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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
import bpy
def create_and_link_mesh(name, faces, points):
'''
Create a blender mesh and object called name from a list of
*points* and *faces* and link it in the current scene.
'''
mesh = bpy.data.meshes.new(name)
mesh.from_pydata(points, [], faces)
ob = bpy.data.objects.new(name, mesh)
bpy.context.scene.objects.link(ob)
# update mesh to allow proper display
mesh.validate()
mesh.update()
def faces_from_mesh(ob, apply_modifier=False, triangulate=True):
'''
From an object, return a generator over a list of faces.
Each faces is a list of his vertexes. Each vertex is a tuple of
his coordinate.
apply_modifier
Apply the preview modifier to the returned liste
triangulate
Split the quad into two triangles
'''
# get the modifiers
try:
mesh = ob.to_mesh(bpy.context.scene, apply_modifier, "PREVIEW")
except RuntimeError:
return ()
if triangulate:
# From a list of faces, return the face triangulated if needed.
def iter_face_index():
for face in mesh.faces:
vertices = face.vertices[:]
if len(vertices) == 4:
yield vertices[0], vertices[1], vertices[2]
yield vertices[2], vertices[3], vertices[0]
else:
yield vertices
else:
def iter_face_index():
for face in mesh.faces:
yield face.vertices[:]
return ([(mesh.vertices[index].co * ob.matrix_world)[:]
for index in indexes] for indexes in iter_face_index())
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