# Vector4 > Representation of four-dimensional vectors. ## Definition * **Type:** Struct * **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md) * **Assembly:** UnityEngine.CoreModule * **Implements:** [IEquatable\](https://learn.microsoft.com/dotnet/api/system.iequatable-1), [IFormattable](https://learn.microsoft.com/dotnet/api/system.iformattable) ```csharp public struct Vector4 : IEquatable, IFormattable ``` ## Remarks This structure is used in some places to represent four component vectors (e.g. mesh tangents, parameters for shaders). In the majority of other cases a [Vector3](/engine/6000.0/script-reference/unityengine/vector3.md) is used. ## Fields | Value | Description | | ------------------------------------------------------------- | -------------------------- | | [w](/engine/6000.0/script-reference/unityengine/vector4/w.md) | W component of the vector. | | [x](/engine/6000.0/script-reference/unityengine/vector4/x.md) | X component of the vector. | | [y](/engine/6000.0/script-reference/unityengine/vector4/y.md) | Y component of the vector. | | [z](/engine/6000.0/script-reference/unityengine/vector4/z.md) | Z component of the vector. | ## Constructors | Constructor | Description | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ----------------------------------------------------------------------------- | | [Vector4(System.Single,System.Single)](/engine/6000.0/script-reference/unityengine/vector4/ctor.md#vector4\(float-float\)) | Creates a new vector with given x, y components and sets `z` and `w` to zero. | | [Vector4(System.Single,System.Single,System.Single)](/engine/6000.0/script-reference/unityengine/vector4/ctor.md#vector4\(float-float-float\)) | Creates a new vector with given x, y, z components and sets `w` to zero. | | [Vector4(System.Single,System.Single,System.Single,System.Single)](/engine/6000.0/script-reference/unityengine/vector4/ctor.md#vector4\(float-float-float-float\)) | Creates a new vector with given x, y, z, w components. | ## Properties | Property | Description | | ----------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | | [this\[\]](/engine/6000.0/script-reference/unityengine/vector4/item.md) | Access the x, y, z, w components using \[0], \[1], \[2], \[3] respectively. | | [magnitude](/engine/6000.0/script-reference/unityengine/vector4/magnitude.md) | Returns the length of this vector (Read Only). | | [normalized](/engine/6000.0/script-reference/unityengine/vector4/normalized.md) | Creates a normalized copy of a vector based on the current vector. | | [sqrMagnitude](/engine/6000.0/script-reference/unityengine/vector4/sqrmagnitude.md) | Returns the squared length of this vector (Read Only). | ## Static Properties | Property | Description | | ------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------- | | [negativeInfinity](/engine/6000.0/script-reference/unityengine/vector4/negativeinfinity.md) | Shorthand for writing `Vector4(float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity, float.NegativeInfinity)`. | | [one](/engine/6000.0/script-reference/unityengine/vector4/one.md) | Shorthand for writing `Vector4(1,1,1,1)`. | | [positiveInfinity](/engine/6000.0/script-reference/unityengine/vector4/positiveinfinity.md) | Shorthand for writing `Vector4(float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity, float.PositiveInfinity)`. | | [zero](/engine/6000.0/script-reference/unityengine/vector4/zero.md) | Shorthand for writing `Vector4(0,0,0,0)`. | ## Methods | Method | Description | | ----------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | | [Equals](/engine/6000.0/script-reference/unityengine/vector4/equals.md) | Compares two vectors to each other and evaluates if they are equal. | | [Normalize](/engine/6000.0/script-reference/unityengine/vector4/normalize.md) | Makes this vector have a [Vector4.magnitude](/engine/6000.0/script-reference/unityengine/vector4/magnitude.md) of 1. | | [Scale](/engine/6000.0/script-reference/unityengine/vector4/scale.md) | Multiplies every component of this vector by the same component of `scale`. | | [Set](/engine/6000.0/script-reference/unityengine/vector4/set.md) | Set x, y, z and w components of an existing Vector4. | | [ToString](/engine/6000.0/script-reference/unityengine/vector4/tostring.md) | Formats this vector as a string. | ## Static Methods | Method | Description | | ------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | [Distance](/engine/6000.0/script-reference/unityengine/vector4/distance.md) | Returns the distance between a and b. | | [Dot](/engine/6000.0/script-reference/unityengine/vector4/dot.md) | Calculates the dot product of two vectors. | | [Lerp](/engine/6000.0/script-reference/unityengine/vector4/lerp.md) | Linearly interpolates between two vectors. | | [LerpUnclamped](/engine/6000.0/script-reference/unityengine/vector4/lerpunclamped.md) | Linearly interpolates between two vectors. | | [Max](/engine/6000.0/script-reference/unityengine/vector4/max.md) | Creates a vector that is made from the largest components of two vectors. | | [Min](/engine/6000.0/script-reference/unityengine/vector4/min.md) | Creates a vector that is made from the smallest components of two vectors. | | [MoveTowards](/engine/6000.0/script-reference/unityengine/vector4/movetowards.md) | Moves a point `current` towards `target`. | | [Normalize](/engine/6000.0/script-reference/unityengine/vector4/normalize.md) | Returns a normalized vector based on the given vector. The normalized vector has a [Vector4.magnitude](/engine/6000.0/script-reference/unityengine/vector4/magnitude.md) of 1 and is in the same direction as the given vector. Returns a zero vector if the given vector is too small to be normalized. | | [Project](/engine/6000.0/script-reference/unityengine/vector4/project.md) | Projects a vector onto another vector. | | [Scale](/engine/6000.0/script-reference/unityengine/vector4/scale.md) | Multiplies two vectors component-wise. | ## Operators | Operator | Description | | ----------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------- | | [operator +](/engine/6000.0/script-reference/unityengine/vector4/op-addition.md) | Adds two vectors. | | [operator /](/engine/6000.0/script-reference/unityengine/vector4/op-division.md) | Divides a vector by a number. | | [operator ==](/engine/6000.0/script-reference/unityengine/vector4/op-equality.md) | Returns true if two vectors are approximately equal. | | [Vector4](/engine/6000.0/script-reference/unityengine/vector4/op-implicit.md) | Converts a [Vector2](/engine/6000.0/script-reference/unityengine/vector2.md) to a Vector4. | | [Vector2](/engine/6000.0/script-reference/unityengine/vector4/op-implicit.md) | Converts a [Vector4](/engine/6000.0/script-reference/unityengine/vector4.md) to a [Vector2](/engine/6000.0/script-reference/unityengine/vector2.md). | | [Vector3](/engine/6000.0/script-reference/unityengine/vector4/op-implicit.md) | Converts a Vector4 to a [Vector3](/engine/6000.0/script-reference/unityengine/vector3.md). | | [operator \*](/engine/6000.0/script-reference/unityengine/vector4/op-multiply.md) | Multiplies a number by a vector. | | [operator -](/engine/6000.0/script-reference/unityengine/vector4/op-subtraction.md) | Subtracts one vector from another. |