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site/game/node_modules/three/src/extras/curves/ArcCurve.js

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+import { EllipseCurve } from './EllipseCurve.js';
+
+class ArcCurve extends EllipseCurve {
+
+	constructor( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
+
+		super( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
+
+		this.isArcCurve = true;
+
+		this.type = 'ArcCurve';
+
+	}
+
+}
+
+export { ArcCurve };

site/game/node_modules/three/src/extras/curves/CatmullRomCurve3.js

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+import { Vector3 } from '../../math/Vector3.js';
+import { Curve } from '../core/Curve.js';
+
+/**
+ * Centripetal CatmullRom Curve - which is useful for avoiding
+ * cusps and self-intersections in non-uniform catmull rom curves.
+ * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
+ *
+ * curve.type accepts centripetal(default), chordal and catmullrom
+ * curve.tension is used for catmullrom which defaults to 0.5
+ */
+
+
+/*
+Based on an optimized c++ solution in
+ - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
+ - http://ideone.com/NoEbVM
+
+This CubicPoly class could be used for reusing some variables and calculations,
+but for three.js curve use, it could be possible inlined and flatten into a single function call
+which can be placed in CurveUtils.
+*/
+
+function CubicPoly() {
+
+	let c0 = 0, c1 = 0, c2 = 0, c3 = 0;
+
+	/*
+	 * Compute coefficients for a cubic polynomial
+	 *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3
+	 * such that
+	 *   p(0) = x0, p(1) = x1
+	 *  and
+	 *   p'(0) = t0, p'(1) = t1.
+	 */
+	function init( x0, x1, t0, t1 ) {
+
+		c0 = x0;
+		c1 = t0;
+		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
+		c3 = 2 * x0 - 2 * x1 + t0 + t1;
+
+	}
+
+	return {
+
+		initCatmullRom: function ( x0, x1, x2, x3, tension ) {
+
+			init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );
+
+		},
+
+		initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {
+
+			// compute tangents when parameterized in [t1,t2]
+			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
+			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;
+
+			// rescale tangents for parametrization in [0,1]
+			t1 *= dt1;
+			t2 *= dt1;
+
+			init( x1, x2, t1, t2 );
+
+		},
+
+		calc: function ( t ) {
+
+			const t2 = t * t;
+			const t3 = t2 * t;
+			return c0 + c1 * t + c2 * t2 + c3 * t3;
+
+		}
+
+	};
+
+}
+
+//
+
+const tmp = /*@__PURE__*/ new Vector3();
+const px = /*@__PURE__*/ new CubicPoly();
+const py = /*@__PURE__*/ new CubicPoly();
+const pz = /*@__PURE__*/ new CubicPoly();
+
+class CatmullRomCurve3 extends Curve {
+
+	constructor( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {
+
+		super();
+
+		this.isCatmullRomCurve3 = true;
+
+		this.type = 'CatmullRomCurve3';
+
+		this.points = points;
+		this.closed = closed;
+		this.curveType = curveType;
+		this.tension = tension;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		const points = this.points;
+		const l = points.length;
+
+		const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
+		let intPoint = Math.floor( p );
+		let weight = p - intPoint;
+
+		if ( this.closed ) {
+
+			intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;
+
+		} else if ( weight === 0 && intPoint === l - 1 ) {
+
+			intPoint = l - 2;
+			weight = 1;
+
+		}
+
+		let p0, p3; // 4 points (p1 & p2 defined below)
+
+		if ( this.closed || intPoint > 0 ) {
+
+			p0 = points[ ( intPoint - 1 ) % l ];
+
+		} else {
+
+			// extrapolate first point
+			tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
+			p0 = tmp;
+
+		}
+
+		const p1 = points[ intPoint % l ];
+		const p2 = points[ ( intPoint + 1 ) % l ];
+
+		if ( this.closed || intPoint + 2 < l ) {
+
+			p3 = points[ ( intPoint + 2 ) % l ];
+
+		} else {
+
+			// extrapolate last point
+			tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
+			p3 = tmp;
+
+		}
+
+		if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {
+
+			// init Centripetal / Chordal Catmull-Rom
+			const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
+			let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
+			let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
+			let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );
+
+			// safety check for repeated points
+			if ( dt1 < 1e-4 ) dt1 = 1.0;
+			if ( dt0 < 1e-4 ) dt0 = dt1;
+			if ( dt2 < 1e-4 ) dt2 = dt1;
+
+			px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
+			py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
+			pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );
+
+		} else if ( this.curveType === 'catmullrom' ) {
+
+			px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
+			py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
+			pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );
+
+		}
+
+		point.set(
+			px.calc( weight ),
+			py.calc( weight ),
+			pz.calc( weight )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.points = [];
+
+		for ( let i = 0, l = source.points.length; i < l; i ++ ) {
+
+			const point = source.points[ i ];
+
+			this.points.push( point.clone() );
+
+		}
+
+		this.closed = source.closed;
+		this.curveType = source.curveType;
+		this.tension = source.tension;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.points = [];
+
+		for ( let i = 0, l = this.points.length; i < l; i ++ ) {
+
+			const point = this.points[ i ];
+			data.points.push( point.toArray() );
+
+		}
+
+		data.closed = this.closed;
+		data.curveType = this.curveType;
+		data.tension = this.tension;
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.points = [];
+
+		for ( let i = 0, l = json.points.length; i < l; i ++ ) {
+
+			const point = json.points[ i ];
+			this.points.push( new Vector3().fromArray( point ) );
+
+		}
+
+		this.closed = json.closed;
+		this.curveType = json.curveType;
+		this.tension = json.tension;
+
+		return this;
+
+	}
+
+}
+
+export { CatmullRomCurve3 };

