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]
  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                 from .export_object import ObjectExporter
  28                 object_export = ObjectExporter()
  29
  30                 object_prototypes = {}
  31                 unique_objects = []
  32                 export_names = {}
  33                 used_names = set()
  34                 for o in objs:
  35                         if o.name in object_prototypes:
  36                                 continue
  37
  38                         clones = [o]
  39                         for u in objs:
  40                                 if u is o:
  41                                         continue
  42                                 if u.data.name!=o.data.name:
  43                                         continue
  44                                 if any(m1.name!=m2.name for m1, m2 in zip(o.material_slots, u.material_slots)):
  45                                         continue
  46
  47                                 clones.append(u)
  48
  49                         prefix = o.name
  50                         for c in clones:
  51                                 while not c.name.startswith(prefix):
  52                                         pos = max(prefix.rfind(' '), prefix.rfind('.'))
  53                                         if pos<0:
  54                                                 break;
  55                                         prefix = prefix[:pos]
  56
  57                         if prefix:
  58                                 export_names[o.name+".object"] = prefix.strip(" .")
  59                         else:
  60                                 used_names.add(o.name)
  61
  62                         unique_objects.append(o)
  63                         for c in clones:
  64                                 object_prototypes[c.name] = o
  65
  66                 for n, e in export_names.items():
  67                         if e in used_names:
  68                                 number = 1
  69                                 while "{}_{}".format(e, number) in used_names:
  70                                         number += 1
  71                                 e += "_{}".format(number)
  72                         export_names[n] = e+".object"
  73                         used_names.add(e)
  74
  75                 from .util import Progress
  76                 progress = Progress(self.show_progress and context)
  77
  78                 resources = {}
  79                 self.export_scene_resources(context, unique_objects, resources, 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, progress, prototypes=object_prototypes, resources=resources)
  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_resources(self, context, objs, resources, progress):
 102                 from .export_object import ObjectExporter
 103                 object_export = ObjectExporter()
 104                 object_export.single_file = False
 105
 106                 material_atlases = {}
 107
 108                 for i, o in enumerate(objs):
 109                         progress.push_task_slice(o.name, i, len(objs))
 110                         object_export.export_object_resources(context, o, resources, progress, material_atlases=material_atlases)
 111                         obj_name = o.name+".object"
 112                         resources[obj_name] = object_export.export_object(context, o, progress, resources=resources)
 113                         progress.pop_task()
 114
 115         def export_scene(self, context, objs, progress, *, prototypes, resources):
 116                 from .datafile import Resource, Statement
 117                 scene_res = Resource("scene.scene", "scene")
 118
 119                 for o in objs:
 120                         obj_res = resources[prototypes[o.name].name+".object"]
 121                         st = scene_res.create_reference_statement("object", obj_res, o.name)
 122
 123                         ss = Statement("transform")
 124
 125                         loc = o.matrix_world.to_translation()
 126                         ss.sub.append(Statement("position", *tuple(loc)))
 127
 128                         quat = o.matrix_world.to_quaternion()
 129                         if o.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
 130                                 angles = [a*180/math.pi for a in quat.to_euler()]
 131                                 ss.sub.append(Statement("euler", *angles));
 132                         else:
 133                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
 134
 135                         scale = o.matrix_world.to_scale()
 136                         ss.sub.append(Statement("scale", *tuple(scale)))
 137
 138                         st.sub.append(ss)
 139                         scene_res.statements.append(st)
 140
 141                 progress.set_progress(1.0)
 142
 143                 return scene_res