Sign() function for vector type in VEX

[Hazoc]

Hi

I've been porting a certain GLSL -shader into VEX and need to replicate few functions from GLSL.

One of them is the sign(float A); function that returns -1, 0 or 1 depending on the sign of the argument. The GLSL function also accepts vector type argument and that's what I'm trying to replicate.

Does anyone know how the sign of a vector is actually defined? Now I just test each components sign but I doupt I'm doing the right thing. I've been googling all day without really finding any hints or useful source code.

My function sign(vector a) :

float sign(vector a) {
	if (a.x == 0.0 && a.y == 0.0 && a.z == 0.0) {return 0;}
	else if (a.x < 0.0 || a.y < 0.0 || a.z < 0.0) {return -1;}
	return 1;
}[/CODE]

Any ideas?

Thanks

[Hazoc]

Maybe it's this way. Just return a vector of signed components.

vector sign(vector a) {
      return set(sign(a.x), sign(a.y), sign(a.z));
}[/CODE]

[edward]

I think pyro_math.h has a usable definition so... #include <pyro_math.h>

[Hazoc]

True! Thanks.

I'll show them here.

float sign(float x) {
   return (x>0)-(x<0);
}[/CODE]

[CODE]vector sign(vector x) {
return set(sign(x.x),sign(x.y),sign(x.z));
}[/CODE]