site/game/node_modules/three/src/extras/curves/CubicBezierCurve.js

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+import { Curve } from '../core/Curve.js';
+import { CubicBezier } from '../core/Interpolations.js';
+import { Vector2 } from '../../math/Vector2.js';
+
+class CubicBezierCurve extends Curve {
+
+	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {
+
+		super();
+
+		this.isCubicBezierCurve = true;
+
+		this.type = 'CubicBezierCurve';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+		this.v3 = v3;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
+
+		point.set(
+			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
+			CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+		this.v3.copy( source.v3 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+		data.v3 = this.v3.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+		this.v3.fromArray( json.v3 );
+
+		return this;
+
+	}
+
+}
+
+export { CubicBezierCurve };

site/game/node_modules/three/src/extras/curves/CubicBezierCurve3.js

@@ -0,0 +1,79 @@
+import { Curve } from '../core/Curve.js';
+import { CubicBezier } from '../core/Interpolations.js';
+import { Vector3 } from '../../math/Vector3.js';
+
+class CubicBezierCurve3 extends Curve {
+
+	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {
+
+		super();
+
+		this.isCubicBezierCurve3 = true;
+
+		this.type = 'CubicBezierCurve3';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+		this.v3 = v3;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
+
+		point.set(
+			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
+			CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
+			CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+		this.v3.copy( source.v3 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+		data.v3 = this.v3.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+		this.v3.fromArray( json.v3 );
+
+		return this;
+
+	}
+
+}
+
+export { CubicBezierCurve3 };

site/game/node_modules/three/src/extras/curves/Curves.js

@@ -0,0 +1,10 @@
+export { ArcCurve } from './ArcCurve.js';
+export { CatmullRomCurve3 } from './CatmullRomCurve3.js';
+export { CubicBezierCurve } from './CubicBezierCurve.js';
+export { CubicBezierCurve3 } from './CubicBezierCurve3.js';
+export { EllipseCurve } from './EllipseCurve.js';
+export { LineCurve } from './LineCurve.js';
+export { LineCurve3 } from './LineCurve3.js';
+export { QuadraticBezierCurve } from './QuadraticBezierCurve.js';
+export { QuadraticBezierCurve3 } from './QuadraticBezierCurve3.js';
+export { SplineCurve } from './SplineCurve.js';

