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addparticlesystem.py
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addparticlesystem.py
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# addparticlesystem.py
#
# (c) 2017 Michel Anders
#
# 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 3 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.
import bpy
from bpy.props import StringProperty
from random import randint
bl_info = {
"name": "Add particle system",
"author": "Michel Anders (varkenvarken)",
"version": (0, 0, 201701141632),
"blender": (2, 78, 0),
"location": "View3D > Object > Add particle system",
"description": "Add a particle system with 100 particles",
"category": "Experimental development"}
class AddParticlesOp(bpy.types.Operator):
bl_idname = 'mesh.addparticlesystem'
bl_label = 'Add particle system'
bl_options = {'REGISTER', 'UNDO'}
@classmethod
def poll(self, context):
return (context.mode == 'OBJECT')
def execute(self, context):
settings = 'Particles100'
if settings not in bpy.data.particles:
settings = bpy.data.particles.new(settings)
else:
settings = bpy.data.particles[settings]
settings.count = 100
ob = context.active_object
if ob:
# a particle system is a modifier! However, we
# cannot alter properties of this modifier
pm = ob.modifiers.new('Particles','PARTICLE_SYSTEM')
if pm: # could be None if object is Camera or something
# some things are controlled by the system
# for instanc the random seed
pm.particle_system.seed = randint(0,1000000)
# other by the settings, which is a seperate
# object that can be shared by different
# particle systems
pm.particle_system.settings = settings
return {"FINISHED"}
def menu_func(self, context):
self.layout.operator(
AddParticlesOp.bl_idname,
text=AddParticlesOp.bl_label,
icon='PLUGIN')
def register():
bpy.utils.register_module(__name__)
bpy.types.VIEW3D_MT_object.append(menu_func)
def unregister():
bpy.types.VIEW3D_MT_object.remove(menu_func)
bpy.utils.unregister_module(__name__)