diff --git a/src/math/Vector2.js b/src/math/Vector2.js
index 7d1f1fa0891f00c264414319791a2bc7a197e6a7..fdb7fa092bdd512118e98715a28e40e710bd8851 100644
--- a/src/math/Vector2.js
+++ b/src/math/Vector2.js
@@ -33,6 +33,15 @@ THREE.Vector2.prototype = {
 
 	},
 
+	setScalar: function ( scalar ) {
+
+		this.x = scalar;
+		this.y = scalar;
+
+		return this;
+
+	},
+
 	setX: function ( x ) {
 
 		this.x = x;
diff --git a/src/math/Vector3.js b/src/math/Vector3.js
index cc6d08cad41c88b6d1add4e0d8c71c1ad2a4290c..c4272ad2f9db45f3283f55c4c86d5c54de9a0abe 100644
--- a/src/math/Vector3.js
+++ b/src/math/Vector3.js
@@ -29,6 +29,16 @@ THREE.Vector3.prototype = {
 
 	},
 
+	setScalar: function ( scalar ) {
+
+		this.x = scalar;
+		this.y = scalar;
+		this.z = scalar;
+
+		return this;
+
+	},
+
 	setX: function ( x ) {
 
 		this.x = x;
diff --git a/src/math/Vector4.js b/src/math/Vector4.js
index bb9cca1322e99c521a51d0d889c5af66a5d5436a..81319d605f04ebea684a7597fcbd502224b7c971 100644
--- a/src/math/Vector4.js
+++ b/src/math/Vector4.js
@@ -30,6 +30,17 @@ THREE.Vector4.prototype = {
 
 	},
 
+	setScalar: function ( scalar ) {
+
+		this.x = scalar;
+		this.y = scalar;
+		this.z = scalar;
+		this.w = scalar;
+
+		return this;
+
+	},
+
 	setX: function ( x ) {
 
 		this.x = x;