site/game/node_modules/three/src/extras/curves/EllipseCurve.js

@@ -0,0 +1,156 @@
+import { Curve } from '../core/Curve.js';
+import { Vector2 } from '../../math/Vector2.js';
+
+class EllipseCurve extends Curve {
+
+	constructor( aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0 ) {
+
+		super();
+
+		this.isEllipseCurve = true;
+
+		this.type = 'EllipseCurve';
+
+		this.aX = aX;
+		this.aY = aY;
+
+		this.xRadius = xRadius;
+		this.yRadius = yRadius;
+
+		this.aStartAngle = aStartAngle;
+		this.aEndAngle = aEndAngle;
+
+		this.aClockwise = aClockwise;
+
+		this.aRotation = aRotation;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const twoPi = Math.PI * 2;
+		let deltaAngle = this.aEndAngle - this.aStartAngle;
+		const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;
+
+		// ensures that deltaAngle is 0 .. 2 PI
+		while ( deltaAngle < 0 ) deltaAngle += twoPi;
+		while ( deltaAngle > twoPi ) deltaAngle -= twoPi;
+
+		if ( deltaAngle < Number.EPSILON ) {
+
+			if ( samePoints ) {
+
+				deltaAngle = 0;
+
+			} else {
+
+				deltaAngle = twoPi;
+
+			}
+
+		}
+
+		if ( this.aClockwise === true && ! samePoints ) {
+
+			if ( deltaAngle === twoPi ) {
+
+				deltaAngle = - twoPi;
+
+			} else {
+
+				deltaAngle = deltaAngle - twoPi;
+
+			}
+
+		}
+
+		const angle = this.aStartAngle + t * deltaAngle;
+		let x = this.aX + this.xRadius * Math.cos( angle );
+		let y = this.aY + this.yRadius * Math.sin( angle );
+
+		if ( this.aRotation !== 0 ) {
+
+			const cos = Math.cos( this.aRotation );
+			const sin = Math.sin( this.aRotation );
+
+			const tx = x - this.aX;
+			const ty = y - this.aY;
+
+			// Rotate the point about the center of the ellipse.
+			x = tx * cos - ty * sin + this.aX;
+			y = tx * sin + ty * cos + this.aY;
+
+		}
+
+		return point.set( x, y );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.aX = source.aX;
+		this.aY = source.aY;
+
+		this.xRadius = source.xRadius;
+		this.yRadius = source.yRadius;
+
+		this.aStartAngle = source.aStartAngle;
+		this.aEndAngle = source.aEndAngle;
+
+		this.aClockwise = source.aClockwise;
+
+		this.aRotation = source.aRotation;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.aX = this.aX;
+		data.aY = this.aY;
+
+		data.xRadius = this.xRadius;
+		data.yRadius = this.yRadius;
+
+		data.aStartAngle = this.aStartAngle;
+		data.aEndAngle = this.aEndAngle;
+
+		data.aClockwise = this.aClockwise;
+
+		data.aRotation = this.aRotation;
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.aX = json.aX;
+		this.aY = json.aY;
+
+		this.xRadius = json.xRadius;
+		this.yRadius = json.yRadius;
+
+		this.aStartAngle = json.aStartAngle;
+		this.aEndAngle = json.aEndAngle;
+
+		this.aClockwise = json.aClockwise;
+
+		this.aRotation = json.aRotation;
+
+		return this;
+
+	}
+
+}
+
+export { EllipseCurve };

site/game/node_modules/three/src/extras/curves/LineCurve.js

@@ -0,0 +1,92 @@
+import { Vector2 } from '../../math/Vector2.js';
+import { Curve } from '../core/Curve.js';
+
+class LineCurve extends Curve {
+
+	constructor( v1 = new Vector2(), v2 = new Vector2() ) {
+
+		super();
+
+		this.isLineCurve = true;
+
+		this.type = 'LineCurve';
+
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		if ( t === 1 ) {
+
+			point.copy( this.v2 );
+
+		} else {
+
+			point.copy( this.v2 ).sub( this.v1 );
+			point.multiplyScalar( t ).add( this.v1 );
+
+		}
+
+		return point;
+
+	}
+
+	// Line curve is linear, so we can overwrite default getPointAt
+	getPointAt( u, optionalTarget ) {
+
+		return this.getPoint( u, optionalTarget );
+
+	}
+
+	getTangent( t, optionalTarget = new Vector2() ) {
+
+		return optionalTarget.subVectors( this.v2, this.v1 ).normalize();
+
+	}
+
+	getTangentAt( u, optionalTarget ) {
+
+		return this.getTangent( u, optionalTarget );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+export { LineCurve };

