Spherical.html

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		<h1>球坐标（[name]）</h1>

		<p class="desc">一个点的[link:https://en.wikipedia.org/wiki/Spherical_coordinate_system spherical coordinates]（球坐标）。</p>


		<h2>构造函数</h2>


		<h3>[name]( [param:Float radius], [param:Float phi], [param:Float theta] )</h3>
		<p>
		[page:Float radius] - 半径值，或者说从该点到原点的
		[link:https://en.wikipedia.org/wiki/Euclidean_distance Euclidean distance]（欧几里得距离，即直线距离）。默认值为*1.0*。<br />
		[page:Float phi] - polar angle in radians from the y (up) axis. Default is *0*.<br />
		[page:Float theta] - equator angle in radians around the y (up) axis. Default is *0*.<br /><br />

		The poles (phi) are at the positive and negative y axis. The equator (theta) starts at positive z.
		</p>


		<h2>属性</h2>

		<h3>[property:Float radius]</h3>

		<h3>[property:Float phi]</h3>

		<h3>[property:Float theta]</h3>


		<h2>方法</h2>

		<h3>[method:Spherical clone]()</h3>
		<p>
		返回一个新的球坐标，新的球坐标与该球坐标具有相同的
		[page:.radius radius]、[page:.phi phi]和[page:.theta theta]。
		</p>

		<h3>[method:Spherical copy]( [param:Spherical s] )</h3>
		<p>
		复制所传入的球坐标的[page:.radius radius]、
		[page:.phi phi] 和[page:.theta theta]属性到该球坐标中。
		</p>

		<h3>[method:Spherical makeSafe]()</h3>
		<p>
		将极角 [page:.phi phi] 的值限制在0.000001 和 pi - 0.000001 之间。
		</p>

		<h3>[method:Spherical set]( [param:Float radius], [param:Float phi], [param:Float theta] )</h3>
		<p>设置球坐标中[page:.radius radius]、[page:.phi phi] 和 [page:.theta theta] 属性的值。</p>

		<h3>[method:Spherical setFromVector3]( [param:Vector3 vec3] )</h3>
		<p>
			从[page:Vector3 Vector3]中设置球坐标的[page:.radius radius]、[page:.phi phi]和[page:.theta theta]值。
		</p>

		<h3>[method:Spherical setFromCartesianCoords]( [param:Float x], [param:Float y], [param:Float z] )</h3>
		<p>
			从笛卡尔坐标系中设置球坐标的[page:.radius radius]、[page:.phi phi]和[page:.theta theta]值。
		</p>

		<h2>源代码</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
		</p>
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