While loops in VEX

[nawrot]

Is it possible to modify the value being check in the condition using the while loop?

for example,

float c = 0

while( c < 5){

c+=1

}

and it would ultimately return the value c=5?

[FrankFirsching]

Yes, for sure, you will even have to. If you wouldn't be allowed to do this, a while loop would never terminate once the condition is true. The variable c in your example would have the value 5 at the end of execution.

[nawrot]

Yes, for sure, you will even have to. If you wouldn't be allowed to do this, a while loop would never terminate once the condition is true. The variable c in your example would have the value 5 at the end of execution.

Exactly. I guess I'm getting confused with the actual wiring of the vop. How does a simple piece of code like that wire up? The docs suggest setting your conditional on the loop to just equal one, and then do your actual if/then statements in the actual while loop.

Here's the VFL of my vop:

int c = 1

while( _condition != 0 )

{

// Code produced by: while1/constant1

constant = 0;

// Code produced by: while1/suboutput1

_condition = constant;

}

This seems like it should terminate after one loop, but it doesn't. Could you give be a better idea of how I should be approach the structue of the While Loop in vops?

thanks!

[FrankFirsching]

Using a constant of one wired into the condition outside the loop like the docs describe, behaves like a

do {

...

} while(condition inside the loop)

in C/C++. I have attached a small example hip-file It creates a new (useless) point-attribute. It should show you how to setup a while loop in VOPs. But perhaps you are happier with writing your VEX-code in a text-editor. I have found, that loops are very tedious to wire in VOPs.

whileTest.zip