Merge pull request #20840 from linbingquan/dev-es6-defaultvalue

src: ES6 default value.

src/animation/AnimationClip.js

@@ -9,12 +9,12 @@ import { VectorKeyframeTrack } from './tracks/VectorKeyframeTrack.js';
 import { MathUtils } from '../math/MathUtils.js';
 import { NormalAnimationBlendMode } from '../constants.js';
 
-function AnimationClip( name, duration, tracks, blendMode ) {
+function AnimationClip( name, duration = - 1, tracks, blendMode = NormalAnimationBlendMode ) {
 
 	this.name = name;
 	this.tracks = tracks;
-	this.duration = ( duration !== undefined ) ? duration : - 1;
-	this.blendMode = ( blendMode !== undefined ) ? blendMode : NormalAnimationBlendMode;
+	this.duration = duration;
+	this.blendMode = blendMode;
 
 	this.uuid = MathUtils.generateUUID();
 

src/cameras/OrthographicCamera.js

 import { Camera } from './Camera.js';
 import { Object3D } from '../core/Object3D.js';
 
-function OrthographicCamera( left, right, top, bottom, near, far ) {
+function OrthographicCamera( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {
 
 	Camera.call( this );
 
@@ -10,13 +10,13 @@ function OrthographicCamera( left, right, top, bottom, near, far ) {
 	this.zoom = 1;
 	this.view = null;
 
-	this.left = ( left !== undefined ) ? left : - 1;
-	this.right = ( right !== undefined ) ? right : 1;
-	this.top = ( top !== undefined ) ? top : 1;
-	this.bottom = ( bottom !== undefined ) ? bottom : - 1;
+	this.left = left;
+	this.right = right;
+	this.top = top;
+	this.bottom = bottom;
 
-	this.near = ( near !== undefined ) ? near : 0.1;
-	this.far = ( far !== undefined ) ? far : 2000;
+	this.near = near;
+	this.far = far;
 
 	this.updateProjectionMatrix();
 

src/objects/Line.js

@@ -13,7 +13,7 @@ const _inverseMatrix = new Matrix4();
 const _ray = new Ray();
 const _sphere = new Sphere();
 
-function Line( geometry, material, mode ) {
+function Line( geometry = new BufferGeometry(), material = new LineBasicMaterial(), mode ) {
 
 	if ( mode === 1 ) {
 
@@ -25,8 +25,8 @@ function Line( geometry, material, mode ) {
 
 	this.type = 'Line';
 
-	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
-	this.material = material !== undefined ? material : new LineBasicMaterial();
+	this.geometry = geometry;
+	this.material = material;
 
 	this.updateMorphTargets();
 

src/objects/Mesh.js

@@ -33,14 +33,14 @@ const _uvC = new Vector2();
 const _intersectionPoint = new Vector3();
 const _intersectionPointWorld = new Vector3();
 
-function Mesh( geometry, material ) {
+function Mesh( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {
 
 	Object3D.call( this );
 
 	this.type = 'Mesh';
 
-	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
-	this.material = material !== undefined ? material : new MeshBasicMaterial();
+	this.geometry = geometry;
+	this.material = material;
 
 	this.updateMorphTargets();
 

src/objects/Points.js

@@ -11,14 +11,14 @@ const _ray = new Ray();
 const _sphere = new Sphere();
 const _position = new Vector3();
 
-function Points( geometry, material ) {
+function Points( geometry = new BufferGeometry(), material = new PointsMaterial() ) {
 
 	Object3D.call( this );
 
 	this.type = 'Points';
 
-	this.geometry = geometry !== undefined ? geometry : new BufferGeometry();
-	this.material = material !== undefined ? material : new PointsMaterial();
+	this.geometry = geometry;
+	this.material = material;
 
 	this.updateMorphTargets();