Author Topic: Tree stuff  (Read 2312 times)

Offline luvsmuzik

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Tree stuff
« on: December 01, 2016, 01:09:57 PM »
Another Blender tree with v3Powerfractal for bark color. I am trying to get this PF to displace also. Is that possible?

Gras7 TGO population
Crabgrass1 TGO population AP? Thanks!

Fiddling with strata and shaders

Ran it through Poseray and put a bump on it.
« Last Edit: December 01, 2016, 02:40:58 PM by luvsmuzik »

Offline luvsmuzik

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Re: Tree stuff
« Reply #1 on: December 01, 2016, 04:56:59 PM »
Here is a clip render of tree with image and PF (black&white) function applied. So yes you can!

Offline N-drju

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Re: Tree stuff
« Reply #2 on: December 02, 2016, 11:55:49 AM »
What a nice idea!

Your solutions... make my trees great again... ;D
"I don't know what 'pokygon' is but I like it."

Offline bobbystahr

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Re: Tree stuff
« Reply #3 on: December 02, 2016, 02:34:05 PM »
Looks more like a bump map actually. The only way to get imported geometry to displace is with this:
something borrowed,
something Blue.
Ring out the Old.
Bring in the New

bobbystahr

Offline luvsmuzik

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Re: Tree stuff
« Reply #4 on: December 02, 2016, 09:28:43 PM »
That is two different PFs one for color and one for displacement(B&W) through a transform input world position and set at neg4. Then a speckled B&W as displacement image, dunno, it worked.

Offline Oshyan

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Re: Tree stuff
« Reply #5 on: December 02, 2016, 09:35:03 PM »
I think what Bobby is saying is that in Terragen you have Ray Trace Objects enabled by default, and as long as that is enabled and you do not override it on a per-object basis, then you will not get displacement. Instead, displacements are rendered as bump maps, which only affect shading and do not deform surface geometry. So you *will* see an effect, but it will not change the silhouette (and actual shape) of the object. It just simulates the appearance of bumps.

- Oshyan

Offline bobbystahr

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Re: Tree stuff
« Reply #6 on: December 02, 2016, 11:27:57 PM »
I think what Bobby is saying is that in Terragen you have Ray Trace Objects enabled by default, and as long as that is enabled and you do not override it on a per-object basis, then you will not get displacement. Instead, displacements are rendered as bump maps, which only affect shading and do not deform surface geometry. So you *will* see an effect, but it will not change the silhouette (and actual shape) of the object. It just simulates the appearance of bumps.

- Oshyan

Thanks man, I'm a bit short on explanations but that nails what was happening inside my head when I wrote that.
something borrowed,
something Blue.
Ring out the Old.
Bring in the New

bobbystahr

Offline luvsmuzik

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Re: Tree stuff
« Reply #7 on: December 03, 2016, 12:52:41 AM »
I think what Bobby is saying is that in Terragen you have Ray Trace Objects enabled by default, and as long as that is enabled and you do not override it on a per-object basis, then you will not get displacement. Instead, displacements are rendered as bump maps, which only affect shading and do not deform surface geometry. So you *will* see an effect, but it will not change the silhouette (and actual shape) of the object. It just simulates the appearance of bumps.

- Oshyan

Thanks man, I'm a bit short on explanations but that nails what was happening inside my head when I wrote that.

Thank you both for those replies. I knew I had had success with objects that were already displaced and used. Here I was trying to give the PF a not so smooth look. It is okay that I just *see a variation* rather than just a smear of two colors. Thanks for the heads up on all of that. I can make a displaced tree trunk but I do not know what is a reasonable size object  for a beautiful tree, or anything else. I shall study free share file sizes to compare. I have probably enough free shares for a couple of forests and at least one jungle, but it is fun to try to make something for me. ;D

Offline luvsmuzik

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Re: Tree stuff
« Reply #8 on: December 03, 2016, 03:44:01 PM »
This is an example of a displaced tree trunk (out of program) using a vertex group for just the lower trunk. An image texture is applied to entire tree. I think it resembles a realistic tree trunk. So I do understand what you are saying about displacing geometry. In Terragen, only objects listed in "displaceable objects", other than terrain, will displace or no?

Offline fleetwood

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Re: Tree stuff
« Reply #9 on: December 03, 2016, 04:09:35 PM »
Nice tree experiments.

" In Terragen, only objects listed in "displaceable objects", other than terrain, will displace or no?"
 
It used to be that way but now for imported objects like your trees, we have the "Render Method" check box available to choose "force displacement" (geometry gets changed) or "Force RayTrace"  (simulated- meaning the displacement specified in you PFs is interpreted only as a shading pattern on the object surface)

Offline Dragonfire

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Re: Tree stuff
« Reply #10 on: December 03, 2016, 04:30:50 PM »
Very interesting as there is always been to learn for me!  :D

Offline Dragonfire

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Re: Tree stuff
« Reply #11 on: December 04, 2016, 05:04:34 AM »
or complex objects, I find it better to use a bump map without shifting the volume because it would otherwise be confusing  ;)

Picture 2:
The hovering sphere is volume shifting the other bump, everything has front and cons
« Last Edit: December 04, 2016, 07:46:11 AM by Dragonfire »

Offline luvsmuzik

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Re: Tree stuff
« Reply #12 on: December 04, 2016, 12:47:38 PM »
Picture 2:
The hovering sphere is volume shifting the other bump, everything has front and cons

Ha! Walk like an Egyptian comes to mind.....Those are terrific examples!

Offline Dragonfire

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Re: Tree stuff
« Reply #13 on: December 04, 2016, 01:41:47 PM »
Picture 2:
The hovering sphere is volume shifting the other bump, everything has front and cons

Ha! Walk like an Egyptian comes to mind.....Those are terrific examples!

https://www.youtube.com/watch?v=Cv6tuzHUuuk

Yes  ;) ;) ;)

Offline luvsmuzik

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Re: Tree stuff
« Reply #14 on: December 05, 2016, 11:27:11 AM »
Like Robinhood, I am still in the trees.

Saw a recent back-lit image and was reminded of my attempt with willows.I have about 15 renders, but will show three. I call this After the Rain.

Then we had snow showers yesterday, so of course.....I had to do some pines. Free conifer object and a pitiful pine tipped in snow.