[Bf-extensions-cvs] SVN commit: /data/svn/bf-extensions [3207] contrib/py/scripts/addons/ mesh_face_info_select.py: Initial commit of a little utility.

[Sebastian Nell]

Revision: 3207
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-extensions&revision=3207
Author:   codemanx
Date:     2012-04-03 23:31:10 +0000 (Tue, 03 Apr 2012)
Log Message:
-----------
Initial commit of a little utility. It displays face type counts in a panel (Object data tab), that being triangles, quads and ngons. Also has 3 buttons to select these faces by their type. Requested by frivus on IRC. To be merged into a similar tool at a later date if found useful.

Added Paths:
-----------
    contrib/py/scripts/addons/mesh_face_info_select.py

Added: contrib/py/scripts/addons/mesh_face_info_select.py
===================================================================
--- contrib/py/scripts/addons/mesh_face_info_select.py	                        (rev 0)
+++ contrib/py/scripts/addons/mesh_face_info_select.py	2012-04-03 23:31:10 UTC (rev 3207)
@@ -0,0 +1,124 @@
+# ##### 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, 6, 2),
+    "location": "Object data > Face info / select",
+    "description": "Displays triangle, quad and ngon count of the active object. Allows to select faces by these type.",
+    "warning": "",
+    "wiki_url": "",
+    "tracker_url": "",
+    "support": 'TESTING',
+    "category": "Mesh"
+}
+
+# Written by CoDEmanX for frivus
+
+
+import bpy
+from bpy.props import EnumProperty
+
+class DATA_OP_facetype_select(bpy.types.Operator):
+    '''Selects 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_by_number_vertices(number=3, type='EQUAL')
+        elif self.face_type == "4":
+            bpy.ops.mesh.select_by_number_vertices(number=4, type='EQUAL')
+        else:
+            bpy.ops.mesh.select_by_number_vertices(number=4, type='GREATER')
+
+        return {'FINISHED'}
+        
+
+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"
+
+    @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 = len(p.loops)
+            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()