addon to hide linked dupli objects to speedup render times.

space_view3d_library_hide.py

+# ##### 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 #####
+
+# <pep8 compliant>
+
+# Script copyright (C) Campbell Barton
+
+import bpy
+from mathutils import Vector
+from bpy_extras import view3d_utils
+
+LIB_HIDE_TEXT_ID = "blender_hide_objects.py"
+
+LIB_HIDE_TEXT_HEADER = """
+import bpy
+print("running: %r" % __file__)
+def hide(name, lib):
+    obj = bpy.data.objects.get((name, lib))
+    if obj is None:
+        print("hide can't find: %r %r" % (name, lib))
+    else:
+        obj.hide = obj.hide_render = True
+
+"""
+
+def pick_object(context, event, pick_objects, ray_max=10000.0):
+    """Run this function on left mouse, execute the ray cast"""
+    # get the context arguments
+    scene = context.scene
+    region = context.region
+    rv3d = context.region_data
+    coord = event.mouse_region_x, event.mouse_region_y
+
+    # get the ray from the viewport and mouse
+    view_vector = view3d_utils.region_2d_to_vector_3d(region, rv3d, coord)
+    ray_origin = view3d_utils.region_2d_to_origin_3d(region, rv3d, coord)
+    ray_target = ray_origin + (view_vector * ray_max)
+
+    scene.cursor_location = ray_target
+
+    def visible_objects_and_duplis():
+        """Loop over (object, matrix) pairs (mesh only)"""
+
+        for obj in context.visible_objects:  # scene.objects:
+            if obj.hide:
+                continue
+
+            if obj.type == 'MESH':
+                yield (None, obj, obj.matrix_world.copy())
+
+            if obj.dupli_type != 'NONE':
+                print("DupliInst: %r" % obj)
+                obj.dupli_list_create(scene)
+                # matrix = obj.matrix_world.copy()
+                for dob in obj.dupli_list:
+                    obj_dupli = dob.object
+                    if not obj_dupli.hide:
+                        # print("Dupli: %r" % obj_dupli)
+                        if obj_dupli.type == 'MESH':
+                            yield (obj, obj_dupli, dob.matrix.copy())
+
+                obj.dupli_list_clear()
+
+    def obj_ray_cast(obj, matrix):
+        """Wrapper for ray casting that moves the ray into object space"""
+
+        # get the ray relative to the object
+        matrix_inv = matrix.inverted()
+        ray_origin_obj = matrix_inv * ray_origin
+        ray_target_obj = matrix_inv * ray_target
+
+        mesh = obj.data
+        if not mesh.polygons:
+            return None, None, None
+
+        hit, normal, face_index = obj.ray_cast(ray_origin_obj, ray_target_obj)
+
+        if face_index == -1:
+            hit, normal, face_index = obj.ray_cast(ray_target_obj, ray_origin_obj)
+
+        if face_index != -1:
+            return hit, normal, face_index
+        else:
+            return None, None, None
+
+    # cast rays and find the closest object
+    best_length_squared = ray_max * ray_max
+    best_obj = None
+    best_obj_parent = None
+
+    for obj_parent, obj, matrix in visible_objects_and_duplis():
+        if obj.type == 'MESH':
+            hit, normal, face_index = obj_ray_cast(obj, matrix)
+            if hit is not None:
+                length_squared = (hit - ray_origin).length_squared
+                if length_squared < best_length_squared:
+                    best_length_squared = length_squared
+                    best_obj = obj
+                    best_obj_parent = obj_parent
+
+    # now we have the object under the mouse cursor,
+    # we could do lots of stuff but for the example just select.
