Re: Future of Naiad
It's an strategic moment right now and I can only speculate but one thing is clear, the companies that own their own destiny and the product is their core business are safe bet. The rest... Lets see in 2 years. Jb I guess I am trying to get my own roadmap sorted for the future as many of us do from time to time, it seems it is an amazing time for a divergence and abundance of technology but also somewhat confusing as to where some older technology fits (or more precisely will fit) into the grander scheme. Sorry for the long winded post, very much thinking out loud at this point ; ) N From: softimage-boun...@listproc.autodesk.com [softimage-boun...@listproc.autodesk.com] on behalf of Raffaele Fragapane [raffsxsil...@googlemail.com] Sent: 15 August 2013 10:40 To: softimage@listproc.autodesk.com Subject: Re: Future of Naiad It might be worth figuring out what you want out of your choices. If you want a mature solution with well integrated production tested solvers, a rendering engine with inifnite licenses that is very highly tailored to scale massively with those simulations, you won't beat Houdini, no matter what rendering engine you tack on in another package. Bifrost is an interesting departure from shoving things into the host and obscuring them for Autodesk, and it relies on relatively fresh or refreshed (but not untested or immature) libraries/frameworks, and it seems to be wanting to attempt a certain degree of generically approaching some problems, plus it's likely, when it will be out, to have some very good solvers. You are betting on months to a year or more away though (assuming it will even be available and viable in 2015 and patched in an eventual 2015.5). If you can wait for that long, wait, but if you want things sooner than that Houdini already has some great solvers, now has solid OpenVDB integration, and it's impossible to beat Mantra's scaling economically, and hard to beat it in other regards too. You only need one license of Houdini to begin with, and whether Naiad will blow it out of the water or not, it's unlikely to be a waste of money. On Thu, Aug 15, 2013 at 8:43 AM, Nick Angus n...@altvfx.com wrote: Interesting, thanks Luc-Eric, it certainly looks very tied in to Maya at this stage, although I am sure it is mostly a front end. Much in the way Pixomondo integrated Naiad into Max, although deeper by the looks of all the adaptive stuff. I imagine this level of integration would be a bit trickier in Soft due to the older school nature of the IO. I must admit at this point I am pretty tempted to start looking into Houdini, even just for fluids it could be good value, particularly with Arnold integration. I don’t want to bash on Maya any more than necessary, but if I am going to pick a partner for Soft to extend it into areas of simulation that it struggles in I don’t think I will we going down the Maya path… N From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Luc-Eric Rousseau Sent: Thursday, 15 August 2013 5:34 AM To: softimage@listproc.autodesk.com Subject: Re: Future of Naiad The siggraph user group meeting videos were posted. The one with bifrost is called Behind the curtain of RD http://area.autodesk.com/Anaheim2013 -- Our users will know fear and cower before our software! Ship it! Ship it and let them flee like the dogs they are!
Re: Future of Naiad
Thanks for posting Luc! Is AD ever going to get rid of the mega annoying requirement for logging in to The Area..?? Morten Den 14. august 2013 kl. 21:33 skrev Luc-Eric Rousseau luceri...@gmail.com: The siggraph user group meeting videos were posted. The one with bifrost is called Behind the curtain of RD http://area.autodesk.com/Anaheim2013 https://connect.autodesk.com/owa/redir.aspx?C=bK-GRTdfLUiXi2n0RgTMcYqHgi28bNAIpkHDsL63ZwuMDdYAFdDXoVTVWcZLNdA1fgkawqvC1gw.URL=http%3a%2f%2farea.autodesk.com%2fAnaheim2013
Re: Future of Naiad
Is AD ever going to get rid of the mega annoying requirement for logging in to The Area..?? Haha, that is exactly what kept me away from watching the video. Too lazy to even try to remember my login, and I figured reading the comments in this thread would be enough :)
RE: Future of Naiad
You don’t have to login to watch these videos. Most (if not all) of the movies from events can be viewed without logging in. Getting to stuff, like tutorials and downloads, then logging in is required. G From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Thomas Volkmann Sent: 15 August 2013 08:43 To: softimage@listproc.autodesk.com Subject: Re: Future of Naiad Is AD ever going to get rid of the mega annoying requirement for logging in to The Area..?? Haha, that is exactly what kept me away from watching the video. Too lazy to even try to remember my login, and I figured reading the comments in this thread would be enough :) attachment: winmail.dat
RE: Future of Naiad
Oh, you are right. But the link that was provided required a login for whatever reason Graham Bell graham.b...@autodesk.com hat am 15. August 2013 um 11:01 geschrieben: You don’t have to login to watch these videos. Most (if not all) of the movies from events can be viewed without logging in. Getting to stuff, like tutorials and downloads, then logging in is required. G From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Thomas Volkmann Sent: 15 August 2013 08:43 To: softimage@listproc.autodesk.com Subject: Re: Future of Naiad Is AD ever going to get rid of the mega annoying requirement for logging in to The Area..?? Haha, that is exactly what kept me away from watching the video. Too lazy to even try to remember my login, and I figured reading the comments in this thread would be enough :) - Autodesk Limited Registered Office: One Discovery Place, Columbus Drive, Farnborough, Hampshire GU14 0NZ Registered in England and Wales, No. 1839239
RE: ICE - polygon grow selection to unfold
You would need to use Polygonal Description and Point Position attributes. I think you can write a custom ice node to do some math and output the new pointposition. attachment: winmail.dat
Import Model/Ref Model Trigger
Mornin' all, When does the siOnRefModelLoad event get triggered? What I want is something that is triggered on, ideally, import of models/ref models. Is this a) possible and b) the right event to do this? As I currently have it, it's only triggered when a scene containing ref models is loaded - which is not ideal. Cheers G
RE: Import Model/Ref Model Trigger
Scratch that. siOnEndFileImport seems to do the trick cheers From: softimage-boun...@listproc.autodesk.com [softimage-boun...@listproc.autodesk.com] on behalf of Gareth Bell [gareth.b...@primefocusworld.com] Sent: 15 August 2013 11:45 To: softimage@listproc.autodesk.com Subject: Import Model/Ref Model Trigger Mornin' all, When does the siOnRefModelLoad event get triggered? What I want is something that is triggered on, ideally, import of models/ref models. Is this a) possible and b) the right event to do this? As I currently have it, it's only triggered when a scene containing ref models is loaded - which is not ideal. Cheers G
Re: Future of Naiad
i can watch those video even on my ipad without logging in?
