blender/io_mspgl/export_scene.py

   1 import math
   2 import os
   3
   4 class SceneExporter:
   5         def __init__(self):
   6                 self.selected_only = False
   7                 self.visible_collections = True
   8                 self.resource_collection = True
   9                 self.skip_existing = True
  10                 self.show_progress = True
  11
  12         def export_to_file(self, context, out_fn):
  13                 if self.selected_only:
  14                         objs = context.selected_objects
  15                 else:
  16                         objs = context.scene.objects
  17                 if self.visible_collections:
  18                         collections = [c.collection for c in context.view_layer.layer_collection.children if not (c.hide_viewport or c.collection.hide_viewport)]
  19                         objs = [o for o in objs if any((o.name in c.all_objects) for c in collections)]
  20                 objs = [o for o in objs if o.type=="MESH" and not o.lod_for_parent and o.data.vertices]
  21                 objs = [o for o in objs if (not o.compound or o.parent not in objs)]
  22                 objs.sort(key=lambda x:x.name)
  23
  24                 path, base = os.path.split(out_fn)
  25                 base, ext = os.path.splitext(base)
  26
  27                 object_prototypes = {}
  28                 unique_objects = []
  29                 export_names = {}
  30                 used_names = set()
  31                 for o in objs:
  32                         if o.name in object_prototypes:
  33                                 continue
  34
  35                         clones = [o]
  36                         for u in objs:
  37                                 if u is o:
  38                                         continue
  39                                 if u.data.name!=o.data.name:
  40                                         continue
  41                                 if any(m1.name!=m2.name for m1, m2 in zip(o.material_slots, u.material_slots)):
  42                                         continue
  43
  44                                 clones.append(u)
  45
  46                         prefix = o.name
  47                         for c in clones:
  48                                 while not c.name.startswith(prefix):
  49                                         pos = max(prefix.rfind(' '), prefix.rfind('.'))
  50                                         if pos<0:
  51                                                 break;
  52                                         prefix = prefix[:pos]
  53
  54                         if prefix:
  55                                 export_names[o.name+".object"] = prefix.strip(" .")
  56                         else:
  57                                 used_names.add(o.name)
  58
  59                         unique_objects.append(o)
  60                         for c in clones:
  61                                 object_prototypes[c.name] = o
  62
  63                 for n, e in export_names.items():
  64                         if e in used_names:
  65                                 number = 1
  66                                 while "{}_{}".format(e, number) in used_names:
  67                                         number += 1
  68                                 e += "_{}".format(number)
  69                         export_names[n] = e+".object"
  70                         used_names.add(e)
  71
  72                 from .util import Progress
  73                 progress = Progress(self.show_progress and context)
  74
  75                 from .export import DataExporter
  76                 data_exporter = DataExporter()
  77
  78                 resources = {}
  79                 data_exporter.export_resources(context, unique_objects, resources, None, progress)
  80                 for n, r in resources.items():
  81                         if r.name in export_names:
  82                                 r.name = export_names[r.name]
  83
  84                 scene_res = self.export_scene(context, objs, resources, object_prototypes, progress)
  85                 refs = scene_res.collect_references()
  86
  87                 if self.resource_collection:
  88                         filter = None
  89                         if self.skip_existing:
  90                                 filter = lambda r: not os.path.exists(os.path.join(path, r.name))
  91                         scene_res.write_collection(os.path.join(path, base+"_resources.mdc"), exclude_self=True, filter=filter)
  92                 else:
  93                         res_dir = os.path.join(path, base+"_resources")
  94                         if not os.path.exists(res_dir):
  95                                 os.makedirs(res_dir)
  96                         for r in refs:
  97                                 r.write_to_file(os.path.join(res_dir, r.name))
  98
  99                 scene_res.write_to_file(out_fn)
 100
 101         def export_scene(self, context, objs, resources, prototypes, progress):
 102                 from .datafile import Resource, Statement, Token
 103                 scene_res = Resource("scene.scene", "scene")
 104
 105                 scene_res.statements.append(Statement("type", Token(context.scene.scene_type.lower())))
 106
 107                 for o in objs:
 108                         obj_res = resources[prototypes[o.name].name+".object"]
 109                         st = scene_res.create_reference_statement("object", obj_res, o.name)
 110
 111                         ss = Statement("transform")
 112
 113                         loc = o.matrix_world.to_translation()
 114                         ss.sub.append(Statement("position", *tuple(loc)))
 115
 116                         quat = o.matrix_world.to_quaternion()
 117                         if o.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
 118                                 angles = [a*180/math.pi for a in quat.to_euler()]
 119                                 ss.sub.append(Statement("euler", *angles));
 120                         else:
 121                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
 122
 123                         scale = o.matrix_world.to_scale()
 124                         ss.sub.append(Statement("scale", *tuple(scale)))
 125
 126                         st.sub.append(ss)
 127                         scene_res.statements.append(st)
 128
 129                 progress.set_progress(1.0)
 130
 131                 return scene_res