Re: [osg-users] [osgOcean] increase ocean view range
are you worked it out? amigoface wrote: yes from the osgapp example Code: _oceanSurface = new osgOcean::FFTOceanSurface( 64, 256, 17, windDirection, windSpeed, depth, reflectionDamping, waveScale, isChoppy, choppyFactor, 10.f, 256 ); i tried before to increase some of these value but i got a very strange and horrible effect since i don't know each parameter value correspondence for example i tried this before Code: _oceanSurface = new osgOcean::FFTOceanSurface( 128, 512, 33, windDirection, windSpeed, depth, reflectionDamping, waveScale, isChoppy, choppyFactor, 10.f, 256 ); i can't put screens now beacause i don't have my dev machine -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33751#33751 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
If you modify the third parameter of FFTOceanSurface which is called numTiles you will be able to increase the number of tiles that make up the ocean surface and thus the range. Increasing the number of tiles will have a direct effect on performance. You may wish to try the new vbo technique in the trunk to reduce update times. Regards, Kim Sent from my iPhone On 15 Nov 2010, at 16:16, Shen Qing fl...@yahoo.cn wrote: are you worked it out? amigoface wrote: yes from the osgapp example Code: _oceanSurface = new osgOcean::FFTOceanSurface( 64, 256, 17, windDirection, windSpeed, depth, reflectionDamping, waveScale, isChoppy, choppyFactor, 10.f, 256 ); i tried before to increase some of these value but i got a very strange and horrible effect since i don't know each parameter value correspondence for example i tried this before Code: _oceanSurface = new osgOcean::FFTOceanSurface( 128, 512, 33, windDirection, windSpeed, depth, reflectionDamping, waveScale, isChoppy, choppyFactor, 10.f, 256 ); i can't put screens now beacause i don't have my dev machine -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=33751#33751 ___ 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
Re: [osg-users] [osgOcean] increase ocean view range
can you explain more in details this please ? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31188#31188 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
LOD - Level Of Detail. Obviously when you build a terrain database, you build it in few different level of details. What is close is more detailed what is further is less detailed. All of the terrain generation tools are aware of this and they build the final scene graph using LODs. They often build it as quad tree structure. So what you would need is, different representation of the ocean that will change based on the range. And that is done with LOD node. So your ocean can be polygonal for far range, and a hole for closer range (the hole will become your osgocean) The terrain tools like TerraVista, can do this easy. When you build your database, you would have vector culture (ESRI shape. etc) for your ocean. And you specify how this culture will be represented in your final terrain database. So you make it polygonal for lower LODs and a hole for the highest LOD. Then you set the range of your osgocean to be the same as your highest LOD range That is how I build the bosphores database with TerraVista. I am not very familiar with vpb (well, I used it couple of times to generate the whole earth with the blue marble dataset). You would need to see if vpb can work with vector culture. Or go with some commercial tolls, TerraVista, TerraSim ... etc. There are some contractors as well you can outsource the terrain generation to them. Maybe you explain what is your final database (also, what kind of sources you have) and we see if we can give better guidance. I expect some of the rest from the community might have faced and resolved this issue differently then me. -Nick On Tue, Aug 31, 2010 at 12:54 PM, issam boughanmi amigof...@gmail.comwrote: can you explain more in details this please ? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31188#31188 ___ 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
Re: [osg-users] [osgOcean] increase ocean view range
Hi nick and thanks for your support ;) i can investigate for your suggestion about lod node , shape files integration ... etc but for now i have a simple question : can i simply increase the ocean grid size surface ? if yes how ? my terrain is built like i said with vpb using srtm elevation file and landsat geotiff images + some high res geotiff files of some regions i am using this in a flight sim app the terrain database work perfectelly and now i want to integrate osgocean for the sea side region of my map -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31194#31194 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
yes. look in the setup code for the oceansurface (I think. Dont have the code with me at the moment, but as far I can recall you can do that). -Nick On Tue, Aug 31, 2010 at 2:15 PM, issam boughanmi amigof...@gmail.comwrote: Hi nick and thanks for your support ;) i can investigate for your suggestion about lod node , shape files integration ... etc but for now i have a simple question : can i simply increase the ocean grid size surface ? if yes how ? my terrain is built like i said with vpb using srtm elevation file and landsat geotiff images + some high res geotiff files of some regions i am using this in a flight sim app the terrain database work perfectelly and now i want to integrate osgocean for the sea side region of my map -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31194#31194 ___ 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
