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+# mesh_relax.py Copyright (C) 2010, Fabian Fricke
+#
+# Relaxes selected vertices while retaining the shape as much as possible
+#
+# ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+#
+# ***** END GPL LICENCE BLOCK *****
+
+"""
+
+Usage:
+
+Launch from "W-menu" or from "Mesh -> Vertices -> Relax"
+
+
+Additional links:
+ Author Site: http://frigi.designdevil.de
+ e-mail: frigi.f {at} gmail {dot} com
+
+"""
+
+
+bl_addon_info = {
+ 'name': 'Mesh: Relax',
+ 'author': 'Fabian Fricke',
+ 'version': '1.1 2010/04/22',
+ 'blender': (2, 5, 3),
+ 'location': 'View3D > Specials > Relax ',
+ 'description': 'Relax the selected verts while retaining the shape',
+ 'warning': '', # used for warning icon and text in addons panel
+ 'wiki_url': 'http://wiki.blender.org/index.php/Extensions:2.5/Py/' \
+ 'Scripts/Modeling/Relax',
+ 'tracker_url': 'https://projects.blender.org/tracker/index.php?'\
+ 'func=detail&aid=21421&group_id=153&atid=469',
+ 'category': 'Mesh'}
+
+
+import bpy
+from bpy.props import IntProperty
+
+def relax_mesh(context):
+
+ # deselect everything that's not related
+ for obj in context.selected_objects:
+ obj.select = False
+
+ # get active object
+ obj = context.active_object
+
+ # duplicate the object so it can be used for the shrinkwrap modifier
+ obj.select = True # make sure the object is selected!
+ bpy.ops.object.mode_set(mode='OBJECT')
+ bpy.ops.object.duplicate()
+ target = context.active_object
+
+ # remove all other modifiers from the target
+ for m in range(0, len(target.modifiers)):
+ target.modifiers.remove(target.modifiers[0])
+
+ context.scene.objects.active = obj
+
+ sw = obj.modifiers.new(type='SHRINKWRAP', name='relax_target')
+ sw.target = target
+
+ # run smooth operator to relax the mesh
+ bpy.ops.object.mode_set(mode='EDIT')
+ bpy.ops.mesh.vertices_smooth()
+ bpy.ops.object.mode_set(mode='OBJECT')
+
+ # apply the modifier
+ bpy.ops.object.modifier_apply(modifier='relax_target')
+
+ # delete the target object
+ obj.select = False
+ target.select = True
+ bpy.ops.object.delete()
+
+ # go back to initial state
+ obj.select = True
+ bpy.ops.object.mode_set(mode='EDIT')
+
+class Relax(bpy.types.Operator):
+ '''Relaxes selected vertices while retaining the shape as much as possible'''
+ bl_idname = 'mesh.relax'
+ bl_label = 'Relax'
+ bl_options = {'REGISTER', 'UNDO'}
+
+ iterations = IntProperty(name="Relax iterations",
+ default=1, min=0, max=100, soft_min=0, soft_max=10)
+
+ def poll(self, context):
+ obj = context.active_object
+ return (obj and obj.type == 'MESH')
+
+ def execute(self, context):
+ for i in range(0,self.properties.iterations):
+ relax_mesh(context)
+ return {'FINISHED'}
+
+menu_func = (lambda self, context: self.layout.operator(Relax.bl_idname, text="Relax"))
+
+def register():
+ bpy.types.register(Relax)
+ bpy.types.VIEW3D_MT_edit_mesh_specials.append(menu_func)
+ bpy.types.VIEW3D_MT_edit_mesh_vertices.append(menu_func)
+
+def unregister():
+ bpy.types.unregister(Relax)
+ bpy.types.VIEW3D_MT_edit_mesh_specials.remove(menu_func)
+ bpy.types.VIEW3D_MT_edit_mesh_vertices.remove(menu_func)
+
+if __name__ == "__main__":
+ register()