On 22/08/2017 at 12:14, xxxxxxxx wrote:
Hello PluginCafe,
I have written a small script, which creates supershapes (based on a sphere).
So far so good, I can calculate all the points of my object but I don't know why,
but when it comes to calculating the polygons I just don't get it right.
I know this is not that sdk related or anything, but it's my first time building an object
and it would help me for future reference aswell.
import c4d
import math
from c4d import gui
#Welcome to the world of Python
#constants
a = 1
b = 1
m = 0
n1 = 1
n2 = 1
n3 = 1
def supershapeRAD(theta, m, n1, n2, n3) :
"""Calculates the radius of the supershape from a given theta (lon/lat) and some defined constants"""
t1 = math.fabs((1/a)*math.cos(m*theta/4))
t1 = math.pow(t1, n2)
t2 = math.fabs((1/b)*math.sin(m*theta/4))
t2 = math.pow(t2, n3)
t3 = t1+t2
r = math.pow(t3, -1/n1)
return r
def main() :
total = 20 # number of points
rad = 200 #base radius of the sphere
obj = c4d.PolygonObject(total*total, total*total) #create a new polygon object
counter = 0 #counter for polygons
for i in xrange(total-1) :
lat = c4d.utils.RangeMap(i, 0, total, -math.pi/2, math.pi/2, False) #map latitude to -pi/2 pi/2
r2 = supershapeRAD(lat, m, n1, n2, n3) #calculate first supershape radius
for j in xrange(total) :
lon = c4d.utils.RangeMap(j, 0, total, -math.pi, math.pi, False) #map londitude to -pi pi
r1 = supershapeRAD(lon, m, n1, n2, n3) #calculate second supershape radius
#calculate position (x,y,z) of the points
x = rad *r1* math.cos(lon) * r2*math.cos(lat)
y = rad *r1* math.sin(lon) * r2*math.cos(lat)
z = rad *r2* math.sin(lat)
obj.SetPoint(j+i*total, c4d.Vector(x,y,z)) #set the point
#This is the part that gives me trouble
#obj.SetPolygon(counter, c4d.CPolygon(a,b,c))
counter += 1
obj.Message(c4d.MSG_UPDATE)
doc.InsertObject(obj)
c4d.EventAdd()
if __name__=='__main__':
main()
This is my current code, it is able to calculate the necessary points.
I have already looked into the PyRoundedTube example, but that doesn't really help me.
I hope somebody can help me, because I feel really stupid right now
greetings,
Florian
