Hermes
dd2a1734eb
- Shelf tool to open/close command port in Houdini - hhb client script (eval, script, get-selected, set-param, etc.) - Hermes skill with standard hou module workflows - Example: create pyro setup - hou module quick reference
2.6 KiB
2.6 KiB
hou Module Quick Reference
Common patterns for the Hermes Bridge.
Selection & Navigation
# Selected nodes
hou.selectedNodes() # → list[hou.Node]
hou.selectedNodes()[0].path() # → '/obj/geo1/box1'
hou.selectedNodes()[0].type().name() # → 'box'
# Find nodes
hou.node('/obj/geo1') # Get by path
hou.node('/obj').children() # All children
hou.node('/obj').recursiveGlob('*box*')# Glob search
# Parent/child
node.parent() # Parent node
node.node('childname') # Named child
Parameters
n = hou.selectedNodes()[0]
# Get/Set
n.parm('tx').eval() # Evaluate value
n.parm('tx').set(5.0) # Set value
n.parm('file').set('/path/to/file') # Set string param
# All non-default parms
[(p.name(), p.eval()) for p in n.parms() if not p.isAtDefault()]
# Existence check
if n.parm('snippet') is not None:
n.parm('snippet').set('@P.y += 1;')
Connections
# Inputs
n.inputConnections() # → tuple of (input_node, output_idx, input_idx)
n.inputConnectors() # Input connector names
n.setInput(0, other_node) # Connect
# Outputs
n.outputConnections() # What connects FROM this node
# Disconnect all inputs
for i in range(len(n.inputConnectors())):
n.setInput(i, None)
Node Creation
parent = hou.node('/obj/geo1')
# Single nodes
box = parent.createNode('box')
null = parent.createNode('null', 'OUT')
# Common types
'geo' # Geometry container
'null' # Null
'attribwrangle' # Attribute Wrangle
'attribvop' # Attribute VOP
'file' # File read (SOP)
'rop_geometry' # Geometry ROP
'switch' # Switch
'merge' # Merge
'transform' # Transform (xform)
'sphere' # Sphere
'grid' # Grid
'scatter' # Scatter
'boolean' # Boolean
'remesh' # Remesh
'polyextrude' # Poly Extrude
'principledshader::2.0' # Material
VEX
wrangle = hou.selectedNodes()[0]
wrangle.parm('snippet').set('''
// Your VEX code here
@P.y += sin(@Frame * 0.1) * 0.5;
@Cd = rand(@ptnum);
''')
Layout
node.moveToGoodPosition() # Auto-layout one node
for n in parent.children():
n.moveToGoodPosition() # Layout all children
Scene Info
hou.hipFile.name() # Current .hip path
hou.hipFile.basename() # Just filename
hou.expandString('$HIP') # Scene directory
hou.hscript('ls /obj') # Raw hscript