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108 lines
2.2 KiB
C#
108 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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/**
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* @author bhouston / http://clara.io
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* @author WestLangley / http://github.com/WestLangley
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*
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* Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
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*
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* The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
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* The azimuthal angle (theta) is measured from the positive z-axiz.
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*/
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namespace THREE
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{
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/// <summary>
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/// @author bhouston / http://clara.io
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/// @author WestLangley / http://github.com/WestLangley
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/// </summary>
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public class Spherical
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{
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function Spherical(radius, phi, theta )
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{
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this.radius = (radius !== undefined) ? radius : 1.0;
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this.phi = (phi !== undefined) ? phi : 0; // polar angle
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this.theta = (theta !== undefined) ? theta : 0; // azimuthal angle
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return this;
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}
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set: function(radius, phi, theta )
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{
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this.radius = radius;
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this.phi = phi;
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this.theta = theta;
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return this;
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},
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clone: function()
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{
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return new this.constructor().copy(this);
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},
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copy: function(other )
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{
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this.radius = other.radius;
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this.phi = other.phi;
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this.theta = other.theta;
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return this;
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},
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// restrict phi to be betwee EPS and PI-EPS
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makeSafe: function()
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{
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var EPS = 0.000001;
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this.phi = Math.max(EPS, Math.min(Math.PI - EPS, this.phi));
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return this;
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},
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setFromVector3: function(v )
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{
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return this.setFromCartesianCoords(v.x, v.y, v.z);
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},
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setFromCartesianCoords: function(x, y, z )
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{
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this.radius = Math.sqrt(x * x + y * y + z * z);
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if (this.radius === 0)
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{
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this.theta = 0;
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this.phi = 0;
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}
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else
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{
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this.theta = Math.atan2(x, z);
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this.phi = Math.acos(_Math.clamp(y / this.radius, -1, 1));
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}
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return this;
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}
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}
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}
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