blender/io_mspgl/export_light.py

   1 import mathutils
   2
   3 class LightExporter:
   4         def export_light(self, obj):
   5                 if obj.type!='LIGHT':
   6                         raise ValueError("Object {} is not a light".format(obj.name))
   7                 light = obj.data
   8
   9                 from .datafile import Resource, Statement, Token
  10                 light_res = Resource(light.name+".light", "light")
  11
  12                 if light.type=='SUN':
  13                         light_res.statements.append(Statement("type", Token("directional")))
  14                         light_res.statements.append(Statement("direction", *(-obj.matrix_world.col[2])[0:3]))
  15                 elif light.type=='POINT':
  16                         light_res.statements.append(Statement("type", Token("point")))
  17                         pos = obj.matrix_world@mathutils.Vector((0.0, 0.0, 0.0, 1.0))
  18                         light_res.statements.append(Statement("position", *obj.matrix_world.col[3][0:3]))
  19                 else:
  20                         raise Exception("Can't export light {} of unknown type {}".format(light.name, light.type))
  21
  22                 c = light.color*light.energy
  23                 light_res.statements.append(Statement("color", *tuple(c)))
  24
  25                 return light_res