Trying Blender as a procedural modelling tool

Scripting in Blender with Python, and working on the API

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Joined: Tue Feb 12, 2013 11:36 am

Trying Blender as a procedural modelling tool

Post by panekko » Tue Feb 12, 2013 12:02 pm

Hi every one,

I'm interested in using a 3D authoring tool to generate structures algorithmically, and since Blender provides a python API i wanted to give it a try.

I managed to create a grid of cubes with different dimensions and rotations using this script:

Code: Select all

from random import randrange
import random
import bpy

add_cube = bpy.ops.mesh.primitive_cube_add
mylayers = [False]*20
mylayers[0] = True
for indexX in range(0, 10):
    for indexY in range(0, 10):
        for indexZ in range(0, 10):        
            location = indexX, indexY, indexZ
            rotation = randrange(-10,10), randrange(-10,10), randrange(-10,10)
            dimensions = random.random(), random.random(), random.random()
            cube = add_cube(location=(location), rotation=(rotation), layers=mylayers)
            cube = bpy.context.object
            cube.dimensions = dimensions

It generates the cubes as expected, but it takes A LOT of time to do so (about 30 seconds). Is it normal to take this long? (I'm not refering to rendering but to the actual objects creation).

BTW, I'm using the nested loops for simplicity, but I have the same problem (regarding execution time) if i use a single loop and, let's say, random positions.

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