Hi Mohammed, There's nothing particularly unique about the islands in osgOcean, they're a model like any other.
You will need to set the nodemask on any model you include under OceanScene though to ensure they are included in the various effects. E.g. http://code.google.com/p/osgocean/source/browse/trunk/src/oceanExample/Scene.cpp#230 The example application in the osgocean source should give you an idea of how to combine your own models with osgOcean. Regards, Kim. On 9 February 2012 14:31, Mohammed Rashad <[email protected]>wrote: > i can visualize islands on osgocean > this is exactly what i want > but cant visualize my own islands > how to generate islands for fitting in osgOcean > or how to chnage osgOcean to fit my own dem generated using osgdem which > is an ive file > > On Thu, Feb 9, 2012 at 5:59 PM, Mohammed Rashad < > [email protected]> wrote: > >> fixed the issue by skipping setlocale VTBuilder/App.cpp 80 >> >> >> On Thu, Feb 9, 2012 at 5:45 PM, Sergey Kurdakov >> <[email protected]>wrote: >> >>> Hi >>> >>> I would suggest, that you compile http://code.google.com/p/vtp/ there >>> you will see, how to >>> lay roads ( they are similar to rivers, just consist of straight >>> segments, and rivers from curved segments), >>> >>> if you use http://qt.nokia.com/products/developer-tools/ you would be >>> able to visually set breakpoints >>> and see, how roads are laid onto terrain. >>> >>> also - the project http://osgearth.org/ has code to combine different >>> layers. >>> >>> the other one which might be of interest is >>> http://www.osgvisual.org/projects/osgvisual/ >>> >>> so it is only by debugging someones code you would get idea, >>> >>> there is also FlightGear simulator which is built using osg - it also >>> has rivers etc. You may ask where rivers are laid in code in FlightGear dev >>> list.. >>> >>> you may also take a look at delta3d http://www.delta3d.org >>> though old, this page seems appropriate >>> http://www.delta3d.org/article.php?story=20051013142113452 >>> >>> it is not that easy, still, from my experience - looking for familiar >>> words like road in code it is possible to set breakpoint or watchpoint ( >>> that the variable changed somewhere ) and then figure out what happens. >>> >>> Also I would suggest to search for osg books ( they are available on the >>> internet in pdf format ) from that books you would get a strong foundation >>> to move forward. >>> >>> Best regards >>> Sergey >>> >>> >>> On Thu, Feb 9, 2012 at 3:27 PM, Mohammed Rashad < >>> [email protected]> wrote: >>> >>>> Thanks Sergery. But I am a newbie to this OSG,OpenGL and 3D. But I am >>>> going to do my phd related to virtual reality which I think will help to >>>> contribute to OSG and entire community because I am on the open source >>>> coding part. I do C++ well. >>>> >>>> So If you have some free time with you. can you tell me a detailed step >>>> for visualizing water over dem. >>>> >>>> The mail you posted before may be a detailed step but not for a >>>> beginner like me. >>>> >>>> Thanks in advance >>>> >>>> On Thu, Feb 9, 2012 at 4:23 AM, Sergey Kurdakov <[email protected] >>>> > wrote: >>>> >>>>> Hi Rashad, >>>>> >>>>> in case you did not get reply from osgRiver author - few spare >>>>> thoughts ( do not expect too much, just some ideas), >>>>> >>>>> I think, that the approach to render rivers over dem is many step >>>>> task. >>>>> >>>>> 1) st you decide where river would be in 2D >>>>> 2) nd compute intersections along river boundaries ( with some >>>>> interval step ), and compute heigh of >>>>> river ( river would be represented as a set of patches ) if it >>>>> approximates those points ( the rivers could change it's height see code >>>>> and first pdf I sent ) >>>>> >>>>> 3) if the error between terrain and river is big you should re >>>>> tesselate the whole thing with new points >>>>> >>>>> basically you should change you dem so that river was below highest >>>>> points along the 2D path ( when seen from above). >>>>> >>>>> how to re tesselate? >>>>> >>>>> I think, that it is possible to use http://gts.sourceforge.net/though >>>>> tessellating square grid is trivial, then >>>>> you can move internal points to height which are better suite your >>>>> needs. >>>>> then you can join your more tesselated patches with whole dem as >>>>> described in >>>>> http://hal.inria.fr/docs/00/41/62/21/PDF/eusipco09_3_1.pdf >>>>> >>>>> if still it gives too much error you might then develop a custom >>>>> terrain using >>>>> http://tetgen.berlios.de/ ( >>>>> http://tetgen.berlios.de/features.html#F3 ) >>>>> >>>>> so that you place a lot of pixels on your terrain ( you might heigh >>>>> test for heights between dem grid ) >>>>> and also put desired height for river, then run tetgen over it to get >>>>> new mesh, with this mesh placing river would be just rendering river >>>>> patches after mesh is rendered. >>>>> >>>>> >>>>> you might try to search for some code which