Sprite: Construct BufferGeometry when needed.

src/objects/Sprite.js

+/**
+ * @author mikael emtinger / http://gomo.se/
+ * @author alteredq / http://alteredqualia.com/
+ */
+ 
 import { Vector2 } from '../math/Vector2.js';
 import { Vector3 } from '../math/Vector3.js';
 import { Matrix4 } from '../math/Matrix4.js';
@@ -7,10 +12,7 @@ import { InterleavedBuffer } from '../core/InterleavedBuffer.js';
 import { InterleavedBufferAttribute } from '../core/InterleavedBufferAttribute.js';
 import { SpriteMaterial } from '../materials/SpriteMaterial.js';
 
-/**
- * @author mikael emtinger / http://gomo.se/
- * @author alteredq / http://alteredqualia.com/
- */
+var geometry;
 
 function Sprite( material ) {
 
@@ -18,8 +20,27 @@ function Sprite( material ) {
 
 	this.type = 'Sprite';
 
+	if ( geometry === undefined ) {
+
+		geometry = new BufferGeometry();
+
+		var float32Array = new Float32Array( [
+			- 0.5, - 0.5, 0, 0, 0,
+			0.5, - 0.5, 0, 1, 0,
+			0.5, 0.5, 0, 1, 1,
+			- 0.5, 0.5, 0, 0, 1
+		] );
+
+		var interleavedBuffer = new InterleavedBuffer( float32Array, 5 );
+
+		geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
+		geometry.addAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
+		geometry.addAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );
+
+	}
+
+	this.geometry = geometry;
 	this.material = ( material !== undefined ) ? material : new SpriteMaterial();
-	this.geometry = SpriteGeometry;
 
 	this.center = new Vector2( 0.5, 0.5 );
 
@@ -145,27 +166,4 @@ Sprite.prototype = Object.assign( Object.create( Object3D.prototype ), {
 
 } );
 
-//
-
-var SpriteGeometry = ( function () {
-
-	var geometry = new BufferGeometry();
-
-	var float32Array = new Float32Array( [
-		- 0.5, - 0.5, 0, 0, 0,
-		0.5, - 0.5, 0, 1, 0,
-		0.5, 0.5, 0, 1, 1,
-		- 0.5, 0.5, 0, 0, 1
-	] );
-
-	var interleavedBuffer = new InterleavedBuffer( float32Array, 5 );
-
-	geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
-	geometry.addAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
-	geometry.addAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );
-
-	return geometry;
-
-} )();
-
 export { Sprite };