sinisterchipmunk
commented
13 years ago Thanks for the compliment! :) Wait till the next iteration comes around... IMHO support for plugins will make it just that much more powerful, because it'll let developers effectively collaborate on shaders, meshes and so forth.
In WebGL and Jax, the X axis goes from the left (negative) to right (positive); Y goes from the bottom (negative) to top (positive); and Z goes from near (positive) to far (negative). Light vectors are given in world coordinates, so the camera orientation should not have an effect in this case.
The screenshot in the guide is accurate for a directional light shining in the direction [-1, -1, 1] -- or [left, down, forward].
If it's not behaving as advertised for you, then that's the real issue! I'll double check and make sure the Y axis isn't being flipped or anything weird like that, but I haven't noticed such anomalies on my end so it may be more complicated than that. Can you list steps to reproduce the issue, or perhaps even provide a git repo I can clone?
rubychan
In http://guides.jaxgl.com/getting_started.html#directional-lights, the picture shows the output for the "sun" light source at [-1, 1, 1], but the code says [-1, -1, 1]. The spotlight effect later also looks a bit different than the picture.
At least, that's what I get :-)
And by the way, Jax is impressive!