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polygon_generator.py
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polygon_generator.py
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import bpy, os, random
import math
import mathutils
# script to generate 2D polygon at the center of the world, in the X Y plane
# with hole ( hole != 0 ) or without ( hole = 0 )
# notice:
# - hole is relative to the size: 0.5 means 50% of the size
# - if hole is 1, nothing is added...
# - if hole is bigger than 1, the size of the hole is the size value!
# trianglefaces is used only if:
# - there is no hole and there is four points
# - there is a hole
# startatzero should be set to false when you set a even number of faces
# -> the shape will be parallell to x & y axis
# by frankiezafe.org
## config
pointnum = 6
size = 1
hole = 0.2
startatzero = False
trianglefaces = False
## active code
me = bpy.data.meshes.new('polygon')
ob = bpy.data.objects.new('polygon', me)
ob.select = True
scn = bpy.context.scene
scn.objects.link(ob)
scn.objects.active = ob
verts = []
faces = []
a = 0
gapa = math.pi * 2 / pointnum
if startatzero is not True:
a = gapa * 0.5
vindex = 0
v = 0
if pointnum > 2 and hole is not 1:
for i in range( 0, pointnum ):
v = mathutils.Vector(( math.cos(a) * size * 0.5, math.sin(a) * size * 0.5, 0 ))
verts.append( v )
a += gapa
if hole == 0:
if pointnum == 3:
faces.append( [ 0,1,2 ] )
elif pointnum == 4:
if trianglefaces is True:
faces.append( [ 0,1,2 ] )
faces.append( [ 2,3,0 ] )
else:
faces.append( [ 0,1,2,3 ] )
if pointnum > 4:
v = mathutils.Vector(( 0,0,0 ))
verts.append( v )
for p in range( 0, pointnum ):
pp = p+1
if p == pointnum-1:
pp = 0
faces.append( [ p,pp, pointnum ] )
else:
if startatzero is not True:
a = gapa * 0.5
hs = hole * size
for i in range( 0, pointnum ):
v = mathutils.Vector(( math.cos(a) * hs * 0.5, math.sin(a) * hs * 0.5, 0 ))
verts.append( v )
a += gapa
for p in range( 0, pointnum ):
pp = p+1
if p == pointnum-1:
pp = 0
p1 = p + pointnum
pp1 = pp + pointnum
if trianglefaces is True:
faces.append( [ p,pp,pp1 ] )
faces.append( [ pp1,p1,p ] )
else:
faces.append( [ p,pp,pp1,p1 ] )
me.from_pydata( verts, [], faces )