AccuRender nXt

advanced rendering for AutoCAD

Trying to create a night scene with HDRi map. Hoping the nap will have a moon in it (as some have the sun in them) So far I have not being successful.

  1. Is there such HDRI with a moon?
  2. What is the best approach to this?
  3. Also here I tagged the glasses as light source with 20watts each, only I cannot seems to get lights above the window lintel which where I thought the HDRi will compensate, but it is not working.

Views: 1008

Reply to This

Replies to This Discussion

I wouldn't try to light with a nightime HDRi-- this is probably a good application for compositing.

I would try something like this:

Start with the Exterior preset.
Set Channels to 2.
Set Sun off.
Set Lights on.

Use the Channel 0 control to set the sky to a very low value-- try 0.002 for a start. Either use a black background, a night photo background-- OR-- composite one in later on.

I don't like the approach of making the windows light sources-- but if you must....
The windows as light sources is because the model was originally an exterior one so the internal partitions are missing. So it is a cheat way out.
Done all you advised including setting the brightness in the tone generator to -0.8(http://nxt.accurender.com/forums/t/4159.aspx)
Here is the result



Done all y


Roy Hirshkowitz said:
I wouldn't try to light with a nightime HDRi-- this is probably a good application for compositing.

I would try something like this:

Start with the Exterior preset.
Set Channels to 2.
Set Sun off.
Set Lights on.

Use the Channel 0 control to set the sky to a very low value-- try 0.002 for a start. Either use a black background, a night photo background-- OR-- composite one in later on.

I don't like the approach of making the windows light sources-- but if you must....
The sky am ok with.
Killing the sky channel and the lights in the widows will show.
So what is next now?
How do I get more environmental illumination?
I doubt you will unless theres something illuminating. There are no lights on in the house. No Street lights glowing. No landscape lighting.

I live out in the middle of nowhere and this is exactly what it looks like this time of night.
Use the sky channel to add as much environmental illumination as you want. Use a black color bg (or another color pic) for compositing purposes.

akinlolu olugboji said:
The sky am ok with.
Killing the sky channel and the lights in the widows will show.
So what is next now?
How do I get more environmental illumination?
So far so good. Things I found out with lights and X-Refing
1. Lights fittings as blocks in origin drawing do not get recognize in Nxt.
2. Lights like RPC are better insert in the final scene.
3. Lights from previous versions AR3/4 do not work well in NXT.


In the scene attached, the parking lights are diffuse lights directed upwards but are expected to be reflected downwards by the reflector, this is not working why?

cite>Roy Hirshkowitz said:
Use the sky channel to add as much environmental illumination as you want. Use a black color bg (or another color pic) for compositing purposes.

Attachments:
Because your reflector is specular (shiny) this is a caustics path-- I don't recommend trying to simulate this with caustics and path tracing, though-- it will probably take too long. If you make the reflector surface less shiny and more matte you'll get some more reflection-- indirect lighting must be on if you're not using the path tracer.

RSS

Search

Translate

Latest Activity

Roy Hirshkowitz replied to Chad Kauffman's discussion Licensing Issues
"Send me a private msg with your info."
yesterday
Chad Kauffman posted a discussion

Licensing Issues

Upgrading a couple of machines and also switch a user profile. I need our current license code to update. Thanks,See More
Tuesday
Kevin Lockwood replied to MES's discussion Animation using WalkAbout in CAD.
"Its been years for me too.  I think Daniel spent some time getting CoMotion running again.  http://www.accustudio.com/marketplace/comotion As to stitching frames, the tool I used to use wasn't working last time I tried, but I did…"
Nov 15
Rich Rosemann replied to MES's discussion Animation using WalkAbout in CAD.
"Is CoMotion no longer being updated?"
Nov 11
Roy Hirshkowitz replied to MES's discussion Animation using WalkAbout in CAD.
"Sorry you're not getting a better response here-- our animation stuff is pretty rudimentary.  Hoping someone will still chime in though.  I haven't looked at this stuff for such a long time, my guess is that the software I used…"
Nov 8
MES posted a discussion

Animation using WalkAbout in CAD.

Hi,I want to create a "fly thru" or "walk thru" animation using Nxt in CAD 2015.  Anyone has experience with this and would like to share how to use it? Any important tips?Thank you!See More
Nov 7
Roy Hirshkowitz replied to Enrico Gheno's discussion Perspective between 3D model and background image on NXT autocad 2015
"There are a couple of ways to do this-- In nXt the WalkAbout window allows you to insert and manipulate background images and your viewpoint independently.  You can either allow nXt to composite the image for you, or save the thing with a…"
Nov 4
Enrico Gheno posted a discussion

Perspective between 3D model and background image on NXT autocad 2015

Hi, I would like to insert my 3D model on an image in background, obviously with the correct position, size and perspective lines.Is there a method to move the 3D model to adapt it at the image in background?At the moment i can only try to setting the position of my 3D model with the Autocad camera and launch the render to control if the position is correct, but it's impossible to find it. I must render my 3D model and put it in my image with Photoshop. Not a great result.Look down here, the…See More
Nov 3

© 2019   Header image courtesy Peter Milner   Powered by

Badges  |  Report an Issue  |  Terms of Service