Loops (repeat, ping pong...etc.)

[mstarktv]

I am kind of stuck on how to use loops alongside of VEX...or even at all. I'm posting my example file, but what I'm trying to achieve is just to have a function repeat - and if possible in different ways. In my file, it's a line and I'm making the scale of the point equal 1, if the ptnum and Frame are equal. My problem is repeating it.

I tried using the solver sop, but it did as expected and just compounded the spheres scale to equal 0. I'm not really sure where to go from here 

Any help is always appreciated! 

loop.hipnc

[Sepu]

I believe this is what you are looking for ?

 

if(@ptnum == @Frame){
    @pscale = @ptnum;
}

Edited October 5, 2016 by Sepu

[mstarktv]

Unfortunately, that isn't it. That is scaling it by it's @ptnum.

Right now I have:

Quote

if(@ptnum==@Frame)
{
    @pscale = 1;
}
else
{
    @pscale = 0;
}

Which works. Basically, I'm trying to loop the action. I'm not trying to scale it by the point number. More or less I'm using this as a visual aid to help with implementing loops into vex.


 

[mestela]

Modulo (%) is usually the way to loop things. It's similar to when you first learn how to divide, and calculate the remainder, modulo just gives you the remainder.

 

So if you do....

   float t = @Frame % 5;'

...t will be

    0 1 2 3 4 0 1 2 3 4 0 1 2 3 4 

 

So if you need a longer loop, change '5' to some other number, and if you want the loop to be faster or slower, change the @Frame or @Time input, eg:

  float t = (@Time * ch('speed)) % ch('loop_length');

 

 

 

[mstarktv]

Just now, mestela said:

Modulo (%) is usually the way to loop things. It's similar to when you first learn how to divide, and calculate the remainder, modulo just gives you the remainder.

 

So if you do....

   float t = @Frame % 5;'

...t will be

    1 2 3 4 5 1 2 3 4 5 1 2 3 4 5

 

So if you need a longer loop, change '5' to some other number, and if you want the loop to be faster or slower, change the @Frame or @Time input, eg:

  float t = (@Time * ch('speed)) % ch('loop_length');

 

 

 

Perfect! Coincidentally, I always scour your site before posting here. Also...off topic, looking forward to your Houdini Class thing. Thanks again, Matt!

[mestela]

Cool, I thought I had a thing about that somewhere, I'll make it a clearer break-out bit if it isn't.

 

[mstarktv]

I'm sure it is, I just didn't know where to find it. I gave the "@Frame % #" a try and it's working