blender/io_mspgl/scene.py

   1 def is_same_object(obj1, obj2):
   2         if obj1.data.name!=obj2.data.name:
   3                 return False
   4         if any(m1.name!=m2.name for m1, m2 in zip(obj1.material_slots, obj2.material_slots)):
   5                 return False
   6
   7         return True
   8
   9 class Instance:
  10         def __init__(self, obj, prototype):
  11                 self.name = obj.name
  12                 self.matrix_world = obj.matrix_world
  13                 self.rotation_mode = obj.rotation_mode
  14                 self.prototype = prototype.name
  15
  16 class Scene:
  17         def __init__(self, scene, obj_filter=None):
  18                 self.name = scene.name
  19                 self.scene_type = scene.scene_type
  20                 self.export_disposition = scene.export_disposition
  21                 self.background_set = None
  22                 self.camera = scene.camera
  23                 self.prototypes = []
  24                 self.instances = []
  25                 self.lights = []
  26
  27                 objects = scene.objects[:]
  28                 objects.sort(key=lambda o:o.name)
  29                 if obj_filter:
  30                         objects = list(filter(obj_filter, objects))
  31
  32                 processed = set()
  33                 for o in objects:
  34                         if o.name in processed:
  35                                 continue
  36
  37                         if o.type=='MESH':
  38                                 clones = [c for c in objects if is_same_object(o, c)]
  39                                 self.prototypes.append(o)
  40                                 for c in clones:
  41                                         self.instances.append(Instance(c, o))
  42                                         processed.add(c.name)
  43                         elif o.type=='LIGHT':
  44                                 self.lights.append(o)
  45
  46         def get_chain(self):
  47                 result = []
  48                 if self.background_set:
  49                         result = self.background_set.get_chain()
  50                 result.append(self)
  51                 return result
  52
  53 def get_all_collections(collection):
  54         result = [collection]
  55         for c in collection.children:
  56                 result += get_all_collections(c)
  57         return result
  58
  59 def create_scene_from_current(context, *, selected_only=False, visible_only=True):
  60         obj_filters = []
  61
  62         if selected_only:
  63                 obj_filters.append(lambda o: o.select_get())
  64
  65         if visible_only:
  66                 visible_names = set()
  67                 for c in get_all_collections(context.view_layer.layer_collection):
  68                         if not c.hide_viewport and not c.collection.hide_viewport:
  69                                 visible_names.update(o.name for o in c.collection.objects)
  70                 obj_filters.append(lambda o: o.name in visible_names)
  71
  72         obj_filter = None
  73         if len(obj_filters)==1:
  74                 obj_filter = obj_filters[0]
  75         if obj_filters:
  76                 obj_filter = lambda o: all(f(o) for f in obj_filters)
  77
  78         return Scene(context.scene, obj_filter)
  79
  80 def create_scene(scene, *, visible_only=True):
  81         obj_filter = None
  82
  83         if visible_only:
  84                 visible_names = set()
  85                 for c in get_all_collections(scene.collection):
  86                         if not c.hide_viewport:
  87                                 visible_names.update(o.name for o in c.objects)
  88                 obj_filter = lambda o: o.name in visible_names
  89
  90         return Scene(scene, obj_filter)
  91
  92 def create_scene_chain(scene, cache, *, visible_only=True):
  93         if cache is None:
  94                 cache = {}
  95
  96         top = None
  97         prev = None
  98         while scene:
  99                 converted = None
 100                 if scene.name in cache:
 101                         converted = cache[scene.name]
 102                 else:
 103                         converted = create_scene(scene, visible_only=visible_only)
 104                         cache[scene.name] = converted
 105
 106                 if not top:
 107                         top = converted
 108                 if prev:
 109                         prev.background_set = converted
 110
 111                 prev = converted
 112                 scene = scene.background_set
 113
 114         return top