基于osg的河流显示，可以达到实时绘制效果

osgOcean v1.0 ------------- DEPENDANCIES ------------ Resources --------- Both the library and the example require a set of resource files (models/textures) which can be downloaded from here: http://osgocean.googlecode.com/files/osgOcean-Resources-1.0.rar Once you downloaded them, extract the 'Island' and 'Textures' folders into the resources directory found in the root of the source code tree. The install project will copy the relevant data files to the bin path like so: *install_path*/bin/resources/ osgOcean uses the osgDB registry to find the resource files. By default it adds the following paths to the registry: Shader path: resources/shaders/ Texture path: resources/textures/ If you wish to move these resources you must update the data file path list within the registry yourself. This can be down from outside the library with the following code: osgDB::FilePathList& pathList = osgDB::Registry::instance()->getDataFilePathList(); pathList.push_back( new_path ); Libraries --------- osgOcean also requires a Fast Fourier Transform library. It can work with either FFTW or FFTSS. **IMPORTANT LICENSE ISSUE** FFTW is released under a General Public License, by selecting this option in CMAKE the resulting build of osgOcean will also be covered under the GPL license. GPL License details: http://www.gnu.org/copyleft/gpl.html FFTSS is covered under a Lesser General Public License which allows the osgOcean library to remain LGPL. LGPL License details: http://www.gnu.org/licenses/lgpl.html or see LICENSE.txt FFTW and FFTSS can be downloaded from: FFTW: http://www.fftw.org/ FFTSS: http://www.ssisc.org/fftss/