---
title: "cross | JavaScript maps SDK"
description: "Documentation for MapTiler SDK"
---

> For AI agents: a documentation index is available at [/llms.txt](https://docs.maptiler.com/llms.txt). Markdown versions of all pages are available by appending .md to any URL.

# Function cross

-   cross(  
        out: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/),  
        u: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/),  
        v: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/),  
        w: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/),  
    ): [vec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.vec4/)[](#cross)
    
    Returns the cross-product of three vectors in a 4-dimensional space
    
    #### Parameters
    
    -   out: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/)
        
        the receiving vector
        
    -   u: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/)
        
        the first vector
        
    -   v: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/)
        
        the second vector
        
    -   w: [ReadonlyVec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.ReadonlyVec4/)
        
        the third vector
        
    
    #### Returns [vec4](https://docs.maptiler.com/sdk-js/api-reference/types/Externals.vec4/)
    
    result