diff --git a/docs/api/en/math/Vector2.html b/docs/api/en/math/Vector2.html
index 8a4d09d86d007b..b2e0bfa75992c4 100644
--- a/docs/api/en/math/Vector2.html
+++ b/docs/api/en/math/Vector2.html
@@ -53,8 +53,8 @@ <h2>Constructor</h2>
 
 		<h3>[name]( [param:Float x], [param:Float y] )</h3>
 		<p>
-		[page:Float x] - the x value of the vector. Default is *0*.<br />
-		[page:Float y] -  the y value of the vector. Default is *0*.<br /><br />
+		[page:Float x] - the x value of this vector. Default is *0*.<br />
+		[page:Float y] -  the y value of this vector. Default is *0*.<br /><br />
 
 		Creates a new [name].
 		</p>
@@ -99,7 +99,7 @@ <h3>[method:this applyMatrix3]( [param:Matrix3 m] )</h3>
 
 		<h3>[method:this ceil]()</h3>
 		<p>
-		The [page:.x x] and [page:.y y] components of the vector are rounded up to the nearest integer value.
+		The [page:.x x] and [page:.y y] components of this vector are rounded up to the nearest integer value.
 		</p>
 
 		<h3>[method:this clamp]( [param:Vector2 min], [param:Vector2 max] )</h3>
@@ -180,7 +180,7 @@ <h3>[method:Boolean equals]( [param:Vector2 v] )</h3>
 		<p>Checks for strict equality of this vector and [page:Vector2 v].</p>
 
 		<h3>[method:this floor]()</h3>
-		<p>The components of the vector are rounded down to the nearest integer value.</p>
+		<p>The components of this vector are rounded down to the nearest integer value.</p>
 
 		<h3>[method:this fromArray]( [param:Array array], [param:Integer offset] )</h3>
 		<p>
@@ -247,7 +247,7 @@ <h3>[method:this negate]()</h3>
 
 		<h3>[method:this normalize]()</h3>
 		<p>
-		Converts this vector to a [link:https://en.wikipedia.org/wiki/Unit_vector unit vector] - that is, sets it equal to the vector with the same direction
+		Converts this vector to a [link:https://en.wikipedia.org/wiki/Unit_vector unit vector] - that is, sets it equal to a vector with the same direction
 		as this one, but [page:.length length] 1.
 		</p>
 
@@ -275,15 +275,15 @@ <h3>[method:this rotateAround]( [param:Vector2 center], [param:float angle] )</h
 			[page:Vector2 center] - the point around which to rotate.<br />
 			[page:float angle] - the angle to rotate, in radians.<br /><br />
 
-			Rotates the vector around [page:Vector2 center] by [page:float angle] radians.
+			Rotates this vector around [page:Vector2 center] by [page:float angle] radians.
 		</p>
 
 		<h3>[method:this round]()</h3>
-		<p>The components of the vector are rounded to the nearest integer value.</p>
+		<p>The components of this vector are rounded to the nearest integer value.</p>
 
 		<h3>[method:this roundToZero]()</h3>
 		<p>
-		The components of the vector are rounded towards zero (up if negative, down if positive) to an integer value.
+		The components of this vector are rounded towards zero (up if negative, down if positive) to an integer value.
 		</p>
 
 		<h3>[method:this set]( [param:Float x], [param:Float y] )</h3>
@@ -300,7 +300,7 @@ <h3>[method:null setComponent]( [param:Integer index], [param:Float value] )</h3
 
 		<h3>[method:this setLength]( [param:Float l] )</h3>
 		<p>
-		Sets this vector to the vector with the same direction as this one, but [page:.length length]
+		Sets this vector to a vector with the same direction as this one, but [page:.length length]
 		[page:Float l].
 		</p>
 
@@ -326,12 +326,17 @@ <h3>[method:this subVectors]( [param:Vector2 a], [param:Vector2 b] )</h3>
 
 		<h3>[method:Array toArray]( [param:Array array], [param:Integer offset] )</h3>
 		<p>
-		[page:Array array] - (optional) array to store the vector to. If this is not provided, a new array will be created.<br />
+		[page:Array array] - (optional) array to store this vector to. If this is not provided, a new array will be created.<br />
 		[page:Integer offset] - (optional) optional offset into the array.<br /><br />
 
