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