feat(light): Sets light radius per default to 0.25 to be backwards co…

…mpatible

blenderproc/python/types/LightUtility.py

@@ -32,6 +32,7 @@ def __init__(self, light_type: str = "POINT", name: str = "light", blender_obj:
             light_obj = bpy.data.objects.new(name=name, object_data=light_data)
             bpy.context.collection.objects.link(light_obj)
             super().__init__(light_obj)
+            self.set_radius(0.25)
         else:
             super().__init__(blender_obj)
 
@@ -46,6 +47,16 @@ def set_energy(self, energy: float, frame: Optional[int] = None):
         self.blender_obj.data.energy = energy
         Utility.insert_keyframe(self.blender_obj.data, "energy", frame)
 
+    def set_radius(self, radius: float, frame: Optional[int] = None):
+        """ Sets the radius / shadow_soft_size of the light.
+
+        :param radius: Light size for ray shadow sampling (Raytraced shadows).
+        :param frame: The frame number which the value should be set to. If None is given, the current
+                      frame number is used.
+        """
+        self.blender_obj.data.shadow_soft_size = radius
+        Utility.insert_keyframe(self.blender_obj.data, "shadow_soft_size", frame)
+
     def set_color(self, color: Union[list, Color], frame: Optional[int] = None):
         """ Sets the color of the light.
 
@@ -191,6 +202,16 @@ def get_energy(self, frame: Optional[int] = None) -> float:
         with KeyFrame(frame):
             return self.blender_obj.data.energy
 
+    def get_radius(self, frame: Optional[int] = None) -> float:
+        """ Returns the radius / shadow_soft_size of the light.
+
+        :param frame: The frame number which the value should be set to. If None is given, the current
+                      frame number is used.
+        :return: The radius at the specified frame.
+        """
+        with KeyFrame(frame):
+            return self.blender_obj.data.shadow_soft_size
+
     def get_color(self, frame: Optional[int] = None) -> Color:
         """ Returns the RGB color of the light.