n <div class=\"cs-tick cs-br\"></div>\n <div class=\"cs-reticle\"></div>\n <div id=\"cs-readout\">profile</div>\n </div>\n </div>\n\n <script>\n /* =====================================================================\n camera-shake - procedural handheld / Steadicam / rig camera shake.\n\n PROVENANCE + LICENCE. The nine profiles below are measured PARAMETER\n VALUES (amplitudes in degrees, frequencies in Hz, three octaves per\n axis) read off Unity Cinemachine's shipped noise presets. Cinemachine\n is under the Unity Companion License, which is NOT permissive: no\n Unity file is vendored, copied or imported here, and none of the code\n below derives from Unity source. What is reused is the numeric data -\n facts about how much a camera moves - plus a three-line sampler shape\n that is standard mathematics (sum of octaves of noise / cosine). The\n noise function, the screen-space projection, the lens model, the\n overscan solver and the seek-safe driver are all original.\n\n DETERMINISM. Every value is a closed-form function of `t`:\n channel(t) = (valueNoise(freq*t + offset) - 0.5) * amplitude\n channel(t) = cos((freq*t + offset) * 2PI) * amplitude * 0.5\n No accumulator, no dt, no clock, no unseeded random. Seeking straight\n to frame N produces exactly the same state as stepping to frame N.\n The per-frame work is driven from a PROPERTY SETTER on a tweened\n driver object - NOT from tl.eventCallback(\"onUpdate\"), which GSAP\n suppresses on seek() and which would freeze the shake on frame 0.\n ===================================================================== */\n (function () {\n window.__timelines = window.__timelines || {};\n\n var RAD = Math.PI / 180;\n\n /* ---- the nine profiles ------------------------------------------\n rot[octave] = [ [ampXdeg, freqHz], [ampY, freq], [ampZ, freq] ]\n null = the preset has no channel on that axis for that octave.\n `lens` selects the focal length used for the screen projection.\n\n The optical truth in this table: wide-angle carries 12 deg on X\n where telephoto carries 4 deg, because a long lens magnifies\n angular jitter - amplitude scales inversely with focal length.\n Keep the 3x ratio; it is the whole reason there are lens variants.\n ------------------------------------------------------------------ */\n var CS_PROFILES = {\n \"handheld-normal-mild\": {\n lens: \"normal\",\n rot: [\n [[7, 0.15], [5, 0.1], null],\n [[4, 0.8], [2, 0.75], null],\n [[1, 1.2], [0.8, 1.5], null],\n ],\n },\n \"handheld-normal-strong\": {\n lens: \"normal\",\n rot: [\n [[10, 0.4], [10, 0.06], null],\n [[5, 1.44], [3, 0.73], null],\n [[3, 2.49], [1, 2.0], null],\n ],\n },\n \"handheld-normal-extreme\": {\n lens: \"normal\",\n rot: [\n [[15, 0.2], [7, 0.25], null],\n [[5, 0.9], [3, 1.0], null],\n [[2, 2.0], null, null],\n ],\n },\n \"handheld-wideangle-mild\": {\n lens: \"wide\",\n rot: [\n [[12, 0.15], [5, 0.1], null],\n [[5, 0.6], [4, 0.45], null],\n [[1, 1.5], [1, 1.2], null],\n ],\n },\n \"handheld-wideangle-strong\": {\n lens: \"wide\",\n rot: [\n [[17.46, 0.5], [5, 0.25], null],\n [\n [12.47, 0.94],\n [4, 0.5],\n [1, 0.4],\n ],\n [[4, 1.2], [2, 1.3], null],\n ],\n },\n \"handheld-tele-mild\": {\n lens: \"tele\",\n rot: [\n [[4, 0.2], [2, 0.15], null],\n [[2, 0.4], [2, 0.5], null],\n [[1, 0.7], [1, 0.6], null],\n ],\n },\n \"handheld-tele-strong\": {\n lens: \"tele\",\n rot: [\n [\n [6.19, 0.39],\n [4, 0.15],\n [1, 0.1],\n ],\n [[1.84, 1.75], [0.5, 0.9], null],\n [[2.3, 2.0], [0.5, 1.4], null],\n ],\n },\n /* 6D Shake also carries POSITION channels (Unity world units, not\n degrees). Every position channel is a \"constant\" (cosine) channel\n except octave-2 Y, which is noise - that asymmetry is in the\n measured data and is kept. */\n \"rig-6d-shake\": {\n