 		Returns an array [x, y], or copies x and y into the provided [page:Array array].
 		</p>
 
+		<h3>[method:this random]()</h3>
+		<p>
+			Sets the x and y components of this vector to a random value [0-1].
+		</p>
+
 		<h2>Source</h2>
 
 		<p>
diff --git a/docs/api/en/math/Vector3.html b/docs/api/en/math/Vector3.html
index 9b10fa851fef56..5deab0876517da 100644
--- a/docs/api/en/math/Vector3.html
+++ b/docs/api/en/math/Vector3.html
@@ -53,9 +53,9 @@ <h2>Constructor</h2>
 
 		<h3>[name]( [param:Float x], [param:Float y], [param:Float z] )</h3>
 		<p>
-		[page:Float x] - the x value of the vector. Default is *0*.<br />
-		[page:Float y] -  the y value of the vector. Default is *0*.<br />
-		[page:Float z] - the z value of the vector. Default is *0*.<br /><br />
+		[page:Float x] - the x value of this vector. Default is *0*.<br />
+		[page:Float y] -  the y value of this vector. Default is *0*.<br />
+		[page:Float z] - the z value of this vector. Default is *0*.<br /><br />
 
 		Creates a new [name].
 		</p>
@@ -122,7 +122,7 @@ <h3>[method:Float angleTo]( [param:Vector3 v] )</h3>
 
 		<h3>[method:this ceil]()</h3>
 		<p>
-		The [page:.x x], [page:.y y] and [page:.z z] components of the vector are rounded up to the nearest integer value.
+		The [page:.x x], [page:.y y] and [page:.z z] components of this vector are rounded up to the nearest integer value.
 		</p>
 
 		<h3>[method:this clamp]( [param:Vector3 min], [param:Vector3 max] )</h3>
@@ -207,7 +207,7 @@ <h3>[method:Boolean equals]( [param:Vector3 v] )</h3>
 		<p>Checks for strict equality of this vector and [page:Vector3 v].</p>
 
 		<h3>[method:this floor]()</h3>
-		<p>The components of the vector are rounded down to the nearest integer value.</p>
+		<p>The components of this vector are rounded down to the nearest integer value.</p>
 
 		<h3>[method:this fromArray]( [param:Array array], [param:Integer offset] )</h3>
 		<p>
@@ -297,7 +297,7 @@ <h3>[method:this negate]()</h3>
 
 		<h3>[method:this normalize]()</h3>
 		<p>
-		Convert this vector to a [link:https://en.wikipedia.org/wiki/Unit_vector unit vector] - that is, sets it equal to the vector with the same direction
+		Convert this vector to a [link:https://en.wikipedia.org/wiki/Unit_vector unit vector] - that is, sets it equal to a vector with the same direction
 		as this one, but [page:.length length] 1.
 		</p>
 
@@ -323,16 +323,16 @@ <h3>[method:this reflect]( [param:Vector3 normal] )</h3>
 		<p>
 		[page:Vector3 normal] - the normal to the reflecting plane<br /><br />
 
-		Reflect the vector off of plane orthogonal to [page:Vector3 normal]. Normal is assumed to
+		Reflect this vector off of plane orthogonal to [page:Vector3 normal]. Normal is assumed to
 		have unit length.
 		</p>
 
 		<h3>[method:this round]()</h3>
-		<p>The components of the vector are rounded to the nearest integer value.</p>
+		<p>The components of this vector are rounded to the nearest integer value.</p>
 
 		<h3>[method:this roundToZero]()</h3>
 		<p>
-		The components of the vector are rounded towards zero (up if negative, down if positive) to an integer value.
+		The components of this vector are rounded towards zero (up if negative, down if positive) to an integer value.
 		</p>
 
 		<h3>[method:this set]( [param:Float x], [param:Float y], [param:Float z] )</h3>
@@ -388,7 +388,7 @@ <h3>[method:this setFromSphericalCoords]( [param:Float radius], [param:Float phi
 
 		<h3>[method:this setLength]( [param:Float l] )</h3>
 		<p>
-		Set this vector to the vector with the same direction as this one, but [page:.length length]
+		Set this vector to a vector with the same direction as this one, but [page:.length length]
 		[page:Float l].
 		</p>
 
