{"id":"paper-seasons","version":"1.0.0","title":"A Door Into Four Seasons","summary":"An ivory paper door opens on a layered forest valley where spring, summer, autumn and winter slide past while a tiny copper fox waits on the path. Papercut diorama. Loops.","kind":"background","target":"three","collections":["impossible-worlds","hypnotic-loops"],"tags":["papercut","paper art","diorama","door","seasons","forest","fox","spring","summer","autumn","winter","layered","craft","nature","animal","loop","portrait film"],"loopable":true,"motion":"procedural","durationSeconds":8,"status":"published","media":{"poster":"https://aipixelwizard.com/media/paper-seasons/1.0.0/poster.webp","preview":"https://aipixelwizard.com/media/paper-seasons/1.0.0/preview.mp4","sample":"https://aipixelwizard.com/media/paper-seasons/1.0.0/sample.mp4","sampleBytes":386580,"sampleNote":"Pre-rendered with the default settings. Customised settings must be exported locally (npm run render)."},"urls":{"page":"https://aipixelwizard.com/visuals/paper-seasons","manifest":"https://aipixelwizard.com/api/v1/visuals/paper-seasons/versions/1.0.0","agentMd":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/agent.md","files":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/","demo":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/index.html"},"description":"A small ivory arched door in a paper wall swings open on a valley made of five layers of cut paper. Seasonal sheets fold and slide through in turn, spring blossom, summer green, autumn orange and winter blue-white with drifting snow, while a miniature copper fox waits on the winding path. Lit cut edges and soft occlusion between the layers give it depth. The door closes again at the end, so the 8 seconds loop. The film has no settings.","role":"Shader film (three.js): Layered papercut diorama, a finished 8-second portrait film with no settings.","useCases":["A seasonal greeting or a year-in-review opener","A children's or nature channel intro","A \"doorway to another world\" transition"],"synonyms":["paper cut animation","four seasons animation","door opens to a forest","paper diorama","fox in a forest","seasons changing"],"digest":"8a6b9cba6dc55b8ca4929d1354445c6c3d78c54a70511bf18d06b4d7deeb1c6b","implementation":{"target":"three","runtime":"browser","language":"javascript","module":"esm","entry":"src/paper-seasons.js","exports":[{"name":"createPaperSeasons","signature":"createPaperSeasons() => { scene, camera, setSize(width, height), update(time), dispose() }","description":"The film as one full-screen shader; render its scene with its camera straight to the canvas."}],"reusable":["src/paper-seasons.js"],"demo":"demo.js","harness":"index.html"},"dependencies":[{"id":"three","version":"0.185.1","scope":"source","reason":"Renderer and a full-screen shader material."},{"id":"apw-runtime","version":"1.0.0","scope":"demo","reason":"Demo harness."}],"uses":[],"usedBy":[],"params":[],"presets":[],"output":{"width":1080,"height":1350,"fps":30,"durationSeconds":8,"posterSeconds":5.5,"alpha":false,"motion":"procedural","loop":{"seamless":true,"cycleSeconds":8,"method":"Every part of the film is a function of the time modulo its length, and every motion completes whole cycles, so the last frame meets the first."},"seed":null},"composition":{"inputs":"The time in seconds, 0 to 8. The film has no other settings.","outputs":"An opaque full-frame picture, already in display colours: render it straight to the canvas.","coordinates":"Composed for a 4:5 portrait frame and measured by the frame height: in a wider frame the picture stays centred at full height and its background fills the sides; in a narrower one, such as 9:16, the sides are cropped.","lighting":"Soft studio light, with lit cut edges and occlusion between the paper layers.","timing":"The door opens, the four seasonal sheets fold and slide through in turn, then the door closes.","compatibleWith":[],"notes":["Five parallax forest layers move at different speeds.","Petals and snow are cut-paper shapes, not particles.","Every pixel is a function of the time alone, so frames can be rendered in any order."]