Hi! I apologize but I have not understood well.I have need to draw the ground that is in the file terrain.jpg without the plan that is visualized around.
I don't understand as I must use the NoDataValue.
Besides I also have problems to color the terrain. My objective is to draw a terrain with a casting of washes.Can you recommend me a book where to find a good documentation for my specific problem?
Thanks Aurora Restivo. Robert Osfield ha scritto:
Hi Aurora, I think what you are looking for is the osgTerrain::ValidDataOperator that you can attach to your elevation layer via Layer::setValidDataOperator(operator); In include/osgTerrain/ValidDataOperator you'll find the NoDataValue subclass which is probably what you want to use in your case. Robert. On Feb 19, 2008 12:33 PM, aurora restivo <[EMAIL PROTECTED]> wrote:Hi! the image jpg in enclosure, is the result of the terrain that I have drawn beginning from the matrix of the altitudes. I would want to know if a way exists for not visualizing the quotas equal to 0. the source code is found in the file morfologia.txt Thanks in advance. Aurora Restivo
<<inline: terrain.JPG>>
int** m= g->leggiFile("morf0.txt"); osg::HeightField* hF = new osg::HeightField(); hF->allocate(296,410); for(int i=0; i< 410; i++) { for(int j=0; j<296 ;j++) { if(m[i][j]!=0) hF->setHeight(j,i, m[i][j]); else hF->setHeight(j,i, m[i][j]); } } hF->setXInterval(41.0); hF->setYInterval(29.6); osg::Quat* quat= new osg::Quat(0,0,180,45); hF->setRotation(*quat); osgTerrain::Terrain* terrainNode= new osgTerrain::Terrain(); osgTerrain::HeightFieldLayer* hFLayer= new osgTerrain::HeightFieldLayer(); hFLayer->setHeightField(hF); terrainNode->setElevationLayer(hFLayer); osg::Geode* geode= new osg::Geode(); osg::ShapeDrawable* draw= new osg::ShapeDrawable(hF); geode->addDrawable(draw);
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