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_only = True
   8                 self.collection = True
   9                 self.skip_existing = True
  10                 self.show_progress = True
  11
  12         def export_to_file(self, context, out_fn):
  13                 from .scene import create_scene_from_current
  14                 scene = create_scene_from_current(context, selected_only=self.selected_only, visible_only=self.visible_only)
  15
  16                 path, base = os.path.split(out_fn)
  17                 base, ext = os.path.splitext(base)
  18
  19                 export_names = {}
  20                 used_names = set()
  21                 for p in scene.prototypes:
  22                         clones = [i for i in scene.instances if i.prototype==p.name]
  23
  24                         prefix = p.name
  25                         for c in clones:
  26                                 while not c.name.startswith(prefix):
  27                                         pos = max(prefix.rfind(' '), prefix.rfind('.'))
  28                                         if pos<0:
  29                                                 break;
  30                                         prefix = prefix[:pos]
  31
  32                         if prefix:
  33                                 export_names[p.name+".object"] = prefix.strip(" .")
  34                         else:
  35                                 used_names.add(p.name)
  36
  37                 for n, e in export_names.items():
  38                         if e in used_names:
  39                                 number = 1
  40                                 while "{}_{}".format(e, number) in used_names:
  41                                         number += 1
  42                                 e += "_{}".format(number)
  43                         export_names[n] = e+".object"
  44                         used_names.add(e)
  45
  46                 from .util import Progress
  47                 progress = Progress(self.show_progress and context)
  48
  49                 from .export import DataExporter
  50                 data_exporter = DataExporter()
  51
  52                 resources = {}
  53                 data_exporter.export_resources(context, scene.prototypes, resources, None, progress)
  54                 for n, r in resources.items():
  55                         if r.name in export_names:
  56                                 r.name = export_names[r.name]
  57
  58                 scene_res = self.export_scene(scene, resources, progress)
  59                 refs = scene_res.collect_references()
  60
  61                 if self.collection:
  62                         existing = None
  63                         if self.skip_existing:
  64                                 existing = lambda r: not os.path.exists(os.path.join(path, r.name))
  65                         scene_res.write_collection(out_fn, filter=existing)
  66                 else:
  67                         scene_res.write_to_file(out_fn)
  68                         for r in refs:
  69                                 r.write_to_file(os.path.join(path, r.name))
  70
  71         def export_scene(self, scene, resources, progress):
  72                 from .datafile import Resource, Statement, Token
  73                 scene_res = Resource(scene.name+".scene", "scene")
  74
  75                 scene_res.statements.append(Statement("type", Token(scene.scene_type.lower())))
  76
  77                 for i in scene.instances:
  78                         obj_res = resources[i.prototype+".object"]
  79                         st = scene_res.create_reference_statement("object", obj_res, i.name)
  80
  81                         ss = Statement("transform")
  82
  83                         loc = i.matrix_world.to_translation()
  84                         ss.sub.append(Statement("position", *tuple(loc)))
  85
  86                         quat = i.matrix_world.to_quaternion()
  87                         if i.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
  88                                 angles = [a*180/math.pi for a in quat.to_euler()]
  89                                 ss.sub.append(Statement("euler", *angles));
  90                         else:
  91                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
  92
  93                         scale = i.matrix_world.to_scale()
  94                         ss.sub.append(Statement("scale", *tuple(scale)))
  95
  96                         st.sub.append(ss)
  97                         scene_res.statements.append(st)
  98
  99                 progress.set_progress(1.0)
 100
 101                 return scene_res