B�n�dicte DESCLEFS wrote:
> do you know where I can find information about the different types of
> colours in a Material node ?
Don't know. I know that these are very standard terms in the 3D graphics
community. Here's a quick and dirty summary based on my general usage of
them:
> (I would like to find definitions for : ambiant colour, emissive colour,
> diffuse colour and specular colour).
Ambient: The colour of the object when ambient light is available. Sort
of like a "background" colour of the object. If there is only an
AmbientLight source and no directional lights like a SpotLight then the
object is this colour. Ambient light might be something like moonlight
at night that doesn't cause shadows or similar effects but gives enough
light to actually distinguish objects.
Emissive: The colour that the object emits. Light a light globe, this is
the colour most objects appear to be and give it a "brightness".
Emissive colour is not the same as a Light object in that the colour
emitted does not influence the other objects in the scene (ie enter
thier lighting equations). If there are no lights in the virtual world,
the object will appear to be this colour only.
Diffuse: The colour of the object as a result of other light sources
shining on it. Usually used for transparency calculations etc as well -
for example green tinge of bullet-proof glass would use this to obtain
the tinted effect.
Specular: The "hightlight" colour of the object. Think of the little
white spot on a Pool Ball where the light reflects off it - that is the
specular colour that is used in reflections and highlighting. Not seen
if the world only contains ambient light.
--
Justin Couch Author, Java Hacker
Snr Software Engineer [EMAIL PROTECTED]
ADI Ltd, Systems Group http://www.vlc.com.au/~justin/
Java3D FAQ: http://tintoy.ncsa.uiuc.edu/~srp/java3d/faq.html
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