Re: [osg-users] [osgOcean] increase ocean view range
yes from the osgapp example Code: _oceanSurface = new osgOcean::FFTOceanSurface( 64, 256, 17, windDirection, windSpeed, depth, reflectionDamping, waveScale, isChoppy, choppyFactor, 10.f, 256 ); i tried before to increase some of these value but i got a very strange and horrible effect since i don't know each parameter value correspondence for example i tried this before Code: _oceanSurface = new osgOcean::FFTOceanSurface( 128, 512, 33, windDirection, windSpeed, depth, reflectionDamping, waveScale, isChoppy, choppyFactor, 10.f, 256 ); -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31198#31198 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
hi back to the original question here two screens that describe the problem i am facing [Image: http://img90.imageshack.us/img90/183/fsim1.th.jpg ] (http://img90.imageshack.us/i/fsim1.jpg/) [Image: http://img521.imageshack.us/img521/439/fsim2.th.jpg ] (http://img521.imageshack.us/i/fsim2.jpg/) especially in the second screen the effect is more visible i have just a small square area of sea even with the enableEndless option and when the main player is in hight altitude the sea disappears any help or orientation is welcome -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31146#31146 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
I think the endless option will not produce real endless ocean you can see it from any range. I think it is rather following your eyepoint and render enough so you can see it all the time. Just my thoughts, might be good to check it actually -Nick On Mon, Aug 30, 2010 at 1:24 PM, issam boughanmi amigof...@gmail.comwrote: hi back to the original question here two screens that describe the problem i am facing [Image: http://img90.imageshack.us/img90/183/fsim1.th.jpg ] ( http://img90.imageshack.us/i/fsim1.jpg/) [Image: http://img521.imageshack.us/img521/439/fsim2.th.jpg ] ( http://img521.imageshack.us/i/fsim2.jpg/) especially in the second screen the effect is more visible i have just a small square area of sea even with the enableEndless option and when the main player is in hight altitude the sea disappears any help or orientation is welcome -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31146#31146 ___ 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
Re: [osg-users] [osgOcean] increase ocean view range
yes from i have read the endless option adapt only the point of view to simulate endless effect that's said : how to get endless effect with osgocean especially in high altitude thanks and good day -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31159#31159 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
I guess you would need to put some LOD on the ocean culture. -Nick On Mon, Aug 30, 2010 at 6:44 PM, issam boughanmi amigof...@gmail.comwrote: yes from i have read the endless option adapt only the point of view to simulate endless effect that's said : how to get endless effect with osgocean especially in high altitude thanks and good day -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31159#31159 ___ 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
Re: [osg-users] [osgOcean] increase ocean view range
no one on this ? ok another question how to integrate osgocean into a pagedlod terrain database built with vpb ? i tried lot of things without success -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31127#31127 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
nice screens ! can you show me your graph structure i tried every combination : ocean as a child, as a parent of the terrain parent, in the same level Hello, I havent tried with a database built with vpb, but I did it with database built with TerraVista. The key was to cut out the ocean (make a hole) to be later replaced by osgOcean. do you mean make a hole in the terrain ? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31129#31129 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] [osgOcean] increase ocean view range
with osgocean there is an example coming which shows you how to add your own terrain. in the sample, the file loaded is called island.ive. Mimic the code and put there your database. That is what I did -Nick On Sun, Aug 29, 2010 at 5:39 PM, issam boughanmi amigof...@gmail.comwrote: nice screens ! can you show me your graph structure i tried every combination : ocean as a child, as a parent of the terrain parent, in the same level Hello, I havent tried with a database built with vpb, but I did it with database built with TerraVista. The key was to cut out the ocean (make a hole) to be later replaced by osgOcean. do you mean make a hole in the terrain ? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31129#31129 ___ 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
Re: [osg-users] [osgOcean] increase ocean view range
do you mean make a hole in the terrain ? yes -Nick On Sun, Aug 29, 2010 at 5:39 PM, issam boughanmi amigof...@gmail.comwrote: nice screens ! can you show me your graph structure i tried every combination : ocean as a child, as a parent of the terrain parent, in the same level Hello, I havent tried with a database built with vpb, but I did it with database built with TerraVista. The key was to cut out the ocean (make a hole) to be later replaced by osgOcean. do you mean make a hole in the terrain ? -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=31129#31129 ___ 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