lens: \"normal\",\n rot: [\n [\n [0.09, 5.83],\n [0.059, 1.8],\n [0.017, 2.38],\n ],\n [\n [0.14, 9.17],\n [0.041, 11.35],\n [0.009, 10.52],\n ],\n [\n [0.15, 57.17],\n [0.048, 54.17],\n [0.016, 63.76],\n ],\n ],\n pos: [\n [\n [0.011, 3.2, 1],\n [0.059, 1.9, 1],\n [0.021, 3.33, 1],\n ],\n [\n [0.009, 7.7, 1],\n [0.04, 9.1, 0],\n [0.009, 9.22, 1],\n ],\n [\n [0.002, 51.51, 1],\n [0.05, 55.54, 1],\n [0.017, 58.55, 1],\n ],\n ],\n },\n \"rig-6d-wobble\": {\n lens: \"normal\",\n rot: [\n [\n [0.987, 5.2],\n [1.34, 5.39],\n [2, 2.23],\n ],\n [\n [0.73, 9.17],\n [0.86, 11.35],\n [0.51, 8.31],\n ],\n [\n [0.78, 13.52],\n [0.55, 27.66],\n [0.28, 18.91],\n ],\n ],\n },\n };\n\n /* Lens -> pinhole projection distance, in pixels.\n\n Two constraints, and they have to be satisfied together:\n 1) SCALE. These amplitudes were authored against a camera with a\n 60 degree VERTICAL field of view, so the \"normal\" lens must\n reproduce that framing or every profile comes out roughly twice\n as violent as intended: D_normal = (H/2) / tan(30deg).\n 2) RATIO. 28 / 50 / 85mm are the standard wide / normal / tele\n primes; D scales with focal length, so wide:tele is 1:3.04 -\n the exact reciprocal of the 12deg:4deg amplitude ratio in the\n profile table. That reciprocal is why all seven handheld presets\n land within ~15% of the same on-screen displacement while still\n looking like completely different lenses. */\n var CS_LENS_MM = { wide: 28, normal: 50, tele: 85 };\n var CS_REF_VFOV_DEG = 60;\n\n /* Unity position channels are world units with no pixel equivalent.\n 240 px/unit is AUTHORED (it puts 6D Shake's buzz at a few pixels,\n which is what an engine-vibration preset should look like). It is\n the one number here that is not measured. */\n var CS_UNIT_PX = 240;\n\n /* Tilting the content plate is a stand-in for rotating the camera, and\n it degenerates. The plate is a finite rectangle sitting AT the\n projection distance, so tipping it drives its far corner backwards\n by (half-diagonal * sin tilt); once that approaches D the corner\n crosses the eye plane, the projection blows up, and NO amount of\n overscan covers the frame - increasing the scale only pushes the\n corner further behind the eye. It bites first on wide lenses, where\n D is small and the plate is optically enormous.\n\n So the tilt ceiling is derived, not picked: allow the corner to sink\n at most a quarter of the way to the eye. 28mm gets ~6.8 deg, 50mm\n ~12.3 deg, 85mm ~21.2 deg - wide lenses keystone least, which is\n also what they look like. The FRAMING swing, which is what the\n measured degrees actually encode, is never clamped: the shot still\n moves by the full authored amount and only the world's keystone\n stops growing. */\n var CS_TILT_DEPTH_BUDGET = 0.25;\n\n /* ---- deterministic 1-D value noise (original implementation) ------\n Integer hash -> [0,1), smootherstep interpolation between lattice\n points. Pure function of (x, seed): no state, no Math.random. */\n function csHash(i, seed) {\n var h = Math.imul(i | 0, 374761393) + Math.imul(seed | 0, 668265263);\n h = (h ^ (h >>> 13)) >>> 0;\n h = Math.imul(h, 1274126177) >>> 0;\n return ((h ^ (h >>> 16)) >>> 0) / 4294967296;\n }\n function csNoise(x, seed) {\n var i = Math.floor(x);\n var f = x - i;\n var u = f * f * f * (f * (f * 6 - 15) + 10);\n return csHash(i, seed) * (1 - u) + csHash(i + 1, seed) * u;\n }\n\n /* One channel of one octave. `constant` picks the cosine form.