/** * @author mrdoob / http://mrdoob.com/ * @author philogb / http://blog.thejit.org/ * @author egraether / http://egraether.com/ * @author zz85 / http://www.lab4games.net/zz85/blog */ function Vector2( x, y ) { this.x = x || 0; this.y = y || 0; } Object.defineProperties( Vector2.prototype, { "width": { get: function () { return this.x; }, set: function ( value ) { this.x = value; } }, "height": { get: function () { return this.y; }, set: function ( value ) { this.y = value; } } } ); Object.assign( Vector2.prototype, { isVector2: true, set: function ( x, y ) { this.x = x; this.y = y; return this; }, setScalar: function ( scalar ) { this.x = scalar; this.y = scalar; return this; }, setX: function ( x ) { this.x = x; return this; }, setY: function ( y ) { this.y = y; return this; }, setComponent: function ( index, value ) { switch ( index ) { case 0: this.x = value; break; case 1: this.y = value; break; default: throw new Error( 'index is out of range: ' + index ); } return this; }, getComponent: function ( index ) { switch ( index ) { case 0: return this.x; case 1: return this.y; default: throw new Error( 'index is out of range: ' + index ); } }, clone: function () { return new this.constructor( this.x, this.y ); }, copy: function ( v ) { this.x = v.x; this.y = v.y; return this; }, add: function ( v, w ) { if ( w !== undefined ) { console.warn( 'THREE.Vector2: .add() now only accepts one argument. Use .addVectors( a, b ) instead.' ); return this.addVectors( v, w ); } this.x += v.x; this.y += v.y; return this; }, addScalar: function ( s ) { this.x += s; this.y += s; return this; }, addVectors: function ( a, b ) { this.x = a.x + b.x; this.y = a.y + b.y; return this; }, addScaledVector: function ( v, s ) { this.x += v.x * s; this.y += v.y * s; return this; }, sub: function ( v, w ) { if ( w !== undefined ) { console.warn( 'THREE.Vector2: .sub() now only accepts one argument. Use .subVectors( a, b ) instead.' ); return this.subVectors( v, w ); } this.x -= v.x; this.y -= v.y; return this; }, subScalar: function ( s ) { this.x -= s; this.y -= s; return this; }, subVectors: function ( a, b ) { this.x = a.x - b.x; this.y = a.y - b.y; return this; }, multiply: function ( v ) { this.x *= v.x; this.y *= v.y; return this; }, multiplyScalar: function ( scalar ) { this.x *= scalar; this.y *= scalar; return this; }, divide: function ( v ) { this.x /= v.x; this.y /= v.y; return this; }, divideScalar: function ( scalar ) { return this.multiplyScalar( 1 / scalar ); }, applyMatrix3: function ( m ) { var x = this.x, y = this.y; var e = m.elements; this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ]; this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ]; return this; }, min: function ( v ) { this.x = Math.min( this.x, v.x ); this.y = Math.min( this.y, v.y ); return this; }, max: function ( v ) { this.x = Math.max( this.x, v.x ); this.y = Math.max( this.y, v.y ); return this; }, clamp: function ( min, max ) { // assumes min < max, componentwise this.x = Math.max( min.x, Math.min( max.x, this.x ) ); this.y = Math.max( min.y, Math.min( max.y, this.y ) ); return this; }, clampScalar: function () { var min = new Vector2(); var max = new Vector2(); return function clampScalar( minVal, maxVal ) { min.set( minVal, minVal ); max.set( maxVal, maxVal ); return this.clamp( min, max ); }; }(), clampLength: function ( min, max ) { var length = this.length(); return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) ); }, floor: function () { this.x = Math.floor( this.x ); this.y = Math.floor( this.y ); return this; }, ceil: function () { this.x = Math.ceil( this.x ); this.y = Math.ceil( this.y ); return this; }, round: function () { this.x = Math.round( this.x ); this.y = Math.round( this.y ); return this; }, roundToZero: function () { this.x = ( this.x < 0 ) ? Math.ceil( this.x ) : Math.floor( this.x ); this.y = ( this.y < 0 ) ? Math.ceil( this.y ) : Math.floor( this.y ); return this; }, negate: function () { this.x = - this.x; this.y = - this.y; return this; }, dot: function ( v ) { return this.x * v.x + this.y * v.y; }, cross: function ( v ) { return this.x * v.y - this.y * v.x; }, lengthSq: function () { return this.x * this.x + this.y * this.y; }, length: function () { return Math.sqrt( this.x * this.x + this.y * this.y ); }, manhattanLength: function () { return Math.abs( this.x ) + Math.abs( this.y ); }, normalize: function () { return this.divideScalar( this.length() || 1 ); }, angle: function () { // computes the angle in radians with respect to the positive x-axis var angle = Math.atan2( this.y, this.x ); if ( angle < 0 ) angle += 2 * Math.PI; return angle; }, distanceTo: function ( v ) { return Math.sqrt( this.distanceToSquared( v ) ); }, distanceToSquared: function ( v ) { var dx = this.x - v.x, dy = this.y - v.y; return dx * dx + dy * dy; }, manhattanDistanceTo: function ( v ) { return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ); }, setLength: function ( length ) { return this.normalize().multiplyScalar( length ); }, lerp: function ( v, alpha ) { this.x += ( v.x - this.x ) * alpha; this.y += ( v.y - this.y ) * alpha; return this; }, lerpVectors: function ( v1, v2, alpha ) { return this.subVectors( v2, v1 ).multiplyScalar( alpha ).add( v1 ); }, equals: function ( v ) { return ( ( v.x === this.x ) && ( v.y === this.y ) ); }, fromArray: function ( array, offset ) { if ( offset === undefined ) offset = 0; this.x = array[ offset ]; this.y = array[ offset + 1 ]; return this; }, toArray: function ( array, offset ) { if ( array === undefined ) array = []; if ( offset === undefined ) offset = 0; array[ offset ] = this.x; array[ offset + 1 ] = this.y; return array; }, fromBufferAttribute: function ( attribute, index, offset ) { if ( offset !== undefined ) { console.warn( 'THREE.Vector2: offset has been removed from .fromBufferAttribute().' ); } this.x = attribute.getX( index ); this.y = attribute.getY( index ); return this; }, rotateAround: function ( center, angle ) { var c = Math.cos( angle ), s = Math.sin( angle ); var x = this.x - center.x; var y = this.y - center.y; this.x = x * c - y * s + center.x; this.y = x * s + y * c + center.y; return this; } } ); export { Vector2 };