Skip to content
Teoti Graphix

Houdini Tips Notes

HOM Tips

Since - Houdini 18.5.x Py3

The below tips are generated from exploring and testing functionality of the HOM (Houdini Object Model).

  • Grab selected node.
  • Get the desktop singleton instance.
  • Query the desktop for the NetworkEditor pane tab.
  • Using API from the nodegraphview package, change the network location using the selected node’s parent as the new destination.
import nodegraphview


node:hou.Node = hou.selectedNodes()[0]
desktop:hou.Desktop = hou.ui.curDesktop()
editor = desktop.paneTabOfType(hou.paneTabType.NetworkEditor)
nodegraphview.changeNetwork(editor, node.parent(), moving_up=True)

HOM Unsorted Tips

Since - Houdini 18.5.x Py3

===== Load .hip file =====

# load(file_name, suppress_save_prompt=False, ignore_load_warnings=False)
hou.hipFile.load('projectFile.hip')

Raises;

  • Raises hou.OperationFailed if Houdini cannot read the file.
  • Raises hou.LoadWarning if loading the new file triggers warnings (such as missing assets).

See;

Save .hip file

# save(file_name=None, save_to_recent_files=True)
hou.hipFile.save('projectFile.hip')

Clear .hip file

# clear(suppress_save_prompt=False)
hou.hipFile.clear()

Merge .hip Files

# merge(file_name, node_pattern="*", overwrite_on_conflict=False, ignore_load_warnings=False)
hou.hipFile.merge()

Raises;

  • hou.LoadWarning
  • hou.OperationFailed

Add Float Parm

kwargs

This example is a bare bones print of the kwargs global session dictionary.

# ShelfTool: create_subnet_hda


def test_KWARGS(kwargs):
print(kwargs)


test_KWARGS(kwargs)


# produces the following, its not scary at all!
# (the data structure is dynamic though, a guessing game of keys...)
{
    'toolname': 'create_subnet_hda',
    'panename': `,
    'altclick': False,
    'ctrlclick': False,
    'shiftclick': False,
    'cmdclick': False,
    'pane': None,
    'viewport': None,
    'inputnodename': `,
    'outputindex': -1,
    'inputs': [],
    'outputnodename': `,
    'inputindex': -1,
    'outputs': [],
    'branch': False,
    'autoplace': False,
    'requestnew': False
}

Network Editor

  • Events are passed to the current context module (nodegraph.py by default), to a function named handleEvent().
  • hou.NetworkEditor.pushEventContext()

HOM Class Notes

HOM hou.Desktop

Since - Houdini 18.5.x Py3

Methods

  • name() → str
  • setAsCurrent()
  • panes() → tuple of hou.Pane
  • floatingPanels() → tuple of hou.FloatingPanel
  • paneTabs() → tuple of hou.PaneTab
  • currentPaneTabs() → tuple of hou.PaneTab
  • floatingPaneTabs() → tuple of hou.PaneTab
  • paneTabOfType(type, index=0) → hou.PaneTab or None
  • findPane(pane_id) → hou.Pane or None
  • findPaneTab(name) → hou.PaneTab or None
  • createFloatingPaneTab(pane_tab_type, position=(), size=(), python_panel_interface=None, immediate=False) → hou.PaneTab
  • createFloatingPanel(pane_tab_type, position=(), size=(), python_panel_interface=None, immediate=False) → hou.FloatingPanel
  • shelfDock() → hou.ShelfDock
  • displayHelp(node_type)
  • displayHelpPath(help_path)
  • displayHelpPyPanel(interface_name)
  • displaySideHelp(show=True) → hou.PaneTab
  • paneUnderCursor()
  • paneTabUnderCursor()

HOM hou.Pane

Since - Houdini 18.5.x Py3

A rectangular area of the desktop that contains one or more pane tabs.

Extends object.

Methods =====

  • TODO