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