Same orchard. Fewer calls.

/* Generated by scripts/build-codrops-article-studies.mjs.
MIT License

Copyright (c) 2026 StyleGallery contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Scope: independently authored study HTML, CSS, JavaScript, shaders and SVG only. Original articles, source projects, brands, artwork and screenshots are excluded. Their licenses and acquisition dispositions are unchanged.
*/
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renderer.outputColorSpace=THREE.SRGBColorSpace;
renderer.setClearColor(0x071e22,0);
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const scene=new THREE.Scene(),camera=new THREE.PerspectiveCamera(40,1,.1,100),geometry=new THREE.BoxGeometry(1,1,1),material=new THREE.MeshStandardMaterial({color:0xb9e3a5,roughness:.58,metalness:.12});
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let transformKey='',renderCount=0,frameCounter=0,phase=.2,frameRequest=0,lastFrame=0,userPaused=true,visibilitySuspended=document.hidden,viewKey='',observations={};
function orchardTransforms(count,phase){const side=Math.ceil(Math.sqrt(count)),items=[];for(let i=0;i<count;i++){const x=i%side-(side-1)/2,z=Math.floor(i/side)-(side-1)/2,distance=Math.hypot(x,z),height=1.05+(.5+.5*Math.sin(x*.82+phase*2.8)*Math.cos(z*.7-phase*1.8))*2.25;items.push({position:[x*.71,(height-2.1)/2,z*.71],rotation:[.03*Math.sin(z+phase),.13*Math.sin(distance+phase),.045*Math.cos(x-phase)],scale:[.43,height,.43]});}return items;}
function updateOrchard(count){const key=count+'|'+phase;if(key===transformKey)return;const items=orchardTransforms(count,phase);items.forEach((item,i)=>{dummy.position.fromArray(item.position);dummy.rotation.set(...item.rotation);dummy.scale.fromArray(item.scale);dummy.updateMatrix();matrix.copy(dummy.matrix);meshes[i].matrix.copy(matrix);meshes[i].matrixWorldNeedsUpdate=true;instances.setMatrixAt(i,matrix);});meshes.forEach((mesh,i)=>{mesh.visible=i<count;});instances.count=count;instances.instanceMatrix.needsUpdate=true;transformKey=key;}
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function scheduleOrchard(){cancelAnimationFrame(frameRequest);frameRequest=0;if(disposed||userPaused||visibilitySuspended||isReduced)return;lastFrame=performance.now();frameRequest=requestAnimationFrame(advanceOrchard);}
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const resizeObserver=new ResizeObserver(repaint);resizeObserver.observe(canvas);cleanups.push(()=>{cancelAnimationFrame(frameRequest);resizeObserver.disconnect();instances.dispose();geometry.dispose();material.dispose();});install(renderOrchard);
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MIT License

Copyright (c) 2026 StyleGallery contributors

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Scope: independently authored study HTML, CSS, JavaScript, shaders and SVG only. Original articles, source projects, brands, artwork and screenshots are excluded. Their licenses and acquisition dispositions are unchanged.


Bundled dependency: Three.js 0.160.0. The following notice applies to its unmodified library, embedded in index.html.

The MIT License

Copyright © 2010-2023 three.js authors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

# Same orchard. Fewer calls.

Independent article case study. Domain: website consumer / Design Engineering presentation.

A deterministic array of original column transforms feeds either separate Three.js Mesh objects or one InstancedMesh. A single render reports renderer.info draw calls and triangles, while the drawing buffer reports actual pixel dimensions. Object count, DPR and scheduling are separate controls; no frame-rate or universal speedup claim is made.

## Attribution and evidence

Studied: [Building Efficient Three.js Scenes: Optimize Performance While Maintaining Quality](https://tympanus.net/codrops/2025/02/11/building-efficient-three-js-scenes-optimize-performance-while-maintaining-quality/), Niccolò Fanton. Article SHA-256: 140101cd39681ca74a910e82f0b76c2bd86a4ed91120e29bef2329b88071b952. Analysis SHA-256: 32730f2995a7ce6a3ef48a5686f8290598b4ad4f127b089c10bd5e6b5373182d. Source revision: e14bcdfc780c76fd687b48bfc38f858a762277177b06f31fae7240cbb8e31c00. The revision hashes the article/analysis hashes, the analyst principle and code-block evidence references, plus pinned original source/line hashes and the implementation contract; it identifies studied evidence, not a claim that the original demo executes.

Original acquisition: acquired. Original license: MIT. originalSourceAcquired: true. Source code acquisition is complete. Original runtime remains unresolved: The original scene imports models/textures explicitly excluded from the project MIT grant; 87 third-party assets remain without a redistribution grant. The complete original scene cannot be published from the acquired closure.

