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
  11         def export_to_file(self, context, out_fn):
  12                 from .util import Progress
  13                 progress = Progress(context)
  14
  15                 from .scene import create_scene_from_current
  16                 scene = create_scene_from_current(context, selected_only=self.selected_only, visible_only=self.visible_only)
  17
  18                 resources = {}
  19                 self.export_scene_resources(context, scene, resources, progress)
  20                 scene_res = self.export_scene(scene, resources)
  21                 progress.set_progress(1.0)
  22
  23                 path, base = os.path.split(out_fn)
  24                 base, ext = os.path.splitext(base)
  25
  26                 if self.collection:
  27                         existing = None
  28                         if self.skip_existing:
  29                                 existing = lambda r: not os.path.exists(os.path.join(path, r.name))
  30                         scene_res.write_collection(out_fn, filter=existing)
  31                 else:
  32                         scene_res.write_to_file(out_fn)
  33                         for r in scene_res.collect_references():
  34                                 r.write_to_file(os.path.join(path, r.name))
  35
  36         def export_scene_resources(self, context, scene, resources, progress):
  37                 from .export import DataExporter
  38                 data_exporter = DataExporter()
  39
  40                 data_exporter.export_resources(context, scene.prototypes, resources, None, progress)
  41
  42         def export_scene(self, scene, resources):
  43                 from .datafile import Resource, Statement, Token
  44                 scene_res = Resource(scene.name+".scene", "scene")
  45
  46                 scene_res.statements.append(Statement("type", Token(scene.scene_type.lower())))
  47
  48                 for i in scene.instances:
  49                         obj_res = resources[i.prototype+".object"]
  50                         st = scene_res.create_reference_statement("object", obj_res, i.name)
  51
  52                         ss = Statement("transform")
  53
  54                         loc = i.matrix_world.to_translation()
  55                         ss.sub.append(Statement("position", *tuple(loc)))
  56
  57                         quat = i.matrix_world.to_quaternion()
  58                         if i.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
  59                                 angles = [a*180/math.pi for a in quat.to_euler()]
  60                                 ss.sub.append(Statement("euler", *angles));
  61                         else:
  62                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
  63
  64                         scale = i.matrix_world.to_scale()
  65                         ss.sub.append(Statement("scale", *tuple(scale)))
  66
  67                         st.sub.append(ss)
  68                         scene_res.statements.append(st)
  69
  70                 return scene_res