\n Each channel gets its own seed AND its own time offset: sharing\n offsets correlates the axes and the shake collapses into a diagonal\n line, which is the classic tell of fake handheld. */\n function csChannel(amp, freq, t, seed, constant) {\n var u = freq * t + seed * 7.13;\n if (constant) return Math.cos(u * 2 * Math.PI) * amp * 0.5;\n return (csNoise(u, seed) - 0.5) * amp;\n }\n\n function csSample(profile, t, intensity, freqScale) {\n var rot = [0, 0, 0];\n var pos = [0, 0, 0];\n var o, a, ch;\n for (o = 0; o < profile.rot.length; o++) {\n for (a = 0; a < 3; a++) {\n ch = profile.rot[o][a];\n if (!ch) continue;\n rot[a] += csChannel(ch[0] * intensity, ch[1] * freqScale, t, o * 3 + a, 0);\n }\n }\n if (profile.pos) {\n for (o = 0; o < profile.pos.length; o++) {\n for (a = 0; a < 3; a++) {\n ch = profile.pos[o][a];\n if (!ch) continue;\n pos[a] += csChannel(ch[0] * intensity, ch[1] * freqScale, t, 32 + o * 3 + a, ch[2]);\n }\n }\n }\n return { pitch: rot[0], yaw: rot[1], roll: rot[2], px: pos[0], py: pos[1], pz: pos[2] };\n }\n\n /* ---- the public helper ------------------------------------------\n cameraShake(tl, target, opts)\n profile one of the nine ids\n intensity amplitude multiplier (default 1)\n frequency frequency multiplier (default 1)\n rotation false = translation only (gimbal-stabilised look)\n duration seconds of shake (default 6)\n at timeline position (default 0)\n fps sampling rate for the overscan solve (default 30)\n overscan force a scale instead of solving for one\n Returns { distance, overscan, peakX, peakY, peakRoll }.\n ------------------------------------------------------------------ */\n window.cameraShake = function (tl, target, opts) {\n opts = opts || {};\n var el = typeof target === \"string\" ? document.querySelector(target) : target;\n if (!el) return null;\n\n var profile = CS_PROFILES[opts.profile] || CS_PROFILES[\"handheld-normal-mild\"];\n var intensity = opts.intensity === undefined ? 1 : Number(opts.intensity);\n var freqScale = opts.frequency === undefined ? 1 : Number(opts.frequency);\n var withRotation = opts.rotation !== false;\n var dur = opts.duration === undefined ? 6 : Number(opts.duration);\n var at = opts.at === undefined ? 0 : Number(opts.at);\n var fps = opts.fps === undefined ? 30 : Number(opts.fps);\n\n var box = el.getBoundingClientRect();\n var W = box.width || el.offsetWidth || 1920;\n var H = box.height || el.offsetHeight || 1080;\n var D = (H / 2 / Math.tan((CS_REF_VFOV_DEG / 2) * RAD)) * (CS_LENS_MM[profile.lens] / 50);\n\n // The frame (overflow-hidden parent) carries the lens perspective so\n // that depth layers inside the rig parallax instead of sliding flat.\n var frame = el.parentElement;\n if (frame) frame.style.perspective = D + \"px\";\n\n // Depth layers: compensate scale so a layer at z still fills frame.\n var layers = el.querySelectorAll(\"[data-cs-z]\");\n for (var i = 0; i < layers.length; i++) {\n var z = Number(layers[i].getAttribute(\"data-cs-z\")) || 0;\n layers[i].style.transform = \"translateZ(\" + z + \"px) scale(\" + (D - z) / D + \")\";\n }\n\n var maxTiltDeg =\n Math.asin(Math.min(0.9, (CS_TILT_DEPTH_BUDGET * D) / Math.sqrt((W * W + H * H) / 4))) /\n RAD;\n function clampTilt(deg) {\n return Math.max(-maxTiltDeg, Math.min(maxTiltDeg, deg));\n }\n\n function state(t) {\n var s = csSample(profile, t, intensity, freqScale);\n // Pinhole projection: a camera rotation of theta about its nodal\n // point shifts the projected image by D*tan(theta). That shift and\n // the plate rotation together ARE the rotation-about-the-nodal-\n // point decomposition - it is not double counting.\n var x = -D * Math.tan(s.yaw * RAD) + s.px * CS_UNIT_PX;\n var y = D * Math.tan(s.pitch * RAD) + s.py * CS_UNIT_PX;\n return {\n x: x,\n y: y,\n roll: withRotation ? clampTilt(s.roll) : 0,\n pitch: withRotation ? clampTilt(s.pitch) : 0,\n yaw: withRotation ? clampTilt(s.yaw) : 0,\n dolly: 1 + (s.pz * CS_UNIT_PX) / D,\n };\n }\n\n // Overscan. The shake is a closed form, so the scale that keeps the\n // plate covering the frame is computed per frame and the worst kept.