+    if best_obj is not None:
+        pick_objects.append((best_obj, best_obj.hide, best_obj.hide_render))
+        best_obj.hide = True
+        best_obj.hide_render = True
+        
+        #if best_obj_parent:
+        #    best_obj_parent.update_tag(refresh={'OBJECT'})
+        #scene.update()
+        return True
+    else:
+        print("found none")
+        return False
+
+
+def pick_finalize(context, pick_objects):
+    text = bpy.data.texts.get((LIB_HIDE_TEXT_ID, None))
+    if text is None:
+        text = bpy.data.texts.new(LIB_HIDE_TEXT_ID)
+        text.use_module = True
+        is_new = True
+    else:
+        is_new = False
+
+    if is_new:
+        data = []
+        
+        data += LIB_HIDE_TEXT_HEADER.split("\n")
+    else:
+        data = text.as_string().split("\n")
+
+    data.append("# ---")
+    
+    for pick_obj_tuple in pick_objects:
+        
+        pick_obj = pick_obj_tuple[0]
+        
+        pick_obj.hide = True
+        pick_obj.hide_render = True
+
+        line = "hide(%r, %s)" % (pick_obj.name, repr(pick_obj.library.filepath) if pick_obj.library is not None else "None")
+        data.append(line)
+    
+    text.from_string("\n".join(data))
+
+
+def pick_restore(pick_obj):
+    best_obj, hide, hide_render = pick_obj
+    best_obj.hide = hide
+    best_obj.hide_render = hide_render
+
+
+class ViewOperatorRayCast(bpy.types.Operator):
+    """Modal object selection with a ray cast"""
+    bl_idname = "view3d.modal_operator_raycast"
+    bl_label = "RayCast View Operator"
+
+    _header_text = "Add: LMB, Undo: BackSpace, Finish: Enter"
+
+    def _update_header(self, context):
+        if self.pick_objects:
+            pick_obj = self.pick_objects[-1][0]
+            info_obj = "%s, %s" % (pick_obj.name, pick_obj.library.filepath if pick_obj.library is not None else "None")
+            info = "%s - added: %s" % (ViewOperatorRayCast._header_text, info_obj)
+        else:
+            info = ViewOperatorRayCast._header_text
+
+        context.area.header_text_set(info)
+
+    def modal(self, context, event):
+        if event.type in {'MIDDLEMOUSE', 'WHEELUPMOUSE', 'WHEELDOWNMOUSE'}:
+            # allow navigation
+            return {'PASS_THROUGH'}
+        elif event.type == 'LEFTMOUSE':
+            if event.value == 'RELEASE':
+                if pick_object(context, event, self.pick_objects):
+                    self._update_header(context)
+                return {'RUNNING_MODAL'}
+        elif event.type == 'BACK_SPACE':
+            if event.value == 'RELEASE':
+                if self.pick_objects:
+                    pick_obj = self.pick_objects.pop()
+                    pick_restore(pick_obj)
+                    self._update_header(context)
+
+        elif event.type in {'RET', 'NUMPAD_ENTER'}:
+            if event.value == 'RELEASE':
+                if self.pick_objects:  # avoid enter taking effect on startup
+                    pick_finalize(context, self.pick_objects)
+                    context.area.header_text_set()
+                    self.report({'INFO'}, "Finished")
+                    return {'FINISHED'}
+                
+        elif event.type in {'RIGHTMOUSE', 'ESC'}:
+            if event.value == 'RELEASE':
+                for pick_obj in self.pick_objects:
+                    pick_restore(pick_obj)
+                context.area.header_text_set()
+                self.report({'INFO'}, "Cancelled")
+                return {'CANCELLED'}
+
+        return {'RUNNING_MODAL'}
+
+    def invoke(self, context, event):
+        if context.space_data.type == 'VIEW_3D':
+            
+            self.pick_objects = []
+            self._update_header(context)
+
+            context.window_manager.modal_handler_add(self)
+            return {'RUNNING_MODAL'}
+        else:
+            self.report({'WARNING'}, "Active space must be a View3d")
+            return {'CANCELLED'}
+
+
+def register():
+    bpy.utils.register_class(ViewOperatorRayCast)
+
+
+def unregister():
+    bpy.utils.unregister_class(ViewOperatorRayCast)
+
+
+if __name__ == "__main__":
+    register()