blender/io_mspgl/export_scene.py

   1 import math
   2 import os
   3
   4 class SceneExporter:
   5         def export_to_file(self, context, out_fn, *, selected_only=False, visible_only=True, collection=True, skip_existing=True):
   6                 from .util import Progress
   7                 progress = Progress(context)
   8
   9                 from .scene import create_scene_from_current
  10                 scene = create_scene_from_current(context, selected_only=selected_only, visible_only=visible_only)
  11
  12                 resources = {}
  13                 self.export_scene_resources(context, scene, resources, progress)
  14                 scene_res = self.export_scene(scene, resources)
  15                 progress.set_progress(1.0)
  16
  17                 path, base = os.path.split(out_fn)
  18                 base, ext = os.path.splitext(base)
  19
  20                 if collection:
  21                         existing = None
  22                         if skip_existing:
  23                                 existing = lambda r: not os.path.exists(os.path.join(path, r.name))
  24                         scene_res.write_collection(out_fn, filter=existing)
  25                 else:
  26                         scene_res.write_to_file(out_fn)
  27                         for r in scene_res.collect_references():
  28                                 r.write_to_file(os.path.join(path, r.name))
  29
  30         def export_scene_resources(self, context, scene, resources, progress):
  31                 from .export import DataExporter
  32                 data_exporter = DataExporter()
  33
  34                 data_exporter.export_resources(context, scene.prototypes, resources, None, progress)
  35
  36         def export_scene(self, scene, resources):
  37                 from .datafile import Resource, Statement, Token
  38                 scene_res = Resource(scene.name+".scene", "scene")
  39
  40                 if scene.background_set or (scene.instances and scene.blended_instances):
  41                         scene_res.statements.append(Statement("type", Token("ordered")))
  42                         if scene.background_set:
  43                                 scene_res.statements.append(scene_res.create_reference_statement("scene", resources[scene.background_set.name+".scene"]))
  44
  45                         if scene.instances:
  46                                 st = Statement("scene")
  47                                 st.sub.append(Statement("type", Token("simple")))
  48                                 self.add_instances(scene_res, st.sub, scene.instances, resources)
  49                                 scene_res.statements.append(st)
  50
  51                         if scene.blended_instances:
  52                                 st = Statement("scene")
  53                                 st.sub.append(Statement("type", Token("zsorted")))
  54                                 self.add_instances(scene_res, st.sub, scene.blended_instances, resources)
  55                                 scene_res.statements.append(st)
  56                 else:
  57                         scene_type = "zsorted" if scene.blended_instances else "simple"
  58                         scene_res.statements.append(Statement("type", Token(scene_type)))
  59
  60                         self.add_instances(scene_res, scene_res.statements, scene.instances, resources)
  61                         self.add_instances(scene_res, scene_res.statements, scene.blended_instances, resources)
  62
  63                 return scene_res
  64
  65         def add_instances(self, scene_res, statements, instances, resources):
  66                 from .datafile import Statement
  67
  68                 for i in instances:
  69                         obj_res = resources[i.prototype+".object"]
  70                         st = scene_res.create_reference_statement("object", obj_res, i.name)
  71
  72                         ss = Statement("transform")
  73
  74                         loc = i.matrix_world.to_translation()
  75                         ss.sub.append(Statement("position", *tuple(loc)))
  76
  77                         quat = i.matrix_world.to_quaternion()
  78                         if i.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
  79                                 angles = [a*180/math.pi for a in quat.to_euler()]
  80                                 ss.sub.append(Statement("euler", *angles));
  81                         else:
  82                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
  83
  84                         scale = i.matrix_world.to_scale()
  85                         ss.sub.append(Statement("scale", *tuple(scale)))
  86
  87                         st.sub.append(ss)
  88                         statements.append(st)
  89