site/game/node_modules/three/src/extras/curves/LineCurve3.js

@@ -0,0 +1,92 @@
+import { Vector3 } from '../../math/Vector3.js';
+import { Curve } from '../core/Curve.js';
+
+class LineCurve3 extends Curve {
+
+	constructor( v1 = new Vector3(), v2 = new Vector3() ) {
+
+		super();
+
+		this.isLineCurve3 = true;
+
+		this.type = 'LineCurve3';
+
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		if ( t === 1 ) {
+
+			point.copy( this.v2 );
+
+		} else {
+
+			point.copy( this.v2 ).sub( this.v1 );
+			point.multiplyScalar( t ).add( this.v1 );
+
+		}
+
+		return point;
+
+	}
+
+	// Line curve is linear, so we can overwrite default getPointAt
+	getPointAt( u, optionalTarget ) {
+
+		return this.getPoint( u, optionalTarget );
+
+	}
+
+	getTangent( t, optionalTarget = new Vector3() ) {
+
+		return optionalTarget.subVectors( this.v2, this.v1 ).normalize();
+
+	}
+
+	getTangentAt( u, optionalTarget ) {
+
+		return this.getTangent( u, optionalTarget );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+export { LineCurve3 };

site/game/node_modules/three/src/extras/curves/QuadraticBezierCurve.js

@@ -0,0 +1,74 @@
+import { Curve } from '../core/Curve.js';
+import { QuadraticBezier } from '../core/Interpolations.js';
+import { Vector2 } from '../../math/Vector2.js';
+
+class QuadraticBezierCurve extends Curve {
+
+	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {
+
+		super();
+
+		this.isQuadraticBezierCurve = true;
+
+		this.type = 'QuadraticBezierCurve';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2;
+
+		point.set(
+			QuadraticBezier( t, v0.x, v1.x, v2.x ),
+			QuadraticBezier( t, v0.y, v1.y, v2.y )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+export { QuadraticBezierCurve };

site/game/node_modules/three/src/extras/curves/QuadraticBezierCurve3.js

@@ -0,0 +1,75 @@
+import { Curve } from '../core/Curve.js';
+import { QuadraticBezier } from '../core/Interpolations.js';
+import { Vector3 } from '../../math/Vector3.js';
+
+class QuadraticBezierCurve3 extends Curve {
+
+	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {
+
+		super();
+
+		this.isQuadraticBezierCurve3 = true;
+
+		this.type = 'QuadraticBezierCurve3';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2;
+
+		point.set(
+			QuadraticBezier( t, v0.x, v1.x, v2.x ),
+			QuadraticBezier( t, v0.y, v1.y, v2.y ),
+			QuadraticBezier( t, v0.z, v1.z, v2.z )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+export { QuadraticBezierCurve3 };

site/game/node_modules/three/src/extras/curves/SplineCurve.js

@@ -0,0 +1,97 @@
+import { Curve } from '../core/Curve.js';
+import { CatmullRom } from '../core/Interpolations.js';
+import { Vector2 } from '../../math/Vector2.js';
+
+class SplineCurve extends Curve {
+
+	constructor( points = [] ) {
+
+		super();
+
+		this.isSplineCurve = true;
+
+		this.type = 'SplineCurve';
+
+		this.points = points;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const points = this.points;
+		const p = ( points.length - 1 ) * t;
+
+		const intPoint = Math.floor( p );
+		const weight = p - intPoint;
+
+		const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
+		const p1 = points[ intPoint ];
+		const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
+		const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];
+
+		point.set(
+			CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
+			CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.points = [];
+
+		for ( let i = 0, l = source.points.length; i < l; i ++ ) {
+
+			const point = source.points[ i ];
+
+			this.points.push( point.clone() );
+
+		}
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.points = [];
+
+		for ( let i = 0, l = this.points.length; i < l; i ++ ) {
+
+			const point = this.points[ i ];
+			data.points.push( point.toArray() );
+
+		}
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.points = [];
+
+		for ( let i = 0, l = json.points.length; i < l; i ++ ) {
+
+			const point = json.points[ i ];
+			this.points.push( new Vector2().fromArray( point ) );
+
+		}
+
+		return this;
+
+	}
+
+}
+
+export { SplineCurve };