66 lines
1.1 KiB
JavaScript
66 lines
1.1 KiB
JavaScript
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/**
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* @author Mugen87 / https://github.com/Mugen87
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*
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* Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
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*
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*/
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function Cylindrical( radius, theta, y ) {
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this.radius = ( radius !== undefined ) ? radius : 1.0; // distance from the origin to a point in the x-z plane
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this.theta = ( theta !== undefined ) ? theta : 0; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
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this.y = ( y !== undefined ) ? y : 0; // height above the x-z plane
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return this;
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}
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Object.assign( Cylindrical.prototype, {
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set: function ( radius, theta, y ) {
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this.radius = radius;
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this.theta = theta;
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this.y = y;
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return this;
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},
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clone: function () {
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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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this.radius = other.radius;
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this.theta = other.theta;
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this.y = other.y;
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return this;
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},
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setFromVector3: function ( v ) {
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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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this.radius = Math.sqrt( x * x + z * z );
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this.theta = Math.atan2( x, z );
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this.y = y;
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return this;
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}
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} );
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export { Cylindrical };
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