On Thursday, August 15, 2013, Morten Bartholdy wrote:
**
Thanks for posting Luc!
Is AD ever going to get rid of the mega annoying requirement for logging
in to The Area..??
Morten
Den 14. august 2013 kl. 21:33 skrev Luc-Eric Rousseau
luceri...@gmail.comjavascript:_e({}, 'cvml', 'luceri...@gmail.com');:
The siggraph user group meeting videos were posted. The one with
bifrost is called Behind the curtain of RD
http://area.autodesk.com/Anaheim2013https://connect.autodesk.com/owa/redir.aspx?C=bK-GRTdfLUiXi2n0RgTMcYqHgi28bNAIpkHDsL63ZwuMDdYAFdDXoVTVWcZLNdA1fgkawqvC1gw.URL=http%3a%2f%2farea.autodesk.com%2fAnaheim2013
Re: Future of Naiad
here is the text link Luc Eric posted (which works without a login) http://area.autodesk.com/Anaheim2013 here is where it was actually linked to in html - and *does* require a login https://connect.autodesk.com/owa/redir.aspx?C=bK-GRTdfLUiXi2n0RgTMcYqHgi28bNAIpkHDsL63ZwuMDdYAFdDXoVTVWcZLNdA1fgkawqvC1gw.URL=http%3a%2f%2farea.autodesk.com%2fAnaheim2013 which looks like someones computer at autodesk... do you have the password for this Luc? ;) On 15 August 2013 15:44, Adam Seeley adam_see...@yahoo.com wrote: Try to Copy paste the link instead of clicking on it... A. - Yoyo Digital Ltd. 07956 976 245 http://www.linkedin.com/in/adamseeleyuk https://vimeo.com/adamseeley From: Luc-Eric Rousseau luceri...@gmail.com To: Morten Bartholdy x...@colorshopvfx.dk; softimage@listproc.autodesk.com softimage@listproc.autodesk.com Sent: Thursday, 15 August 2013, 14:38 Subject: Re: Future of Naiad i can watch those video even on my ipad without logging in? On Thursday, August 15, 2013, Morten Bartholdy wrote: Thanks for posting Luc! Is AD ever going to get rid of the mega annoying requirement for logging in to The Area..?? Morten Den 14. august 2013 kl. 21:33 skrev Luc-Eric Rousseau luceri...@gmail.com: The siggraph user group meeting videos were posted. The one with bifrost is called Behind the curtain of RD http://area.autodesk.com/Anaheim2013
Re: Flocking particles that stick to character topology
If you go that route, you could do it in the same cloud by reinterpreting locations in a post-sim icetree. That way the sim runs cleanly every frame on the static mesh and then appears in the enveloped one. You may have motionblur problems though. If you care about it, you can cache out the as it appears on the enveloped mesh and then compute the PointVelocity yourself between the CacheOnFile (read) node when you're loading it back in. (PointVelocity is one of the attributes used for defining motionblur.) On Wed, Aug 14, 2013 at 8:00 PM, Matt Morris matt...@gmail.com wrote: Have a look at the node: re-interpret the locations to new geometry. I think you'll need to sim on a static version of your character mesh and reinterpret to an enveloped version of the mesh. On 15 August 2013 00:40, Eric Lampi ericla...@gmail.com wrote: I have a simulation where I am flocking particles with Emflock and pushing them back onto the emission geo. So they flow along the surface and interact, and it's exactly what I need. However, with an enveloped character however, the particles do not inherit any kind of velocity and the slide over the surface as the geo moves. The closest thing I can think of to describe it is little groups of bugs crawling along the surface of a character... They need to flow, but the also need to deform along with and stick to the character. Particles are emitted all at once to fill the surface, and I have copied the points positions and generated new points in another un-simulated cloud, but now, what is the best way to keep them stuck to the body as it moves? I'm a bit of a nOOb with EMflock, and it seems like this is the sort of thing that it would be great at, I just don't think I have figured out what to use to make this happen. Thanks Eric Freelance 3D and VFX animator http://vimeopro.com/user7979713/3d-work -- www.matinai.com
Re: Future of Naiad
ho right, thanks Outlook ; ) Le 2013-08-15 10:21, Rob Chapman tekano@gmail.com a écrit : here is the text link Luc Eric posted (which works without a login) http://area.autodesk.com/Anaheim2013 here is where it was actually linked to in html - and *does* require a login https://connect.autodesk.com/owa/redir.aspx?C=bK-GRTdfLUiXi2n0RgTMcYqHgi28bNAIpkHDsL63ZwuMDdYAFdDXoVTVWcZLNdA1fgkawqvC1gw.URL=http%3a%2f%2farea.autodesk.com%2fAnaheim2013 which looks like someones computer at autodesk... do you have the password for this Luc? ;) On 15 August 2013 15:44, Adam Seeley adam_see...@yahoo.com wrote: Try to Copy paste the link instead of clicking on it... A. - Yoyo Digital Ltd. 07956 976 245 http://www.linkedin.com/in/adamseeleyuk https://vimeo.com/adamseeley From: Luc-Eric Rousseau luceri...@gmail.com To: Morten Bartholdy x...@colorshopvfx.dk; softimage@listproc.autodesk.com softimage@listproc.autodesk.com Sent: Thursday, 15 August 2013, 14:38 Subject: Re: Future of Naiad i can watch those video even on my ipad without logging in? On Thursday, August 15, 2013, Morten Bartholdy wrote: Thanks for posting Luc! Is AD ever going to get rid of the mega annoying requirement for logging in to The Area..?? Morten Den 14. august 2013 kl. 21:33 skrev Luc-Eric Rousseau luceri...@gmail.com: The siggraph user group meeting videos were posted. The one with bifrost is called Behind the curtain of RD http://area.autodesk.com/Anaheim2013
Aw: Re: Flocking particles that stick to character topology
You probably wont even have to cache that out for correct PointVelocity. Just store the PointPosition at Previous frame in a custom attribute in your Simulation Tree, and calculate the difference between this Attribute and the current Pointposition in the Post-Sim Stack as your new PointVelocity. Gesendet:Donnerstag, 15. August 2013 um 16:28 Uhr Von:Alan Fregtman alan.fregt...@gmail.com An:XSI Mailing List softimage@listproc.autodesk.com Betreff:Re: Flocking particles that stick to character topology If you go that route, you could do it in the same cloud by reinterpreting locations in a post-sim icetree. That way the sim runs cleanly every frame on the static mesh and then appears in the enveloped one. You may have motionblur problems though. If you care about it, you can cache out the as it appears on the enveloped mesh and then compute the PointVelocity yourself between the CacheOnFile (read) node when youre loading it back in. (PointVelocity is one of the attributes used for defining motionblur.) On Wed, Aug 14, 2013 at 8:00 PM, Matt Morris matt...@gmail.com wrote: Have a look at the node: re-interpret the locations to new geometry. I think youll need to sim on a static version of your character mesh and reinterpret to an enveloped version of the mesh. On 15 August 2013 00:40, Eric Lampi ericla...@gmail.com wrote: I have a simulation where I am flocking particles with Emflock and pushing them back onto the emission geo. So they flow along the surface and interact, and its exactly what I need. However, with an enveloped character however, the particles do not inherit any kind of velocity and the slide over the surface as the geo moves. The closest thing I can think of to describe it is little groups of bugs crawling along the surface of a character... They need to flow, but the also need to deform along with and stick to the character. Particles are emitted all at once to fill the surface, and I have copied the points positions and generated new points in another un-simulated cloud, but now, what is the best way to keep them stuck to the body as it moves? Im a bit of a nOOb with EMflock, and it seems like this is the sort of thing that it would be great at, I just dont think I have figured out what to use to make this happen. Thanks Eric Freelance 3D and VFX animator http://vimeopro.com/user7979713/3d-work -- www.matinai.com
