Object3D → Mesh →

蒙皮网格（SkinnedMesh）

具有Skeleton（骨架）和bones（骨骼）的网格，可用于给几何体上的顶点添加动画。其材质必须支持蒙皮，并且已经启用了蒙皮 —— 请阅读MeshStandardMaterial.skinning。

代码示例


    const geometry = new v3d.CylinderBufferGeometry(5, 5, 5, 5, 15, 5, 30);

    // create the skin indices and skin weights

    const position = geometry.attributes.position;

    const vertex = new v3d.Vector3();

    const skinIndices = [];
    const skinWeights = [];

    for (let i = 0; i < position.count; i++) {

      vertex.fromBufferAttribute(position, i);

      // compute skinIndex and skinWeight based on some configuration data

      const y = (vertex.y + sizing.halfHeight);

      const skinIndex = Math.floor(y / sizing.segmentHeight);
      const skinWeight = (y % sizing.segmentHeight) / sizing.segmentHeight;

      skinIndices.push(skinIndex, skinIndex + 1, 0, 0);
      skinWeights.push(1 - skinWeight, skinWeight, 0, 0);

    }

    geometry.setAttribute('skinIndex', new v3d.Uint16BufferAttribute(skinIndices, 4));
    geometry.setAttribute('skinWeight', new v3d.Float32BufferAttribute(skinWeights, 4));

    // create skinned mesh and skeleton

    const mesh = new v3d.SkinnedMesh(geometry, material);
    const skeleton = new v3d.Skeleton(bones);

    // see example from v3d.Skeleton

    const rootBone = skeleton.bones[0];
    mesh.add(rootBone);

    // bind the skeleton to the mesh

    mesh.bind(skeleton);

    // move the bones and manipulate the model

    skeleton.bones[0].rotation.x = -0.1;
    skeleton.bones[1].rotation.x = 0.2;