\n // Per frame, not worst-of-each-axis: peak pitch and peak yaw do not\n // land on the same frame, and combining their maxima would zoom in\n // for a frame that never exists. Three terms:\n // translation - the plate must reach 2*|offset| further\n // roll - a rolled W x H rect covers W x H at\n // (W cos r + H sin r) / W (and the H twin)\n // keystone - under perspective the edge that tips AWAY shrinks\n // toward the projection centre. The lever arm is NOT\n // the plate half-size: CSS projects about the FRAME's\n // perspective-origin, so a plate that is translated\n // AND tipped swings its far corner about a point\n // |offset| further out. Using (H/2 + |y|) instead of\n // H/2 is what makes this hold on the wide-angle\n // profiles; the earlier H/2 form tore a corner off\n // the frame at 28mm. Verified by DOM hit-test probe\n // across all nine profiles at intensity 1, 2 and 3.\n var maxX = 0,\n maxY = 0,\n maxRoll = 0,\n overscan = 1;\n for (var f = 0; f <= Math.ceil(dur * fps); f++) {\n var st = state(f / fps);\n maxX = Math.max(maxX, Math.abs(st.x));\n maxY = Math.max(maxY, Math.abs(st.y));\n maxRoll = Math.max(maxRoll, Math.abs(st.roll));\n var rr = Math.abs(st.roll) * RAD;\n var need =\n (Math.max(\n (W * Math.cos(rr) + H * Math.sin(rr)) / W,\n (H * Math.cos(rr) + W * Math.sin(rr)) / H,\n ) *\n Math.max(1 + (2 * Math.abs(st.x)) / W, 1 + (2 * Math.abs(st.y)) / H) *\n (1 +\n ((H / 2 + Math.abs(st.y)) / D) * Math.sin(Math.abs(st.pitch) * RAD) +\n ((W / 2 + Math.abs(st.x)) / D) * Math.sin(Math.abs(st.yaw) * RAD))) /\n Math.max(0.5, st.dolly);\n overscan = Math.max(overscan, need);\n }\n overscan = opts.overscan === undefined ? overscan * 1.02 : Number(opts.overscan);\n\n function apply(t) {\n var s = state(t);\n gsap.set(el, {\n x: s.x,\n y: s.y,\n rotation: s.roll,\n rotationX: s.pitch,\n rotationY: -s.yaw,\n scale: overscan * s.dolly,\n });\n }\n\n // Seek-safe driver: GSAP writes `t` on every render, including\n // seek(), so the setter runs on every frame. An onUpdate callback\n // would NOT - GSAP suppresses events on seek and the shake would\n // freeze on frame 0.\n var driver = {};\n var value = 0;\n Object.defineProperty(driver, \"t\", {\n get: function () {\n return value;\n },\n set: function (next) {\n value = next;\n apply(next);\n },\n });\n apply(0);\n tl.to(driver, { t: dur, duration: dur, ease: \"none\" }, at);\n\n return {\n distance: D,\n overscan: overscan,\n peakX: maxX,\n peakY: maxY,\n peakRoll: maxRoll,\n };\n };\n\n /* ---- self-preview (not part of the snippet) ----------------------- */\n var vars =\n window.__hyperframes && window.__hyperframes.getVariables\n ? window.__hyperframes.getVariables()\n : {};\n var PROFILE = vars.shakeProfile || \"handheld-normal-mild\";\n var INTENSITY = vars.shakeIntensity === undefined ? 1 : Number(vars.shakeIntensity);\n var FREQUENCY = vars.shakeFrequency === undefined ? 1 : Number(vars.shakeFrequency);\n var ROTATION = !(vars.shakeRotation === false || vars.shakeRotation === \"false\");\n\n var tl = gsap.timeline({ paused: true });\n var info = window.cameraShake(tl, \"#cs-rig\", {\n profile: PROFILE,\n intensity: INTENSITY,\n frequency: FREQUENCY,\n rotation: ROTATION,\n duration: 6,\n fps: 30,\n });\n var readout = document.getElementById(\"cs-readout\");\n if (readout && info) {\n readout.textContent =\n PROFILE +\n \" | \" +\n CS_LENS_MM[(CS_PROFILES[PROFILE] || CS_PROFILES[\"handheld-normal-mild\"]).lens] +\n \"mm | x\" +\n INTENSITY +\n \" amp x\" +\n FREQUENCY +\n \" freq | rot \" +\n (ROTATION ? \"on\" : \"off\") +\n \" | overscan \" +\n info.overscan.toFixed(3);\n }\n window.__timelines[\"camera-shake\"] = tl;\n })();\n </script>\n </body>\n</html>\n"} |