Re: Re: Flocking particles that stick to character topology
Cool, thanks for the suggestions! Eric Freelance 3D and VFX animator http://vimeopro.com/user7979713/3d-work On Thu, Aug 15, 2013 at 10:43 AM, Leo Quensel le...@gmx.de wrote: You probably won't even have to cache that out for correct PointVelocity. Just store the PointPosition at Previous frame in a custom attribute in your Simulation Tree, and calculate the difference between this Attribute and the current Pointposition in the Post-Sim Stack as your new PointVelocity. *Gesendet:* Donnerstag, 15. August 2013 um 16:28 Uhr *Von:* Alan Fregtman alan.fregt...@gmail.com *An:* XSI Mailing List softimage@listproc.autodesk.com *Betreff:* Re: Flocking particles that stick to character topology If you go that route, you could do it in the same cloud by reinterpreting locations in a post-sim icetree. That way the sim runs cleanly every frame on the static mesh and then appears in the enveloped one. You may have motionblur problems though. If you care about it, you can cache out the as it appears on the enveloped mesh and then compute the PointVelocity yourself between the CacheOnFile (read) node when you're loading it back in. (PointVelocity is one of the attributes used for defining motionblur.) On Wed, Aug 14, 2013 at 8:00 PM, Matt Morris matt...@gmail.com wrote: Have a look at the node: re-interpret the locations to new geometry. I think you'll need to sim on a static version of your character mesh and reinterpret to an enveloped version of the mesh. On 15 August 2013 00:40, Eric Lampi ericla...@gmail.com wrote: I have a simulation where I am flocking particles with Emflock and pushing them back onto the emission geo. So they flow along the surface and interact, and it's exactly what I need. However, with an enveloped character however, the particles do not inherit any kind of velocity and the slide over the surface as the geo moves. The closest thing I can think of to describe it is little groups of bugs crawling along the surface of a character... They need to flow, but the also need to deform along with and stick to the character. Particles are emitted all at once to fill the surface, and I have copied the points positions and generated new points in another un-simulated cloud, but now, what is the best way to keep them stuck to the body as it moves? I'm a bit of a nOOb with EMflock, and it seems like this is the sort of thing that it would be great at, I just don't think I have figured out what to use to make this happen. Thanks Eric Freelance 3D and VFX animator http://vimeopro.com/user7979713/3d-work -- www.matinai.com
RE: Dealing with CAD files format
Talk about timing- I have recently been dealing with a .igs file as well. Deep Exploration did not import it well at all and 3D Max just choked on it. I imported it into AutoCAD where it looked relatively decent and exported it as .fbx. SoftImage imported the .fbx really well with just a few pieces out of place. I think I got lucky this time since in the past I've had a hard time wrangling with .igs files and know how messy they can be. Thank you, Oliver for the question and thank you all for the responses and advice, I'll be checking into the recommended file formats and MoI since I'm sure I will end up more of these file formats to work with in the future. Christy -Original Message- From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Leoung O'Young Sent: Wednesday, August 14, 2013 10:57 AM To: Stephan Hempel; softimage@listproc.autodesk.com Subject: Re: Dealing with CAD files format Thanks for the info. On 8/14/2013 10:55 AM, Stephan Hempel wrote: I don't know. As far as I know MoI imports only 3dm, iges, sat, step, ai, eps, pdf and dxf. No Parasolid files. From MoI I export obj. And with the export options you have good control over the resulting mesh. Stephan. __ eisblau | produkt + prozessvisualisierung | animation + visual effects Stephan Hempel stephan.hem...@eisblaufx.net Tel +49.(0)3643.251186 Goetheplatz 9b www.eisblau.deFunk +49.(0)179.1356295 99423 Weimar am Mittwoch, 14. August 2013 um 16:36 schrieben Sie: LOY Stephan, LOY So Step files are better than Parasolids files? LOY Are you exporting obj from MoI to bring into XSI? LOY Thanks, LOY Leoung LOY On 8/14/2013 7:43 AM, Stephan Hempel wrote: Hi would strongly recommend step-Files and convert them with MoI. So you have full control over how the geometry gets meshed (MoI has quite some options for tuning). And ask the client to keep the assembly groups intact. So you have all building blocks properly named as separate objects and don't have to deal with one single piece of geometry. This way I had never any problems. Try to stay away from IGES. I had always problems with missing surfaces. STL and WRML exports are already meshed. So it can be a bit of an problem to clean the geometry. Stephan. am Dienstag, 13. August 2013 um 22:15 schriebst Du: Hi guys, Next week I shall receive a mecanical pieces generated with Solidworks. Because I'm dealing with an agency, they might won't be able to send an obj or fbx file. They propose various formats : Assemblage or Assembly (.asm) Part (.prt) Parasolid (.x_t) Iges (.igs) Step AP203 or AP214 (.stp) IFC 2x3 (.ifc) ACIS (.sat) STL (.stl) VRML (.wrl) Universal3D (.u3d) 3Dxml (.3dxml) Catia Graphics (.cgr) So my question is, what format should I ask and what software would you recomend to open and save it in a classic polymesh format ? (preferably free...) I have an old Deep Exploration, I was thinking giving it a try. But if someone has a cool winning format + software to advice... Thank you ! Olivier CONFIDENTIALITY NOTICE - THIS E-MAIL TRANSMISSION MAY CONTAIN INFORMATION THAT IS PRIVILEGED, CONFIDENTIAL, PROPRIETARY, SUBJECT TO COPYRIGHT, AND/OR EXEMPT FROM DISCLOSURE UNDER APPLICABLE LAW. IT IS FOR THE USE OF INTENDED RECIPIENTS ONLY. If you are not an intended recipient of this message, please notify the original sender immediately by forwarding what you received and then delete all copies of the correspondence and attachments from your computer system. Any use, distribution, or disclosure of this message by unintended recipients is not authorized and may be unlawful.
RE: just not normal
