POP Wrangle expression question

[mrcoolmen]

Hey guys,

 

I have a question about pop wrangle if else statement. I'm trying to record the frame number that when the particle enter a

group.

 

In the old pop using the attribute node

 

if($ENTER_GROUP == -1, $F, $ENTER_GROUP) 

 

it works however im trying the new pop n with its POP wrangle it kind of not working. Im not really sure what i did wrong

 

 

i@enter_group = -1;

 

if (@enter_group == -1) {

    @enter_group = @Frame;

} else {

    @enter_group = @enter_group;

}

 

 

Thanks u guys for your help in advance

[anim]

here is the example

but essentially the code is:

// this code is run only on particles in desired group
float @enter_groupf = -1; // default value for initialization of enter group frame (if you sim in negative frames, make this lower than your start frame)
if (f@enter_groupf == -1) //if current value is still at default
{
    f@enter_groupf = @Frame;  // set it to current floating frame
}

pop_enter_group_frame.hip

Edited June 7, 2015 by anim

[mrcoolmen]

hey anim,

 

Its exactly what i need, many thanks.

 

Kevin