pcunshaded function in SOP context

[beeemtee]

Hi,

I am experimenting with point clouds in SOPs. My problem is that the pcunshaded function only iterates random points in H10, and it seems to get into an infinite loop in H11. Does it intended to work in sop context or it's applicable only in shops?

Here is the code:

sop pc_group(
    string file = "" ;                  // Name of the PC file.
    float radius = 1 ;
    int max_points = 1000 ;
    )
{
    int handle ;
    int r_ptnum ;

    newgroup( "keep" ) ;

    handle = pcopen(file, "P", P, radius, max_points) ;
    while (pcunshaded( handle, "something" )) {
        pcimport(handle, "point.number", r_ptnum) ;
        if (ptnum == 0) {
            addgroup( "keep", r_ptnum ) ;
        }
    }
    pcclose( handle ) ;
}

The same code works as expected if pcunshaded is changed to pciterate.

Thanks in advance

bmt

Edited August 31, 2010 by beeemtee

[beeemtee]

Is there any other way to move data from one iteration of a vex sop to the next one? Both attributes and groups would be fine, but it seems to me that they are designed to be used only after the SOP is finished the processing of all points.

Edited August 31, 2010 by beeemtee

[lisux]

I think you can't use pcunshaded in SOP contest, it will only work properly in SHOP.

[sho]

Yes, pcunshaded() works in SOP as well.

You just need to use pcexport() to have your points "shaded".

sop pc_group(
    string file = "" ;                  // Name of the PC file.
    float radius = 1 ;
    int max_points = 1000 ;
    )
{
    int handle ;
    int r_ptnum ;

    newgroup( "keep" ) ;
    int status ; // Add this
    handle = pcopen(file, "P", P, radius, max_points) ;
    while (pcunshaded( handle, "something" )) {
        pcimport(handle, "point.number", r_ptnum) ;
        if (ptnum == 0) {
            addgroup( "keep", r_ptnum ) ;
        }
        status = pcexport(handle, "something", 1); // Add this
    }
    pcclose( handle ) ;
}

[beeemtee]

Yes, you have to shade ALL your queried points in the pcunshaded loop, otherwise it will give you back the unshaded points for infinity.

Thanks for your answers!

bmt