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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ***** END GPL LICENCE BLOCK *****
+
+bl_info = {
+ "name": "Relax",
+ "author": "Fabian Fricke",
+ "version": (1,1),
+ "blender": (2, 5, 7),
+ "api": 35622,
+ "location": "View3D > Specials > Relax ",
+ "description": "Relax the selected verts while retaining the shape",
+ "warning": "",
+ "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",
+ "category": "Mesh"}
+
+"""
+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
+"""
+
+
+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)
+
+ @classmethod
+ def poll(cls, context):
+ obj = context.active_object
+ return (obj and obj.type == 'MESH')
+
+ def execute(self, context):
+ for i in range(0,self.iterations):
+ relax_mesh(context)
+ return {'FINISHED'}
+
+
+def menu_func(self, context):
+ self.layout.operator(Relax.bl_idname, text="Relax")
+
+
+def register():
+ bpy.utils.register_module(__name__)
+
+ bpy.types.VIEW3D_MT_edit_mesh_specials.append(menu_func)
+ bpy.types.VIEW3D_MT_edit_mesh_vertices.append(menu_func)
+
+def unregister():
+ bpy.utils.unregister_module(__name__)
+
+ bpy.types.VIEW3D_MT_edit_mesh_specials.remove(menu_func)
+ bpy.types.VIEW3D_MT_edit_mesh_vertices.remove(menu_func)
+
+if __name__ == "__main__":
+ register()