hi,
Which kind of shading model (Phong. Lambert, ...etc) is used by OpenSG.
Best Regards
Brajesh Lal
----- Original Message ----
From: Carsten Neumann <[EMAIL PROTECTED]>
To: [email protected]
Sent: Monday, June 18, 2007 1:08:03 PM
Subject: Re: [Opensg-users] Lighting a geometry by muliple lights
Hello Brajesh,
Brajesh Lal wrote:
> I did the second way as you mentioned, i think for direction light beacon
> does not matter if we don't want to move the directional light. If i don't
> add directional light transform nodes in the root node but still i can see
> the geometry, How is it possible?.
> Does directional light has special implementation technique?
if no beacon is set the light is positioned in the coordinate system
that is active at the lights position in the scenegraph.
> Even i changed the direction vector of the lights to 1,0,1 instead of 0,1,1.
> The illumination effect does not change.
> Reducing the number of light to one. Then also illumination effect does not
> change? why it is so?
If you have multiple directional lights with the same direction I would
expect the differences to be minimal and hard to notice. Give your
lights different directions and you should be able to spot a difference
more easily.
What are you trying to achieve with the multiple directional lights ?
Cheers,
Carsten
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