diff options
author | Bastien Montagne <montagne29@wanadoo.fr> | 2015-09-15 12:54:03 +0300 |
---|---|---|
committer | Bastien Montagne <montagne29@wanadoo.fr> | 2015-09-15 12:54:03 +0300 |
commit | 0eef469a5d444f396152376a49d7faad0ba51aba (patch) | |
tree | fcf01ed19b00f42e1ac7ad275a970faf66d29349 /mesh_custom_normals_tools.py | |
parent | 4ac0fa2ac50863f4884b1ee0003a37c50fa93329 (diff) |
Add new addon to gather some custom normals basic editing tools, for until we add real support for that in BMesh.v2.76-rc1
For now, only contains an op to flip custom normals (together with other normals).
Related to T46115.
Diffstat (limited to 'mesh_custom_normals_tools.py')
-rw-r--r-- | mesh_custom_normals_tools.py | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/mesh_custom_normals_tools.py b/mesh_custom_normals_tools.py new file mode 100644 index 00000000..462b7609 --- /dev/null +++ b/mesh_custom_normals_tools.py @@ -0,0 +1,90 @@ +# ***** 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 LICENCE BLOCK ***** + +bl_info = { + "name": "Custom Normals Tools", + "author": "Bastien Montagne (mont29)", + "version": (0, 0, 1), + "blender": (2, 75, 0), + "location": "3DView > Tools", + "description": "Various tools/helpers for custom normals", + "warning": "", + "support": 'OFFICIAL', + "category": "Mesh", +} + + +import bpy + + +class MESH_OT_flip_custom_normals(bpy.types.Operator): + """Flip active mesh's normals, including custom ones (only in Object mode)""" + bl_idname = "mesh.flip_custom_normals" + bl_label = "Flip Custom Normals" + bl_options = {'UNDO'} + + @classmethod + def poll(cls, context): + return context.object and context.object.type == 'MESH' and context.object.mode == 'OBJECT' + + def execute(self, context): + me = context.object.data + + if me.has_custom_normals: + me.calc_normals_split() + clnors = [0.0] * 3 * len(me.loops) + me.loops.foreach_get("normal", clnors) + + bpy.ops.object.mode_set(mode='EDIT') + bpy.ops.mesh.select_all(action='SELECT') + bpy.ops.mesh.flip_normals() + bpy.ops.object.mode_set(mode='OBJECT') + + me = context.object.data + if me.has_custom_normals: + clnors[:] = list(zip(*[(-n for n in clnors)] * 3)) + # We also have to take in account that the winding was reverted... + for p in me.polygons: + ls = p.loop_start + 1 + le = ls + p.loop_total - 1 + clnors[ls:le] = reversed(clnors[ls:le]) + me.normals_split_custom_set(clnors) + + context.scene.update() + return {'FINISHED'} + + +def flip_custom_normals_draw_func(self, context): + if isinstance(self, bpy.types.Panel): + self.layout.label("Custom Normal Tools:") + self.layout.operator(MESH_OT_flip_custom_normals.bl_idname) + + +def register(): + bpy.utils.register_module(__name__) + bpy.types.VIEW3D_PT_tools_object.append(flip_custom_normals_draw_func) + + +def unregister(): + bpy.types.VIEW3D_PT_tools_object.remove(flip_custom_normals_draw_func) + bpy.utils.unregister_module(__name__) + + +if __name__ == "__main__": + register() |