How to move the light position in runtime?
I did the following:
glLightfv(GL_LIGHT0, GL_POSITION,AmbientLightPosition);
with the new value,but wheren’t any effect.
How to update only the changes connected to lighting ?
How to move the light position in runtime?
I did the following:
glLightfv(GL_LIGHT0, GL_POSITION,AmbientLightPosition);
with the new value,but wheren’t any effect.
How to update only the changes connected to lighting ?
Light position is manipulated by the current modelview matrix. The position stays fixed if you update light positions outside a modelview matrix hierarchy, it will move with objects of you do it inside.
“Ambient” light has no direction and position.
If you set the w coordinate of the light position to 0.0 you get a directional light, if you set it to 1.0 you get a positional light (pointlight, spotlight).
And you have to redraw your whole scene, of course.
Thanks a lot.It works now.
I’m confused - in many examples I saw defining of “AmbientLightPosition”.Seems that meaning of this is general light source position.