Querying attributes from one geo to another

[bandini]

I am trying to do this in an attribute wrangle. I want the user to be able to input a list of attributes to copy and then the wrangle does all the work, grabbing each attribute from the list and performing some function on it. The problem I have is that I need to run a bunch a queries about the attribute (size, type, etc.) and then create big blocks of comparison statements to fill out the appropriate function definitions for the addattrib() function, as they are type specific. I am wondering if there is an easy generic way of doing this that I am missing.

[Guest mantragora]

Do I understand this right...

 

1. You want to have only list of attributes and then AttributeWrangleSOP should go thru each and figure out their type, size etc., on its own?

2. Or will there be specified type and size and you just want to have universal (one, not many for each type, size) addAttribute() version that will add any type/size specified by user?

3. None of this.

 

...?

Edited August 31, 2015 by fântastîque Mântragorîè

[bandini]

#1 is pretty close. (Should only be point attributes)

 

Maybe posting the code will show a little bit of what I am doing and where it gets a bit ugly... I am copying attributes from a parametric uv surface onto some geo that is deformed onto that surface, using a custom deformer. I don't know what attributes the user will assign to the parametric surface, and I want to give the user the most flexibility possible. Seems like string values don't make much sense, but I can make a case for most other values.

 

 

string attributes[] = split(chs("curve_attributes"));

 

foreach (string attribute; attributes)

{

    int attribsize = attribsize(@OpInput2, "point", attribute);

    

    if(attribsize == 1)

    {

        if(pointattribtype(@OpInput2, attribute) == 0)

        {

            int puv = primuv(1, attribute, 0, v@curveuv);

            addattrib(0, "point", attribute, puv);

            setpointattrib(geoself(), attribute, @ptnum, puv, "set");

        }

        if(pointattribtype(@OpInput2, attribute) == 1)

        {

            float puv = primuv(1, attribute, 0, v@curveuv);

            addattrib(0, "point", attribute, puv);

            setpointattrib(geoself(), attribute, @ptnum, puv, "set");

        }

    }

    if(attribsize >= 1 && attribsize < 5)

    {

        vector puv = primuv(1, attribute, 0, v@curveuv);

        addattrib(0, "point", attribute, puv);

        setpointattrib(geoself(), attribute, @ptnum, puv, "set");

    }

    if(attribsize == 9)

    {

        matrix3 puv = primuv(1, attribute, 0, v@curveuv);

        addattrib(0, "point", attribute, puv);

        setpointattrib(geoself(), attribute, @ptnum, puv, "set");

    }

    if(attribsize == 16)

    {

        matrix puv = primuv(1, attribute, 0, v@curveuv);

        addattrib(0, "point", attribute, puv);

        setpointattrib(geoself(), attribute, @ptnum, puv, "set");

    }

}

Edited September 1, 2015 by bandini

[Guest mantragora]

That's my 5 AM logic . 

string names = chs("names");
string attributes[] = split(names);
 
foreach (string attrib; attributes)
{
    // possible types
    int puvI = 0;
    float puvF = 0.0;  
    vector2 puvV2; 
    vector puvV3; 
    vector4 puvV4; 
    matrix3 puvM3;
    matrix puvM4;   
    
    // test variables
    int type = pointattribtype(@OpInput1, attrib);    
    int size = attribsize(@OpInput1, "point", attrib);
      
    // manage int and float
    if (size == 1)
    {        
        if (type) { puvF = primuv(1, attrib, 0, v@curveuv); printf("float\n");}
        else { puvI = primuv(1, attrib, 0, v@curveuv); printf("int\n");}
        
        addattrib(0, "point", attrib, (type? puvF: puvI));
        setpointattrib(geoself(), attrib, @ptnum, (type? puvF: puvI), "set");          
    }
        
    // manage vector2, vector3, vector4
    else if (size > 1 && size < 5)
    {   
        if (size == 2) { puvV2 = primuv(1, attrib, 0, v@curveuv); printf("vector2\n");}
        else if (size == 3) { puvV3 = primuv(1, attrib, 0, v@curveuv); printf("vector3\n");}
        else if (size == 4) { puvV4 = primuv(1, attrib, 0, v@curveuv); printf("vector4\n");}
        
        addattrib(0, "point", attrib, (size == 4? puvV4: size == 2? puvV2: puvV3));
        setpointattrib(geoself(), attrib, @ptnum, (size == 4? puvV4: size == 2? puvV2: puvV3), "set");  
    }
    
    else if (size > 8)
    {
        // manage matrix3, matrix4
        if (size < 16) { puvM3 = primuv(1, attrib, 0, v@curveuv); printf("matrix3\n");}
        else { puvM4 = primuv(1, attrib, 0, v@curveuv); printf("matrix4\n");}
 
        addattrib(0, "point", attrib, (size < 16? puvM3: puvM4));
        setpointattrib(geoself(), attrib, @ptnum, (size < 16? puvM3: puvM4), "set");      
    }
}

Edited September 1, 2015 by fântastîque Mântragorîè

[bandini]

Thanks for that!

 

Looks like you end up with having to go through similar hoops (although in a cleaner way).

 

Thanks!

[Guest mantragora]

I don't think it works...

 

It detects attribute correctly, name it correctly, but it always creates wrong type, despite that it gets correct type into addAttribute() send.

 

... or maybe I should finally go sleep?

[bandini]

lol, go to sleep!