Anatomy and Art

a blog by Sara Egner

Archive for the ‘Uncategorized’ Category

The Wiggle Expression

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Recently at work, I’ve had cause to use the wiggle expression in After Effects.  If you’ve never done this, it’s pretty simple to set up.  First, open up the transform controls in your timeline for the object to which you intend to apply the effect.  Then alt-click the position stopwatch.  You’ll be prompted to add an expression in the timeline under the layer, and there you’ll write wiggle(1,20).  Actually, the numbers will be whatever you want them to be.  The first specifies how many wiggles per second you want to apply.  The second specifies the amplitude of the wiggle in pixels.

In my case, this effect was really great for bobbing around a bunch of molecules in a scene.  But I ran into trouble when I wanted to ease up the effect for more control.  To use my example again, I needed molecules to bob around in liquid, and then pass through a semi-permeable membrane, which required more control over them, and then go back to bobbing about.

screen shot of water molecules moving across a semi-permeable membrane

So, to do this, you need a slider control layer.  So you’ll create a new adjustment layer.  Then under the effects pull-down, up top, go to expression controls, and then slider control.  Then you’ll highlight the number on your expression that you’d like slider control over.  In my case it was the amplitude (see the 20 in the example).  With that number highlighted, you’ll grab the pickwick (looks like a swirl) and literally pull it up toward the slider stopwatch.  You’ll see your code change it it’s worked.

Your wiggle expression will then be defaulted to zero until you dial the slider control up.  Now you can keyframe that feature to begin slowly, or to reduce mid animation for greater position control when you need it.

Some of this is easier to understand when you see it, and doesn’t really lend itself well to explanatory screen shots.  This YouTube video by Ian Killick does a great job of showing the process…

Written by Sara

September 30th, 2017 at 10:19 am

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Cinema 4D’s Use in Medical Illustration

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I ran across this today and posted it to the Anatomy and Art Facebook Page (Did you know that I have one of those?  I totally do!)

http://renderositymagazine.com/how-cinema-4d-became-a-primary-tool-of-medical-illustrators-cms-1521

Anyway, it’s all about how C4D became such a go-to for medical illustrators, written by Nick Sorbin of Renderosity Magazine.  And it really has.  I know I’m happy to be working with it.  The MoGraph tools are really powerful.  And it works great with the ePMV plug-in.  I just wish I could affordably get myself a copy at home as well as the office.  Come on Maxon!  Hear my wish!

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September 27th, 2017 at 6:22 pm

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Logo / Symbol Design

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I don’t often speak about logo or symbol design here, but many of you have likely seen the new symbol by Mike Mitchell saying no to 45.

It’s pretty brilliant.  It ties in the numerical moniker that so many have taken for Trump since his presidency began.  It carries such reminiscence to the anti nazi / no swastika symbols that we’ve seen before, so much so in fact, that I often have to look closely to see which one I’m seeing.

 

pin image nabbed from @vitiosuslepos on Twitter

Overall, I’m just really impressed with how clear the message is.  One glance and you instantly understand who is being talked about, that he is being criticized, and specifically that he is being associated with the Nazi party.  All that, in just a glance.  That’s the kind of thing you want in a logo or symbol.  You want it to make meaning without a lot of explanation.  People think that logos are simple, but I sure find them challenging, and so when I see something so clear as this, I want to bring it up.  I also personally appreciate the sentiment behind it.  So thanks Mike, discoverable as @sirmitchell on Twitter or here at his website (which looks like it may be experiencing extra high view volume this week, so check back later if it’s acting wonky for you) http://sirmikeofmitchell.com/

Written by Sara

August 17th, 2017 at 9:34 pm

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Elemental Haiku

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So, this is really more chemistry and art than anatomy, but I just love this.  Mary Soon Lee has made a haiku periodic table of the elements.

Elemental Haiku

Written by Sara

August 7th, 2017 at 9:08 am

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Neil Gaiman

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Last night, I had the pleasure of seeing Neil Gaiman speak at the Long Center here in Austin.  When I was a teenager, I positively devoured the Sandman comics, and went on from there to follow other of his works.  Neil is a craftsman of story.  He paints with words.  And it was nice to hear him speak again.

