room lasers

[fpajonk]

Hi everyone,

did anyone of you come up with a nice way to generate room lasers like in this render?

SMART isolated.tif (5.99 MiB) Viewed 5706 times

Essentially, I need laser lines across walls and objects.

I'm placing an Octane light into a very tight pyramid but I'm not too happy with the results.

[brasco]

Hi,

I do this using an ImageTexture in Distribution and scaling it very low on the Y axis using Projection:



Increasing the Beam Width user data (found on the Laser Crosshair Null) widens the beam (the multiplier is if you want it extra thin or fat):





The vertical one is just rotated in the Texture UVW transform but you can do it by rotating the Light itself.

brasco_Octane_Lasers_Projection_01.zip


cheers
brasc

[fpajonk]

That looks fantastic. Would you mind sharing your scene file. I can't really get there. I tried using an image texture with two black bars and a slit in between but the result are odd.

[brasco]

That looks fantastic. Would you mind sharing your scene file. I can't really get there. I tried using an image texture with two black bars and a slit in between but the result are odd.

I forgot to attach the file to the post - I've updated it and the link is at the bottom.

One extra thing to take into account is the size of the actual source - scaling it up and down is like focusing a projector, so for pin-sharp the source needs to be very small.


cheers
brasc

[zoppo]

I don't think I will ever need this, but it is definitely cool to check out that scene - thanks!

[slepy8]

same here, but you never know.
Thumb up for Brasco!

[fpajonk]

Ver cool, Brasco! TNX a lot!

[dotcommer]

Very cool! Adding it to my octane library of useful things!

[nuno1980]

New PPM (Progressive Photon Mapping) kernel will solve problems for the source of laser, of dot light... But only maybe new OR v4.