HOM/SOP_HOMWave.py

#
# Copyright (c) 2013
#       Side Effects Software Inc.  All rights reserved.
#
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# following conditions are met:
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#----------------------------------------------------------------------------
# This SOP provides an example of a SOP implemented in Python.
#

"""This is the Python equivalent of SOP_HOMWave.C which uses the C++ API.

To use this code,
    1) In Houdini, choose File -> New Operator Type
    2) Choose "Python Type"
    3) Choose the network type as "Geometry Operator"
    4) Paste this code in the "Code" tab of the type properties.

@see SOP_HOMWaveInlinecpp, SOP_HOMWave, SOP_CPPWave, vex_wave()
"""

import math

geo = hou.pwd().geometry()
f = hou.frame() * 0.03
for p in geo.points():
    pos = p.position()
    pos[1] = math.sin(pos[0] * 0.2 + pos[2] * 0.3 + f)
    p.setPosition(pos)