Curiosity on Mars

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Cham M
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Curiosity on Mars

Post #1by Cham » 16.08.2016, 01:34

I'm releasing a model of Curiosity on Mars.

This is the best conversion I could make from the original Blender model found on the NASA web site :
http://nasa3d.arc.nasa.gov/detail/curiosity-dirty

Two previews of the model in Celestia :
curiosity1.jpg

curiosity2.jpg


Here's the model for you to enjoy :
Curiosity.zip
(3.91 MiB) Downloaded 187 times
(4.1 MB zip file)
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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FarGetaNik M
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Post #2by FarGetaNik » 16.08.2016, 08:34

Looks pretty good! Well done!

I added the shorter name "MSL" to the ssc, I do this with most of my spacecraft :wink: Does the .DS_Store files serve any purpuse? I just removed them...
How about uploadng it to the Motherlode? I'm feeling like this is the better option releasing an addon unless something is left to discuss.

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Post #3by selden » 16.08.2016, 10:12

The .DS_Store files are a quirk of MacOS. They're ignored by Celestia.
Selden

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Post #4by Goofy » 16.08.2016, 11:57

Well, I can use one word only: astonishing! :clap:
It looks like the real things, so thanks a lot, Cham, you made a wonderful job.
Now finally I can show to my students this wonder on the red planet.

Final.JPG
Very, very, very nice!


Just one thing is missing, anyway, but it's not Cham's fault ... the model shadows. :sad:
I remember that in the last posts of the former forum, Chris wrote about the cmod models shadows, and I found the thread here:
viewtopic.php?f=25&t=15775&start=20&sd=d
He says
The shadows in cmodview will be introduced into Celestia once the code is perfected.

Any idea on what kind of code perfecting is needed?
Anyone still in contact with Chris can ask him about?
Just try to imagine the ISS labs, structures and panels shadowing each other, or Curiosity shadows on Mars surface. :beer:
Bye
Goofy :smile:
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Steve.Bowers
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Post #5by Steve.Bowers » 17.08.2016, 07:25

You can add vague shadows under objects by making a surface texture that fits under the model, with a darkened patch on it. Not ideal, but doable.

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Cham M
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Post #6by Cham » 17.08.2016, 15:01

The problem with this idea is that the shadow would be fixed, and inconsistent with the position of the Sun. It would feel weird.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Post #7by Goofy » 17.08.2016, 16:52

Hi. In the search of a better "environment" for the wonderful Cham's Curiosity model, I found here
http://nasa3d.arc.nasa.gov/detail/gale-crater
an intersting model of the Gale crater. :smoke:
But (there is always a "but"!) it's in .stl file, that's used for 3D models printers.
I know absolutely nothing of 3d modelling, but anyway I tried to do something, so I found here
http://www.nchsoftware.com/3dconverter/
a simple and very little freeware, the NCH Spin 3D File Converter Software.
In a very short time I obtained a 3ds model, that installed on Mars surface results this way:

1-whitish.JPG
Black&white, but looks interesting


But when I go to the Curiosity model, results are not very nice.
Visible triangles, no texture, no normal.... ugly at least! :evil:

2-Ugly but interesting.JPG
Definitely ugly...alas!


Moreover the model should be rotated 180° horizontally to match the real Marrs surface. as you can see in this comparison image.

3-comparison.jpg
As you can see, the model is rotated 180° on the surface


And to fill the cup, it should have to be "thinned" at the edges, in order to smooth that horrible step from the planet's surface!

But my ability on modelling stops here, so I'm asking if here is any willing guy that could solve these problems, and give us what Curiosity deserves, a nice Gale Crater landscape.
Will you? :help:
Thank you so much.
Goofy :smile:
Last edited by Goofy on 17.08.2016, 17:41, edited 1 time in total.
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Post #8by Cham » 17.08.2016, 16:59

This is a job for John VV ! :wink:
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Goofy
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Post #9by Goofy » 17.08.2016, 17:40

You told it, not I! :wink:
Anyway, if John is tuned.... I absolutely agree.
Please!
Goofy :pray:

PS: BTW, NASA's 3X heights enhancement in this model is a bit too much, I would prefer a 2X, no more.
My opinion, obviously.
"Something is always better than nothing!"
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Post #10by Fenerit » 17.08.2016, 18:54

The STL format doesn't support textures, then the conversion in 3DS cannot display them. You could make VT normalmap of the area from xyz elevation data written like ASCII STL by importing the file in Blender or through a GIS program.

Added after 1 hour 7 minutes:
The Curiosity model is beautiful. It can be optimized with the CMODview by merging the meshes and uniquifying the vertices.

