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three.js
-ын хуулбар https://github.com/mrdoob/three.js.git


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="zh">
	<head>
		<meta charset="utf-8" />
		<base href="../../../" />
		<script src="page.js"></script>
		<link type="text/css" rel="stylesheet" href="page.css" />
	</head>
	<body>
		[page:Object3D] &rarr; [page:Mesh] &rarr;

		<h1>蒙皮网格（[name]）</h1>

		<p class="desc">
			具有[page:Skeleton]（骨架）和[page:Bone bones]（骨骼）的网格，可用于给几何体上的顶点添加动画。
		</p>

		<iframe id="scene" src="scenes/bones-browser.html"></iframe>

		<script>

		// iOS iframe auto-resize workaround

		if ( /(iPad|iPhone|iPod)/g.test( navigator.userAgent ) ) {

			const scene = document.getElementById( 'scene' );

			scene.style.width = getComputedStyle( scene ).width;
			scene.style.height = getComputedStyle( scene ).height;
			scene.setAttribute( 'scrolling', 'no' );

		}

		</script>

		<h2>代码示例</h2>

		<code>
		const geometry = new THREE.CylinderGeometry( 5, 5, 5, 5, 15, 5, 30 );

		// create the skin indices and skin weights

		const position = geometry.attributes.position;

		const vertex = new THREE.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 THREE.Uint16BufferAttribute( skinIndices, 4 ) );
		geometry.setAttribute( 'skinWeight', new THREE.Float32BufferAttribute( skinWeights, 4 ) );

		// create skinned mesh and skeleton

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

		// see example from THREE.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;
		</code>

		<h2>构造器</h2>
		<h3>[name]( [param:BufferGeometry geometry], [param:Material material] )</h3>
		<p>
	[page:BufferGeometry geometry] —— 一个[page:BufferGeometry]实例。<br />
	[page:Material material] —— （可选）一个[page:Material]实例，默认值是一个新的[page:MeshBasicMaterial]。
		</p>

		<h2>属性</h2>
		<p>共有属性请参见其基类[page:Mesh]。</p>

		<h3>[property:String bindMode]</h3>
		<p>
			Either `AttachedBindMode` or `DetachedBindMode`. `AttachedBindMode` means the skinned mesh
			shares the same world space as the skeleton. This is not true when using `DetachedBindMode`
			which is useful when sharing a skeleton across multiple skinned meshes.
			Default is `AttachedBindMode`.
		</p>

		<h3>[property:Matrix4 bindMatrix]</h3>
		<p>
			该基础矩阵用于绑定骨骼的变换。
		</p>

		<h3>[property:Matrix4 bindMatrixInverse]</h3>
		<p>
			该基础矩阵用于重置绑定骨骼的变换。
		</p>

		<h3>[property:Box3 boundingBox]</h3>
		<p>
			The bounding box of the [name]. Can be calculated with [page:.computeBoundingBox](). Default is `null`.
		</p>

		<h3>[property:Sphere boundingSphere]</h3>
		<p>
			The bounding sphere of the [name]. Can be calculated with [page:.computeBoundingSphere](). Default is `null`.
		</p>

		<h3>[property:Boolean isSkinnedMesh]</h3>
		<p>
			Read-only flag to check if a given object is of type [name].
		</p>

		<h3>[property:Skeleton skeleton]</h3>
		<p>
			用于表示蒙皮网格中骨骼的层次结构的[page:Skeleton]（骨架）。
		</p>

		<h2>方法</h2>
		<p>共有方法请参见其基类[page:Mesh]。</p>

		<h3>[method:Vector3 applyBoneTransform]( [param:Integer index], [param:Vector3 vector] )</h3>
		<p>
		Applies the bone transform associated with the given index to the given position vector. Returns the updated vector.
		</p>

		<h3>[method:undefined bind]( [param:Skeleton skeleton], [param:Matrix4 bindMatrix] )</h3>
		<p>
		[page:Skeleton skeleton] —— 由一棵[page:Bone Bones]树创建的[page:Skeleton]。<br/>
		[page:Matrix4 bindMatrix] —— 表示骨架基本变换的[page:Matrix4]（4x4矩阵）。<br /><br />
		将骨架绑定到一个蒙皮网格上。bindMatrix会被保存到.bindMatrix属性中，其逆矩阵.bindMatrixInverse也会被计算出来。
		</p>

		<h3>[method:SkinnedMesh clone]()</h3>
		<p>
		This method does currently not clone an instance of [name] correctly. Please use [page:SkeletonUtils.clone]() in the meanwhile.
		</p>

		<h3>[method:undefined computeBoundingBox]()</h3>
		<p>
		Computes the bounding box, updating [page:.boundingBox] attribute.<br />
		Bounding boxes aren't computed by default. They need to be explicitly computed, otherwise they are `null`.
		If an instance of [name] is animated, this method should be called per frame to compute a correct bounding box.
		</p>

		<h3>[method:undefined computeBoundingSphere]()</h3>
		<p>
		Computes the bounding sphere, updating [page:.boundingSphere] attribute.<br />
		Bounding spheres aren't computed by default. They need to be explicitly computed, otherwise they are `null`.
		If an instance of [name] is animated, this method should be called per frame to compute a correct bounding sphere.
		</p>

		<h3>[method:undefined normalizeSkinWeights]()</h3>
		<p>
		标准化蒙皮的权重。
		</p>

		<h3>[method:undefined pose]()</h3>
		<p>
		这个方法设置了在“休息”状态下蒙皮网格的姿势（重置姿势）。
		</p>

		<h2>源代码</h2>
		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
	</body>
</html>