},"reuse":["Seasonal greeting: the four seasons pass in turn while the door stands open.","Seamless loop: the door closes at the end, so it repeats cleanly.","Doorway transition: the closed door at each end is a clean place to cut."],"integration":{"newProject":"Create a WebGLRenderer on a canvas (no antialiasing), call createPaperSeasons() once and film.setSize(width, height); then for each frame call film.update(timeInSeconds) and renderer.render(film.scene, film.camera).","existingProject":"Copy src/paper-seasons.js, which needs only three. Render film.scene with film.camera into your own canvas or render target; the output is opaque and already in display colours, so use no tone mapping or colour conversion."},"performance":{"notes":"One full-screen fragment shader. About 8 ms a frame at 1080 by 1350 on an integrated Intel GPU (Iris Xe), and about 2 s a frame with software WebGL.","limits":"Plays at 30 frames a second at full size on an integrated GPU."},"limitations":["The film is finished: it has no settings. To change colours or timing, edit the shader.","It is composed for a 4:5 portrait frame.","Its length is fixed at 8 seconds; repeat the loop to fill a longer clip."],"license":{"spdx":"MIT","notice":"Copyright (c) 2026 AI Pixel Wizard. Released under the MIT License. See LICENSE in this folder.","thirdParty":[]},"rights":{"approvedForPublicRelease":true},"provenance":"From the owner's collection Twenty Impossible Worlds: the original GLSL ES 3.00 shader of the film “A Door Into Four Seasons”, created with ChatGPT / Codex and used as published, wrapped for AI Pixel Wizard as a three.js full-screen shader in October 2026. The collection's synthesised soundtrack is not part of this ingredient.","changelog":[{"version":"1.0.0","date":"2026-10-10","notes":"Initial release."}],"verification":{"testedOn":"2026-10-10","inputs":{"paper-seasons@1.0.0":"8a6b9cba6dc55b8ca4929d1354445c6c3d78c54a70511bf18d06b4d7deeb1c6b","three@0.185.1":"664ca387e5fab46ff2daaa6895e1d015426850891af5ea5082cbbcc3985b068c","apw-runtime@1.0.0":"5be859cdac74823ba0bcc32c6daf06688a871104d24db5d4ceaffffd84d7c40d"},"environment":"Chrome 154.0.8037.97 headless on Linux 7.0.0-38-generic (x64), Node 22.14.0","renderer":"WebGL 2 via SwiftShader (software)","width":1080,"height":1350,"fps":30,"frames":240,"renderSeconds":423.4,"loopCheck":{"checked":true,"seamless":true,"maxDifference":0,"note":"Frame 0 vs end state (progress 1): mean |Δ| 0.0000, max |Δ| 0 of 255."},"determinism":{"checked":true,"identical":true},"errors":[],"media":{"poster":"/media/paper-seasons/1.0.0/poster.webp","preview":"/media/paper-seasons/1.0.0/preview.mp4","sample":"/media/paper-seasons/1.0.0/sample.mp4","sampleBytes":386580}},"files":[{"path":"LICENSE","size":1072,"sha256":"8a5f3a96f07e11522ec4bdd0a583356f99bad1245920f9709cee09b995a45153","contentType":"text/plain; charset=utf-8","url":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/LICENSE"},{"path":"asset.json","size":5801,"sha256":"f3b128ff137f6481365243019b76aa8284ab88c111d491aef4401416c627dfb0","contentType":"application/json; charset=utf-8","url":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/asset.json"},{"path":"demo.js","size":680,"sha256":"590be445ee4c960747557be2f356752df40b019445f394d90031ab57cfe488c5","contentType":"text/javascript; charset=utf-8","url":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/demo.js"},{"path":"index.html","size":538,"sha256":"bb166f8f15fba75cac1e8025cf29f71f8882f1320e587db513d1bbf2a277132a","contentType":"text/html; charset=utf-8","url":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/index.html"},{"path":"src/paper-seasons.js","size":11853,"sha256":"c83d807649c041f16003b2946c6fbdac7afd2f7fc7348eba5d295f66d2f1ba03","contentType":"text/javascript; charset=utf-8","url":"https://aipixelwizard.com/registry/paper-seasons/1.0.0/src/paper-seasons.js"}],"warnings":[]}