blender/io_mspgl/export_object.py

   1 import os
   2 import mathutils
   3
   4 def linear_to_srgb(l):
   5         if l<0.0031308:
   6                 return 12.92*l
   7         else:
   8                 return 1.055*(l**(1/2.4))-0.055
   9
  10 def get_colormap(srgb):
  11         if srgb:
  12                 return linear_to_srgb
  13         else:
  14                 return lambda x: x
  15
  16 def image_name(i):
  17         fp = i.filepath
  18         if fp:
  19                 return os.path.split(fp)[1]
  20         else:
  21                 return i.name
  22
  23 def external_name(out_file, ext, index):
  24         path, base = os.path.split(out_file.filename)
  25         base = os.path.splitext(base)[0]
  26         if index>0:
  27                 base += "_lod{}".format(index)
  28         return path, base+ext
  29
  30
  31 class ObjectExporter:
  32         def __init__(self):
  33                 self.textures = "REF"
  34                 self.separate_mesh = False
  35                 self.shared_mesh = True
  36                 self.separate_tech = False
  37                 self.external_tech = True
  38                 self.shared_tech = True
  39                 self.export_lods = True
  40
  41         def export(self, context, out_file, objs=None, progress=None):
  42                 if objs is None:
  43                         obj = context.active_object
  44                 else:
  45                         obj = objs[0]
  46
  47                 lods = [obj]
  48                 for c in obj.children:
  49                         if c.lod_for_parent:
  50                                 if c.lod_index>=len(lods):
  51                                         lods += [None]*(c.lod_index+1-len(lods))
  52                                 lods[c.lod_index] = c
  53
  54                 from .outfile import open_output
  55                 out_file = open_output(out_file)
  56
  57                 p1 = max(((v.co, v.co.length) for v in obj.data.vertices), key=lambda x:x[1])[0]
  58                 p2 = max(((v.co, (v.co-p1).length) for v in obj.data.vertices), key=lambda x:x[1])[0]
  59                 center = (p1+p2)/2
  60                 radius = (p1-p2).length/2
  61                 for v in obj.data.vertices:
  62                         d = v.co-center
  63                         if d.length>radius:
  64                                 center += d*(1-radius/d.length)/2
  65                                 radius = (radius+d.length)/2
  66
  67                 out_file.write("bounding_sphere_hint", center[0], center[1], center[2], radius)
  68
  69                 prev_mesh = None
  70                 prev_tech = (None, None)
  71                 for i, l in enumerate(lods):
  72                         if i>0:
  73                                 out_file.begin("level_of_detail", i)
  74                                 objs = [l]
  75
  76                         if i==0 or l.data.name!=prev_mesh:
  77                                 mesh = self.export_object_mesh(context, out_file, l, objs, progress)
  78                                 prev_mesh = l.data.name
  79
  80                         same_tech = True
  81                         mat = None
  82                         if l.material_slots and l.material_slots[0].material:
  83                                 mat = l.material_slots[0].material.name
  84                                 if mat!=prev_tech[1]:
  85                                         same_tech = False
  86                         if self.external_tech and l.technique!=prev_tech[0]:
  87                                 same_tech = False
  88                         if i==0 or not same_tech:
  89                                 self.export_object_technique(l, mesh, out_file, i)
  90                                 prev_tech = (l.technique, mat)
  91
  92                         if i>0:
  93                                 out_file.end()
  94
  95         def export_object_mesh(self, context, out_file, lod, objs, progress):
  96                 from .export_mesh import MeshExporter
  97                 mesh_export = MeshExporter()
  98                 for k, v in self.__dict__.items():
  99                         setattr(mesh_export, k, v)
 100
 101                 lod_index = 0
 102                 if lod.lod_for_parent:
 103                         lod_index = lod.lod_index
 104
 105                 if self.separate_mesh:
 106                         from .outfile import open_output
 107                         path, name = external_name(out_file, ".mesh", lod_index)
 108                         if self.shared_mesh:
 109                                 name = lod.data.name+".mesh"
 110                         mesh_out = open_output(os.path.join(path, name))
 111                         mesh = mesh_export.export(context, mesh_out, objs, progress)
 112                         out_file.write("mesh", '"{}"'.format(name))
 113                 else:
 114                         out_file.begin("mesh")
 115                         mesh = mesh_export.export(context, out_file, objs, progress)
 116                         out_file.end()
 117
 118                 return mesh
 119
 120         def export_object_technique(self, obj, mesh, out_file, lod_index):
 121                 material = None
 122                 if obj.material_slots:
 123                         material = obj.material_slots[0].material
 124
 125                 from .outfile import open_output
 126                 path, name = external_name(out_file, ".tech", lod_index)
 127
 128                 if self.external_tech and obj.technique:
 129                         if obj.inherit_tech and material and (obj.override_material or material.texture_slots):
 130                                 out_file.begin("technique")
 131                                 out_file.begin("inherit", '"{}"'.format(obj.technique))
 132                                 for slot in material.texture_slots:
 133                                         if slot and slot.texture.type=="IMAGE":
 134                                                 name = image_name(slot.texture.image)
 135                                                 if slot.use_map_color_diffuse:
 136                                                         out_file.write("texture", '"diffuse_map"', '"{}"'.format(name))
 137                                                 elif slot.use_map_normal:
