def sunflower(scene,nseeds=100,npetals=50):
pos = kernelpositions(nseeds)
headverts=pos2verts(pos)
faces=[(v,v+1,v+2) for v in range(0,len(headverts),3)]
head=Tools.addmeshobject(scene,headverts,faces,name='head')
kernelverts,kernelfaces=kernel(radius=1.5,scale=(1.0,1.0,0.3))
#print len(kernelverts),kernelfaces
kernelmesh = Tools.newmesh(kernelverts,kernelfaces,name='kernel')
kernels = [Tools.addmeshduplicate(scene,kernelmesh,name='kernel') for i in range(nseeds)]
for i in range(nseeds):
#print(kernels[i],head.data.verts[i*3:(i+1)*3])
loc = Tools.center(head.data.verts[i*3:(i+1)*3])
kernels[i].setLocation(loc)
head.makeParentVertex([kernels[i]],tuple([v.index for v in head.data.verts[i*3:(i+1)*3]]))
# add petals (parent to head)
petalverts,petalfaces=petal((2.0,1.0,1.0))
petalmesh = Tools.newmesh(petalverts,petalfaces,name='petal')
r = sqrt(nseeds)
petals = [Tools.addmeshduplicate(scene,petalmesh,name='petal') for i in range(npetals)]
for i,p in enumerate(petals):
a=float(i)*2*pi/npetals
p.setLocation(r*cos(a),r*sin(a),0)
e=p.getEuler('localspace')
e.z=a
p.setEuler(e)
head.makeParent(petals)
# add stalk (parent head to stalk)
stalkverts,stalkfaces=stalk()
stalkob = Tools.addmeshobject(scene,stalkverts,stalkfaces,name='stalk')
stalkob.makeParent([head])
# create a group of kernels and a group of petals for easy scaling
kernelgroup = Blender.Group.New('kernels')
kernelgroup.objects=kernels
petalgroup = Blender.Group.New('petals')
petalgroup.objects=petals
# create a group consisting of all objects
# unfortunately you cannot make a group of groups
all = Blender.Group.New('sunflower')
all.objects=sum([kernels,petals],[head,stalkob]) # trick to flatten lists
