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# Copyright (C) 2011, Dolf Veenvliet
# Extrude a selection from a mesh multiple times
# ##### BEGIN GPL LICENSE BLOCK #####
#
# 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 2
# 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.
#
# ##### END GPL LICENSE BLOCK #####
"""
Usage:
Select all items whose normals face a certain direction
Additional links:
Author Site: http://www.macouno.com
e-mail: dolf {at} macouno {dot} com
"""
import bpy
from bpy.types import Operator
from mathutils import Vector
from math import radians
from bpy.props import (
FloatVectorProperty,
FloatProperty,
BoolProperty,
EnumProperty,
)
class Select_by_direction():
# Initialise the class
def __init__(self, context, direction, divergence, extend, space):
self.ob = context.active_object
bpy.ops.object.mode_set(mode='OBJECT')
self.space = space
# if we do stuff in global space we need to object matrix
if self.space == 'GLO':
# TODO: not sure if this is the correct way to solve the crash - lijenstina
mat = self.ob.matrix_world
mat_rot = mat.to_3x3().inverted()
direction = mat_rot * Vector(direction)
else:
direction = Vector(direction)
direction = direction.normalized()
vertSelect = bpy.context.tool_settings.mesh_select_mode[0]
edgeSelect = bpy.context.tool_settings.mesh_select_mode[1]
faceSelect = bpy.context.tool_settings.mesh_select_mode[2]
if Vector(direction).length:
# Vert select
if vertSelect:
hasSelected = self.hasSelected(self.ob.data.vertices)
for v in self.ob.data.vertices:
normal = v.normal
s = self.selectCheck(v.select, hasSelected, extend)
d = self.deselectCheck(v.select, hasSelected, extend)
if s or d:
angle = direction.angle(normal)
# Check if the verts match any of the directions
if s and angle <= divergence:
v.select = True
if d and angle > divergence:
v.select = False
# Edge select
if edgeSelect:
hasSelected = self.hasSelected(self.ob.data.edges)
for e in self.ob.data.edges:
s = self.selectCheck(e.select, hasSelected, extend)
d = self.deselectCheck(e.select, hasSelected, extend)
# Check if the edges match any of the directions
if s or d:
normal = self.ob.data.vertices[e.vertices[0]].normal
normal += self.ob.data.vertices[e.vertices[1]].normal
angle = direction.angle(normal)
if s and angle <= divergence:
e.select = True
if d and angle > divergence:
e.select = False
# Face select
if faceSelect:
hasSelected = self.hasSelected(self.ob.data.polygons)
# Loop through all the given faces
for f in self.ob.data.polygons:
s = self.selectCheck(f.select, hasSelected, extend)
d = self.deselectCheck(f.select, hasSelected, extend)
if s or d:
angle = direction.angle(f.normal)
# Check if the faces match any of the directions
if s and angle <= divergence:
f.select = True
if d and angle > divergence:
f.select = False
bpy.ops.object.mode_set(mode='EDIT')
# See if the current item should be selected or not
def selectCheck(self, isSelected, hasSelected, extend):
# If the current item is not selected we may want to select
if not isSelected:
# If we are extending or nothing is selected we want to select
if extend or not hasSelected:
return True
return False
# See if the current item should be deselected or not
def deselectCheck(self, isSelected, hasSelected, extend):
# If the current item is selected we may want to deselect
if isSelected:
# If something is selected and we're not extending we want to deselect
if hasSelected and not extend:
return True
return False
# See if there is at least one selected item
def hasSelected(self, items):
for item in items:
if item.select:
return True
return False
class Select_init(Operator):
bl_idname = "mesh.select_by_direction"
bl_label = "Select by direction"
bl_description = ("Select all items with normals facing a certain direction,\n"
"defined by a vector with coordinates X, Y, Z")
bl_options = {'REGISTER', 'UNDO'}
direction = FloatVectorProperty(
name="Direction",
description="Define a vector from the inputs axis X, Y, Z\n"
"Used to define the normals direction",
default=(0.0, 0.0, 1.0),
min=-100.0, max=100.0,
soft_min=-10.0, soft_max=10.0,
step=100,
precision=2
)
divergence = FloatProperty(
name="Divergence",
description="The number of degrees the selection may differ from the Vector\n"
"(Input is converted to radians)",
default=radians(30.0),
min=0.0, max=radians(360.0),
soft_min=0.0, soft_max=radians(360.0),
step=radians(5000),
precision=2,
subtype='ANGLE'
)
extend = BoolProperty(
name="Extend",
description="Extend the current selection",
default=False
)
# The spaces we use
spaces = (('LOC', 'Local', ''), ('GLO', 'Global', ''))
space = EnumProperty(
items=spaces,
name="Space",
description="The space to interpret the directions in",
default='LOC'
)
@classmethod
def poll(cls, context):
obj = context.active_object
return (obj and obj.type == 'MESH')
def execute(self, context):
Select_by_direction(context, self.direction, self.divergence, self.extend, self.space)
return {'FINISHED'}
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