Joey, ICE doesn't convert locations directly. It can display them as vectors for debugging purposes but under the hood they are really a triangle ID + barycentric coordinates. Or perhaps you meant true vectors? The list of attributes that ICE will convert to the self's reference frame is here: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/index.html?url=files/ICE_trees_GettingandSettingDatainICETrees.htm,topicNumber=d30e274098 (scroll down to Reference Frames, right before Setting Data). You can trust ICE to use the correct math, 3x3 or 4x4 matrices, depending on whether the attribute is a true vector or position, but if it's a custom attribute then it's up to you to know what it is and take the appropriate action. The book that Matt mentioned looks interesting as an intuitive, geometrical approach. For a more technically oriented book I'd recommend Shilov's Linear Algebra - when I was at uni the assigned textbook was awful but Shilov's just clicked with me. gray From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:52 PM To: softimage@listproc.autodesk.com Subject: RE: just not normal It will differentiate how to handle orientation vectors differently from position vectors which is the solution to the problem you said you couldn't solve on your own. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:49 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal I'm certain that it would be very useful, but what I am more interested in is what ICE is pre-computing that changes what might be normal expectations such as the example provided with locations. With ICE, positions are converted to global using 4x4 matrices and locations are converted to global using 3x3 matrices. Will a linear algebra book be able to tell me that, in context to ICE? -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:39 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal The documentation you're searching for is a linear algebra textbook. I think you'll find the subject very useful and directly applicable to your work on many fronts. Practical Linear Algebra: A Geometry Toolbox by Gerald Farin is a decent starting point as it discusses the fundamentals in plain english, but it's intended to complement a linear algebra course, not replace it. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:23 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal WOW! What a difference two nodes make! I converted the 4x4 Matrix down to a 3x3 Matrix omitting Translation in the process, and plugged that into Multiply Vector by Matrix and...EVERYTHING WORKS! The flipping is gone. I had solved the problem by taking three points on the surface, converting to global position on each, then deriving a normal vector from them. It was rock solid and this solution has the same results as that. My preference was to get the normal from the location, that way if the object surface is irregular it will always work as expected. This solves that problem very elegantly! I'm curious, but is there any documentation anywhere that gives better detail on how locations vs positions etc affect global space conversion? I would have never guessed how to solve this even though I knew about the local to global conversion from the docs. Thanks! -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. attachment: winmail.dat
RE: just not normal
Tell me, Gray - what is a 'true' vector? I've never heard of that term. ;-) As for the textbooks, I only recommend the Gerald Farin book for the same reason as you - the textbook I used in college was awful. Awful enough I purchased 5 different linear algebra textbooks to figure it all out as most come with the same 8 topics, but only explain 2 or 3 of them well, and rarely come with examples directly applicable to what we do here. The Farin book complements a traditional linear algebra course by illustrating the subset of concepts applicable to the case of working in 2D or 3D computer graphics. If you have a linear algebra background, you'll breeze through the book pretty fast. However for somebody getting their feet wet in the subject, it's really good for introducing concepts and guiding the reader on the right track for pursuit of further knowledge. Hindsight being 20/20, I would be more interested to learn the subject if I had the Farin book before my college textbook. The Farin book, by the way, is a reworking and simplification of his previous book whose name escapes me at the moment, but is based on linear algebra for CAD and CG co-written with Dianne Hansford. Matt From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Grahame Fuller Sent: Thursday, August 15, 2013 9:18 AM To: softimage@listproc.autodesk.com Subject: RE: just not normal Joey, ICE doesn't convert locations directly. It can display them as vectors for debugging purposes but under the hood they are really a triangle ID + barycentric coordinates. Or perhaps you meant true vectors? The list of attributes that ICE will convert to the self's reference frame is here: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/index.html?url=files/ICE_trees_GettingandSettingDatainICETrees.htm,topicNumber=d30e274098 (scroll down to Reference Frames, right before Setting Data). You can trust ICE to use the correct math, 3x3 or 4x4 matrices, depending on whether the attribute is a true vector or position, but if it's a custom attribute then it's up to you to know what it is and take the appropriate action. The book that Matt mentioned looks interesting as an intuitive, geometrical approach. For a more technically oriented book I'd recommend Shilov's Linear Algebra - when I was at uni the assigned textbook was awful but Shilov's just clicked with me. gray From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:52 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal It will differentiate how to handle orientation vectors differently from position vectors which is the solution to the problem you said you couldn't solve on your own. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:49 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal I'm certain that it would be very useful, but what I am more interested in is what ICE is pre-computing that changes what might be normal expectations such as the example provided with locations. With ICE, positions are converted to global using 4x4 matrices and locations are converted to global using 3x3 matrices. Will a linear algebra book be able to tell me that, in context to ICE? -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:39 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal The documentation you're searching for is a linear algebra textbook. I think you'll find the subject very useful and directly applicable to your work on many fronts. Practical Linear Algebra: A Geometry Toolbox by Gerald Farin is a decent starting point as it discusses the fundamentals in plain english, but it's intended to complement a linear algebra course, not replace it. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:23 PM To:
3Delight preferences error when starting SI
Hello, I installed a demo version of 3delight, tested then uninstalled it via addon manager, and everytime I open softimage I get the error: 3Delight preferences not found. The script log shows this: This plug-in is not installed: 3delight. So how to get rid of this error? Thanks.
