night rendering problem
I tried to attach the files but the 5 MB limit stopped me (it's 31 mb). I have uploaded the file to my Dropbox folder and am sharing it. You should be able to download the zip file to your computer using the link below and see the contents. If there's a better way to upload this, please let me know.
I hope someone can help me out. I was trying to lecture over creating a night rendering of a playhouse in my class this morning. I used the same steps as in the past but the SketchUp file will just not render properly. The PowerPoint lecture basically shows the students the steps I used for the past couple of years to create a night scene of a playhouse project. I use an hdr file (for atmosphere) as well as a jpg (for background). The lecture shows what I had been able to produce in the past - really nice.
This year, not so much. The zip file has the night-scene.skp file for you to examine. After I do the steps per the lecture I get current-night-scene.jpg. It looks like the sky doesn't want to appear - even though I did the exact same steps as in the lecture and as I've always done before. It also seems that the file reverts to the rnl_prbe.hdri.
What really throws me off as well is that a student was able to get the background to appear. Her files, night-scply.skp and her result: night-scply.jpg, are in the zip file. In her scene, the sky is visible but the scene appears as if on a sunny day! And on the ground in front of the playhouse is the jpg of the fullmoon! Strange!
There must be something, some setting, I'm missing. All suggestions will be greatly appreciated. Thank you for your time.
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Replies to This Discussion
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Permalink Reply by Rich Hart on
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I was able to get to the dropbox by copying the link above and pasting it into my browser address bar.
For some reason just clicking on the link in the discussion didn't work for me...
I'll take a look.
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The nice thing about sending us jpegs is that we can open them in our RPS_ImageQuery.exe viewer (in the bin_Nxt folder in our installation folder) and look at the settings used to render the image, as below:
Then I can use the copy button in that viewer to copy the "statistics" from both images and see what's different.
Here's a screenshot of what I see different (We use Araxis Merge to compare text files.):
Your image, the stats on the right, has the rnl_probe selected as the HDRi sky, hers is the fullmoon.hdr.
She has Sky Visibility On, your have it Off.
She has CustomVisibilitySky Off, while you have it On.
She has Indirect Lighting On, and you don't.
It's probably just a matter of comparing the Visibility checkbox on the Background tab, and the Sky checkbox on the Presets tab. Maybe turn the Background ON so we see it and not the HDRi sky.
When we added the new Preset option to the Presets tab, we may have changed the way the options are set for each preset. I know that if you click on Studio-High Dynamic, we set the HDRi to be rnl_probe, but I think we've always done that.
I'll follow the steps of your PowerPoint and see what I come up with.
I'll use the model that you sent, and will hopefully see what the odd full moon image on the ground is.
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That full moon image is really placed on the ground there in her model.
If you rotate the image and look below the grass, you'll see it:
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Permalink Reply by Jorge Lopez on
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Rich,
Thanks for your speedy replies. The student must have imported the jpg at first instead of her playhouse model! That explains the funny jpg file in her render. I will caution my students about this in the future.
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I'm not sure why my model settings didn't stay. I basically do the same steps in the lecture along with my students. We run the render program together. After your posts, I re-rendered at home the exact file I sent you with the same settings as the lecture and got the image below. It works at home. I wonder if there's a setting change from last year in the classroom computer. I will investigate this further on Monday.
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I've run this again and again at home, adjusting settings and such and the render works just fine. I'm suspecting something at the classroom teacher station. Again thanks for all your help.
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So...how many other powerpoints full of rendering instructions and tips do you have to share?
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Rich,
I have about three PowerPoints for IRendernXt for SketchUp. I use them as guides for my students in my SketchUp class. The first PowerPoint is general stuff about lighting and materials, the second is the night rendering which is in the zip file and the last is setting up a 360 degree view. Actually I am working on a Word doc mini-guide for my students covering most of the settings for IRender nXt (pretty much everything except hdri settings). I'll probably be done with it later this month. I was hoping to post it if that's OK with you.
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Rich,
I must have a gremlin or something. Since this morning I've been working on getting the night scene to work. Last night I was able to get it. I don't know why I'm having such a problem now! I have uploaded another zip file:
https://www.dropbox.com/s/rl1g1zppl3o33sk/night%20problem.zip
You will probably need to copy the link as before to get it to work.
This is what I'm attempting to get from last year using version IRender nXt V: 4.0 LB07nxt:
This is what I'm getting now using IRender_nXt V: LL12nxt 5.0:
It seems the hdr settings and background don't want to stick. I am using Vista at home and Windows XP at work. I even logged off Windows and logged back in to see if somehow my RAM was being used up or something.
The zip file has a doc file with screen shots of the dialogue boxes. You can see that just before I render, the program states that fullmoon.hdr is the one being used. But after I click the render button, it seems to revert to the default rnl_probe. When I hit re-render and look at the settings, they still state that fullmoon.hdr is being used. I even redownloaded fullmoon.hdr from http://www.accustudio.com/exchange/hdri-p thinking the file has gotten corrupt but the hdr file seems to be OK.
To compound the problem, after I rendered the scene one time, I looked underneath and there was the fullmoon.jpg in the same spot as my student! The program must have placed it there (and I thought the student had done it by mistake). I know I didn't place the jpg in the model. The zip file has the original SketchUp file I started with and the one with jpg underneath.
Could you look at this one more time? Can you get the desired result? You can use the fullmoon.hdr and fullmoon.jpg from my previous zip post and the screen captures in the doc file from the zip file to render the scene.
If you can get the scene to work, can you post the step by step screen captures so I can replicate it? I keep thinking there's a button or step I'm missing. I was hoping to get a solution to my students by Monday but it doesn't look good right now.
Whatever you can do will be appreciated.
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Rich,
I hope you didn't think that I meant that you must look at the problem and figure it out by Monday. It was more a comment to myself. You have always been prompt and helpful in your replies.
I will look at it fresh again on Monday as well. It was working for me on Friday evening. We will work on the 360 degree panorama view lecture on Monday and put this night one on the back burner.
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