From 9845e6a9a661476a5a3542690f85567878074a05 Mon Sep 17 00:00:00 2001
From: Diego Marcos Segura <diego.marcos@gmail.com>
Date: Tue, 27 May 2025 08:47:28 -0700
Subject: [PATCH] Remove animation skinning until the feature is more mature

---
 examples/animation-skinning/index.html | 105 -------------------------
 index.html                             |   1 -
 2 files changed, 106 deletions(-)
 delete mode 100644 examples/animation-skinning/index.html

diff --git a/examples/animation-skinning/index.html b/examples/animation-skinning/index.html
deleted file mode 100644
index 5659851..0000000
--- a/examples/animation-skinning/index.html
+++ /dev/null
@@ -1,105 +0,0 @@
-<!DOCTYPE html>
-<head>
-  <meta charset="utf-8">
-  <title>Forge • Animation • Skinning</title>
-  <style> body {margin: 0;} </style>
-</head>
-<body>
-  <script type="importmap">
-    {
-      "imports": {
-        "three": "/examples/js/vendor/three/build/three.module.js",
-        "@forge-gfx/forge": "/dist/forge.module.js"
-      }
-    }
-  </script>
-  <script type="module">
-    import * as THREE from "three";
-    import { SplatMesh, SplatSkinning } from "@forge-gfx/forge";
-    import { getAssetFileURL } from "/examples/js/get-asset-url.js";
-
-    const scene = new THREE.Scene();
-    const camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 0.1, 1000);
-    const renderer = new THREE.WebGLRenderer();
-    renderer.setSize(window.innerWidth, window.innerHeight);
-    document.body.appendChild(renderer.domElement)
-
-    function gridToBoneIndex(x, y) {
-      return 15 * (y + 7) + (x + 7);
-    }
-
-    const splatURL = await getAssetFileURL("butterfly.spz");
-    const butterfly = new SplatMesh({
-      url: splatURL,
-      onLoad: (mesh) => {
-        // Make a 15x15 uniform grid of bones on the XY plane
-        const skinning = new SplatSkinning({ mesh, numBones: 15 * 15 });
-        const position = new THREE.Vector3();
-        const quaternion = new THREE.Quaternion();
-        for (let y = -7; y <= 7; y++) {
-          for (let x = -7; x <= 7; x++) {
-            position.set(x * 0.05, y * 0.05, 0);
-            skinning.setRestQuatPos(gridToBoneIndex(x, y), quaternion, position);
-          }
-        }
-
-        // Compute bone indices and weights for each Gsplat such that
-        // it uses the 4 nearest bones in a bilinear manner.
-        const boneIndices = new THREE.Vector4();
-        const weights = new THREE.Vector4();
-        mesh.forEachSplat((index, center) => {
-          const x = center.y / 0.05;
-          const y = center.x / 0.05;
-          const gridX = Math.max(-7, Math.min(6, Math.floor(x)));
-          const gridY = Math.max(-7, Math.min(6, Math.floor(y)));
-          const fractX = Math.max(0, Math.min(1, x - gridX));
-          const fractY = Math.max(0, Math.min(1, y - gridY));
-          boneIndices.set(
-            gridToBoneIndex(gridX, gridY),
-            gridToBoneIndex(gridX + 1, gridY),
-            gridToBoneIndex(gridX, gridY + 1),
-            gridToBoneIndex(gridX + 1, gridY + 1),
-          );
-          weights.set(
-            (1 - fractX) * (1 - fractY),
-            fractX * (1 - fractY),
-            (1 - fractX) * fractY,
-            fractX * fractY,
-          );
-          skinning.setSplatBones(index, boneIndices, weights);
-        });
-
-        mesh.skinning = skinning;
-        mesh.updateGenerator();
-      },
-    });
-    butterfly.quaternion.set(1, 0, 0, 0);
-    butterfly.position.set(0, 0, -1);
-    scene.add(butterfly);
-
-    renderer.setAnimationLoop(function animate(time) {
-      renderer.render(scene, camera);
-      if (butterfly.skinning) {
-        // Making sure async loading and initialization is complete
-        const position = new THREE.Vector3();
-        const quaternion = new THREE.Quaternion();
-        for (let y = -7; y <= 7; y++) {
-          for (let x = -7; x <= 7; x++) {
-            position.set(x * 0.05, y * 0.05, 0);
-            // Rotate Gsplats to flap the wings
-            quaternion.setFromEuler(
-              new THREE.Euler(
-                x * 0.09 * Math.sin(time * 0.0011),
-                y * 0.05 * Math.cos(time * 0.0071),
-                0.2 * Math.sin(time * 0.0011),
-              ),
-            );
-            butterfly.skinning.setBoneQuatPos(gridToBoneIndex(x, y), quaternion, position);
-          }
-        }
-        butterfly.skinning.updateBones();
-      }
-    });
-  </script>
-</body>
-</html>
diff --git a/index.html b/index.html
index e205e39..34158cf 100644
--- a/index.html
+++ b/index.html
@@ -132,7 +132,6 @@
     <h2>Examples</h2>
 
     <ul class="links">
-        <li><a href="/examples/animation-skinning/">Animation Skinning</a></li>
         <li><a href="/examples/envmap/">Environment Map</a></li>
         <li><a href="/examples/hello-world/">Hello World</a></li>
         <li><a href="/examples/interactivity/">Interactivity</a></li>