Integrating 3D models with photography
Interested in integrating your 3D work with the real world? This might help
#
76
05-11-2011
, 01:20 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
#
77
05-11-2011
, 01:21 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
#
78
05-11-2011
, 01:22 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
#
79
05-11-2011
, 01:27 PM
The thin red line
Join Date: Aug 2009
Join Date: Aug 2009
Location: England
Posts: 4,472
Avatar Challenge Winner 2010
#
80
05-11-2011
, 01:29 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
Also, if you are doing displacement. I do not see the density of the mesh of the plane you are attaching the displacement on. So I don't know how dense it is. I followed that tutorial when I was studying displacement.
I see lots of disp tuts to make random terrain but not so much for making structured hard surface displacements. I will look at the tutorial again but as I recall the quality of the result was tied to the mesh density. Which is why I originally did not want to consider displacement. You get a double whammy! You have to make your base mesh dense and then the displacement comes along and makes it even denser.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 05-11-2011 at 01:35 PM.
#
81
05-11-2011
, 01:37 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
#
82
05-11-2011
, 01:42 PM
The thin red line
Join Date: Aug 2009
Join Date: Aug 2009
Location: England
Posts: 4,472
Avatar Challenge Winner 2010
Last edited by daverave; 05-11-2011 at 01:44 PM.
#
83
05-11-2011
, 01:48 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
As you can see I get the same result as piping the (occ+ss) into amb color of the lambert and I also attached a render with the (occ+ss) plugged into the aileron to show that I am not getting any AO when I try to plug the occ into amb color (you can see from the hinge holes).
I made sure the occ settings matched between the two occ nodes. Keep in mind the distance is at 1000 still so the all ao render is dark.
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
#
84
05-11-2011
, 01:54 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
I have read that tutorial a long time ago along with dozens of others and that is pretty much what I did for the version I posted originally. The only difference is the base mesh density. Reduce your plane to a 4 polys and bend it, then apply that displacement and do a smooth preview render see what you get.
You can see the displacement mesh by going to modify>convert>displacement to polygons
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 05-11-2011 at 01:57 PM.
#
85
05-11-2011
, 02:07 PM
The thin red line
Join Date: Aug 2009
Join Date: Aug 2009
Location: England
Posts: 4,472
Avatar Challenge Winner 2010
#
86
05-11-2011
, 02:11 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
Also, I did forget about the approximation editor but I did adjust the displacement tesselation settings.. Also is your plane a poly plane or nurbs plane as per the example. We are not comparing apples to apples if you are using nurbs. Because in that example they start with a 25x25 plane then go in and change render tessellation 5x5 per spane or in other words turn the 5x5 plane into a 125x125 plane! So you end up with a super dense mesh (see below, see my original post that got flack).
I am going to redo my render with the approximation node. But I stand by what I originally said regarding mesh density affecting the displacement quality. The only thing adding an approximation node does is not mental ray automatically subdivides the mesh and then applies the displacement. So you end up with really high mesh density at render. Which was my argument against displacement in the first place!
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 05-11-2011 at 02:25 PM.
#
87
05-11-2011
, 02:18 PM
The thin red line
Join Date: Aug 2009
Join Date: Aug 2009
Location: England
Posts: 4,472
Avatar Challenge Winner 2010
#
88
05-11-2011
, 02:29 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
And so you are not increasing the render tessellation so therefore it is the approximation node that is increasing it automatically. In the end it is just as I said you have to generate a really dense mesh at render time. Which is to be expected but I want to avoid it as the bump in these areas is subtle enough that I do not believe they warrent the cost of the displacement.
thanks for taking the time and pointing me back to that article. It is the most comprehensive one I was able to find as well I added to me permanent displace tips folder
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
#
89
05-11-2011
, 02:35 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
The first is a render at my default base mesh density + displacement.
The second image is the base mesh + a displacement approximation node at high quality fine tessellation + displacement
The only reason image two is better then image one is at render time it is more highly tessellated and took 3 minutes (50%) longer to render. Which by the way, is pretty much what I said in my original post but was contradicted and that is why I stick to my guns unless I see proof. QED (quod erat demonstratum)
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Last edited by ctbram; 05-11-2011 at 02:45 PM.
#
90
05-11-2011
, 02:38 PM
Moderator
Join Date: Jan 2004
Join Date: Jan 2004
Location: Michigan, USA
Posts: 2,998
"If I have seen further it is by standing on the shoulders of giants." Sir Isaac Newton, 1675
Posting Rules Forum Rules
Similar Threads
F8F Bearcat
by Miercoles in forum Work In Progress replies 22 on 14-09-2004
Mech Warrior Movie 1B?
by rahaney in forum SimplyMaya Tutorials replies 0 on 16-11-2003
The ugly duckling Grumman J2F-6
by undseth in forum Work In Progress replies 95 on 18-03-2003
FinalGathering of the Grumman Duck
by undseth in forum Lighting & Rendering replies 3 on 09-02-2003
Topics
Free Courses
Full Courses
VFX News
How computer animation was used 30 years ago to make a Roger Rabbit short
On 2022-07-18 14:30:13
Sneak peek at Houdini 19.5
On 2022-07-18 14:17:59
VFX Breakdown The Man Who Fell To Earth
On 2022-07-15 13:14:36
Resident Evil - Teaser Trailer
On 2022-05-13 13:52:25
New cloud modeling nodes for Bifrost
On 2022-05-02 20:24:13
MPC Showreel 2022
On 2022-04-13 16:02:13