performs similar >>>>> operations ( maybe http://geodynamics.org/ ?) >>>>> >>>>> >>>>> also take a look at http://code.google.com/p/vtp/ it is virtual >>>>> terrain project, based on OpenSceneGraph, >>>>> it should have some utilities to work with DEM. >>>>> >>>>> also see >>>>> http://www.ruraltech.org/pubs/theses/mouton/mouton_ms_thesis.pdf >>>>> http://www.geocarto.com.hk/cgi-bin/pages1/mar06/3_Maathuis.pdf >>>>> >>>>> >>>>> >>>>> Best regards >>>>> Sergey >>>>> >>>>> >>>>> On Tue, Feb 7, 2012 at 5:56 PM, Mohammed Rashad < >>>>> [email protected]> wrote: >>>>> >>>>>> thanks. will put a mail to him >>>>>> >>>>>> >>>>>> On Tue, Feb 7, 2012 at 7:19 PM, Sergey Kurdakov < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> Hi >>>>>>> >>>>>>> try to contact initial author >>>>>>> >>>>>>> Quintijn Hendrickx [email protected] >>>>>>> >>>>>>> not sure is he still available by this address, but I just sent you >>>>>>> code ( and know it was applied to terrains ) >>>>>>> but cannot assist with anything else. >>>>>>> >>>>>>> Regards >>>>>>> Sergey >>>>>>> >>>>>>> >>>>>>> On Tue, Feb 7, 2012 at 5:42 PM, Mohammed Rashad < >>>>>>> [email protected]> wrote: >>>>>>> >>>>>>>> i had done creating cmake for osgRiver with some fixes for linux. >>>>>>>> i need to know how to run osgRiver on terrain data >>>>>>>> >>>>>>>> >>>>>>>> On Sat, Feb 4, 2012 at 3:02 PM, Sergey Kurdakov < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Hi >>>>>>>>> >>>>>>>>> cmake files were absent from initial download, >>>>>>>>> but I think you could take osgOcean cmake files and edit them to >>>>>>>>> fit osgRiver. >>>>>>>>> >>>>>>>>> Regards >>>>>>>>> Sergey >>>>>>>>> >>>>>>>>> >>>>>>>>> On Sat, Feb 4, 2012 at 10:12 AM, Mohammed Rashad < >>>>>>>>> [email protected]> wrote: >>>>>>>>> >>>>>>>>>> do you have some cmake files . I am using ubuntu linux >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> On Fri, Feb 3, 2012 at 7:43 PM, Mohammed Rashad < >>>>>>>>>> [email protected]> wrote: >>>>>>>>>> >>>>>>>>>>> thanks indeed Sergery. Will defenitely look into it and get back >>>>>>>>>>> to you. >>>>>>>>>>> >>>>>>>>>>> Thanks again >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> On Fri, Feb 3, 2012 at 7:32 PM, Sergey Kurdakov < >>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>> >>>>>>>>>>>> final part 3 of osgRiver >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> On Fri, Feb 3, 2012 at 6:02 PM, Sergey Kurdakov < >>>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>>> >>>>>>>>>>>>> part 2 of osgRiver >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> On Fri, Feb 3, 2012 at 6:01 PM, Sergey Kurdakov < >>>>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>>>> >>>>>>>>>>>>>> Hi, >>>>>>>>>>>>>> >>>>>>>>>>>>>> see my reply in mailing list, >>>>>>>>>>>>>> next three messages will be with attachment of osgRiver >>>>>>>>>>>>>> compressed with 7z ( free archiver - take it on the net if you >>>>>>>>>>>>>> don't) >>>>>>>>>>>>>> >>>>>>>>>>>>>> Regards >>>>>>>>>>>>>> Sergey >>>>>>>>>>>>>> >>>>>>>>>>>>>> On Fri, Feb 3, 2012 at 3:32 PM, Mohammed Rashad < >>>>>>>>>>>>>> [email protected]> wrote: >>>>>>>>>>>>>> >>>>>>>>>>>>>>> All, >>>>>>>>>>>>>>> I know my question doesnt have a single line answer. >>>>>>>>>>>>>>> But it will be great if somone provides some info or sparks >>>>>>>>>>>>>>> for starting >>>>>>>>>>>>>>> I have an SRTM data. I created deom using osgdem >>>>>>>>>>>>>>> and i got a srtm_12.ive file which I visualized using >>>>>>>>>>>>>>> osgviewer and is fine >>>>>>>>>>>>>>> Now I want to show that >>>>>>>>>>>>>>> How a water flow occurs in DEM >>>>>>>>>>>>>>> or srtm_12.ive data >>>>>>>>>>>>>>> dem contains some valleys and hills so i need to find a way >>>>>>>>>>>>>>> in OSG to display water get accumulated on terrain valleys(no >>>>>>>>>>>>>>> realtime >>>>>>>>>>>>>>> rendering). >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> For a given altitude I need to show the coast of dem which >>>>>>>>>>>>>>> is filled with water >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>> Regards, >>>>>>>>>>>>>>> Rashad >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> _______________________________________________ >>>>>>>>>>>>>>> osg-users mailing list >>>>>>>>>>>>>>> [email protected] >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> Regards, >>>>>>>>>>> Rashad >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> Regards, >>>>>>>>>> Rashad >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -- >>>>>>>> Regards, >>>>>>>> Rashad >>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Regards, >>>>>> Rashad >>>>>> >>>>>> >>>>> >>>> >>>> >>>> -- >>>> Regards, >>>> Rashad >>>> >>>> >>> >> >> >> -- >> Regards, >> Rashad >> >> > > > -- > Regards, > Rashad > > > _______________________________________________ > osg-users mailing list > [email protected] > http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org > >
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