Re: 3Delight preferences error when starting SI
Look in your User folder for a 3Delight preset. On 15/08/2013 2:09 PM, David Rivera wrote: Hello, I installed a demo version of 3delight, tested then uninstalled it via addon manager, and everytime I open softimage I get the error: 3Delight preferences not found. The script log shows this: This plug-in is not installed: 3delight. So how to get rid of this error? Thanks.
RE: just not normal
Gray, Thanks. The doc you provided is exactly what I was looking for. This is really useful, and explains quite a lot actually. Especially regarding tangents that I was attempting to extract from curve locations on the path constraint I was trying to make a while back. Never could understand why it failed sometimes and worked others. Now I think I have an idea. Now if I could just get curve location by percentage of curve lengthefficiently.life would be grand. Thanks again. -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Grahame Fuller Sent: Thursday, August 15, 2013 12:18 PM To: softimage@listproc.autodesk.com Subject: RE: just not normal Joey, ICE doesn't convert locations directly. It can display them as vectors for debugging purposes but under the hood they are really a triangle ID + barycentric coordinates. Or perhaps you meant true vectors? The list of attributes that ICE will convert to the self's reference frame is here: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/index.html?url=files/ICE_trees_GettingandSettingDatainICETrees.htm,topicNumber=d30e274098 (scroll down to Reference Frames, right before Setting Data). You can trust ICE to use the correct math, 3x3 or 4x4 matrices, depending on whether the attribute is a true vector or position, but if it's a custom attribute then it's up to you to know what it is and take the appropriate action. The book that Matt mentioned looks interesting as an intuitive, geometrical approach. For a more technically oriented book I'd recommend Shilov's Linear Algebra - when I was at uni the assigned textbook was awful but Shilov's just clicked with me. gray From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:52 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal It will differentiate how to handle orientation vectors differently from position vectors which is the solution to the problem you said you couldn't solve on your own. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:49 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal I'm certain that it would be very useful, but what I am more interested in is what ICE is pre-computing that changes what might be normal expectations such as the example provided with locations. With ICE, positions are converted to global using 4x4 matrices and locations are converted to global using 3x3 matrices. Will a linear algebra book be able to tell me that, in context to ICE? -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:39 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal The documentation you're searching for is a linear algebra textbook. I think you'll find the subject very useful and directly applicable to your work on many fronts. Practical Linear Algebra: A Geometry Toolbox by Gerald Farin is a decent starting point as it discusses the fundamentals in plain english, but it's intended to complement a linear algebra course, not replace it. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:23 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal WOW! What a difference two nodes make! I converted the 4x4 Matrix down to a 3x3 Matrix omitting Translation in the process, and plugged that into Multiply Vector by Matrix and...EVERYTHING WORKS! The flipping is gone. I had solved the problem by taking three points on the surface, converting to global position on each, then deriving a normal vector from them. It was rock solid
Re: just not normal
MIT Courseware Linear Agebra with videos http://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/ On Thu, Aug 15, 2013 at 1:51 PM, Matt Lind ml...@carbinestudios.com wrote: Tell me, Gray – what is a ‘true’ vector? I’ve never heard of that term. ;-) ** ** As for the textbooks, I only recommend the Gerald Farin book for the same reason as you – the textbook I used in college was awful. Awful enough I purchased 5 different linear algebra textbooks to figure it all out as most come with the same 8 topics, but only explain 2 or 3 of them well, and rarely come with examples directly applicable to what we do here. ** ** The Farin book complements a traditional linear algebra course by illustrating the subset of concepts applicable to the case of working in 2D or 3D computer graphics. If you have a linear algebra background, you’ll breeze through the book pretty fast. However for somebody getting their feet wet in the subject, it’s really good for introducing concepts and guiding the reader on the right track for pursuit of further knowledge. Hindsight being 20/20, I would be more interested to learn the subject if I had the Farin book before my college textbook. ** ** The Farin book, by the way, is a reworking and simplification of his previous book whose name escapes me at the moment, but is based on linear algebra for CAD and CG co-written with Dianne Hansford. ** ** ** ** Matt ** ** ** ** ** ** ** ** ** ** ** ** *From:* softimage-boun...@listproc.autodesk.com [mailto: softimage-boun...@listproc.autodesk.com] *On Behalf Of *Grahame Fuller *Sent:* Thursday, August 15, 2013 9:18 AM *To:* softimage@listproc.autodesk.com *Subject:* RE: just not normal ** ** Joey, ** ** ICE doesn’t convert locations directly. It can display them as vectors for debugging purposes but under the hood they are really a triangle ID + barycentric coordinates. Or perhaps you meant true vectors? ** ** The list of attributes that ICE will convert to the self’s reference frame is here: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/index.html?url=files/ICE_trees_GettingandSettingDatainICETrees.htm,topicNumber=d30e274098(scroll down to “Reference Frames”, right before “Setting Data”). You can trust ICE to use the correct math, 3x3 or 4x4 matrices, depending on whether the attribute is a true vector or position, but if it’s a custom attribute then it’s up to you to know what it is and take the appropriate action. ** ** The book that Matt mentioned looks interesting as an intuitive, geometrical approach. For a more technically oriented book I’d recommend Shilov’s “Linear Algebra” — when I was at uni the assigned textbook was awful but Shilov’s just clicked with me. ** ** gray ** ** ** ** *From:* softimage-boun...