blender/io_mspgl/export_scene.py

   1 import math
   2 import os
   3
   4 class SceneExporter:
   5         def __init__(self):
   6                 self.resource_collection = True
   7                 self.show_progress = True
   8
   9         def export_to_file(self, context, out_fn):
  10                 objs = [o for o in context.selected_objects if o.type=="MESH" and not o.lod_for_parent]
  11                 objs = [o for o in objs if (not o.compound or o.parent not in objs)]
  12
  13                 path, base = os.path.split(out_fn)
  14                 base, ext = os.path.splitext(base)
  15
  16                 from .export_object import ObjectExporter
  17                 object_export = ObjectExporter()
  18
  19                 object_prototypes = {}
  20                 unique_objects = []
  21                 for o in objs:
  22                         if o.name in object_prototypes:
  23                                 continue
  24
  25                         clones = [o]
  26                         if not any(s.link=="OBJECT" for s in o.material_slots):
  27                                 for u in objs:
  28                                         if u is o:
  29                                                 continue
  30                                         if u.data.name!=o.data.name:
  31                                                 continue
  32                                         if u.technique!=o.technique:
  33                                                 continue
  34                                         if any(s.link=="OBJECT" for s in u.material_slots):
  35                                                 continue
  36
  37                                         clones.append(u)
  38
  39                         unique_objects.append(o)
  40                         for c in clones:
  41                                 object_prototypes[c.name] = o
  42
  43                 from .util import Progress
  44                 progress = Progress(self.show_progress and context)
  45
  46                 resources = {}
  47                 self.export_scene_resources(context, unique_objects, resources, progress)
  48
  49                 scene_res = self.export_scene(context, objs, progress, prototypes=object_prototypes, resources=resources)
  50                 refs = scene_res.collect_references()
  51
  52                 from .datafile import Statement
  53                 if self.resource_collection:
  54                         keywords = { ".mat": "material",
  55                                 ".mesh": "mesh",
  56                                 ".object": "object",
  57                                 ".tech": "technique" }
  58                         with open(os.path.join(path, base+"_resources.mdc"), "w") as res_out:
  59                                 for r in refs:
  60                                         st = Statement(keywords[os.path.splitext(r.name)[1]], r.name)
  61                                         st.sub = r.statements
  62                                         st.write_to_file(res_out)
  63                 else:
  64                         res_dir = os.path.join(path, base+"_resources")
  65                         if not os.path.exists(res_dir):
  66                                 os.makedirs(res_dir)
  67                         for r in refs:
  68                                 with open(os.path.join(res_dir, r.name), "w") as res_out:
  69                                         for s in r.statements:
  70                                                 s.write_to_file(res_out)
  71
  72                 with open(out_fn, "w") as out_file:
  73                         for s in scene_res.statements:
  74                                 s.write_to_file(out_file)
  75
  76         def export_scene_resources(self, context, objs, resources, progress):
  77                 from .export_object import ObjectExporter
  78                 object_export = ObjectExporter()
  79                 object_export.single_file = False
  80
  81                 for i, o in enumerate(objs):
  82                         progress.push_task_slice(o.name, i, len(objs))
  83                         object_export.export_object_resources(context, o, resources, progress)
  84                         obj_name = o.name+".object"
  85                         resources[obj_name] = object_export.export_object(context, o, progress, resources=resources)
  86                         progress.pop_task()
  87
  88         def export_scene(self, context, objs, progress, *, prototypes, resources):
  89                 from .datafile import Resource, Statement
  90                 scene_res = Resource("scene.scene")
  91
  92                 for o in objs:
  93                         obj_res = resources[prototypes[o.name].name+".object"]
  94                         st = scene_res.create_reference_statement("object", obj_res)
  95                         # XXX Parent relationships screw up the location and rotation
  96                         st.sub.append(Statement("position", o.location[0], o.location[1], o.location[2]))
  97                         if o.rotation_mode=="AXIS_ANGLE":
  98                                 angle = o.rotation_axis_angle[0]
  99                                 axis = o.rotation_axis_angle[1:]
 100                         else:
 101                                 if o.rotation_mode=="QUATERNION":
 102                                         q = o.rotation_quaternion
 103                                 else:
 104                                         q = o.rotation_euler.to_quaternion()
 105                                 angle = q.angle
 106                                 axis = q.axis
 107                         st.sub.append(Statement("rotation", angle*180/math.pi, axis[0], axis[1], axis[2]))
 108                         st.sub.append(Statement("scale", o.scale[0], o.scale[1], o.scale[2]))
 109                         scene_res.statements.append(st)
 110
 111                 progress.set_progress(1.0)
 112
 113                 return scene_res