Spot light does not use <direction> tag.

[nkoenig]

According to SDF, a spot light should use the <direction> tag.

Gazebo doesn't seem to follow this guidance. See here.

Not sure if SDF is wrong, or Gazebo.

[chapulina]

I always thought that the direction tag added extra unnecessary complexity. Lights already have a pose, which should be enough to define where they're looking at.

[nkoenig]

Yeah, I think that's right. Maybe the SDF description just needs updating. @iche033 , what do you think?

[iche033]

I remember in gazebo-classic the pose tag applies additional rotation to the direction vector. We can keep the behavior consistent

[chapulina]

Done in #718