Function newb

[Mzigaib]

Newb question!

 

If I go to aliases and variables and create a function like:

 

float test(float x, float y)

{

float result = x+y;

return $result;

}

 

And to test it I go to texport I do like:

 

echo `test(3,5)`

 

I get:

 

Expression error: Undefined variable

 

I was expecting 8, what am I doing wrong?

 

Thanks!

[graham]

 You don't need the $ before result on your return line.  Remove it and it will work correctly.

[Mzigaib]

Thanks Graham!

 

Now I want to create a function for my camera focus that works like a ramp based on distance so I want to get the distance between my camera and the target and divide it with a max distance and then I remap the values later so for that I did this:

 

float focus (vector cam,vector target,float maxdist)

{

vector direction = cam-target;

float dist = length(direction);

float ndist = dist / maxdist;

return ndist;

}

 

I can remap the values later but if I go to textport to test it like this:

 

echo `focus(vector3(1,1,1),vector3(5,5,5),5)`

 

Houdini tells me this:

 

Expression error: Invalid number of arguments for function

 

What am I doing wrong?

 

Thanks again!

Edited May 5, 2014 by Mzigaib

[Mzigaib]

[sOLVED]!

 

I made a modification and it worked:

 

float focus (float maxdist,float near,float far)

{

vector cam = vector3(ch("/obj/cam1/tx"),ch("/obj/cam1/ty"),ch("/obj/cam1/tz"));

vector target = vector3(ch("/obj/target/tx"),ch("/obj/target/ty"),ch("/obj/target/tz"));

float dist = distance(cam[0],cam[1],cam[2],target[0],target[1],target[2]);

float ndist = clamp(maxdist/dist,near,far);

float finalfocus = fit01(ndist,near,far);

return finalfocus;

}

 

I hope it helps someone.

 

Cheers!