76 lines
1.5 KiB
JavaScript
76 lines
1.5 KiB
JavaScript
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import { Curve } from '../core/Curve.js';
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import { QuadraticBezier } from '../core/Interpolations.js';
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import { Vector2 } from '../../math/Vector2.js';
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function QuadraticBezierCurve( v0, v1, v2 ) {
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Curve.call( this );
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this.type = 'QuadraticBezierCurve';
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this.v0 = v0 || new Vector2();
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this.v1 = v1 || new Vector2();
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this.v2 = v2 || new Vector2();
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}
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QuadraticBezierCurve.prototype = Object.create( Curve.prototype );
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QuadraticBezierCurve.prototype.constructor = QuadraticBezierCurve;
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QuadraticBezierCurve.prototype.isQuadraticBezierCurve = true;
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QuadraticBezierCurve.prototype.getPoint = function ( t, optionalTarget ) {
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var point = optionalTarget || new Vector2();
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var v0 = this.v0, v1 = this.v1, v2 = this.v2;
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point.set(
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QuadraticBezier( t, v0.x, v1.x, v2.x ),
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QuadraticBezier( t, v0.y, v1.y, v2.y )
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);
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return point;
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};
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QuadraticBezierCurve.prototype.copy = function ( source ) {
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Curve.prototype.copy.call( this, source );
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this.v0.copy( source.v0 );
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this.v1.copy( source.v1 );
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this.v2.copy( source.v2 );
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return this;
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};
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QuadraticBezierCurve.prototype.toJSON = function () {
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var data = Curve.prototype.toJSON.call( this );
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data.v0 = this.v0.toArray();
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data.v1 = this.v1.toArray();
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data.v2 = this.v2.toArray();
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return data;
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};
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QuadraticBezierCurve.prototype.fromJSON = function ( json ) {
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Curve.prototype.fromJSON.call( this, json );
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this.v0.fromArray( json.v0 );
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this.v1.fromArray( json.v1 );
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this.v2.fromArray( json.v2 );
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return this;
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};
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export { QuadraticBezierCurve };
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