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  #1  
Old 08-19-2008, 04:50 PM
michaelrepucci michaelrepucci is offline
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headlight defaults

Hi, does anyone know the defaults for the headlight? I can't seem to find that in the documentation or anywhere online. Thanks!
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  #2  
Old 08-21-2008, 10:42 AM
farshizzo farshizzo is offline
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By default the head light is directional, pointing in the +Z direction, with the following color values:

diffuse: [0.8,0.8,0.8]
ambient: [0.05,0.05,0.05]
specular: [1,1,1]
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  #3  
Old 08-21-2008, 11:02 AM
michaelrepucci michaelrepucci is offline
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Oh, I didn't realize that lights could have diffuse, ambient, and specular components. Some follow-up questions. Do all new lights also have those same defaults? And if you set the color to say, viz.RED, then do you get diffuse=[0.8,0,0], ambient=[0.5,0,0], and specular=[1,0,0]? What about the default headlight values for the three types of attenuation, spread, and intensity? And is setting a light's position, say light.position(0,1,0), the same as translating it with light.translate(0,1,0)?
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Old 08-22-2008, 10:44 AM
farshizzo farshizzo is offline
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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.
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