As it is: Meshes: 66, Materials: 9, Vertices 152265, Triangles: 50755 -> size on disk: 6.97 mb
optimization: Meshes: 1, Materials: 9, Vertices 65415, Triangles: 50755 -> size on disk: 3.32 mb
Never at rest.
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Goofy
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Post #11by Goofy » 18.08.2016, 17:17

I tried to follow Fenerit's suggestions with CMODview, but the only thing I obtained was a dull black terrain.
This gives me the final confirm that between me and 3d modelling there is an invalicable canyon. :zombie:
Given this, I tried something else.
Searching Curiosity "selfies" I found this image, comparing the rover on 2012 and on 2015:

1-curiosity_selfies_comparison-2012-2015.jpg


As you can see the dirt accumulation increased a lot (probably due to sand storms; do you remember Spirit's solar cells problems on 2008?)
So I decided to try to make a "dirtier" rover, and to compare it with Cham's issued here.
The images are "Cham's", and "dirtiest" , i.e. mine.
I tried to take "consistent" images, as possible.
Start with left (LH) images:

2-Cham's-LH.JPG


3-Dirtyer-LH.JPG


and the right (RH) ones:

4-Cham's-RH.jpg


5-Dirtyer-RH.jpg


Follows in the next post.
Bye
Goofy :smile:
"Something is always better than nothing!"
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Post #12by Goofy » 18.08.2016, 17:29

Let me go on:
here the upper ones:

6-Cham's-UP.jpg


7-Dirtyer-UP.jpg


The side view of the wheels:

8-Wheels-1.jpg


and the oblique view.

9-Wheels-2.jpg


This is a view of the "real" wheels on Mars, but obviously their appearance changes as soil changes.

10-Real wheels on Mars.jpg


I think that this "dirtyer" change makes Curiosity a bit more "a live object" than a "plastic" one, well, this is obviously my opinion, may be I'm wrong.
What do you think about?
The end in the next and last post.
Bye
Goofy :smile:
"Something is always better than nothing!"
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Post #13by Goofy » 18.08.2016, 17:35

Moreover I found here

http://gizmodo.com/curiositys-wheels-are-falling-apart-and-how-we-can-sol-1626826935

this comparison image taken at sol 708 (now we are at sol 1434, so surely things are worst now than here!), showing the six wheels all-around, with the many damages occurred up to then.

Image

This is the Front-Right wheel damage

11-Curiosity-front-RH-wheel-damage.jpg


I think that at least the front wheels should have such damages, do you agree, Cham?
Anyway, just suggestions, nothing else.
Thanks God, I finished! :wink:
Beg your pardon for these very long posts.
Bye
Goofy :smile:
"Something is always better than nothing!"
ASUS G75VX4007H- Intel i7 3630QM, 2.4 GHz-SSD 250GB+SSD 1TB, SATA 3-32GB DDR3 1600 MHz- Nvidia GeForce GTX 780MX 3 GB

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Cham M
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Post #14by Cham » 18.08.2016, 18:02

There is no question that I'll add any damage to the wheels. The model depict the rover a few months after it landed on Mars, lets say.

About Fenerit's suggestion to compress/optimize the model file, my experience in the past showed me that we may get some problems with the models in Celestia. So this is why I did not used the "optimize" options.

Fenerit, look at your model in Celestia using the wireframe mode (control-W). You may get a bad surprise. :weirdface:
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Goofy
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Post #15by Goofy » 18.08.2016, 18:36

OK Cham, I can agree with you about damages. :wink:
But regarding dirtyness?
Opinions?
Bye

Goofy :smile:
"Something is always better than nothing!"
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Post #16by Cham » 18.08.2016, 18:44

I like the textures the way they are. My only desire would be to have higher resolution, so the cables are better defined.

But else, that model is perfect.
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Fenerit M
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Post #17by Fenerit » 19.08.2016, 00:54

Sorry, but I do not see weirdness...

normal
curiosity_1.png


wireframe
curiosity_2.png
Never at rest.
Massimo

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Cham M
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Post #18by Cham » 19.08.2016, 01:09

Hmm, then this is weirder that it isn't weird in this case. :spy:
"Well! I've often seen a cat without a grin", thought Alice; "but a grin without a cat! It's the most curious thing I ever saw in all my life!"

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Fenerit M
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Post #19by Fenerit » 19.08.2016, 08:44

FYI, the optimization works fine also on linestrips got from georeferenced shapefiles, where their polygons shares lots of common vertices. In this case the vertices decimation is close to 50%. On geological SHPs I've gained half a million of lesser vertices throghout.

Added after 17 minutes:
My fault: half-a-million only on Canada shape: thus say more than a million throughout.
Never at rest.
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Post #20by Tacyon » 19.08.2016, 16:12

Its kind of sad to think that it's feet are hurt and it may stop being able to be mobile before it goes to sleep for the last time. :sad: [sad panda face here]
My god - it's full of stars !


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