## vec_cross (VECTOR* vector, VECTOR* vector1, VECTOR* vector2);

Sets vector to the cross product of vector1 and vector2. The cross product is a vector perpendicular to both vector1 and vector2, with a magnitude equivalent to the area of the parallelogram that the two vectors span.

### Parameters:

vector1 - first vector.
vector2 - second vector.

vector

### Modifies:

vector = vector1 x vector2

Fast

### Examples:

```var a[3];
var b[3] = { 1,0,0 };var c[3] = { 0,1,0 };
vec_cross(a,b,c); // sets a to { 0,0,1 }```
```// align an entity axis to a normal vector
function ent_align(ANGLE* ang, VECTOR* to, VECTOR* axis) {	VECTOR rot;	vec_normalize(axis,1);	vec_normalize(to,1);	vec_cross(rot,to,axis);	ang_for_axis(ang,rot,-acosv(vec_dot(to,axis)));}
...
// align an entity to the floor normal
c_trace(my.x,vector(my.x,my.y,my.z-1000),IGNORE_ME); // set floor normal hit.nx
ang_align(my.pan,hit.nx,vector(0,0,1)); // align vertical axis to the floor normal
ang_rotate(my.pan,vector(angle,0,0));  // rotate pan angle
...```