@@ -417,7 +417,7 @@ <h3>[method:this subVectors]( [param:Vector3 a], [param:Vector3 b] )</h3>
 
 		<h3>[method:Array toArray]( [param:Array array], [param:Integer offset] )</h3>
 		<p>
-		[page:Array array] - (optional) array to store the vector to. If this is not provided
+		[page:Array array] - (optional) array to store this vector to. If this is not provided
 		a new array will be created.<br />
 		[page:Integer offset] - (optional) optional offset into the array.<br /><br />
 
@@ -437,6 +437,10 @@ <h3>[method:this unproject]( [param:Camera camera] )</h3>
 		Projects this vector from the camera's normalized device coordinate (NDC) space into world space.
 		</p>
 
+		<h3>[method:this random]()</h3>
+		<p>
+			Sets the x, y and z components of this vector to a random value [0-1].
+		</p>
 
 		<h2>Source</h2>
 
diff --git a/docs/api/en/math/Vector4.html b/docs/api/en/math/Vector4.html
index 93df50b48e993b..3789140d82eb55 100644
--- a/docs/api/en/math/Vector4.html
+++ b/docs/api/en/math/Vector4.html
@@ -52,10 +52,10 @@ <h2>Constructor</h2>
 
 		<h3>[name]( [param:Float x], [param:Float y], [param:Float z], [param:Float w] )</h3>
 		<p>
-		[page:Float x] - the x value of the vector. Default is *0*.<br />
-		[page:Float y] -  the y value of the vector. Default is *0*.<br />
-		[page:Float z] - the z value of the vector. Default is *0*.<br />
-		[page:Float w] - the w value of the vector. Default is *1*.<br /><br />
+		[page:Float x] - the x value of this vector. Default is *0*.<br />
+		[page:Float y] -  the y value of this vector. Default is *0*.<br />
+		[page:Float z] - the z value of this vector. Default is *0*.<br />
+		[page:Float w] - the w value of this vector. Default is *1*.<br /><br />
 
 		Creates a new [name].
 		</p>
@@ -99,7 +99,7 @@ <h3>[method:this applyMatrix4]( [param:Matrix4 m] )</h3>
 
 		<h3>[method:this ceil]()</h3>
 		<p>
-		The [page:.x x], [page:.y y], [page:.z z] and [page:.w w] components of the vector are rounded up to the nearest integer value.
+		The [page:.x x], [page:.y y], [page:.z z] and [page:.w w] components of this vector are rounded up to the nearest integer value.
 		</p>
 
 		<h3>[method:this clamp]( [param:Vector4 min], [param:Vector4 max] )</h3>
@@ -156,7 +156,7 @@ <h3>[method:Boolean equals]( [param:Vector4 v] )</h3>
 		<p>Checks for strict equality of this vector and [page:Vector4 v].</p>
 
 		<h3>[method:this floor]()</h3>
-		<p>The components of the vector are rounded down to the nearest integer value.</p>
+		<p>The components of this vector are rounded down to the nearest integer value.</p>
 
 		<h3>[method:this fromArray]( [param:Array array], [param:Integer offset] )</h3>
 		<p>
@@ -226,7 +226,7 @@ <h3>[method:this negate]()</h3>
 
 		<h3>[method:this normalize]()</h3>
 		<p>
-		Converts this vector to a [link:https://en.wikipedia.org/wiki/Unit_vector unit vector] - that is, sets it equal to the vector with the same direction
+		Converts this vector to a [link:https://en.wikipedia.org/wiki/Unit_vector unit vector] - that is, sets it equal to a vector with the same direction
 		as this one, but [page:.length length] 1.
 		</p>
 
@@ -246,11 +246,11 @@ <h3>[method:this multiplyScalar]( [param:Float s] )</h3>
 		<p>Multiplies this vector by scalar [page:Float s].</p>
 
 		<h3>[method:this round]()</h3>
-		<p>The components of the vector are rounded to the nearest integer value.</p>
+		<p>The components of this vector are rounded to the nearest integer value.</p>
 