@listproc.autodesk.com [ mailto:softimage-boun...@listproc.autodesk.comsoftimage-boun...@listproc.autodesk.com] *On Behalf Of *Matt Lind *Sent:* Wednesday, August 14, 2013 7:52 PM *To:* softimage@listproc.autodesk.com *Subject:* RE: just not normal ** ** It will differentiate how to handle orientation vectors differently from position vectors which is the solution to the problem you said you couldn’t solve on your own. ** ** Matt ** ** ** ** ** ** *From:* softimage-boun...@listproc.autodesk.com [ mailto:softimage-boun...@listproc.autodesk.comsoftimage-boun...@listproc.autodesk.com] *On Behalf Of *Ponthieux, Joseph G. (LARC-E1A)[LITES] *Sent:* Wednesday, August 14, 2013 4:49 PM *To:* softimage@listproc.autodesk.com *Subject:* RE: just not normal ** ** I’m certain that it would be very useful, but what I am more interested in is what ICE is pre-computing that changes what might be normal expectations such as the example provided with locations. With ICE, positions are converted to global using 4x4 matrices and locations are converted to global using 3x3 matrices. Will a linear algebra book be able to tell me that, in context to ICE? ** ** -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. ** ** *From:* softimage-boun...@listproc.autodesk.com [ mailto:softimage-boun...@listproc.autodesk.comsoftimage-boun...@listproc.autodesk.com] *On Behalf Of *Matt Lind *Sent:* Wednesday, August 14, 2013 7:39 PM *To:* softimage@listproc.autodesk.com *Subject:* RE: just not normal ** ** The documentation you’re searching for is a linear algebra textbook. I think you’ll find the subject very useful and directly applicable to your work on many fronts. “Practical Linear Algebra: A Geometry Toolbox” by Gerald
Re: force triangles to quads
I figured..thanks. Yeah, a bit more optimization and a little manual cleanup..wasn't bad. Was more curious if there were other tools out there with a bit more control. Soft's is still the best from what I've seen though. Kris On Wed, Aug 14, 2013 at 6:11 PM, Ponthieux, Joseph G. (LARC-E1A)[LITES] j.ponthi...@nasa.gov wrote: Reducing 100 triangles to quads is the removal of only 50 edges. That doesn’t seem too painful to have complete control over how the quads are picked. If the triangles are very regular quadrangulate should work fine, but if they are irregular with extreme angles, I’d opt to do it by eye. Barring that have you tried Poly reduction with Quad preservation options? You can reduce on selected facets instead of the entire mesh. ** ** -- Joey Ponthieux LaRC Information Technology Enhanced Services (LITES) Mymic Technical Services NASA Langley Research Center __ Opinions stated here-in are strictly those of the author and do not represent the opinions of NASA or any other party. ** ** *From:* softimage-boun...@listproc.autodesk.com [mailto: softimage-boun...@listproc.autodesk.com] *On Behalf Of *Kris Rivel *Sent:* Wednesday, August 14, 2013 3:00 PM *To:* Softimage List *Subject:* force triangles to quads ** ** I have about 100 triangles left I'm trying to force into quads...nothing automatic with a bit more brute force than the built in quadrangulate is there? Thinking I can do it pretty quickly by hand but was just curious. Thanks. ** ** Kris
RE: just not normal
Matt, maybe it was the same textbook? :) I forget the author but as I recall it was a grey hardback with pinkish/purplish printing on the front. True vector I obviously not a technical term, but I find it's useful to distinguish things like force and velocity from the data type that's called a vector in ICE, but is really just a 3-tuple and might actually contain a position, or scaling factors, Euler angles, etc. In physics, you are taught that vectors have direction and magnitude but no position (which is why you can add them geometrically by moving them tip-to-tail). That makes them different from positions, in fact I have read that in some systems (MATLAB maybe?) positions and vectors are separate data types. gray From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Daniel Brassard Sent: Thursday, August 15, 2013 2:31 PM To: softimage@listproc.autodesk.com Subject: Re: just not normal MIT Courseware Linear Agebra with videos http://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/ On Thu, Aug 15, 2013 at 1:51 PM, Matt Lind ml...@carbinestudios.commailto:ml...@carbinestudios.com wrote: Tell me, Gray - what is a 'true' vector? I've never heard of that term. ;-) As for the textbooks, I only recommend the Gerald Farin book for the same reason as you - the textbook I used in college was awful. Awful enough I purchased 5 different linear algebra textbooks to figure it all out as most come with the same 8 topics, but only explain 2 or 3 of them well, and rarely come with examples directly applicable to what we do here. The Farin book complements a traditional linear algebra course by illustrating the subset of concepts applicable to the case of working in 2D or 3D computer graphics. If you have a linear algebra background, you'll breeze through the book pretty fast. However for somebody getting their feet wet in the subject, it's really good for introducing concepts and guiding the reader on the right track for pursuit of further knowledge. Hindsight being 20/20, I would be more interested to learn the subject if I had the Farin book before my college textbook. The Farin book, by the way, is a reworking and simplification of his previous book whose name escapes me at the moment, but is based on linear algebra for CAD and CG co-written with Dianne Hansford. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Grahame Fuller Sent: Thursday, August 15, 2013 9:18 AM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal Joey, ICE doesn't convert locations directly. It can display them as vectors for debugging purposes but under the hood they are really a triangle ID + barycentric coordinates. Or perhaps you meant true vectors? The list of attributes that ICE will convert to the self's reference frame is here: http://download.autodesk.com/global/docs/softimage2014/en_us/userguide/index.html?url=files/ICE_trees_GettingandSettingDatainICETrees.htm,topicNumber=d30e274098 (scroll down to Reference Frames, right before Setting Data). You can trust ICE to use the correct math, 3x3 or 4x4 matrices, depending on whether the attribute is a true vector or position, but if it's a custom attribute then it's up to you to know what it is and take the appropriate action. The book that Matt mentioned looks interesting as an intuitive, geometrical