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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": (1, 0, 1),
"blender": (2, 73, 0),
"location": "View3D > Tools",
"description": "Make an inset polygon inside selection.",
"warning": "",
"wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/"
"Scripts/Modeling/Inset-Polygon",
"category": "Mesh"}
if "bpy" in locals():
import importlib
else:
from . import (
geom,
model,
offset,
triquad,
)
import math
import bpy
import bmesh
import mathutils
from bpy.props import (
BoolProperty,
EnumProperty,
FloatProperty,
)
class Inset(bpy.types.Operator):
bl_idname = "mesh.insetpoly"
bl_label = "Inset Polygon"
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
obj = bpy.context.active_object
mesh = obj.data
do_inset(mesh, self.inset_amount, self.inset_height, self.region,
self.scale == 'PERCENT')
bpy.context.user_preferences.edit.use_global_undo = save_global_undo
bpy.ops.object.editmode_toggle()
bpy.ops.object.editmode_toggle()
def do_inset(mesh, amount, height, region, as_percent):
if amount <= 0.0:
return
pitch = math.atan(height / amount)
selfaces = []
selface_indices = []
bm = bmesh.from_edit_mesh(mesh)
for face in bm.faces:
if face.select:
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 bm.verts]
for f in selfaces:
m.faces.append([loop.vert.index for loop in f.loops])
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 = m.faces[orig_numf:len(m.faces)]
blender_old_face_index = m.face_data[orig_numf:len(m.faces)]
for i in range(orig_numv, len(m.points.pos)):
bvertnew = bm.verts.new(m.points.pos[i])
bm.verts.index_update()
new_faces = []
start_faces = len(bm.faces)
for i, newf in enumerate(blender_faces):
bm.verts.ensure_lookup_table()
vs = remove_dups([bm.verts[j] for j in newf])
if len(vs) < 3:
continue
# copy face attributes from old face that it was derived from
bfi = blender_old_face_index[i]
if bfi and 0 <= bfi < start_faces:
bm.faces.ensure_lookup_table()
oldface = bm.faces[bfi]
bfacenew = bm.faces.new(vs, oldface)
# bfacenew.copy_from_face_interp(oldface)
else:
bfacenew = bm.faces.new(vs)
# remove original faces
for face in selfaces:
face.select_set(False)
bm.faces.remove(face)
bm.faces.index_update()
# mesh.update(calc_edges=True)
# select all new faces
for face in new_faces:
face.select_set(True)
def remove_dups(vs):
seen = set()
return [x for x in vs if not (x in seen or seen.add(x))]
def panel_func(self, context):
self.layout.label(text="Inset Polygon:")
self.layout.operator("mesh.insetpoly", text="Inset Polygon")
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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