Forum: Bryce


Subject: Make your cave darker with negative lights

electroglyph opened this issue on Aug 03, 2003 ยท 11 posts


electroglyph posted Sun, 03 August 2003 at 10:48 PM

This is an image I created of a cavern. the camera looks out from a passage into an open chamber where the roof has caved in. The chamber was created by using bryce rocks set negative and grouped with a positive bolean terrain to make the tunnels. There was no detail in the chamber till I used a blue light but it made the tunnel look unnaturally bright. I switched the light to negative and highlights showed up pink and the stlagtites had pink bright shadows. I guess a shadow from a negative light is bright. I turned the light red and the resulting darkness had a blue cast. I turned shadows off and got the image you see. Negative lights seem like a great solution to lighting problems I have and the render was only 45min.

Jaymonjay posted Mon, 04 August 2003 at 12:46 AM

Nice lighting! IMO this render would be way cooler without the stalagmites (stalactites? I can never remember which is which!). Anyway, the spikey things seem to clutter the scene. Not all caves have them, don'tcha know. :)


Kylara posted Mon, 04 August 2003 at 5:14 AM

Little tip for you Jaymonjay: In stalactites is the word "tits" and they're at the top of course ;)


TheBryster posted Mon, 04 August 2003 at 6:29 AM Forum Moderator

Kylara: We used to learn this at school.....'tites come down' eg. Tights (pantyhose) come down...?

Available on Amazon for the Kindle E-Reader

All the Woes of a World by Jonathan Icknield aka The Bryster


And in my final hours - I would cling rather to the tattooed hand of kindness - than the unblemished hand of hate...


eelie posted Mon, 04 August 2003 at 6:30 AM

Or...stalactites hand "tight" to the ceiling; stalacmites are "mighty" and hold the ceiling up. Can't remember which teacher taught us that but it's stuck with me all my life. Interesting use of lights, electroglyph. I played once with caverns but didn't get good results. I'll have to try again and use this idea.


tjohn posted Mon, 04 August 2003 at 6:49 AM

The one I learned was stalaCtites have a "c" for "ceiling". StalaGmites have a "g" for "ground".

This is not my "second childhood". I'm not finished with the first one yet.

Time flies like an arrow; fruit flies like a banana.

"I'd like to die peacefully in my sleep like my grandfather....not screaming in terror like the passengers on his bus." - Jack Handy


Flak posted Mon, 04 August 2003 at 7:18 AM

The one I learnt was... when the mites go up, the tights come down.

Dreams are just nightmares on prozac...
Digital WasteLanD


GROINGRINDER posted Mon, 04 August 2003 at 3:51 PM

Great cave shot and thanks for the lighting tip.


shadowdragonlord posted Mon, 04 August 2003 at 6:25 PM

Brycean caves totally rule, it's a passion of mine, good to see others working in the dark, too!


electroglyph posted Mon, 04 August 2003 at 6:51 PM

Second pass, Higher negative lights, shrank the stalactites. I put a tree and some dirt in the room where the ceiling fell in. More specularity on the walls, a little ambient color and reflectivity to the water. I need to blur theterrains used for the florite fountains more the edges of the pools look too sharp. I also might take the black back down(up?) a bit. I like a little blue twilight better.

SevenOfEleven posted Tue, 05 August 2003 at 4:48 PM

Looks great. Have heard of negative lights, was wondering when they can be useful.