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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 #####
    
    bl_info = {
        "name": "Face info / select by type",
        "author": "CoDEmanX",
        "version": (0, 0, 3),
    
        "blender": (2, 62, 0),
    
        "location": "Properties > Object data > Face info / select",
        "description": "Displays triangle, quad and ngon count of the active object. Allows to select faces by these types.",
    
        "wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/"
    
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            "Scripts/Mesh/Face_Info_Select",
    
        "tracker_url": "https://developer.blender.org/T31926",
    
        "support": 'TESTING',
        "category": "Mesh"
    }
    
    # Written by CoDEmanX for frivus
    
    
    import bpy
    from bpy.props import EnumProperty
    
    class DATA_OP_facetype_select(bpy.types.Operator):
    
        """Select all faces of a certain type"""
    
        bl_idname = "data.facetype_select"
        bl_label = "Select by face type"
        bl_options = {'REGISTER', 'UNDO'}
    
        face_type = EnumProperty(name="Select faces:",
                                 items = (("3","Triangles","Faces made up of 3 vertices"),
                                          ("4","Quads","Faces made up of 4 vertices"),
                                          ("5","Ngons","Faces made up of 5 and more vertices")),
                                 default = "5")
        @classmethod
        def poll(cls, context):
            return context.active_object is not None and context.active_object.type == 'MESH'
    
        def execute(self, context):
    
            bpy.ops.object.mode_set(mode='EDIT')
            bpy.ops.mesh.select_all(action='DESELECT')
            context.tool_settings.mesh_select_mode=(False, False, True)
    
            if self.face_type == "3":
    
                bpy.ops.mesh.select_face_by_sides(number=3, type='EQUAL')
    
                bpy.ops.mesh.select_face_by_sides(number=4, type='EQUAL')
    
                bpy.ops.mesh.select_face_by_sides(number=4, type='GREATER')
    
    
    class DATA_PT_info_panel(bpy.types.Panel):
        """Creates a face info / select panel in the Object properties window"""
        bl_label = "Face info / select"
        bl_idname = "DATA_PT_face_info"
        bl_space_type = "PROPERTIES"
        bl_region_type = "WINDOW"
        bl_context = "data"
    
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        bl_options = {'DEFAULT_CLOSED'}
    
    
        @classmethod
        def poll(self, context):
            return context.active_object is not None and context.active_object.type == 'MESH'
    
        def draw(self, context):
            layout = self.layout
    
            ob = context.active_object
    
            info_str = ""
            tris = quads = ngons = 0
    
            for p in ob.data.polygons:
    
                count = p.loop_total
    
                if count == 3:
                    tris += 1
                elif count == 4:
                    quads += 1
                else:
                    ngons += 1
    
            info_str = "  Ngons: %i  Quads: %i  Tris: %i" % (ngons, quads, tris)
    
            col = layout.column()
            col.label(info_str, icon='MESH_DATA')
    
            col = layout.column()
            col.label("Select faces by type:")
    
            row = layout.row()
            row.operator("data.facetype_select", text="Ngons").face_type = "5"
            row.operator("data.facetype_select", text="Quads").face_type = "4"
            row.operator("data.facetype_select", text="Tris").face_type = "3"
    
    
    def register():
        bpy.utils.register_class(DATA_PT_info_panel)
        bpy.utils.register_class(DATA_OP_facetype_select)
    
    
    def unregister():
        bpy.utils.unregister_class(DATA_PT_info_panel)
        bpy.utils.unregister_class(DATA_OP_facetype_select)
    
    
    if __name__ == "__main__":
        register()