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Expressions in channel field

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SteN
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Hi

Can I write an if statement in a channel field so then I can set the value of that channel if the condition is true?

Thanks









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BabaJ
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Yes you can.

I don't know how to do it in Hscript

But if you set the expression language icon ( upper right hand corner of Parameter Window Pane in which your “channel field” resides ) to Python the code below will work.

In this case I have a box and the tx - “channel field” has the following code put in it.
the my_var_B variable is linked to the boxes ty position parameter.

So tx of the box will always be at position 2 unless ty is 2 which at the point tx becomes 4.


result = 0
my_var_A = 2
my_var_B = ch("ty")
if(my_var_A == my_var_B):
    result = 4
else:    
    result = 2
    
return result
Edited by BabaJ - July 30, 2016 15:29:17
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Nima
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Hi all.
This is really simple in Hscript.
something likes C++:
{
    if(ch("/obj/torus_object1/transform1/ty") > 1)
        return 1;
    else
        return 0;
}
Edited by Nima - July 30, 2016 15:38:09
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SteN
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Thanks for the fast reply.

What about VEX?

I wrote this in the “n°of copies” channel in a copy sop but gives me error.

int x = ch("../Height/Bricks_in_height");
int result;
if (x%2 = 0)
{
   result = x/2; 
  
}
return result;

EDIT:
Ok I tried the Hscript one and it works, but why cant I just write in vex in channels but just in wrangles?
Edited by SteN - July 30, 2016 18:21:55
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Nima
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You should put all of your code in a pair of brackets:
This means that:
{
    int x = ch("../Height/Bricks_in_height");
    int result;
    if (x%2 = 0)
    {
         result = x/2;   
    }
    return result;
}
For using VEX instead of Hscript See example file.
Edited by Nima - July 30, 2016 19:28:03

Attachments:
Modifying with VEX.hip (60.0 KB)

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SteN
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Thank you so much.
So basically if I want to use vex in a channel field I have to put the code in pair of curly brackets?
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Nima
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When you are in channel field for more than one line of code you should put your code in a pair of brackets.
Edited by Nima - July 31, 2016 05:51:39
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SteN
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Oh ok now I got it
https://vimeo.com/user43100796 [vimeo.com]
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