Finding Same piece at @name

[Jamshid63]

HI

I know This is a kind of basic and lazy stupid question. the question is how do you find if there is same piece number has been shared by two or more pieces ?

For eg:- if you made 4 or 5 different fracture using the combination of voronoi and Boolean and you don't really know that if you named them correctly . but during the sim you noticed that some pieces are together. and you are lazy to go through all the pieces number in geo spreadsheet. what would be the easy and quick way to find two or more pieces are sharing the same piece number. ??   

Like a filter or something.   

i usually go to the view port and press 9 and toggle to name. then i move the mouse around the pieces. but then you dont really know if some pieces are shared with some really small piece.

[beliveau.maxime]

Hi Jamshid,

This sounds a lot like a python thing to do. I've seen one of my sups do it before where you basically create a new list if a certain name exists more than once.

I have a bit of free time today so I'll try to come up with a basic hip file.

Keep you posted!

[beliveau.maxime]

Got it! There's probably a more efficient way of doing this, but I'm currently learning python

First one, create a point attribute = 0 for all packed objects. Then plug in your packed geo in a python sop and copy this inside. Then if the point attribute repeat is equal to 1 you know that piece's name is doubled at least.

node = hou.pwd()
geo = node.geometry()

all_list = list()

for point in geo.points():
    repeat = point.attribValue("repeat")
    name = point.attribValue("name")
   
    if name not in all_list :
        all_list.append(name)

    elif name in all_list :
        repeat = 1
        point.setAttribValue("repeat", repeat)
        
for point in geo.points():
    if repeat == 1 :
        print name
   

I'd love to know how python experts would write this

[Jamshid63]

14 hours ago, beliveau.maxime said:

Got it! There's probably a more efficient way of doing this, but I'm currently learning python

First one, create a point attribute = 0 for all packed objects. Then plug in your packed geo in a python sop and copy this inside. Then if the point attribute repeat is equal to 1 you know that piece's name is doubled at least.

node = hou.pwd()
geo = node.geometry()

all_list = list()

for point in geo.points():
    repeat = point.attribValue("repeat")
    name = point.attribValue("name")
   
    if name not in all_list :
        all_list.append(name)

    elif name in all_list :
        repeat = 1
        point.setAttribValue("repeat", repeat)
        
for point in geo.points():
    if repeat == 1 :
        print name
   

I'd love to know how python experts would write this

Thanks for your effort Maxime. But i am really sorry. i never tried python scripting, so i dont know how to execute this above script.

Is there any other way to find/fix that problem?

[Parboil]

You can check for multiple of the same attribute value using the findattribvalcount() function in vex. I used this in a Attribute Wrangle set to Primatives

string val = prim(0, "name", @primnum);
int attrib_clash = findattribvalcount(0, "prim", "name", val);

if (attrib_clash > 1){
    setprimgroup(0, "clash", @primnum, 1, "set");
}

 

[Noobini]

13 hours ago, Parboil said:

You can check for multiple of the same attribute value using the findattribvalcount() function in vex. I used this in a Attribute Wrangle set to Primatives

string val = prim(0, "name", @primnum);
int attrib_clash = findattribvalcount(0, "prim", "name", val);

if (attrib_clash > 1){
    setprimgroup(0, "clash", @primnum, 1, "set");
}

 

yeah but...for a fragment that has say 10 faces/prims....they are all named piece123...so without even checking anything, you already know they have the same name...which is NOT a clash coz they're physically from the same piece...

[Noobini]

here's how to check visually with colors...ie. separate pieces with same name would get same color for inspection...

You'll need my convert suffix HDA...

but can be done without if you are a master wrangler...

 

vu_showclashes.hipnc

Edited January 24, 2018 by Noobini

[Parboil]

12 hours ago, Noobini said:

yeah but...for a fragment that has say 10 faces/prims....they are all named piece123...so without even checking anything, you already know they have the same name...which is NOT a clash coz they're physically from the same piece...

Awh think i misunderstood what was being asked. If you want to convert "Name" attribute into an integer and strip the "piece" you can try this. I've also made a new group per piece

i@p = atoi(strip(@name, "piece"));

string grp_name = sprintf("newGroup%d", @p);
setprimgroup(0, grp_name, @primnum, 1, "set");

@Cd = random(@p);

 

[Noobini]

yes Steven Knipping has shown the sprintf technique, i did the HDA for ease of use for non-coders

Edited January 24, 2018 by Noobini