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.active_layers = 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.active_layers:
  18                         layers = context.scene.layers
  19                         objs = [o for o in objs if any(a and b for a, b in zip(layers, o.layers))]
  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
  23                 path, base = os.path.split(out_fn)
  24                 base, ext = os.path.splitext(base)
  25
  26                 from .export_object import ObjectExporter
  27                 object_export = ObjectExporter()
  28
  29                 object_prototypes = {}
  30                 unique_objects = []
  31                 export_names = {}
  32                 for o in objs:
  33                         if o.name in object_prototypes:
  34                                 continue
  35
  36                         clones = [o]
  37                         if not any(s.link=="OBJECT" for s in o.material_slots):
  38                                 for u in objs:
  39                                         if u is o:
  40                                                 continue
  41                                         if u.data.name!=o.data.name:
  42                                                 continue
  43                                         if any(s.link=="OBJECT" for s in u.material_slots):
  44                                                 continue
  45
  46                                         clones.append(u)
  47
  48                         prefix = o.name
  49                         for c in clones:
  50                                 while not c.name.startswith(prefix):
  51                                         pos = max(prefix.rfind(' '), prefix.rfind('.'))
  52                                         if pos<0:
  53                                                 break;
  54                                         prefix = prefix[:pos]
  55
  56                         if prefix:
  57                                 export_names[o.name+".object"] = prefix.strip(" .")+".object"
  58
  59                         unique_objects.append(o)
  60                         for c in clones:
  61                                 object_prototypes[c.name] = o
  62
  63                 from .util import Progress
  64                 progress = Progress(self.show_progress and context)
  65
  66                 resources = {}
  67                 self.export_scene_resources(context, unique_objects, resources, progress)
  68                 for n, r in resources.items():
  69                         if r.name in export_names:
  70                                 r.name = export_names[r.name]
  71
  72                 scene_res = self.export_scene(context, objs, progress, prototypes=object_prototypes, resources=resources)
  73                 refs = scene_res.collect_references()
  74
  75                 if self.resource_collection:
  76                         from .datafile import Statement
  77                         keywords = { ".mat": "material",
  78                                 ".mesh": "mesh",
  79                                 ".object": "object",
  80                                 ".tech": "technique",
  81                                 ".tex2d": "texture2d" }
  82                         with open(os.path.join(path, base+"_resources.mdc"), "w") as res_out:
  83                                 for r in refs:
  84                                         if self.skip_existing and os.path.exists(os.path.join(path, r.name)):
  85                                                 continue
  86
  87                                         st = Statement(keywords[os.path.splitext(r.name)[1]], r.name)
  88                                         st.sub = r.statements
  89                                         st.write_to_file(res_out)
  90                 else:
  91                         res_dir = os.path.join(path, base+"_resources")
  92                         if not os.path.exists(res_dir):
  93                                 os.makedirs(res_dir)
  94                         for r in refs:
  95                                 with open(os.path.join(res_dir, r.name), "w") as res_out:
  96                                         for s in r.statements:
  97                                                 s.write_to_file(res_out)
  98
  99                 with open(out_fn, "w") as out_file:
 100                         for s in scene_res.statements:
 101                                 s.write_to_file(out_file)
 102
 103         def export_scene_resources(self, context, objs, resources, progress):
 104                 from .export_object import ObjectExporter
 105                 object_export = ObjectExporter()
 106                 object_export.single_file = False
 107
 108                 material_maps = {}
 109
 110                 for i, o in enumerate(objs):
 111                         progress.push_task_slice(o.name, i, len(objs))
 112                         object_export.export_object_resources(context, o, resources, progress, material_maps=material_maps)
 113                         obj_name = o.name+".object"
 114                         resources[obj_name] = object_export.export_object(context, o, progress, resources=resources)
 115                         progress.pop_task()
 116
 117         def export_scene(self, context, objs, progress, *, prototypes, resources):
 118                 from .datafile import Resource, Statement
 119                 scene_res = Resource("scene.scene")
 120
 121                 for o in objs:
 122                         obj_res = resources[prototypes[o.name].name+".object"]
 123                         st = scene_res.create_reference_statement("object", obj_res, o.name)
 124
 125                         ss = Statement("transform")
 126
 127                         loc = o.matrix_world.to_translation()
 128                         ss.sub.append(Statement("position", *tuple(loc)))
 129
 130                         quat = o.matrix_world.to_quaternion()
 131                         if o.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
 132                                 angles = [a*180/math.pi for a in quat.to_euler()]
 133                                 ss.sub.append(Statement("euler", *angles));
 134                         else:
 135                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
 136
 137                         scale = o.matrix_world.to_scale()
 138                         ss.sub.append(Statement("scale", *tuple(scale)))
 139
 140                         st.sub.append(ss)
 141                         scene_res.statements.append(st)
 142
 143                 progress.set_progress(1.0)
 144
 145                 return scene_res