No original article prose, code, artwork, source project or screenshot is distributed here. The authored-code MIT notice applies only to the independent implementation. Three.js 0.160.0 is an unmodified third-party dependency embedded in index.html; its own MIT notice is included in LICENSE and the inline dependency header. Dependency SHA-256: 170c6789f43217c96b3170f4b42fafe135de7f7cd48497a4218f9757ee1d49fa. No dependency request occurs at runtime. The original source remains acquired/MIT. Its original scene still lacks a complete runnable asset set, including 87 path-specific redistribution gaps retained by the source packet. This original geometric orchard uses no original models, scene arrangement, brands, image textures or withheld assets. Measurements cover one opaque, depth-tested material and one render pass. DOM labels are outside the measured 3D scene. Instancing does not imply that arbitrary different textures and materials become one call. Changing object count or DPR changes workload or image quality. Pixel count is not a measurement of GPU time or a proportional speedup.

## Initial state and controls

An original orchard of geometric columns shares one geometry and one material. Switch the submission method, then change resolution separately. Read what the renderer actually submitted.

The page starts stationary. Play motion, where present, advances this study’s presentation until paused; text, bounce, portrait, orbit, strand and mascot motion loops, while the event composer stops at its endpoint. Scroll studies advance through ordinary document scroll or their chapter buttons. Static view stops time-based motion; manual controls still inspect values. The three scroll studies instead show every chapter in ordinary reading flow. Pointer parallax centers its decorative layers. In this orchard study, Run animation changes the shared transform phase. User pause and visibility suspension are separate; returning to a visible page preserves user pause. Counters describe actual submissions, with DOM labels outside the measured scene.

Initial control values:

| Control key | Value |
| --- | --- |
| method | separate |
| count | 81 |
| dpr | 1 |
| phase | 20 |

## Running and editing

Open index.html directly. It contains all runtime code and visuals and needs no package install, account, network, remote asset or browser-origin storage. Edit its inline style and script to change the downloaded page. styles.css and script.js are reference copies of the inline source; changing those copies alone does not change the running page. Repository regeneration overwrites index.html and all generated copies, including any manual edits. Keep a separate copy when editing a download. The repository authoring modules in vendor/codrops-article-studies/scenes-*.mjs and runtime.mjs regenerate these copies through node scripts/build-codrops-article-studies.mjs. Repository regeneration also needs the private source evidence; downloaded-page execution does not.

## Verification boundary

This generation passed the captured article/analysis hash checks, article-code/paragraph pointer hashes, pinned source/line hashes, record/license/receipt hashes and original runtime snapshot hash, exact ID membership, local canonical Markdown anchor/hash checks, implementation-symbol checks, JavaScript parsing, semantic main/title counts, duplicate-ID checks and runtime URL/storage exclusion. The manifest codeFiles entries identify every emitted file by SHA-256. Each code symbol is a searchable named function, not a claimed executed call trace. Proposed checks are in KNOWLEDGE.json. runtime_verified: false. SG artifact capture proves only a recorded initial render; no interactive runtime, keyboard, accessibility, comfort or performance result is claimed.

Manual Chrome interaction is blocked by extension UI in this session. No alternate browser-control route was used. Preview sizing is native responsive width. Initial-render captures are tracked separately at site/artifacts/full-import/preview-posters/index.json and site/artifacts/full-import/preview-posters/visual-review.json in the repository. No capture receipt is bundled with this download. The bounded initial-render matrix requests all 21 studies at 320 pixels and three representative studies at 1280 pixels; the separate poster surface is 640 × 420. The authored CSS also adapts at 375 and 768 pixels, without claiming those widths were captured. A width request does not mean that capture exists or passed. Motion starts on explicit playback; system reduced motion and the Static view switch stop it.

