var Class = require('../../utils/Class'); 
var Vector3 = require('../../math/Vector3'); 
var points = [new Vector3(), new Vector3(), new Vector3(), new Vector3(), new Vector3(), new Vector3(), new Vector3(), new Vector3()] ; 
var Box3 = new Class({ 
initialize: function Box3(min, max){ 
if (min === undefined) { 
min = new Vector3(+ Infinity, + Infinity, + Infinity); 
} 
if (max === undefined) { 
max = new Vector3(- Infinity, - Infinity, - Infinity); 
} 
this.min = min; 
this.max = max; 
} 
,
set: function (min, max){ 
this.min.copy(min); 
this.max.copy(max); 
return this; 
} 
,
setFromPoints: function (points){ 
this.makeEmpty(); 
for (var i = 0; 
i < (_AN_Read_length('length', points)); i++ ){ 
this.expandByPoint(points[i]); 
} 
return this; 
} 
,
makeEmpty: function (){ 
this.min.set(+ Infinity, + Infinity, + Infinity); 
this.max.set(- Infinity, - Infinity, - Infinity); 
return this; 
} 
,
expandByPoint: function (point){ 
this.min.min(point); 
this.max.max(point); 
return this; 
} 
,
expandByScalar: function (scalar){ 
this.min.addScalar(- scalar); 
this.max.addScalar(scalar); 
return this; 
} 
,
expandByBox3: function (box3){ 
this.min.min(box3.min); 
this.max.max(box3.max); 
return this; 
} 
,
setFromArray: function (array, gap){ 
if (gap === undefined) { 
gap = 3; 
} 
var minX = + Infinity; 
var minY = + Infinity; 
var minZ = + Infinity; 
var maxX = - Infinity; 
var maxY = - Infinity; 
var maxZ = - Infinity; 
for (var i = 0; 
i < (_AN_Read_length('length', array)); i += gap){ 
var x = array[i]; 
var y = array[i + 1]; 
var z = array[i + 2]; 
if (x < minX) { 
minX = x; 
} 
if (y < minY) { 
minY = y; 
} 
if (z < minZ) { 
minZ = z; 
} 
if (x > maxX) { 
maxX = x; 
} 
if (y > maxY) { 
maxY = y; 
} 
if (z > maxZ) { 
maxZ = z; 
} 
} 
this.min.set(minX, minY, minZ); 
this.max.set(maxX, maxY, maxZ); 
return this; 
} 
,
isEmpty: function (){ 
return (this.max.x < this.min.x) || (this.max.y < this.min.y) || (this.max.z < this.min.z); 
} 
,
equals: function (box){ 
return box.min.equals(this.min) && box.max.equals(this.max); 
} 
,
getCenter: function (optionalTarget){ 
if (optionalTarget === undefined) { 
optionalTarget = new Vector3(); 
} 
var result = optionalTarget; 
return this.isEmpty()? result.set(0, 0, 0): result.addVectors(this.min, this.max).scale(0.5); 
} 
,
applyMatrix4: function (matrix){ 
if (this.isEmpty()) { 
return this; 
} 
points[0].set(this.min.x, this.min.y, this.min.z).applyMatrix4(matrix); 
points[1].set(this.min.x, this.min.y, this.max.z).applyMatrix4(matrix); 
points[2].set(this.min.x, this.max.y, this.min.z).applyMatrix4(matrix); 
points[3].set(this.min.x, this.max.y, this.max.z).applyMatrix4(matrix); 
points[4].set(this.max.x, this.min.y, this.min.z).applyMatrix4(matrix); 
points[5].set(this.max.x, this.min.y, this.max.z).applyMatrix4(matrix); 
points[6].set(this.max.x, this.max.y, this.min.z).applyMatrix4(matrix); 
points[7].set(this.max.x, this.max.y, this.max.z).applyMatrix4(matrix); 
this.setFromPoints(points); 
return this; 
} 
,
copy: function (box){ 
this.min.copy(box.min); 
this.max.copy(box.max); 
return this; 
} 
}
); 
module.exports = Box3;