nurbs surface creation

Coding Python Support
1

hi,

considering the following code snippet found at


import bpy
from mathutils import Vector
 
scene = bpy.context.scene
 
surface_data = bpy.data.curves.new('wook', 'SURFACE')
surface_data.dimensions = '3D'
 
# 16 coordinates, set points per segments (U * V)
points = [
    Vector((-1.5, -1.5, 0.0, 1.0)), Vector((-1.5, -0.5, 0.0, 1.0)),
    Vector((-1.5, 0.5, 0.0, 1.0)), Vector((-1.5, 1.5, 0.0, 1.0)),
    Vector((-0.5, -1.5, 0.0, 1.0)), Vector((-0.5, -0.5, 1.0, 1.0)),
    Vector((-0.5, 0.5, 1.0, 1.0)), Vector((-0.5, 1.5, 0.0, 1.0)),
    Vector((0.5, -1.5, 0.0, 1.0)), Vector((0.5, -0.5, 1.0, 1.0)),
    Vector((0.5, 0.5, 1.0, 1.0)), Vector((0.5, 1.5, 0.0, 1.0)),
    Vector((1.5, -1.5, 0.0, 1.0)), Vector((1.5, -0.5, 0.0, 1.0)),
    Vector((1.5, 0.5, 0.0, 1.0)), Vector((1.5, 1.5, 0.0, 1.0))
]
 
for i in range(0, 16, 4):
    spline = surface_data.splines.new(type='NURBS')
    spline.points.add(3)  # already has a default zero vector
 
    for p, new_co in zip(spline.points, points[i:i+4]):
        p.co = new_co
 
surface_object = bpy.data.objects.new('NURBS_OBJ', surface_data)
scene.objects.link(surface_object)
 
splines = surface_object.data.splines
for s in splines:
    for p in s.points:
        p.select = True
 
bpy.context.scene.objects.active = surface_object
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.curve.make_segment()

this code does what it supposed to do in the latest
blender 2.75a downloaded from blender.org

but if i run it in the latest build from source
( just updated through git )
then this code does not what it’s supposed to do

did things change recently ?

anybody a clue ?

thanks
regards
sc3

2

It runs on 2.73, but just remember as each new version of blender comes out changes can be made to their API. It’s blender API hell in my opinion :wink:

3

thanks

as i said
it even runs in 2.75a which got released a week ago

so i wonder what the new way is :slight_smile: