blender/io_mspgl/export_object.py

   1 import os
   2
   3 def linear_to_srgb(l):
   4         if l<0.0031308:
   5                 return 12.92*l
   6         else:
   7                 return 1.055*(l**(1/2.4))-0.055
   8
   9
  10 class ObjectExporter:
  11         def __init__(self):
  12                 self.material_tex = False
  13                 self.srgb_colors = True
  14                 self.textures = "REF"
  15                 self.separate_mesh = False
  16                 self.separate_tech = False
  17                 self.external_tech = True
  18                 self.shared_tech = True
  19
  20         def export(self, context, out_file):
  21                 obj = context.active_object
  22
  23                 from .outfile import open_output
  24                 out_file = open_output(out_file)
  25
  26                 from .export_mesh import MeshExporter
  27                 mesh_export = MeshExporter()
  28                 for k, v in self.__dict__.items():
  29                         setattr(mesh_export, k, v)
  30
  31                 if self.separate_mesh:
  32                         path, base = os.path.split(out_file.filename)
  33                         base, ext = os.path.splitext(base)
  34                         mesh_out = open_output(os.path.join(path, base+".mesh"))
  35                         mesh = mesh_export.export(context, mesh_out)
  36                         out_file.write("mesh", "\""+base+".mesh\"")
  37                 else:
  38                         out_file.begin("mesh")
  39                         mesh = mesh_export.export(context, out_file)
  40                         out_file.end()
  41
  42                 if self.external_tech and obj.technique:
  43                         out_file.write("technique", '"{}"'.format(obj.technique))
  44                 elif self.separate_tech:
  45                         path, base = os.path.split(out_file.filename)
  46                         if self.shared_tech and mesh.materials:
  47                                 tech_name = mesh.materials[0].name+".tech"
  48                         else:
  49                                 base, ext = os.path.splitext(base)
  50                                 tech_name = base+".tech"
  51                         tech_out = open_output(os.path.join(path, tech_name))
  52                         self.export_technique(mesh, tech_out)
  53                         out_file.write("technique", '"{}"'.format(tech_name))
  54                 else:
  55                         out_file.begin("technique")
  56                         self.export_technique(mesh, out_file)
  57                         out_file.end()
  58
  59         def export_technique(self, mesh, out_file):
  60                 out_file.begin("pass", '""')
  61                 if mesh.materials:
  62                         if self.srgb_colors:
  63                                 cm = linear_to_srgb
  64                         else:
  65                                 cm = lambda x: x
  66
  67                         if self.material_tex:
  68                                 out_file.begin("material")
  69                                 out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
  70                                 out_file.end()
  71                                 index = 0
  72                                 for u in mesh.uv_layers:
  73                                         if u.name=="material_tex":
  74                                                 index = u.unit
  75                                 out_file.begin("texunit", index)
  76                                 out_file.begin("texture2d")
  77                                 out_file.write("min_filter", "NEAREST")
  78                                 out_file.write("mag_filter", "NEAREST")
  79                                 out_file.write("storage", "RGB", len(mesh.materials), 1)
  80                                 texdata = '"'
  81                                 for m in mesh.materials:
  82                                         color = [int(cm(c)*255) for c in m.diffuse_color]
  83                                         texdata += "\\x%02X\\x%02X\\x%02X"%tuple(color)
  84                                 texdata += '"'
  85                                 out_file.write("raw_data", texdata)
  86                                 out_file.end()
  87                                 out_file.end()
  88                         else:
  89                                 mat = mesh.materials[0]
  90                                 out_file.begin("material")
  91                                 if any((s and s.use_map_color_diffuse) for s in mat.texture_slots):
  92                                         out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
  93                                         amb = cm(mat.ambient)
  94                                         out_file.write("ambient", amb, amb, amb, 1.0)
  95                                 else:
  96                                         diff = mat.diffuse_color
  97                                         out_file.write("diffuse", cm(diff.r), cm(diff.g), cm(diff.b), 1.0)
  98                                         amb = diff*mat.ambient
  99                                         out_file.write("ambient", cm(amb.r), cm(amb.g), cm(amb.b), 1.0)
 100                                 spec = mat.specular_color*mat.specular_intensity
 101                                 out_file.write("specular", spec.r, spec.g, spec.b, 1.0)
 102                                 out_file.write("shininess", mat.specular_hardness);
 103                                 out_file.end()
 104
 105                         if self.textures!="NONE":
 106                                 for slot in mesh.materials[0].texture_slots:
 107                                         if not slot:
 108                                                 continue
 109
 110                                         tex = slot.texture
 111                                         if tex.type!="IMAGE":
 112                                                 continue
 113
 114                                         if slot.uv_layer:
 115                                                 for u in mesh.uv_layers:
 116                                                         if u.name==slot.uv_layer:
 117                                                                 index = u.unit
 118                                         else:
 119                                                 index = mesh.uv_layers[0].unit
 120
 121                                         out_file.begin("texunit", index)
 122                                         if self.textures=="INLINE":
 123                                                 out_file.begin("texture2d")
 124                                                 out_file.write("min_filter", "LINEAR")
 125                                                 out_file.write("storage", "RGBA", tex.image.size[0], tex.image.size[1])
 126                                                 texdata = '"'
 127                                                 for p in tex.image.pixels:
 128                                                         texdata += "\\x%02X"%int(p*255)
 129                                                 texdata += '"'
 130                                                 out_file.write("raw_data", texdata)
 131                                                 out_file.end()
 132                                         else:
 133                                                 out_file.write("texture", '"%s"'%tex.image.name)
 134                                         out_file.end()
 135
 136                 out_file.end()