The first time I saw him speak, was I think twenty years ago.  I was in college then, and he had worked with the English translation of Princess Mononoke.  People filled into the Paramount to see the screening, but even at peak fullness, we maybe took up about a third of the small theater.  Then most people left after the screening.  And he entertained questions for as long as we had them, until at the end of the evening there were only a very small number of us left.  I walked up and met him afterwards.  I only had to wait for about two or three people in front of me who had brought comics for him to sign.  It was the first time I was ever starstruck and it had been really important to me to be able to thank him for stories that had been so important to me.

Since then, he’s become more and more known a figure.  And last night, I saw a large theater full of people there to see him specifically, hanging on every word.  He even did an encore reading of one of his stories after much applause and standing ovation.  Some coworkers and I made a group outing of it.

photo of ticket

And it was nice, to hear him talk a bit about process, and working through difficult times, and when you get stuck.  It was nice to come back to a familiar voice, now with the wisdom of the last twenty years added to what he had to say, and falling on ears that have gained their own twenty years.  And it was nice to be reminded of that particular sense of story that has been so influential in my life.  So I’m glad that we went.

Written by Sara

July 7th, 2017 at 9:11 am

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Flipside

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I am just returned from Flipside.  And a good time was had.  The theme this year was Unicorns vs. Rainbows: The Reckoning.  As is always the case in battle, the reckoning won.

photo of Flipside ticket
My string rainbow art project never actually made it up, but the high horse (a plastic horse on top of a ladder, upon which one may say anything) went quite well.  I’m realizing though, that I used to be so much more involved in photographing the event, and I think that’s something that I need to get back to.  Escalating privacy concerns over the years, have left photographers in an awkward space out there.  All in all, there was a lot of really fun artwork out there, and a lot of good people to enjoy it with.  Next stop, my return to Burning Man!  And then I think maybe next year, I might get up to some different kinds of adventures.

Written by Sara

May 31st, 2017 at 9:08 pm

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Swirled Up In Sheets

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I have finally finished the new painting.  This one is tiny, and it’s silly that it’s taken me so long to finish this, but it came out well in the end.  I’m calling it “Swirled Up In Sheets”

painting - "Swirled up in Sheets"

More paintings are up at http://snapshotgenius.com/paint

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May 13th, 2017 at 1:49 pm

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Neurons

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So I recently learned about some very cool things.  First off, there is a site out there that catalogs neurons  http://neuromorpho.org/  It’s great, you can browse them by brain region, by species, by cell type, and pull up and view a vast assortment of known neurons.  So that’s pretty awesome on it’s own.  But I was lucky enough to learn about this site in connection with the work of Nick Woolridge, who has been writing code to make the data found there importable into Cinema 4D or ZBrush.  This is his video on Vimeo explaining the process of using this data in Cinema 4D and where to find his script.

Using the NeuronBuild C4D script from Biomedical Communications on Vimeo.

Some of the larger neurons can bog down the computer, but I had good luck trying it myself, and I’m really excited about having this available.

neuron import into C4D

Written by Sara

March 28th, 2017 at 11:46 am

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Selling Merchandise

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I’ve had a merchandise link here for a long time now.  At the time that I first created the store, I put a lot of thought and effort into designs and set up a store on Cafe Press.  And early on I sold a few things.  I still have my sliding filament gym bag, and mouse cochlea mouse pad.  But I didn’t really keep up with the store, or promote it over the years.  You don’t make very much from your sales on Cafe Press, so you have to sell a lot before you actually see any money from any of those sales.  But my impression was, that those commissions (as they call them) would stay put and continue to add up if I ever got back to promoting the store again.  So here I am, years later, looking to come back to it, and I find that I have zero dollars waiting for me.  Zero.  Apparently, if you let things sit for a while, Cafe Press has the policy of taking all of your earnings and telling you that you’ve paid it in fees.  They basically have a fee of however much you have with them that you pay in the event that your store sits for an extended period of time.  So, I’ve closed my account with them and I’m not going to work with them anymore myself.  And I wanted to say something here for any artists who might be thinking about starting a store with them.  I may start up another store again somewhere else sometime.  But it’s never been intended as a primary source of income for me, so for me, I’d like to work with a company that can handle the lulls without cleaning out all my earnings.

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March 17th, 2017 at 2:19 pm

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She Wades In

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I can’t believe I didn’t update here, but I did wind up finishing the new painting.  I’m calling it, “She Wades In” and I’ve been really happy with the response I’ve been getting for her.  The canvas has already been sold and shipped off to Oregon, and I am in the process of selling prints now.

painting

Written by Sara

March 11th, 2017 at 8:09 pm

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