From: ximengzhu <xim...@gm...> - 2009-05-19 15:57:34
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Dear all, my question is the one of the title of the thread. For my purpose I need to use the real time equal to the simulation time. This means I need to set at one the multiplier of the real time. Anyone knows how to? Thanks in advance, Ximengzhu -- View this message in context: http://www.nabble.com/how-to-set-real-time-equal-to-simulation-time--tp23619214p23619214.html Sent from the playerstage-gazebo mailing list archive at Nabble.com. |
From: Piotr T. <pio...@gm...> - 2009-05-22 22:45:12
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You can take a loot at this patch, it works for me. https://sourceforge.net/tracker/?func=detail&atid=433166&aid=2720818&group_id=42445 On Tue, May 19, 2009 at 17:57, ximengzhu <xim...@gm...> wrote: > > Dear all, > my question is the one of the title of the thread. > For my purpose I need to use the real time equal to the simulation time. > This means I need to set at one the multiplier of the real time. > Anyone knows how to? > Thanks in advance, > Ximengzhu > -- > View this message in context: > http://www.nabble.com/how-to-set-real-time-equal-to-simulation-time--tp23619214p23619214.html > Sent from the playerstage-gazebo mailing list archive at Nabble.com. > > > > ------------------------------------------------------------------------------ > Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT > is a gathering of tech-side developers & brand creativity professionals. > Meet > the minds behind Google Creative Lab, Visual Complexity, Processing, & > iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian > Group, R/GA, & Big Spaceship. http://www.creativitycat.com > _______________________________________________ > Playerstage-gazebo mailing list > Pla...@li... > https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo > -- Piotr Trojanek |
From: Cestmir H. <cze...@gm...> - 2009-05-26 13:17:57
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Hi, I faced the same problem a while ago and nobody seemed to answer me. What did it for me was uncommenting part of the source code in server/Simulator.cc - namely in the Simulator::MainLoop() function. I didn't look at the current source code though, so take this advice as a mere hint. Regards, Cestmir "CZestmyr" Houska On Tue, May 19, 2009 at 5:57 PM, ximengzhu <xim...@gm...> wrote: > > Dear all, > my question is the one of the title of the thread. > For my purpose I need to use the real time equal to the simulation time. > This means I need to set at one the multiplier of the real time. > Anyone knows how to? > Thanks in advance, > Ximengzhu > -- > View this message in context: > http://www.nabble.com/how-to-set-real-time-equal-to-simulation-time--tp23619214p23619214.html > Sent from the playerstage-gazebo mailing list archive at Nabble.com. > > > > ------------------------------------------------------------------------------ > Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT > is a gathering of tech-side developers & brand creativity professionals. > Meet > the minds behind Google Creative Lab, Visual Complexity, Processing, & > iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian > Group, R/GA, & Big Spaceship. http://www.creativitycat.com > _______________________________________________ > Playerstage-gazebo mailing list > Pla...@li... > https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo > |
From: Nate K. <nat...@gm...> - 2009-06-02 21:00:48
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Hello, The latest SVN version of gazebo now lets to control the physics update loop. Use the follow tags: <physics:ode> <updateRate> # </updateRate> </physics:ode> The number you set updateRate to follows these rules: < 0 : Gazebo will attempt to run the simulation in real time 0 : Gazebo will run as fast as it can > 0: This number will represent the desired physics update frequency. -nate On Tue, May 26, 2009 at 6:17 AM, Cestmir Houska <cze...@gm...> wrote: > Hi, > > I faced the same problem a while ago and nobody seemed to answer me. What > did it for me was uncommenting part of the source code in > server/Simulator.cc - namely in the Simulator::MainLoop() function. I didn't > look at the current source code though, so take this advice as a mere hint. > > Regards, > > Cestmir "CZestmyr" Houska > > On Tue, May 19, 2009 at 5:57 PM, ximengzhu <xim...@gm...> wrote: > >> >> Dear all, >> my question is the one of the title of the thread. >> For my purpose I need to use the real time equal to the simulation time. >> This means I need to set at one the multiplier of the real time. >> Anyone knows how to? >> Thanks in advance, >> Ximengzhu >> -- >> View this message in context: >> http://www.nabble.com/how-to-set-real-time-equal-to-simulation-time--tp23619214p23619214.html >> Sent from the playerstage-gazebo mailing list archive at Nabble.com. >> >> >> >> ------------------------------------------------------------------------------ >> Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT >> is a gathering of tech-side developers & brand creativity professionals. >> Meet >> the minds behind Google Creative Lab, Visual Complexity, Processing, & >> iPhoneDevCamp asthey present alongside digital heavyweights like Barbarian >> Group, R/GA, & Big Spaceship. http://www.creativitycat.com >> _______________________________________________ >> Playerstage-gazebo mailing list >> Pla...@li... >> https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo >> > ------------------------------------------------------------------------------ > OpenSolaris 2009.06 is a cutting edge operating system for enterprises > looking to deploy the next generation of Solaris that includes the latest > innovations from Sun and the OpenSource community. Download a copy and > enjoy capabilities such as Networking, Storage and Virtualization. > Go to: http://p.sf.net/sfu/opensolaris-get > _______________________________________________ > Playerstage-gazebo mailing list > Pla...@li... > https://lists.sourceforge.net/lists/listinfo/playerstage-gazebo > |
From: Yang S. <ys...@ec...> - 2009-06-05 13:23:36
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Hi Bro, See this thread please: http://www.nabble.com/simulation-vs-real-time-td19772617.html#a22696684 I use Gazebo SVN version, and do a little change in file server/Simulator.cc based on the solution provided in above thread: > *in Simulator.cc, function MainLoop() * > //declare 2 variables at the beginning > bool syncTime = false; > double cache = 0; > .. > //and replace the following line in the while loop > > World::Instance()->Update(); > > //with > > *step *= World::Instance()->GetPhysicsEngine()->GetStepTime(); > //resets the step amount > if ( !syncTime){ > this->startTime = this->GetWallTime() - simTime; // init real > time to be the same as sim time > syncTime = true; > } > double elapsed = this->GetRealTime() - this->simTime; > cache += elapsed; > // steps the ODE by time elapsed in real world since last update using > fixed time step > while(cache >= step) > { > World::Instance()->Update(); > cache -= *step*; > } > *step *= elapsed - cache; // changes step amount so simTime gets > incremented correctly and recompile the gazebo package. It really works! Remember to backup your original gazebo directory before you modify the source codes. Good Luck yang ximengzhu wrote: > Dear all, > my question is the one of the title of the thread. > For my purpose I need to use the real time equal to the simulation time. > This means I need to set at one the multiplier of the real time. > Anyone knows how to? > Thanks in advance, > Ximengzhu > |