 		<h3>[method:this roundToZero]()</h3>
 		<p>
-		The components of the vector are rounded towards zero (up if negative, down if positive) to an integer value.
+		The components of this vector are rounded towards zero (up if negative, down if positive) to an integer value.
 		</p>
 
 		<h3>[method:this set]( [param:Float x], [param:Float y], [param:Float z], [param:Float w] )</h3>
@@ -285,7 +285,7 @@ <h3>[method:null setComponent]( [param:Integer index], [param:Float value] )</h3
 
 		<h3>[method:this setLength]( [param:Float l] )</h3>
 		<p>
-		Sets this vector to the vector with the same direction as this one, but [page:.length length]
+		Sets this vector to a vector with the same direction as this one, but [page:.length length]
 		[page:Float l].
 		</p>
 
@@ -317,12 +317,17 @@ <h3>[method:this subVectors]( [param:Vector4 a], [param:Vector4 b] )</h3>
 
 		<h3>[method:Array toArray]( [param:Array array], [param:Integer offset] )</h3>
 		<p>
-		[page:Array array] - (optional) array to store the vector to. If this is not provided, a new array will be created.<br />
+		[page:Array array] - (optional) array to store this vector to. If this is not provided, a new array will be created.<br />
 		[page:Integer offset] - (optional) optional offset into the array.<br /><br />
 
 		Returns an array [x, y, z, w], or copies x, y, z and w into the provided [page:Array array].
 		</p>
 
+		<h3>[method:this random]()</h3>
+		<p>
+			Sets the x, y, z and w components of this vector to a random value [0-1].
+		</p>
+
 		<h2>Source</h2>
 
 		<p>
diff --git a/docs/api/zh/math/Vector2.html b/docs/api/zh/math/Vector2.html
index 9f832d4502389e..a5ee5d62c98f13 100644
--- a/docs/api/zh/math/Vector2.html
+++ b/docs/api/zh/math/Vector2.html
@@ -333,6 +333,11 @@ <h3>[method:Array toArray]( [param:Array array], [param:Integer offset] )</h3>
 		返回一个数组[x, y]，或者将x和y复制到所传入的[page:Array array]中。
 		</p>
 
+		<h3>[method:this random]()</h3>
+		<p>
+			Sets the x and y components of this vector to a random value [0-1].
+		</p>
+
 		<h2>源代码</h2>
 
 		<p>
diff --git a/docs/api/zh/math/Vector3.html b/docs/api/zh/math/Vector3.html
index 43df0e1dc356a0..011d7eecda7142 100644
--- a/docs/api/zh/math/Vector3.html
+++ b/docs/api/zh/math/Vector3.html
@@ -318,7 +318,7 @@ <h3>[method:this reflect]( [param:Vector3 normal] )</h3>
 		<p>
 		[page:Vector3 normal] - the normal to the reflecting plane<br /><br />
 
-		Reflect the vector off of plane orthogonal to [page:Vector3 normal]. Normal is assumed to
+		Reflect this vector off of plane orthogonal to [page:Vector3 normal]. Normal is assumed to
 		have unit length.
 		</p>
 
@@ -426,6 +426,10 @@ <h3>[method:this unproject]( [param:Camera camera] )</h3>
 		Projects this vector from the camera's normalized device coordinate (NDC) space into world space.
 		</p>
 
+		<h3>[method:this random]()</h3>
+		<p>
+			Sets the x, y and z components of this vector to a random value [0-1].
+		</p>
 
 		<h2>源代码</h2>
 
diff --git a/docs/api/zh/math/Vector4.html b/docs/api/zh/math/Vector4.html
index 33e156afbfe0f0..69489a64452e87 100644
--- a/docs/api/zh/math/Vector4.html
+++ b/docs/api/zh/math/Vector4.html
@@ -322,6 +322,11 @@ <h3>[method:Array toArray]( [param:Array array], [param:Integer offset] )</h3>
 		返回一个数组[x, y, z, w]，或者将x、y、z和w复制到所传入的[page:Array array]中。
 		</p>
 
+		<h3>[method:this random]()</h3>
+		<p>
+			Sets the x, y, z and w components of this vector to a random value [0-1].
+		</p>
+
 		<h2>源代码</h2>
 
 		<p>