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site/game/node_modules/three/src/math/Line3.js

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+import { Vector3 } from './Vector3.js';
+import * as MathUtils from './MathUtils.js';
+
+const _startP = /*@__PURE__*/ new Vector3();
+const _startEnd = /*@__PURE__*/ new Vector3();
+
+class Line3 {
+
+	constructor( start = new Vector3(), end = new Vector3() ) {
+
+		this.start = start;
+		this.end = end;
+
+	}
+
+	set( start, end ) {
+
+		this.start.copy( start );
+		this.end.copy( end );
+
+		return this;
+
+	}
+
+	copy( line ) {
+
+		this.start.copy( line.start );
+		this.end.copy( line.end );
+
+		return this;
+
+	}
+
+	getCenter( target ) {
+
+		return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
+
+	}
+
+	delta( target ) {
+
+		return target.subVectors( this.end, this.start );
+
+	}
+
+	distanceSq() {
+
+		return this.start.distanceToSquared( this.end );
+
+	}
+
+	distance() {
+
+		return this.start.distanceTo( this.end );
+
+	}
+
+	at( t, target ) {
+
+		return this.delta( target ).multiplyScalar( t ).add( this.start );
+
+	}
+
+	closestPointToPointParameter( point, clampToLine ) {
+
+		_startP.subVectors( point, this.start );
+		_startEnd.subVectors( this.end, this.start );
+
+		const startEnd2 = _startEnd.dot( _startEnd );
+		const startEnd_startP = _startEnd.dot( _startP );
+
+		let t = startEnd_startP / startEnd2;
+
+		if ( clampToLine ) {
+
+			t = MathUtils.clamp( t, 0, 1 );
+
+		}
+
+		return t;
+
+	}
+
+	closestPointToPoint( point, clampToLine, target ) {
+
+		const t = this.closestPointToPointParameter( point, clampToLine );
+
+		return this.delta( target ).multiplyScalar( t ).add( this.start );
+
+	}
+
+	applyMatrix4( matrix ) {
+
+		this.start.applyMatrix4( matrix );
+		this.end.applyMatrix4( matrix );
+
+		return this;
+
+	}
+
+	equals( line ) {
+
+		return line.start.equals( this.start ) && line.end.equals( this.end );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+export { Line3 };