Created
September 20, 2012 14:11
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python driven animation using frame_change_pre (handler)
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import bpy | |
import math | |
# for demo it creates a cube if it doesn't exist, | |
# but this can be any existing named object. | |
if not 'Cube' in bpy.data.objects: | |
bpy.ops.mesh.primitive_cube_add() | |
frames_per_revolution = 120.0 | |
step_size = 2*math.pi / frames_per_revolution | |
def set_object_location(n): | |
x = math.sin(n) * 5 | |
y = math.cos(n) * 5 | |
z = 0.0 | |
ob = bpy.data.objects.get("Cube") | |
ob.location = (x, y, z) | |
# every frame change, this function is called. | |
def my_handler(scene): | |
frame = scene.frame_current | |
n = frame % frames_per_revolution | |
if n == 0: | |
set_object_location(n) | |
else: | |
set_object_location(n*step_size) | |
bpy.app.handlers.frame_change_pre.append(my_handler) |
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