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                 self.use_hdr = False
  28                 if scene.world:
  29                         self.use_hdr = scene.world.use_hdr
  30
  31                 objects = scene.objects[:]
  32                 objects.sort(key=lambda o:o.name)
  33                 if obj_filter:
  34                         objects = list(filter(obj_filter, objects))
  35
  36                 processed = set()
  37                 for o in objects:
  38                         if o.name in processed:
  39                                 continue
  40
  41                         if o.type=='MESH':
  42                                 clones = [c for c in objects if is_same_object(o, c)]
  43                                 self.prototypes.append(o)
  44                                 for c in clones:
  45                                         self.instances.append(Instance(c, o))
  46                                         processed.add(c.name)
  47                         elif o.type=='LIGHT':
  48                                 self.lights.append(o)
  49
  50         def get_chain(self):
  51                 result = []
  52                 if self.background_set:
  53                         result = self.background_set.get_chain()
  54                 result.append(self)
  55                 return result
  56
  57 def get_all_collections(collection):
  58         result = [collection]
  59         for c in collection.children:
  60                 result += get_all_collections(c)
  61         return result
  62
  63 def create_scene_from_current(context, *, selected_only=False, visible_only=True):
  64         obj_filters = []
  65
  66         if selected_only:
  67                 obj_filters.append(lambda o: o.select_get())
  68
  69         if visible_only:
  70                 visible_names = set()
  71                 for c in get_all_collections(context.view_layer.layer_collection):
  72                         if not c.hide_viewport and not c.collection.hide_viewport:
  73                                 visible_names.update(o.name for o in c.collection.objects)
  74                 obj_filters.append(lambda o: o.name in visible_names)
  75
  76         obj_filter = None
  77         if len(obj_filters)==1:
  78                 obj_filter = obj_filters[0]
  79         if obj_filters:
  80                 obj_filter = lambda o: all(f(o) for f in obj_filters)
  81
  82         return Scene(context.scene, obj_filter)
  83
  84 def create_scene(scene, *, visible_only=True):
  85         obj_filter = None
  86
  87         if visible_only:
  88                 visible_names = set()
  89                 for c in get_all_collections(scene.collection):
  90                         if not c.hide_viewport:
  91                                 visible_names.update(o.name for o in c.objects)
  92                 obj_filter = lambda o: o.name in visible_names
  93
  94         return Scene(scene, obj_filter)
  95
  96 def create_scene_chain(scene, cache, *, visible_only=True):
  97         if cache is None:
  98                 cache = {}
  99
 100         top = None
 101         prev = None
 102         while scene:
 103                 converted = None
 104                 if scene.name in cache:
 105                         converted = cache[scene.name]
 106                 else:
 107                         converted = create_scene(scene, visible_only=visible_only)
 108                         cache[scene.name] = converted
 109
 110                 if not top:
 111                         top = converted
 112                 if prev:
 113                         prev.background_set = converted
 114
 115                 prev = converted
 116                 scene = scene.background_set
 117
 118         return top