This is not really related to BlenderBIM but more to Blender, I was bored this friday and decided to try and learn the Blender python API.
I wanted to start of small by just creating a brick, after I created a brick. I tried creating a brick wall. This was the result. There could be a lot of improvement in the code. Using while loops etc. And probably there are existing add-ons I'm not aware off. But they all seem to be brick wall add-ons for other purposes.
But I thought it would be funny to share this here so maybe I can learn something from others. :-)
Here is the code:
import bpy
import mathutils
from itertools import repeat
mesh_name = "brick"
collection_name = "Collection"
def make_brick_wall(bricks_y_direction, bricks_z_direction, bed_joint, horizontal_joint):
#hardcode coordinates of vertices of brick
vertices_brick = [ (0,0,0),
(0,1,0),
(2.1,1,0),
(2.1,0,0),
(0,0,0.5),
(0,1,0.5),
(2.1,1,0.5),
(2.1,0,0.5)
]
edges = []
faces = [(0,1,2,3),
(4,5,6,7),
(0,4,5,1),
(1,5,6,2),
(2,6,7,3),
(3,7,4,0)
]
new_mesh = bpy.data.meshes.new('brick_mesh')
new_mesh.from_pydata(vertices_brick, edges, faces)
new_mesh.update()
# make object from mesh
new_object = bpy.data.objects.new(mesh_name, new_mesh)
# make collection
new_collection = bpy.data.collections.new(collection_name)
# add object to scene collection
new_collection.objects.link(new_object)
x = 0.0
y = 0.0
z = 0.0
x_vector = (vertices_brick[2][0])/2 #=1.1
z_vector = (vertices_brick[4][2])+bed_joint#=0.6
x_move_list=[]
xyz_list = []
x_move_list.extend(repeat(x_vector,bricks_z_direction))
for b in range (0,len(x_move_list)):
x_move_list.insert(b*2,0)
z_list = [x * z_vector for x in range(0, len(x_move_list))]
#amount of brick in x-direction
for i in range(0,bricks_y_direction):
x += (vertices_brick[2][0]) + horizontal_joint
for x_move, z in zip(x_move_list, z_list):
xyz_list.append([x+x_move, 0.0, z])
add_row(object=new_object, x=x+x_move, y=y, z=z)
def add_row(object, x, y, z):
C = bpy.context
new_object = object
new_obj = new_object.copy()
new_obj.animation_data_clear()
C.collection.objects.link(new_obj)
# one blender unit in x-direction
vec = mathutils.Vector((x, y, z))
inv = new_obj.matrix_world.copy()
inv.invert()
# vector aligned to local axis in Blender 2.8+
vec_rot = vec @ inv
new_obj.location = new_obj.location + vec_rot
make_brick_wall(bricks_y_direction=15,
bricks_z_direction=15,
bed_joint=0.1,
horizontal_joint=0.1)
And ofcourse I tried exporting my brick wall with the BlenderBIM add-on to IFC