approach. For a more technically oriented book I'd recommend Shilov's Linear Algebra - when I was at uni the assigned textbook was awful but Shilov's just clicked with me. gray From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Matt Lind Sent: Wednesday, August 14, 2013 7:52 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal It will differentiate how to handle orientation vectors differently from position vectors which is the solution to the problem you said you couldn't solve on your own. Matt From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Ponthieux, Joseph G. (LARC-E1A)[LITES] Sent: Wednesday, August 14, 2013 4:49 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: RE: just not normal I'm certain that it would be very useful, but what I am more interested in is what ICE is pre-computing that changes what might be normal expectations such as the example provided with locations. With ICE, positions are converted to global using 4x4 matrices and locations are converted to global using 3x3 matrices. Will a linear algebra book be able to tell me
Re: Latest work from Whiskytree -- Elysium
absolutely smashing work – all of it. And the movie is quite good as well – best scifi movie of the year so far – 2013 is shaping up to be a big scifi year. It’s so cool that you guys got to do all the Elysium interiors – its very high profile work. Knowing the interior and exterior was two different studios I tried to spot something odd between them – nothing as far as I could tell. Flawless execution. Oh, there was that one tree that was a bit off... nah just kidding. From: Eric Lampi Sent: Wednesday, August 14, 2013 2:54 PM To: softimage@listproc.autodesk.com Subject: Re: Latest work from Whiskytree -- Elysium I saw this the other night in IMAX, excellent work! Eric Freelance 3D and VFX animator http://vimeopro.com/user7979713/3d-work On Wed, Aug 14, 2013 at 2:46 AM, Vincent Fortin vfor...@gmail.com wrote: Studios sharing the same directory structure... I like it :-) Great work guys! I can't wait to watch it on big screen. On Wed, Aug 14, 2013 at 12:58 AM, Chris Chia chris.c...@autodesk.com wrote: Nice Work Whiskytree! If you have a publicity video with Softimage involved, do let us know... Need to show to A marketing ;) On 14 Aug, 2013, at 5:12 AM, Votch megavo...@gmail.commailto:megavo...@gmail.com wrote: Now that Elysium is out I can mention the project publicly! Here is an article on some of the work we did for Elysium. http://library.creativecow.net/kaufman_debra/VFX_Elysium-Whiskytree/1 When I was a kid I wanted to work in VFX so that I could build space ships and work on SCI-FI films. Elysium is my first SCI-FI project and personally it was totally worth the wait. Votch Levi Whiskytree
Re: just not normal
Yes, a linear algebra book will tell you what you need to know in the context of ICE to KNOW that. Positions converted with 4x4 and locations with 3x3 is scarily incorrect and highly coincidental. I really, really do recommend some fundamentals of linear algebra if you're getting deeper into ICE. I never read the ICE documentation personally. I never needed to, and it's not its job to cover the basics of matrix maths to be honest. Vince's Mathematics for computer graphics is a great, cheap, approachable and small footprint intro to many bits you will find useful. On Thu, Aug 15, 2013 at 9:48 AM, Ponthieux, Joseph G. (LARC-E1A)[LITES] j.ponthi...@nasa.gov wrote: I’m certain that it would be very useful, but what I am more interested in is what ICE is pre-computing that changes what might be normal expectations such as the example provided with locations. With ICE, positions are converted to global using 4x4 matrices and locations are converted to global using 3x3 matrices. Will a linear algebra book be able to tell me that, in context to ICE? **
Strand length on the rendertree
Hi guys, is it possible to access the absolute strand length value (in SI units or whatever) on the rendertree ? I'm trying to gradient shade a hair, and I need strands to pick a value from the gradient based on their actual length (strand with length=1 goes from black to white, strand with length=0.5 goes from black to grey) Not using ICE, so I have to calculate at render time. thanks
RE: just not normal
I remember reading the Shilov books at the bookstore for evaluation. I found the terminology a little technically heavy making it a challenging read as I didn't have the technical background at the time. Because of the lack of illustrations you really must have it all contained in your head as you progress through the book or else you can get lost. I'd be more inclined to check that book out now vs. when first getting exposed to the subject. My first linear algebra textbook was linear algebra with applications, by Otto Bretscher (3rd edition). It started OK, but after the first few chapters it ran afoul of any sense or structure. The exercises and problems were ridiculously hard and abstract in comparison to the material presented in the chapter. It was fun to be challenged mentally, but this book went too far as it felt like a mystery novel where the key piece of evidence wasn't introduced until the end after the case was solved. Even the teacher dumped the book half way through the semester. Out of frustration I bought Linear algebra by Howard Anton (7th edition) because he authored the school's calculus books and at least made some sense, but his linear algebra book was all number crunching and lacked theory. Disappointed again I tried Kohlman-Hill because it had advertised material for computer science majors, but it turned out to be fluff. There were also a few others in the mix I can no longer remember. I did well in school, but I didn't have much fun with linear algebra mostly because there was a void between theory and practice. Theory was just that, and the books covering the practice often used terms and techniques not found in the theory books, or required significant computer science background to make use. That made it difficult to jump in. When I picked up the Gerald Farin book at Siggraph 2006, I felt like I found the bridge to connect the two worlds. The examples aren't as deep as a traditional textbook, but are very intuitive and directly applicable to 2D and 3D graphics. The main benefit of the book is it explains concepts of linear algebra in the context of computer graphics in a way that doesn't require a computer science background. My only complaint is the book can be a little thin in some areas covering specific use cases and not mention