Yes, all new lights default to these values. Setting the color of a light to viz.RED will set the diffuse to [1,0,0] and leave the ambient/specular alone. If you want to change those values then you can use the <node>.ambient and <node>.specular commands.
Here are the defaults for the other values:
spotexponent: 0.0
spread: 180
constant attenuation: 1
linear attenuation: 0
quadratic attenuation: 0
intensity: 1
Translating a light has the same effect as setting the position.
|