 138                                                         out_file.write("texture", '"normal_map"', '"{}"'.format(name))
 139                                 if obj.override_material:
 140                                         mat_name = material.name+".mat"
 141                                         mat_out = open_output(os.path.join(path, mat_name))
 142                                         self.export_material(material, mat_out)
 143                                         out_file.write("material", '"surface"', '"{}"'.format(mat_name))
 144                                 out_file.end()
 145                                 out_file.end()
 146                         else:
 147                                 out_file.write("technique", '"{}"'.format(obj.technique))
 148                 elif self.separate_tech:
 149                         if self.shared_tech and material:
 150                                 name = material.name+".tech"
 151                         tech_out = open_output(os.path.join(path, name))
 152                         self.export_technique_definition(material, mesh, tech_out)
 153                         out_file.write("technique", '"{}"'.format(name))
 154                 else:
 155                         out_file.begin("technique")
 156                         self.export_technique_definition(material, obj.material_tex, mesh, out_file)
 157                         out_file.end()
 158
 159         def export_technique_definition(self, material, material_tex, mesh, out_file):
 160                 out_file.begin("pass", '""')
 161                 if material:
 162                         if material_tex:
 163                                 out_file.begin("material")
 164                                 out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
 165                                 out_file.end()
 166                                 index = 0
 167                                 for u in mesh.uv_layers:
 168                                         if u.name=="material_tex":
 169                                                 index = u.unit
 170                                 out_file.begin("texunit", index)
 171                                 out_file.begin("texture2d")
 172                                 out_file.write("min_filter", "NEAREST")
 173                                 out_file.write("mag_filter", "NEAREST")
 174                                 out_file.write("storage", "RGB", len(mesh.materials), 1)
 175                                 texdata = '"'
 176                                 for m in mesh.materials:
 177                                         cm = get_colormap(m.srgb_colors)
 178                                         color = [int(cm(c)*255) for c in m.diffuse_color*m.diffuse_intensity]
 179                                         texdata += "\\x%02X\\x%02X\\x%02X"%tuple(color)
 180                                 texdata += '"'
 181                                 out_file.write("raw_data", texdata)
 182                                 out_file.end()
 183                                 out_file.end()
 184                         else:
 185                                 out_file.begin("material")
 186                                 self.export_material(material, out_file)
 187                                 out_file.end()
 188
 189                         if self.textures!="NONE":
 190                                 for slot in material.texture_slots:
 191                                         if not slot:
 192                                                 continue
 193
 194                                         tex = slot.texture
 195                                         if tex.type!="IMAGE":
 196                                                 continue
 197
 198                                         if slot.uv_layer:
 199                                                 for u in mesh.uv_layers:
 200                                                         if u.name==slot.uv_layer:
 201                                                                 index = u.unit
 202                                         else:
 203                                                 index = mesh.uv_layers[0].unit
 204
 205                                         out_file.begin("texunit", index)
 206                                         if self.textures=="INLINE":
 207                                                 out_file.begin("texture2d")
 208                                                 out_file.write("min_filter", "LINEAR")
 209                                                 out_file.write("storage", "RGBA", tex.image.size[0], tex.image.size[1])
 210                                                 texdata = '"'
 211                                                 for p in tex.image.pixels:
 212                                                         texdata += "\\x%02X"%int(p*255)
 213                                                 texdata += '"'
 214                                                 out_file.write("raw_data", texdata)
 215                                                 out_file.end()
 216                                         else:
 217                                                 out_file.write("texture", '"%s"'%image_name(tex.image))
 218                                         out_file.end()
 219
 220                 out_file.end()
 221
 222         def export_material(self, mat, out_file):
 223                 cm = get_colormap(mat.srgb_colors)
 224                 if any((s and s.use_map_color_diffuse) for s in mat.texture_slots):
 225                         out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
 226                         amb = cm(mat.ambient)
 227                         out_file.write("ambient", amb, amb, amb, 1.0)
 228                 else:
 229                         diff = mat.diffuse_color*mat.diffuse_intensity
 230                         out_file.write("diffuse", cm(diff.r), cm(diff.g), cm(diff.b), 1.0)
 231                         amb = diff*mat.ambient
 232                         out_file.write("ambient", cm(amb.r), cm(amb.g), cm(amb.b), 1.0)
 233                 spec = mat.specular_color*mat.specular_intensity
 234                 out_file.write("specular", spec.r, spec.g, spec.b, 1.0)
 235                 out_file.write("shininess", mat.specular_hardness);