Thanks On Sun, Feb 12, 2012 at 9:00 PM, Kim Bale <kcb...@googlemail.com> wrote:
> Width x length x (Height of surface - height of seabed) > here width = window_width length = window_length height of seabed = how much it has raised(current height + 1.0) height of surface ? how to calculate the height of surface? > > K. > > > > > On 12 February 2012 15:17, Mohammed Rashad <mohammedrasha...@gmail.com>wrote: > >> >> >> On Sun, Feb 12, 2012 at 8:42 PM, Kim Bale <kcb...@googlemail.com> wrote: >> >>> It depends how accurate you want your calculation to be. >>> >>> An approximation would be to simply take the volume of the cuboid that >>> forms between the seabed and the ocean surface. >>> >> how to get the cuboid that forms between seabed and oceansurface. Any >> pseudo code or something >> >>> >>> If you want a more accurate volume calculation then you'd have to take >>> into account the shape of the waves and the seabed. >>> I *think* one of the properties of the FFT ocean surface is that the >>> average height will always be zero so you can treat it like a flat plane in >>> your volume calculation. You might want to check that though it's been a >>> while since I've looked at it in detail. If that's the case you only need >>> to take into account the shape of the sea bed in your calculation. It is >>> possible, but you'll have to work out the maths for that. >>> >>> Regards, >>> >>> Kim. >>> >>> >>> On 12 February 2012 14:15, Mohammed Rashad >>> <mohammedrasha...@gmail.com>wrote: >>> >>>> thanks Kim. >>>> >>>> OK. after translate will it update window automatically >>>> what I want is partly done with osgOcean >>>> >>>> after increasing height I need to find the area that is under water. Is >>>> it possible is a big question but I have only one question >>>> Is it possile? and how >>>> >>>> >>>> On Sun, Feb 12, 2012 at 7:42 PM, Kim Bale <kcb...@googlemail.com>wrote: >>>> >>>>> Hi Rashad, >>>>> >>>>> All setOceanSurfaceHeight does is set the matrix of the transform that >>>>> parents the ocean surface so that it translates the surface up or down. >>>>> >>>>> Take a look here: >>>>> >>>>> >>>>> http://code.google.com/p/osgocean/source/browse/trunk/include/osgOcean/OceanScene#224 >>>>> >>>>> It also dirties the scene asking for a rebuild on the next update >>>>> traversal. >>>>> >>>>> Regards, >>>>> >>>>> Kim. >>>>> >>>>> On 12 February 2012 14:01, Mohammed Rashad <mohammedrasha...@gmail.com >>>>> > wrote: >>>>> >>>>>> >>>>>> if (ea.getKey() == '+') >>>>>> { >>>>>> >>>>>> _oceanScene->setOceanSurfaceHeight(_oceanScene->getOceanSurfaceHeight() + >>>>>> 1.0); >>>>>> osg::notify(osg::NOTICE) << "Ocean surface is now at >>>>>> z = " << _oceanScene->getOceanSurfaceHeight() << std::endl; >>>>>> return true; >>>>>> } >>>>>> if (ea.getKey() == '-') >>>>>> { >>>>>> >>>>>> _oceanScene->setOceanSurfaceHeight(_oceanScene->getOceanSurfaceHeight() - >>>>>> 1.0); >>>>>> osg::notify(osg::NOTICE) << "Ocean surface is now at >>>>>> z = " << _oceanScene->getOceanSurfaceHeight() << std::endl; >>>>>> return true; >>>>>> } >>>>>> } >>>>>> If I press "+" water level is increased and for "-" water level is >>>>>> decreased >>>>>> the above code I had written is just setting ocean surface height. >>>>>> now I need to know which function is called after setting height >>>>>> using >>>>>> _oceanScene->setOceanSurfaceHeight(_oceanScene->getOceanSurfaceHeight() + >>>>>> 1.0); >>>>>> what the osgOCean does to render the ocean with increased or >>>>>> decreased water level >>>>>> >>>>>> i tried gdb but cant trace what is happening.. >>>>>> I think some event is triggered after setting OceanSurfaceHeight but >>>>>> dont know where or how >>>>>> >>>>>> I hope the developers of osgOcean are viewing this mail and they will >>>>>> answer my question. >>>>>> >>>>>> Any pointers are greatly appreciated. >>>>>> >>>>>> Thanks in advance >>>>>> >>>>>> -- >>>>>> Regards, >>>>>> Rashad >>>>>> >>>>>> >>>>>> _______________________________________________ >>>>>> osg-users mailing list >>>>>> osg-users@lists.openscenegraph.org >>>>>> >>>>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> osg-users mailing list >>>>> osg-users@lists.openscenegraph.org >>>>> >>>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>>> >>>>> >>>> >>>> >>>> -- >>>> Regards, >>>> Rashad >>>> >>>> >>>> _______________________________________________ >>>> osg-users mailing list >>>> osg-users@lists.openscenegraph.org >>>> >>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>> >>>> >>> >>> _______________________________________________ >>> osg-users mailing list >>> osg-users@lists.openscenegraph.org >>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>> >>> >> >> >> -- >> Regards, >> Rashad >> >> >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> >> > > _______________________________________________ > osg-users mailing list > osg-users@lists.openscenegraph.org > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > > -- Regards, Rashad
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