#include<osg/Vec3f>
#include<iostream>
int main()
{
osg::Vec3f v1(1,2,3);
osg::Vec3f v2(9,8,7);
osg::Vec3f v3 = v1^v2;
printf("%2.3f\t%2.3f\t%2.3f\n",v3.x(),v3.y(),v3.z());
}
ijk may be the vector of the current coordinate system,
Use the ^ symbol for cross-multiplication in osg
The result of the cross product is a vector:
x=ay *bz - az*by
y = - (ax * bz - az * bx)
z=ax*by - ay*bx