Spaces:
Running
Running
File size: 1,609 Bytes
6cd9596 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 |
import { _Math } from './Math.js';
/**
* @author bhouston / http://clara.io
* @author WestLangley / http://github.com/WestLangley
*
* Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
*
* The polar angle (phi) is measured from the positive y-axis. The positive y-axis is up.
* The azimuthal angle (theta) is measured from the positive z-axiz.
*/
function Spherical( radius, phi, theta ) {
this.radius = ( radius !== undefined ) ? radius : 1.0;
this.phi = ( phi !== undefined ) ? phi : 0; // polar angle
this.theta = ( theta !== undefined ) ? theta : 0; // azimuthal angle
return this;
}
Object.assign( Spherical.prototype, {
set: function ( radius, phi, theta ) {
this.radius = radius;
this.phi = phi;
this.theta = theta;
return this;
},
clone: function () {
return new this.constructor().copy( this );
},
copy: function ( other ) {
this.radius = other.radius;
this.phi = other.phi;
this.theta = other.theta;
return this;
},
// restrict phi to be betwee EPS and PI-EPS
makeSafe: function () {
var EPS = 0.000001;
this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );
return this;
},
setFromVector3: function ( v ) {
return this.setFromCartesianCoords( v.x, v.y, v.z );
},
setFromCartesianCoords: function ( x, y, z ) {
this.radius = Math.sqrt( x * x + y * y + z * z );
if ( this.radius === 0 ) {
this.theta = 0;
this.phi = 0;
} else {
this.theta = Math.atan2( x, z );
this.phi = Math.acos( _Math.clamp( y / this.radius, - 1, 1 ) );
}
return this;
}
} );
export { Spherical };
|