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# The Initial Developer of the Original Code is Matthias Baas.
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# $Id: noise.py,v 1.3 2006/02/14 19:29:39 mbaas Exp $
"""This module contains various noise functions.
"""
from _core import noise,snoise,cellnoise,scellnoise,fBm,turbulence
from _core import pnoise
from _core import spnoise
from _core import vnoise,vsnoise,vcellnoise,vscellnoise,vfBm,vturbulence
from _core import vpnoise
from _core import vspnoise
from cgtypes import vec3
# pnoise
def pnoise(*args):
"""pnoise(point, period) / pnoise(point, t, pperiod, tperiod) -> float
Periodic noise function. Basically this is the same than noise
but with a periodic return value: pnoise(point) = pnoise(point+period).
The time value can be either part of the point or it can be
specified separately. The point and period must always have the
same dimension. The return value is in the range from 0 to 1.
"""
n = len(args)
if n==2:
v, pv = args
try:
m = len(v)
except:
return _pnoise(v, 0, pv, 1)
if m==1:
return _pnoise(v[0], 0, pv[0], 1)
elif m==2:
x,y = v
px,py = pv
return _pnoise(x,y,px,py)
elif m==3:
x,y,z = v
px,py,pz = pv
return _pnoise(x,y,z,px,py,pz)
elif m==4:
x,y,z,t = v
px,py,pz,pt = pv
return _pnoise(x,y,z,t,px,py,pz,pt)
else:
raise ValueError, "Invalid arguments"
elif n==4:
v,t,pv,pt = args
try:
m = len(v)
except:
return _pnoise(v, t, pv, pt)
if m==1:
return _pnoise(v[0], t, pv[0], pt)
elif m==2:
x,y = v
px,py = pv
return _pnoise(x,y,t,px,py,pt)
elif m==3:
x,y,z = v
px,py,pz = pv
return _pnoise(x,y,z,t,px,py,pz,pt)
else:
raise ValueError, "Invalid arguments"
else:
raise TypeError, "only 2 or 4 arguments allowed"
# spnoise
def spnoise(*args):
"""spnoise(point, period) / spnoise(point, t, pperiod, tperiod) -> float
Signed periodic noise function. The return value is in the range
from -1 to 1. A call to spnoise(args) is equivalent to
2*pnoise(args)-1.
"""
n = len(args)
if n==2:
v, pv = args
try:
m = len(v)
except:
return _spnoise(v, 0, pv, 1)
if m==1:
return _spnoise(v[0], 0, pv[0], 1)
elif m==2:
x,y = v
px,py = pv
return _spnoise(x,y,px,py)
elif m==3:
x,y,z = v
px,py,pz = pv
return _spnoise(x,y,z,px,py,pz)
elif m==4:
x,y,z,t = v
px,py,pz,pt = pv
return _spnoise(x,y,z,t,px,py,pz,pt)
else:
raise ValueError, "Invalid arguments"
elif n==4:
v,t,pv,pt = args
try:
m = len(v)
except:
return _spnoise(v, t, pv, pt)
if m==1:
return _spnoise(v[0], t, pv[0], pt)
elif m==2:
x,y = v
px,py = pv
return _spnoise(x,y,t,px,py,pt)
elif m==3:
x,y,z = v
px,py,pz = pv
return _spnoise(x,y,z,t,px,py,pz,pt)
else:
raise ValueError, "Invalid arguments"
else:
raise TypeError, "only 2 or 4 arguments allowed"
# vpnoise
def vpnoise(*args):
"""vpnoise(point, period) / vpnoise(point, t, pperiod, tperiod) -> noiseval
Periodic noise function. Basically this is the same than vnoise
but with a periodic return value: vpnoise(point) = vpnoise(point+period).
The time value can be either part of the point or it can be
specified separately. The point and period must always have the
same dimension. The components of the return value are in the range
from 0 to 1.
"""
n = len(args)
if n==2:
v, pv = args
try:
m = len(v)
except:
return _vpnoise(v, pv)
if m==1:
return _vpnoise(v[0], pv[0])
elif m==2:
x,y = v
px,py = pv
return _vpnoise(x,y,px,py)
elif m==3:
x,y,z = v
px,py,pz = pv
return _vpnoise(x,y,z,px,py,pz)
elif m==4:
x,y,z,t = v
px,py,pz,pt = pv
return _vpnoise(x,y,z,t,px,py,pz,pt)
else:
raise ValueError, "Invalid arguments"
elif n==4:
v,t,pv,pt = args
try:
m = len(v)
except:
return _vpnoise(v, t, pv, pt)
if m==1:
return _vpnoise(v[0], t, pv[0], pt)
elif m==2:
x,y = v
px,py = pv
return _vpnoise(x,y,t,px,py,pt)
elif m==3:
x,y,z = v
px,py,pz = pv
res = _vpnoise(x,y,z,t,px,py,pz,pt)
return vec3(res.x, res.y, res.z)
else:
raise ValueError, "Invalid arguments"
else:
raise TypeError, "only 2 or 4 arguments allowed"
# vspnoise
def vspnoise(*args):
"""vspnoise(point, period) / vspnoise(point, t, pperiod, tperiod) -> noiseval
Periodic noise function. Basically this is the same than vsnoise
but with a periodic return value: vspnoise(point) = vspnoise(point+period).
The time value can be either part of the point or it can be
specified separately. The point and period must always have the
same dimension. The components of the return value are in the range
from -1 to 1.
"""
n = len(args)
if n==2:
v, pv = args
try:
m = len(v)
except:
return _vspnoise(v, pv)
if m==1:
return _vspnoise(v[0], pv[0])
elif m==2:
x,y = v
px,py = pv
return _vspnoise(x,y,px,py)
elif m==3:
x,y,z = v
px,py,pz = pv
return _vspnoise(x,y,z,px,py,pz)
elif m==4:
x,y,z,t = v
px,py,pz,pt = pv
return _vspnoise(x,y,z,t,px,py,pz,pt)
else:
raise ValueError, "Invalid arguments"
elif n==4:
v,t,pv,pt = args
try:
m = len(v)
except:
return _vspnoise(v, t, pv, pt)
if m==1:
return _vspnoise(v[0], t, pv[0], pt)
elif m==2:
x,y = v
px,py = pv
return _vspnoise(x,y,t,px,py,pt)
elif m==3:
x,y,z = v
px,py,pz = pv
res = _vspnoise(x,y,z,t,px,py,pz,pt)
return vec3(res.x, res.y, res.z)
else:
raise ValueError, "Invalid arguments"
else:
raise TypeError, "only 2 or 4 arguments allowed"
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