create #pdg #tops #topnet and nodes #houdini #python

create topnet stuff.py

import os
import subproocess
import hou

def make_rs_convert_topnet(path):
    """
    Create topnet and some nodes
    """
    
    texfiles_dir = os.path.dirname(path)
    
    # get redshift path from environ variables
    rs_tex_processor_path = hou.getenv('REDSHIFT_COREDATAPATH') + '/bin/redshiftTextureProcessor.exe'
    
    # create topnet and cook in background
    topnet = hou.node('/tasks').createNode('topnet', 'rs_tex_convert')
    
    # tidy layout
    hou.node('/tasks').layoutChildren()

    # ignore errors to skip non convertable files which is fine
    topnet.children()[0].parm('local_echandleby').set(3)

    fp_node = topnet.createNode('filepattern')
    fp_node.parm('pattern').set(texfiles_dir + '/*')

    gg_node = fp_node.createOutputNode('genericgenerator')
    gg_node.parm('pdg_command').set('{} `pdgattribvals("directory")`/`pdgattribvals("filename")`'.format(rs_tex_processor_path))
    
    # tidy layout
    topnet.layoutChildren()

    # execute in background
    gg_node.executeGraph()

make_rs_convert_topnet('/c/path/to/wall.png')