  90         def export_sequence_resources(self, scene, resources):
  91                 from .datafile import Resource, Statement, Token
  92
  93                 lights = []
  94                 s = scene
  95                 while s:
  96                         lights += s.lights
  97                         s = s.background_set
  98
  99                 from .util import make_unique
 100                 lights = make_unique(lights)
 101
 102                 from .export_light import LightExporter
 103                 light_exporter = LightExporter()
 104                 for l in lights:
 105                         light_name = l.name+".light"
 106                         if light_name not in resources:
 107                                 resources[light_name] = light_exporter.export_light(l)
 108
 109                 lighting_name = scene.name+".lightn"
 110                 if lighting_name not in resources:
 111                         lighting_res = Resource(lighting_name, "lighting")
 112                         lighting_res.statements.append(Statement("ambient", *tuple(scene.ambient_light)))
 113                         for l in lights:
 114                                 lighting_res.statements.append(lighting_res.create_reference_statement("light", resources[l.name+".light"]))
 115
 116                         resources[lighting_name] = lighting_res
 117
 118         def export_sequence(self, scene, resources):
 119                 from .datafile import Resource, Statement, Token
 120                 seq_res = Resource(scene.name+".seq", "sequence")
 121
 122                 if scene.use_hdr:
 123                         seq_res.statements.append(Statement("hdr", True))
 124
 125                 ss = Statement("clear")
 126                 ss.sub.append(Statement("color", 0.0, 0.0, 0.0, 0.0))
 127                 ss.sub.append(Statement("depth", 1.0))
 128                 seq_res.statements.append(ss)
 129
 130                 scene_res = resources[scene.name+".scene"]
 131                 seq_res.statements.append(seq_res.create_reference_statement("renderable", "content", scene_res))
 132
 133                 lighting_res = resources[scene.name+".lightn"]
 134
 135                 any_opaque = False
 136                 any_blended = False
 137                 s = scene
 138                 while s:
 139                         if s.instances:
 140                                 any_opaque = True
 141                         if s.blended_instances:
 142                                 any_blended = True
 143                         s = s.background_set
 144
 145                 if any_opaque:
 146                         ss = Statement("step", "", "content")
 147                         ss.sub.append(Statement("depth_test", Token("LEQUAL")))
 148                         ss.sub.append(seq_res.create_reference_statement("lighting", lighting_res))
 149                         seq_res.statements.append(ss)
 150
 151                 if any_blended:
 152                         ss = Statement("step", "blended", "content")
 153                         ss.sub.append(Statement("depth_test", Token("LEQUAL")))
 154                         ss.sub.append(seq_res.create_reference_statement("lighting", lighting_res))
 155                         seq_res.statements.append(ss)
 156
 157                 if scene.use_ao:
 158                         ss = Statement("postprocessor")
 159                         ss.sub.append(Statement("type", Token("ambient_occlusion")))
 160                         ss.sub.append(Statement("occlusion_radius", scene.ao_distance))
 161                         ss.sub.append(Statement("samples", scene.ao_samples))
 162                         seq_res.statements.append(ss)
 163
 164                 if scene.use_hdr:
 165                         ss = Statement("postprocessor")
 166                         ss.sub.append(Statement("type", Token("bloom")))
 167                         seq_res.statements.append(ss)
 168
 169                         ss = Statement("postprocessor")
 170                         ss.sub.append(Statement("type", Token("colorcurve")))
 171                         ss.sub.append(Statement("exposure_adjust", scene.exposure))
 172                         ss.sub.append(Statement("srgb"))
 173                         seq_res.statements.append(ss)
 174                 else:
 175                         # Add a colorcurve with linear response to convert into sRGB color space
 176                         ss = Statement("postprocessor")
 177                         ss.sub.append(Statement("type", Token("colorcurve")))
 178                         ss.sub.append(Statement("brightness_response", 1.0))
 179                         ss.sub.append(Statement("srgb"))
 180                         seq_res.statements.append(ss)
 181
 182                 return seq_res