#----------------------------------------------------------
# add mirror modifier
#----------------------------------------------------------

bl_info = {
    "name": "add mirror modifier",
    "author": "ishidourou",
    "version": (1, 0),
    "blender": (2, 65, 0),
    "location": "View3D > Object",
    "description": "Add Mirror Modifier",
    "warning": "",
    "wiki_url": "",
    "tracker_url": "",
    "category": "Object"}


import bpy
from math import *
 
#
#    Menu in tools region
#
class ToolsPanel(bpy.types.Panel):
    bl_label = "Add Mirror Modifier"
    bl_space_type = "VIEW_3D"
    bl_region_type = "TOOLS"
 
    def draw(self, context):
        self.layout.operator("add.mirror")


#
#    The AddMirrorModifier button prints a message in the console
#
class OBJECT_OT_AmmButton(bpy.types.Operator):
    bl_idname = "add.mirror"
    bl_label = "Add"
    bl_options = {'REGISTER'}
    
    def execute(self, context):
        obj = bpy.ops.object
        cobj = bpy.context.object
        mesh = cobj.data

        obj.mode_set(mode='EDIT')
        bpy.ops.mesh.select_all(action='DESELECT')
        obj.mode_set(mode='OBJECT')

        for vertex in mesh.vertices:
            if (vertex.co.x < -0.000001):
                vertex.select = True
        #obj.mode_set(mode='OBJECT')

        obj.mode_set(mode='EDIT')
        bpy.ops.mesh.delete(type='VERT')
        #obj.mode_set(mode='OBJECT')

        bpy.ops.object.modifier_add(type='MIRROR')
        print('finished!')
        
        return{'FINISHED'}    
 
#
#	Registration
#   All panels and operators must be registered with Blender; otherwise
#   they do not show up. The simplest way to register everything in the
#   file is with a call to bpy.utils.register_module(__name__).
#

def register():
    bpy.utils.register_class(OBJECT_OT_AmmButton)
    bpy.utils.register_module(__name__)

def unregister():
    bpy.utils.unregister_class(OBJECT_OT_AmmButton)
    bpy.utils.unregister_module(__name__)

if __name__ == "__main__":
    register()