thebookofshaders/glossary/cross.md
2015-04-18 10:41:34 -04:00

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## Cross
Calculate the cross product of two vectors
### Declaration
```glsl
vec3 cross(vec3 x, vec3 y)
```
### Parameters
```x``` specifies the first of two vectors
```y``` specifies the second of two vectors
### Description
```cross()``` returns the cross product of two vectors, ```x``` and ```y```. The input parameters can only be 3-component floating vectors. The cross product is equivalent to the product of the length of the vectors times the sinus of the(smaller) angle between ```x``` and ```y```.
### See Also
[dot()](index.html#dot.md)