On 17/08/2015 at 08:18, xxxxxxxx wrote:
User Information:
Cinema 4D Version: R16.050
Platform: Mac ; Mac OSX ;
Language(s) :
---------
Hello all,
Within c4d.utils.splinehelp, the following functions seem to be wrongly implemented:
GetNormal: gives Tangent
GetTangent: gives CrossNormal
GetCrossNormal: gives Normal
Not an urgent issue, because all functions are there, they just don't seem to have the right name.
A piece of code in which this became evident is attached below. It should be executed from a python generator, with a spline as its child.
kind regards,
Hermen
PS: if this code is going to be updated, a nice extra feature would be the GetMatrix function as described below, which evaluates the matrix at any given offset.
################# python code ###################
import c4d
import math as m
#Welcome to the world of Python
def GetMatrix(offset, segment, sh) :
m1 = c4d.Matrix()
"""
the following functions seem to be wrongly implemented:
GetNormal gives Tangent
GetTangent gives CrossNormal
GetCrossNormal gives Normal
"""
m1.off = sh.GetPosition(offset, segment, realoffset=True)
m1.v2 = sh.GetTangent(offset, segment, realoffset=True)
m1.v3 = sh.GetNormal(offset, segment, realoffset=True) # not needed
m1.v1 = sh.GetCrossNormal(offset, segment, realoffset=True)
return m1
def main() :
spl = op.GetDown() # original spline
sh = c4d.utils.SplineHelp()
sh.InitSpline(spl)
N = 2 * m.pi * 100 # op[c4d.ID_USERDATA,1] # N windings
R = 10 # op[c4d.ID_USERDATA,2] # Radius
reverse = False #op[c4d.ID_USERDATA,3]
phase = 0. # op[c4d.ID_USERDATA,4]
d = 6 * N # density
if reverse: N = -N
newspl = c4d.SplineObject(d+1, 4)
pts = range(d+1)
for i in pts:
#print i
p = float(i)/d
m0 = GetMatrix(p, 0, sh=sh)
t = N * p + phase
v = R * c4d.Vector(m.cos(t), m.sin(t), 0)
pts _= m0*v
if i==10000:
disc = c4d.BaseObject(c4d.Odisc)
disc[c4d.PRIM_AXIS] = 4 # z = tangent
disc.SetMg(m0)
disc.InsertUnder(newspl)
newspl.SetAllPoints(pts)
return newspl