Fog Dimensions

alvordr · Apr 3, 2009

Fog Dimensions

The capability to alter dimensions for fog would be a great addition to Cheetah3D. It's rather limited as it is and does not give the ability to set a width, height or volume (density is about as close as it gets). No, I'm not talking about hard-defined measurements, but feathered ones, where the user can set the level of fall-off.

jdmac · Apr 28, 2017

Fog in Falcon renderer

alvordr said:
The capability to alter dimensions for fog would be a great addition to Cheetah3D. It's rather limited as it is and does not give the ability to set a width, height or volume (density is about as close as it gets). No, I'm not talking about hard-defined measurements, but feathered ones, where the user can set the level of fall-off.

Up vote :icon_thumbup:

Would this feature actually be considered volumetric material?

Also, would be nice to have fog tag work in Falcon renderer.

Edit: Fixed typo error ... "volumetric" material, not "metric" material

podperson · Apr 28, 2017

This falls under the general category "volumetrics" and has been on the to do list for ages, and in fact is probably a big part of the motivation for the new Falcon renderer.

http://www.cheetah3d.com/forum/showthread.php?t=8349&highlight=volumetrics

jdmac · Apr 28, 2017

podperson said:
is probably a big part of the motivation for the new Falcon renderer.

That's good news.

misoversaturated · Apr 28, 2017

jdmac said:
Also, would be nice to have fog tag work in Falcon renderer.

In the meantime a material solution can be used, it's not simple because the camera position (z-buffer) is not accessible from within the node system.
For animations the material origin needs to be animated according to the camera movement.

jdmac · Apr 28, 2017

misoversaturated said:
In the meantime a material solution can be used ...

Thanks for FFFF.

Impressive.
I understand the concept of increasing the emissive output as distance from camera increases; but I'm going to have to wrap my mind around the "norm" node.

misoversaturated · Apr 29, 2017

jdmac said:
I'm going to have to wrap my mind around the "norm" node.

Ok, but don't let knowledge get into the way of your creativity :wink:

I haven't mastered vector math but just by letting the inner kid roam free and play with the spaghettis in the node editor I came about the usefulness of the Norm Node producing radial gradients when fed positional input.

Study the materials in the Decorated Pig Thread most of which were created accidentally apparently.

jdmac · Apr 30, 2017

misoversaturated said:
Ok, but don't let knowledge get into the way of your creativity :wink:

Thanks for the tips. Though, I have to disagree some ... understanding what each node is supposed to do helps the creative process :smile:
My vision exceeds my skills.

I have been stepping back some from doing complete scenes recently in order to experiment with the material nodes on primitive objects. Simple experimenting and gleaning help from the generous users in the forum go a long ways.

podperson · May 1, 2017

I try to explain all the math in my book — with limited success.

Hasdrubal · May 5, 2017

I have been stepping back some from doing complete scenes recently in order to experiment with the material nodes on primitive objects.

I rendered a thousand balls, boxes and plains

But I have to admit, like everybody else it seems, I'm still far away from getting all out of the nodes.

Fog Dimensions

0

0

0

0

0

0

0

0

0

0