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# ##### 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 #####
# <pep8 compliant>
bl_info = {
"name": "Inset Polygon",
"author": "Howard Trickey",
"version": (0, 3),
"blender": (2, 5, 7),
"api": 36147,
"location": "View3D > Tools",
"description": "Make an inset polygon inside selection.",
"warning": "",
"wiki_url": \
"http://wiki.blender.org/index.php/Extensions:2.5/Py/Scripts/Modeling/Inset-Polygon",
"tracker_url": \
"http://projects.blender.org/tracker/index.php?func=detail&aid=27290&group_id=153&atid=468",
"category": "Mesh"}
if "bpy" in locals():
import imp
else:
from . import geom
from . import model
from . import offset
from . import triquad
import math
import bpy
import mathutils
from bpy.props import *
class Inset(bpy.types.Operator):
bl_idname = "mesh.inset"
bl_label = "Inset"
bl_description = "Make an inset polygon inside selection"
bl_options = {'REGISTER', 'UNDO'}
inset_amount = FloatProperty(name="Amount",
description="Amount to move inset edges",
default=5.0,
min=0.0,
max=1000.0,
soft_min=0.0,
soft_max=100.0,
unit='LENGTH')
inset_height = FloatProperty(name="Height",
description="Amount to raise inset faces",
default=0.0,
min=-10000.0,
max=10000.0,
soft_min=-500.0,
soft_max=500.0,
unit='LENGTH')
region = BoolProperty(name="Region",
description="Inset selection as one region?",
default=True)
scale = EnumProperty(name="Scale",
description="Scale for amount",
items=[
('PERCENT', "Percent",
"Percentage of maximum inset amount"),
('ABSOLUTE', "Absolute",
"Length in blender units")
],
default='PERCENT')
@classmethod
def poll(cls, context):
obj = context.active_object
return (obj and obj.type == 'MESH' and context.mode == 'EDIT_MESH')
def draw(self, context):
layout = self.layout
box = layout.box()
box.label("Inset Options")
box.prop(self, "scale")
box.prop(self, "inset_amount")
box.prop(self, "inset_height")
box.prop(self, "region")
def invoke(self, context, event):
self.action(context)
return {'FINISHED'}
def execute(self, context):
self.action(context)
return {'FINISHED'}
def action(self, context):
save_global_undo = bpy.context.user_preferences.edit.use_global_undo
bpy.context.user_preferences.edit.use_global_undo = False
bpy.ops.object.mode_set(mode='OBJECT')
obj = bpy.context.active_object
mesh = obj.data
do_inset(mesh, self.inset_amount, self.inset_height, self.region,
self.scale == 'PERCENT')
bpy.ops.object.mode_set(mode='EDIT')
bpy.context.user_preferences.edit.use_global_undo = save_global_undo
def do_inset(mesh, amount, height, region, as_percent):
if amount <= 0.0:
return
pitch = math.atan(height / amount)
selfaces = []
selface_indices = []
for face in mesh.faces:
if face.select and not face.hide:
selfaces.append(face)
selface_indices.append(face.index)
m = geom.Model()
# if add all mesh.vertices, coord indices will line up
# Note: not using Points.AddPoint which does dup elim
# because then would have to map vertices in and out
m.points.pos = [v.co.to_tuple() for v in mesh.vertices]
for f in selfaces:
m.faces.append(list(f.vertices))
m.face_data.append(f.index)
orig_numv = len(m.points.pos)
orig_numf = len(m.faces)
model.BevelSelectionInModel(m, amount, pitch, True, region, as_percent)
if len(m.faces) == orig_numf:
# something went wrong with Bevel - just treat as no-op
return
# blender_faces: newfaces but all 4-tuples and no 0
# in 4th position if a 4-sided poly
blender_faces = []
blender_old_face_index = []
for i in range(orig_numf, len(m.faces)):
f = m.faces[i]
if len(f) == 3:
blender_faces.append(list(f) + [0])
blender_old_face_index.append(m.face_data[i])
elif len(f) == 4:
if f[3] == 0:
blender_faces.append([f[3], f[0], f[1], f[2]])
else:
blender_faces.append(f)
blender_old_face_index.append(m.face_data[i])
num_new_vertices = len(m.points.pos) - orig_numv
mesh.vertices.add(num_new_vertices)
for i in range(orig_numv, len(m.points.pos)):
mesh.vertices[i].co = mathutils.Vector(m.points.pos[i])
start_faces = len(mesh.faces)
mesh.faces.add(len(blender_faces))
for i, newf in enumerate(blender_faces):
mesh.faces[start_faces + i].vertices_raw = newf
# copy face attributes from old face that it was derived from
bfi = blender_old_face_index[i]
if bfi and 0 <= bfi < start_faces:
bfacenew = mesh.faces[start_faces + i]
bface = mesh.faces[bfi]
bfacenew.material_index = bface.material_index
bfacenew.use_smooth = bface.use_smooth
mesh.update(calc_edges=True)
# remove original faces
bpy.ops.object.mode_set(mode='EDIT')
save_select_mode = bpy.context.tool_settings.mesh_select_mode
bpy.context.tool_settings.mesh_select_mode = [False, False, True]
bpy.ops.mesh.select_all(action='DESELECT')
bpy.ops.object.mode_set(mode='OBJECT')
for fi in selface_indices:
mesh.faces[fi].select = True
bpy.ops.object.mode_set(mode='EDIT')
bpy.ops.mesh.delete(type='FACE')
bpy.context.tool_settings.mesh_select_mode = save_select_mode
def panel_func(self, context):
self.layout.label(text="Inset:")
self.layout.operator("mesh.inset", text="Inset")
def register():
bpy.utils.register_class(Inset)
bpy.types.VIEW3D_PT_tools_meshedit.append(panel_func)
def unregister():
bpy.utils.unregister_class(Inset)
bpy.types.VIEW3D_PT_tools_meshedit.remove(panel_func)
if __name__ == "__main__":
register()
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