Emitter with light in direction of the surface normal ...

Emitter with light in direction of the surface normal ...#100522

By Micha - Mon Dec 19, 2005 4:15 pm

- Mon Dec 19, 2005 4:15 pm #100522

... could be used as MXI texture projector or for fast spot lights without caustic or as simple directional light.

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Re: Emitter with light in direction of the surface normal ..#100530

By NicoR44 - Mon Dec 19, 2005 4:46 pm

- Mon Dec 19, 2005 4:46 pm #100530

Micha wrote:... could be used as MXI texture projector or for fast spot lights without caustic or as simple directional light.

Nice one!

Curt Roth, formally known as NicoR44.

#100531

By rivoli - Mon Dec 19, 2005 4:50 pm

- Mon Dec 19, 2005 4:50 pm #100531

sorry micha but i don't get what you mean. light from emitter is normals dependant already, what do you mean by "light in direction of the surface normal"?

#100535

By Mihai - Mon Dec 19, 2005 4:56 pm

- Mon Dec 19, 2005 4:56 pm #100535

The light comes out of the plane more like a window now, yes in the direction of the normal but it's not parallel. I guess that's what Micha ment. If you want parallel light beams currently you have to put the emitter in a container which can add to render time due to bounces.

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#100538

By rivoli - Mon Dec 19, 2005 4:59 pm

- Mon Dec 19, 2005 4:59 pm #100538

Mihai Iliuta wrote: yes in the direction of the normal but it's not parallel.

yep, i should have guessed.

#100605

By Hervé - Mon Dec 19, 2005 7:06 pm

- Mon Dec 19, 2005 7:06 pm #100605

actually, does a plane emitter emits light starting at borders for now....? (like LW area lights..?)

Yes putting the emitter in a tube makes it a bit like a canon light with its long tube, forcing the light to go "almost " staright...

Nice idea... to imitate sunlight too.... paralell rays... very nice.. but then the shadows would be very hard... mmmm I guess you said mxi mapped then you could also soften the borders, while keeping straight rays of light....

Nice idea again Micha....

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#100636

By Micha - Mon Dec 19, 2005 8:30 pm

- Mon Dec 19, 2005 8:30 pm #100636

... some days befor I have build a lightsource like this - an emitter with a stretched fence in front like thousand little tubes. It was extrem slow, but I have projected a blury image from the MXI emitter to a plane.