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                 scene_res.statements.append(Statement("type", Token(scene.scene_type.lower())))
  41
  42                 for i in scene.instances:
  43                         obj_res = resources[i.prototype+".object"]
  44                         st = scene_res.create_reference_statement("object", obj_res, i.name)
  45
  46                         ss = Statement("transform")
  47
  48                         loc = i.matrix_world.to_translation()
  49                         ss.sub.append(Statement("position", *tuple(loc)))
  50
  51                         quat = i.matrix_world.to_quaternion()
  52                         if i.rotation_mode in ('XYZ', 'XZY', 'YXZ', 'YZX', 'ZXY', 'ZYX'):
  53                                 angles = [a*180/math.pi for a in quat.to_euler()]
  54                                 ss.sub.append(Statement("euler", *angles));
  55                         else:
  56                                 ss.sub.append(Statement("rotation", quat.angle*180/math.pi, *tuple(quat.axis)))
  57
  58                         scale = i.matrix_world.to_scale()
  59                         ss.sub.append(Statement("scale", *tuple(scale)))
  60
  61                         st.sub.append(ss)
  62                         scene_res.statements.append(st)
  63
  64                 return scene_res
  65
  66         def export_sequence_resources(self, scene, resources):
  67                 from .datafile import Resource, Statement, Token
  68
  69                 if scene.background_set:
  70                         wrapper_name = scene.name+".wrapper.scene"
  71                         if wrapper_name not in resources:
  72                                 wrapper_res = Resource(wrapper_name, "scene")
  73                                 wrapper_res.statements.append(Statement("type", Token("ordered")))
  74                                 for s in scene.get_chain():
  75                                         wrapper_res.statements.append(wrapper_res.create_reference_statement("scene", resources[s.name+".scene"]))
  76
  77                                 resources[wrapper_name] = wrapper_res
  78
  79                 lights = []
  80                 s = scene
  81                 while s:
  82                         lights += s.lights
  83                         s = s.background_set
  84
  85                 from .util import make_unique
  86                 lights = make_unique(lights)
  87
  88                 from .export_light import LightExporter
  89                 light_exporter = LightExporter()
  90                 for l in lights:
  91                         light_name = l.name+".light"
  92                         if light_name not in resources:
  93                                 resources[light_name] = light_exporter.export_light(l)
  94
  95                 lighting_name = scene.name+".lightn"
  96                 if lighting_name not in resources:
  97                         lighting_res = Resource(lighting_name, "lighting")
  98                         lighting_res.statements.append(Statement("ambient", *tuple(scene.ambient_light)))
  99                         for l in lights:
 100                                 lighting_res.statements.append(lighting_res.create_reference_statement("light", resources[l.name+".light"]))
 101
 102                         resources[lighting_name] = lighting_res
 103
 104         def export_sequence(self, scene, resources):
 105                 from .datafile import Resource, Statement, Token
 106                 seq_res = Resource(scene.name+".seq", "sequence")
 107
 108                 if scene.use_hdr:
 109                         seq_res.statements.append(Statement("hdr", True))
 110
 111                 content = scene
 112                 if scene.background_set:
 113                         content = resources[scene.name+".wrapper.scene"]
 114
 115                 ss = Statement("clear")
 116                 ss.sub.append(Statement("color", 0.0, 0.0, 0.0, 0.0))
 117                 ss.sub.append(Statement("depth", 1.0))
 118                 seq_res.statements.append(ss)
 119
 120                 ss = Statement("step", "", "content")
 121                 ss.sub.append(Statement("depth_test", Token("LEQUAL")))
 122                 ss.sub.append(seq_res.create_reference_statement("lighting", resources[scene.name+".lightn"]))
 123                 ss.sub.append(seq_res.create_reference_statement("scene", content))
 124                 seq_res.statements.append(ss)
 125
 126                 if scene.use_ao:
 127                         ss = Statement("ambient_occlusion")
 128                         ss.sub.append(Statement("occlusion_radius", scene.ao_distance))
 129                         ss.sub.append(Statement("samples", scene.ao_samples))
 130                         seq_res.statements.append(ss)
 131
 132                 if scene.use_hdr:
 133                         seq_res.statements.append(Statement("bloom"))
 134                         ss = Statement("colorcurve")
 135                         ss.sub.append(Statement("exposure_adjust", scene.exposure))
 136                         ss.sub.append(Statement("srgb"))
 137                         seq_res.statements.append(ss)
 138                 else:
 139                         # Add a colorcurve with linear response to convert into sRGB color space
 140                         ss = Statement("colorcurve")
 141                         ss.sub.append(Statement("brightness_response", 1.0))
 142                         ss.sub.append(Statement("srgb"))
 143                         seq_res.statements.append(ss)
 144
 145                 return seq_res