Hello everybody,
could you please to a short look and tell me why my script is not working?
I've tested it with usual variables instead of vectors and it worked. But with vectors I only get 0,0,0 as result!

#include <acknex.h>
#include <default.c>


var Point1[3]={5,5,5};
var Point2[3]={2,2,2};
var vecPoint1_Point2[3];


function calculateVector(a,b)
{
return(vec_sub(a,b));
}


function main()

{
screen_color.blue=150;

vecPoint1_Point2=calculateVector(Point1,Point2);



PANEL* Anzeige=
{
digits (10, 10, 5, *, 1,vecPoint1_Point2[0]);
digits (10, 20, 5, *, 1,vecPoint1_Point2[1]);
digits (10, 30, 5, *, 1,vecPoint1_Point2[2]);

flags = VISIBLE;
}
}


Thanks for your response

function calculateVector(var a, var b)
{
return(vec_sub(a,b));
}

i think that'll do it

Your vectors aren't defined correctly.

You must define them like this:

VECTOR* Point1 = {x=5; y=5; z=5;}
VECTOR* Point2 = {x=2; y=2; z=2;}
VECTOR* vecPoint1_Point2;

Thanks for your fast response but both your suggestions don't´work

@shadow969: calculateVector(a,b) is O.K. as I tested it with non-vector variables.

@Lukas: Strangely, I get random numbers with your suggestion.

Still doesn't work, now I get "Empty pointer in function" message.
It is not absolutely essential for me to get this done, but I made a script for Bezier Splines with lots af vector calculations. At this point I have all vectors
splitted off in their components which looks pretty messy, and I would like to work directly with vectors.
Perhaps you can copy the code and test it if you like.

P.S. Ich schreibe mal auf englisch weiter damit jeder mitlesen kann.

This should work:

#include <acknex.h>
#include <default.c>


VECTOR* Point1 = { x=5; y=5; z=5; }
VECTOR* Point2 = { x=2; y=2; z=2; }
VECTOR* vecPoint1_Point2;


VECTOR* calculateVector(VECTOR* a, VECTOR* b)
{
return(vec_sub(a,b));
}


void main()
{
screen_color.blue=150;

vecPoint1_Point2=calculateVector(Point1,Point2);
}


PANEL* Anzeige=
{
digits (10, 10, 5, *, 1,vecPoint1_Point2.x);
digits (10, 20, 5, *, 1,vecPoint1_Point2.y);
digits (10, 30, 5, *, 1,vecPoint1_Point2.z);

flags = VISIBLE;
}

Code:

---

#include <acknex.h>
#include <default.c>


VECTOR* Point1 = {x=5; y=5; z=5;}
VECTOR* Point2 = {x=2; y=2; z=2;}
VECTOR* vecPoint1_Point2 = {x=0; y=0; z=0;}



function calculateVector(VECTOR* a,VECTOR* b)
{
return(vec_sub(a,b));
}

PANEL* Anzeige=
{
digits (10, 10, 5, *, 1,vecPoint1_Point2.x);
digits (10, 20, 5, *, 1,vecPoint1_Point2.y);
digits (10, 30, 5, *, 1,vecPoint1_Point2.z);

flags = VISIBLE;
}

function main()
{
screen_color.blue=150;
vec_set(vecPoint1_Point2,calculateVector(Point1,Point2));
}

---

VECTOR* vecPoint1_Point2; creates a vector-pointer, not a vector so it must be
VECTOR* vecPoint1_Point2 = {x=0; y=0; z=0;}

And I think it's not good to define a panel in the main function.



I tried running the script but the results are wrong. If you replace
vec_set(vecPoint1_Point2,calculateVector(Point1,Point2));
with
vec_set(vecPoint1_Point2,vec_sub(Point1,Point2));
it works. Dunno why...

-------------------------
EDIT: TWO was faster

If you replace
VECTOR* vecPoint1_Point2; with
VECTOR* vecPoint1_Point2 = {x=0; y=0; z=0;} his code works fine

Dunno why that works:
vecPoint1_Point2=calculateVector(Point1,Point2);
I think normally you must use vec_set...

With slightly modified PANEL...

digits (10, 10, 5, *, 1,vecPoint1_Point2[0]);
digits (10, 20, 5, *, 1,vecPoint1_Point2[1]);
digits (10, 30, 5, *, 1,vecPoint1_Point2[2]);

...it works! Thanks to everyone !

P.S. Everybody will be rewarded with my superfast Bezier Spline Script (if interested)