consumer_reference: consumer-reference/agent-native/registry.json

[
  {
    "id": "codrops-84a920dd7725-article-0",
    "source": "motion/rendering-and-performance.md",
    "anchor": "a-diagnostic-sequence",
    "sourceSha256": "1523fdeaa290fa064c4db17d36040de3f35ad39bb18a37517ceb5995f97d1dfd",
    "title": "21 / Instancing & measured rendering work · renderOrchard",
    "principle": "Change only submission method while keeping camera, matrices, count and material identical; read completed render counters rather than predicted values.",
    "application": "A deterministic array of original column transforms feeds either separate Three.js Mesh objects or one InstancedMesh. A single render reports renderer.info draw calls and triangles, while the drawing buffer reports actual pixel dimensions. Object count, DPR and scheduling are separate controls; no frame-rate or universal speedup claim is made. This binding describes the authored study and does not verify the original project.",
    "code": [
      {
        "file": "vendor/codrops-article-studies/records/codrops-84a920dd7725/script.js",
        "symbol": "renderOrchard",
        "explanation": "The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles."
      }
    ],
    "checks": [
      {
        "id": "codrops-84a920dd7725-renderOrchard",
        "action": "Pause and switch Separate Mesh objects to One InstancedMesh with count 81, then change only DPR.",
        "expected": "Observed draw calls change across modes while submitted triangle count and arrangement agree; DPR changes actual buffer pixels while geometry and draw counts stay stable."
      }
    ],
    "runtime_verified": false
  },
  {
    "id": "codrops-84a920dd7725-article-1",
    "source": "design-engineering/component-contract.md",
    "anchor": "contract-template",
    "sourceSha256": "79e496160e28ab26397d2c5b68075fd14c732d13002ff6c6e41c031d86cac039",
    "title": "21 / Instancing & measured rendering work · scheduleOrchard",
    "principle": "User pause and page visibility are separate scheduling inputs; resuming visibility must not clear a requested pause.",
    "application": "A deterministic array of original column transforms feeds either separate Three.js Mesh objects or one InstancedMesh. A single render reports renderer.info draw calls and triangles, while the drawing buffer reports actual pixel dimensions. Object count, DPR and scheduling are separate controls; no frame-rate or universal speedup claim is made. This binding describes the authored study and does not verify the original project.",
    "code": [
      {
        "file": "vendor/codrops-article-studies/records/codrops-84a920dd7725/script.js",
        "symbol": "scheduleOrchard",
        "explanation": "The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles."
      }
    ],
    "checks": [
      {
        "id": "codrops-84a920dd7725-scheduleOrchard",
        "action": "Pause animation, hide and return to the page, then run it explicitly. Enable Static view during playback.",
        "expected": "A paused scene stays paused on return; explicit playback resumes the frame counter; Static view suspends ongoing motion while visible controls still redraw the current scene."
      }
    ],
    "runtime_verified": false
  },
  {
    "id": "codrops-84a920dd7725-article-2",
    "source": "motion/accessible-motion.md",
    "anchor": "preference-changes-during-work",
    "sourceSha256": "db0ad692d5bb3103a3cbe13ec08dbe5cf12552aed7ecf2c93b1d7cc0b8a34b8b",
    "title": "21 / Instancing & measured rendering work · applyMotionPreference",
    "principle": "One effective preference owns CSS and script playback. The initial view is stationary, and manual controls retain the study values.",
    "application": "A deterministic array of original column transforms feeds either separate Three.js Mesh objects or one InstancedMesh. A single render reports renderer.info draw calls and triangles, while the drawing buffer reports actual pixel dimensions. Object count, DPR and scheduling are separate controls; no frame-rate or universal speedup claim is made. This binding describes the authored study and does not verify the original project.",
    "code": [
      {
        "file": "vendor/codrops-article-studies/records/codrops-84a920dd7725/script.js",
        "symbol": "applyMotionPreference",
        "explanation": "The named local function implements this mechanism in the downloadable standalone page; its source hash is listed in codeFiles."
      }
    ],
    "checks": [
      {
        "id": "codrops-84a920dd7725-applyMotionPreference",
        "action": "Enable Static view during playback, then adjust the visible native controls.",
        "expected": "Playback stops, its button is disabled while the preference applies, and the current values remain inspectable without continuous motion."
      }
    ],
    "runtime_verified": false
  }
]

# Retrieval log

Understood as: preserve all 21 original catalog IDs and acquisition dispositions while independently implementing each article’s technical principle as a consumer-owned case study.

SG discover and workflow read from site-compiler revision 6deb1970c80ed113b90be8d6ca617616bbe336c4; workflow SHA-256 0318a99707293af423e52b99b40cf1d87d9c7725e3ab06c5a231e3946f2bebb9. Stage 3 handoff is the primary implementation brief. No original scene assets or source files are reused.

Read-only canonical traversal:
1. AGENTS.md
2. README.md
3. DOMAINS.md
4. GOVERNANCE.md
5. design-engineering/index.md
6. motion/index.md
7. design-engineering/component-contract.md
8. design-engineering/state-management/patterns/derived-state.md
9. design-engineering/native-interaction-contracts.md
10. motion/accessible-motion.md
11. motion/rendering-and-performance.md
12. motion/interruption-and-retargeting.md
13. motion/interaction-recipes.md

Applied canonical sections and current-authoring hashes are recorded in KNOWLEDGE.json. No design-terminology records are relied on. External references within canonical guidance were not independently rechecked by this implementation lane; only the local sections and article capture identities were checked. Root Layout corpus, Game UI, provider integrations and publisher export claims were rejected as outside this lane.