grouping procedurally

[logix1390]

Hello,

I am trying to group points procedurally 3 at a time. I have a simple line and I am trying to apply if statement logic to it. It works but it is not fully procedural since I would have to keep copy and pasting the if statement in order to group more points. 

Is there a more procedural way to do this using vex or perhaps another way ? Any input would be appreciated. I will attach a photo and a scene file to show you what I am talking about. 

Thank you!

group_by_3_procedurally.hipnc

[3dome]

use this in a pointwrangle
i@grp = @ptnum/3;

and then use a partition SOP, entity set to points with the following rule
group_`@grp`

Edited October 20, 2018 by 3dome

[konstantin magnus]

In a point wrangle:

int points = chi('points');
string name = chs('name');
string segment = itoa(@ptnum / points);
string group_name = concat(name, segment);
setpointgroup(0, group_name, @ptnum, 1, 'set');

 

[konstantin magnus]

Same thing in a python node:

node = hou.pwd()
geo = node.geometry()
name = node.evalParm('name')
points = node.evalParm('points')

for point in geo.points():
    segment = point.number() / points
    group_name = name + str(segment)
    groups = [g.name() for g in geo.pointGroups()]
    if group_name not in groups:
        grp = geo.createPointGroup(group_name)
    grp.add(point)

 

Edited October 20, 2018 by konstantin magnus

[logix1390]

@3dome

Thank you 3dome this works  !!

@konstantin magnus

Amazing stuff konstantin, thank you for both methods. works perfectly!!