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# SPDX-License-Identifier: GPL-2.0-or-later
bl_info = {
"name": "Random Vertices",
"author": "Oscurart, Greg",
"version": (1, 3),
"blender": (2, 63, 0),
"location": "Object > Transform > Random Vertices",
"description": "Randomize selected components of active object",
"warning": "",
"doc_url": "",
"category": "Mesh",
}
import bpy
from bpy.types import Operator
import random
import bmesh
from bpy.props import (
BoolProperty,
FloatProperty,
IntVectorProperty,
)
def add_object(self, context, valmin, valmax, factor, vgfilter):
# select an option with weight map or not
mode = bpy.context.active_object.mode
# generate variables
objact = bpy.context.active_object
listver = []
warn_message = False
# switch to edit mode
bpy.ops.object.mode_set(mode='OBJECT')
bpy.ops.object.mode_set(mode='EDIT')
# bmesh object
odata = bmesh.from_edit_mesh(objact.data)
odata.select_flush(False)
# if the vertex is selected add to the list
for vertice in odata.verts[:]:
if vertice.select:
listver.append(vertice.index)
# If the minimum value is greater than the maximum,
# it adds a value to the maximum
if valmin[0] >= valmax[0]:
valmax[0] = valmin[0] + 1
if valmin[1] >= valmax[1]:
valmax[1] = valmin[1] + 1
if valmin[2] >= valmax[2]:
valmax[2] = valmin[2] + 1
odata.verts.ensure_lookup_table()
random_factor = factor
for vertice in listver:
odata.verts.ensure_lookup_table()
if odata.verts[vertice].select:
if vgfilter is True:
has_group = getattr(objact.data.vertices[vertice], "groups", None)
vertex_group = has_group[0] if has_group else None
vertexweight = getattr(vertex_group, "weight", None)
if vertexweight:
random_factor = factor * vertexweight
else:
random_factor = factor
warn_message = True
odata.verts[vertice].co = (
(((random.randrange(valmin[0], valmax[0], 1)) * random_factor) / 1000) +
odata.verts[vertice].co[0],
(((random.randrange(valmin[1], valmax[1], 1)) * random_factor) / 1000) +
odata.verts[vertice].co[1],
(((random.randrange(valmin[2], valmax[2], 1)) * random_factor) / 1000) +
odata.verts[vertice].co[2]
)
if warn_message:
self.report({'WARNING'},
"Some of the Selected Vertices don't have a Group with Vertex Weight assigned")
bpy.ops.object.mode_set(mode=mode)
class MESH_OT_random_vertices(Operator):
bl_idname = "mesh.random_vertices"
bl_label = "Random Vertices"
bl_description = ("Randomize the location of vertices by a specified\n"
"Multiplier Factor and random values in the defined range\n"
"or a multiplication of them and the Vertex Weights")
bl_options = {'REGISTER', 'UNDO'}
vgfilter: BoolProperty(
name="Vertex Group",
description="Use Vertex Weight defined in the Active Group",
default=False
)
factor: FloatProperty(
name="Factor",
description="Base Multiplier of the randomization effect",
default=1
)
valmin: IntVectorProperty(
name="Min XYZ",
description="Define the minimum range of randomization values",
default=(0, 0, 0)
)
valmax: IntVectorProperty(
name="Max XYZ",
description="Define the maximum range of randomization values",
default=(1, 1, 1)
)
@classmethod
def poll(cls, context):
return (context.object and context.object.type == "MESH" and
context.mode == "EDIT_MESH")
def execute(self, context):
add_object(self, context, self.valmin, self.valmax, self.factor, self.vgfilter)
return {'FINISHED'}
# Registration
def register():
bpy.utils.register_class(MESH_OT_random_vertices)
def unregister():
bpy.utils.unregister_class(MESH_OT_random_vertices)
if __name__ == '__main__':
register()
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