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core/lamp.py

@@ -0,0 +1,66 @@
+# -*- coding: utf-8 -*-
+# Copyright 2014 MMD Tools authors
+# This file is part of MMD Tools.
+
+import bpy
+
+from ..bpyutils import FnContext, Props
+
+
+class MMDLamp:
+    def __init__(self, obj):
+        if MMDLamp.isLamp(obj):
+            obj = obj.parent
+        if obj and obj.type == "EMPTY" and obj.mmd_type == "LIGHT":
+            self.__emptyObj = obj
+        else:
+            raise ValueError("%s is not MMDLamp" % str(obj))
+
+    @staticmethod
+    def isLamp(obj):
+        return obj and obj.type in {"LIGHT", "LAMP"}
+
+    @staticmethod
+    def isMMDLamp(obj):
+        if MMDLamp.isLamp(obj):
+            obj = obj.parent
+        return obj and obj.type == "EMPTY" and obj.mmd_type == "LIGHT"
+
+    @staticmethod
+    def convertToMMDLamp(lampObj, scale=1.0):
+        if MMDLamp.isMMDLamp(lampObj):
+            return MMDLamp(lampObj)
+
+        empty = bpy.data.objects.new(name="MMD_Light", object_data=None)
+        FnContext.link_object(FnContext.ensure_context(), empty)
+
+        empty.rotation_mode = "XYZ"
+        empty.lock_rotation = (True, True, True)
+        setattr(empty, Props.empty_display_size, 0.4)
+        empty.scale = [10 * scale] * 3
+        empty.mmd_type = "LIGHT"
+        empty.location = (0, 0, 11 * scale)
+
+        lampObj.parent = empty
+        lampObj.data.color = (0.602, 0.602, 0.602)
+        lampObj.location = (0.5, -0.5, 1.0)
+        lampObj.rotation_mode = "XYZ"
+        lampObj.rotation_euler = (0, 0, 0)
+        lampObj.lock_rotation = (True, True, True)
+
+        constraint = lampObj.constraints.new(type="TRACK_TO")
+        constraint.name = "mmd_lamp_track"
+        constraint.target = empty
+        constraint.track_axis = "TRACK_NEGATIVE_Z"
+        constraint.up_axis = "UP_Y"
+
+        return MMDLamp(empty)
+
+    def object(self):
+        return self.__emptyObj
+
+    def lamp(self):
+        for i in self.__emptyObj.children:
+            if MMDLamp.isLamp(i):
+                return i
+        raise KeyError