important edge cases to look out for. Then again I have the 1st edition of the book, perhaps the 3rd edition fills those holes. Matt From: softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Grahame Fuller Sent: Thursday, August 15, 2013 12:57 PM To: softimage@listproc.autodesk.com Subject: RE: just not normal Matt, maybe it was the same textbook? :) I forget the author but as I recall it was a grey hardback with pinkish/purplish printing on the front. True vector I obviously not a technical term, but I find it's useful to distinguish things like force and velocity from the data type that's called a vector in ICE, but is really just a 3-tuple and might actually contain a position, or scaling factors, Euler angles, etc. In physics, you are taught that vectors have direction and magnitude but no position (which is why you can add them geometrically by moving them tip-to-tail). That makes them different from positions, in fact I have read that in some systems (MATLAB maybe?) positions and vectors are separate data types. gray From: softimage-boun...@listproc.autodesk.commailto:softimage-boun...@listproc.autodesk.com [mailto:softimage-boun...@listproc.autodesk.com] On Behalf Of Daniel Brassard Sent: Thursday, August 15, 2013 2:31 PM To: softimage@listproc.autodesk.commailto:softimage@listproc.autodesk.com Subject: Re: just not normal MIT Courseware Linear Agebra with videos http://ocw.mit.edu/courses/mathematics/18-06-linear-algebra-spring-2010/ On Thu, Aug 15, 2013 at 1:51 PM, Matt Lind ml...@carbinestudios.commailto:ml...@carbinestudios.com wrote: Tell me, Gray - what is a 'true' vector? I've never heard of that term. ;-) As for the textbooks, I only recommend the Gerald Farin book for the same reason as you - the textbook I used in college was awful. Awful enough I purchased 5 different linear algebra textbooks to figure it all out as most come with the same 8 topics, but only explain 2 or 3 of them well, and rarely come with examples directly applicable to what we do here. The Farin book complements a traditional linear algebra course by illustrating the subset of concepts applicable to the case of working in 2D or 3D computer graphics. If you have a linear algebra background, you'll breeze through the book pretty fast. However for somebody getting their feet wet in the subject, it's really good for introducing concepts and guiding the reader on the right track for pursuit of further knowledge. Hindsight being 20/20, I would be more interested to learn the subject if I had the Farin book before my college
Re: Strand length on the rendertree
How are you using strands if you're not using ICE? What do you mean? Couldn't you just set a custom attribute with the data and read it with an AttributeScalar node? On Thu, Aug 15, 2013 at 6:20 PM, Fabricio Chamon xsiml...@gmail.com wrote: Hi guys, is it possible to access the absolute strand length value (in SI units or whatever) on the rendertree ? I'm trying to gradient shade a hair, and I need strands to pick a value from the gradient based on their actual length (strand with length=1 goes from black to white, strand with length=0.5 goes from black to grey) Not using ICE, so I have to calculate at render time. thanks
Softimage 2015 User Survey
Hi guys, We need some inputs from everyone. Please fill up the survey below: https://customer.voice.autodesk.com/se.ashx?s=077012DC304DCD63 The reason for this survey is to access the impact of dropping official support for Fedora 14. If we do drop support, we intend to continue running automated sanity checks on Fedora 14 for a while longer. The officially supported Linux distributions for 2015 is expected to be RedHat/CentOS 6.2. Please do so by the end of August. Thanks. Regards, The Softimage Team attachment: winmail.dat
Re: Strand length on the rendertree
Hey, I think you'll need ICE to do this. Here is an image of a setup which should accomplish what you are after: https://leonard-koch.squarespace.com/s/StrandLengthInRenderTree.jpg
Re: Strand length on the rendertree
Looks like the moderator approved it... twice. On Thu, Aug 15, 2013 at 11:07 PM, Leonard Koch leonardkoch...@gmail.comwrote: Hey, I think you'll need ICE to do this. Here is an image of a setup which should accomplish what you are after: https://leonard-koch.squarespace.com/s/StrandLengthInRenderTree.jpg
RE: Softimage 2015 User Survey
Hi Chris Very happy to see this survey (completed) The linux installer for Softimage needs a lot of polish. ;) When you guys get to it would it be possible to allow an Ubuntu / Linux Mint version as well. I know you cant specifically target all distributions, but at least allowing an easy install via rpms or deb would be a big step forward. Also if it could be robust enough that you don't need to spend days trying to get your .so file and other celestial entities to align so that it will actually work within a decent timeframe. Kind regards Angus From: Chris Chia [chris.c...@autodesk.com] Sent: 16 August 2013 04:51 AM To: softimage@listproc.autodesk.com Subject: Softimage 2015 User Survey Hi guys, We need some inputs from everyone. Please fill up the survey below: https://customer.voice.autodesk.com/se.ashx?s=077012DC304DCD63 The reason for this survey is to access the impact of dropping official support for Fedora 14. If we do drop support, we intend to continue running automated sanity checks on Fedora 14 for a while longer. The officially supported Linux distributions for 2015 is expected to be RedHat/CentOS 6.2. Please do so by the end of August. Thanks. Regards, The Softimage Team table width=100% border=0 cellspacing=0 cellpadding=0 style=width:100%; tr td align=left style=text-align:justify;font face=arial,sans-serif size=1 color=#99span style=font-size:11px;This communication is intended for the addressee only. It is confidential. If you have received this communication in error, please notify us immediately and destroy the original message. You may not copy or disseminate this communication without the permission of the University. Only authorised signatories are competent to enter into agreements on behalf of the University and recipients are thus advised that the content of this message may not be legally binding on the University and may contain the personal views and opinions of the author, which are not necessarily the views and opinions of The University of the Witwatersrand, Johannesburg. All agreements between the University and outsiders are subject to South African Law unless the University agrees in writing to the contrary. /span/font/td /tr /table
