Added default material to Mesh, Line and ParticleSystem. Fixes #1373.

src/objects/Line.js

@@ -7,8 +7,7 @@ THREE.Line = function ( geometry, material, type ) {
 	THREE.Object3D.call( this );
 
 	this.geometry = geometry;
-	this.material = material;
-
+	this.material = ( material !== undefined ) ? material : new THREE.LineBasicMaterial( { color: Math.random() * 0xffffff } );
 	this.type = ( type !== undefined ) ? type : THREE.LineStrip;
 
 	if ( this.geometry ) {

src/objects/Mesh.js

@@ -9,7 +9,7 @@ THREE.Mesh = function ( geometry, material ) {
 	THREE.Object3D.call( this );
 
 	this.geometry = geometry;
-	this.material = material;
+	this.material = ( material !== undefined ) ? material : new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, wireframe: true } );
 
 	if ( this.geometry ) {
 

src/objects/MorphAnimMesh.js

@@ -2,7 +2,7 @@
  * @author alteredq / http://alteredqualia.com/
  */
 
-THREE.MorphAnimMesh = function( geometry, material ) {
+THREE.MorphAnimMesh = function ( geometry, material ) {
 
 	THREE.Mesh.call( this, geometry, material );
 

src/objects/ParticleSystem.js

@@ -7,7 +7,7 @@ THREE.ParticleSystem = function ( geometry, material ) {
 	THREE.Object3D.call( this );
 
 	this.geometry = geometry;
-	this.material = material;
+	this.material = ( material !== undefined ) ? material : new THREE.ParticleBasicMaterial( { color: Math.random() * 0xffffff } );
 
 	this.sortParticles = false;
 

src/objects/SkinnedMesh.js

@@ -3,7 +3,7 @@
  * @author alteredq / http://alteredqualia.com/
  */
 
-THREE.SkinnedMesh = function( geometry, material ) {
+THREE.SkinnedMesh = function ( geometry, material ) {
 
 	THREE.Mesh.call( this, geometry, material );
 

utils/build.py

@@ -191,8 +191,7 @@ CANVAS_FILES = [
 'renderers/renderables/RenderableFace4.js',
 'renderers/renderables/RenderableObject.js',
 'renderers/renderables/RenderableParticle.js',
-'renderers/renderables/RenderableLine.js',
-'extras/ImageUtils.js'
+'renderers/renderables/RenderableLine.js'
 ]
 
 DOM_FILES = [
@@ -219,6 +218,9 @@ DOM_FILES = [
 'cameras/PerspectiveCamera.js',
 'lights/Light.js',
 'materials/Material.js',
+'materials/LineBasicMaterial.js',
+'materials/MeshBasicMaterial.js',
+'materials/ParticleBasicMaterial.js',
 'materials/ParticleDOMMaterial.js',
 'textures/Texture.js',
 'textures/DataTexture.js',
@@ -235,8 +237,7 @@ DOM_FILES = [
 'renderers/renderables/RenderableFace4.js',
 'renderers/renderables/RenderableObject.js',
 'renderers/renderables/RenderableParticle.js',
-'renderers/renderables/RenderableLine.js',
-'extras/ImageUtils.js'
+'renderers/renderables/RenderableLine.js'
 ]
 
 SVG_FILES = [
@@ -289,8 +290,7 @@ SVG_FILES = [
 'renderers/renderables/RenderableFace4.js',
 'renderers/renderables/RenderableObject.js',
 'renderers/renderables/RenderableParticle.js',
-'renderers/renderables/RenderableLine.js',
-'extras/ImageUtils.js'
+'renderers/renderables/RenderableLine.js'
 ]
 
 WEBGL_FILES = [
@@ -365,8 +365,7 @@ WEBGL_FILES = [
 'extras/renderers/plugins/ShadowMapPlugin.js',
 'extras/renderers/plugins/SpritePlugin.js',
 'extras/shaders/ShaderFlares.js',
-'extras/shaders/ShaderSprite.js',
-'extras/ImageUtils.js'
+'extras/shaders/ShaderSprite.js'
 ]
 
 def merge(files):