本文整理汇总了C++中TileNode::addChild方法的典型用法代码示例。如果您正苦于以下问题：C++ TileNode::addChild方法的具体用法？C++ TileNode::addChild怎么用？C++ TileNode::addChild使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类TileNode的用法示例。
在下文中一共展示了TileNode::addChild方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: factory
TileNode*
TileGroupFactory::createTileNodeGraph(TerrainTileModel* model,
bool setupChildrenIfNecessary,
ProgressCallback* progress)
{
// TODO: fix this
const unsigned tileSize = 17;
// Build the surface node.
SurfaceNodeFactory factory(model, _frame, _renderBindings, _geometryPool, tileSize, _options);
SurfaceNode* surfaceNode = factory.createSurfaceNode();
surfaceNode->setEngineUID( _terrainEngine->getUID() );
// see if this tile might have children.
bool prepareForChildren =
setupChildrenIfNecessary &&
model->getKey().getLOD() < *_options.maxLOD();
// Build the Tile Node that will hold all the textures and texture matrices.
TileNode* tileNode = createTileNode(
model,
progress );
// Build the paging node that will load subtiles, if necessary:
if ( prepareForChildren )
{
osg::BoundingSphere bs = surfaceNode->getBound();
TilePagedLOD* plod = new TilePagedLOD( _terrainEngine->getUID(), _liveTiles, _deadTiles );
plod->setCenter ( bs.center() );
plod->addChild ( surfaceNode );
plod->setFileName( 1, Stringify()
<< model->getKey().str()
<< "." << _terrainEngine->getUID()
<< ".osgearth_engine_mp_tile" );
if ( _options.rangeMode().value() == osg::LOD::DISTANCE_FROM_EYE_POINT )
{
//Compute the min range based on the 2D size of the tile
GeoExtent extent = model->getKey().getExtent();
GeoPoint lowerLeft(extent.getSRS(), extent.xMin(), extent.yMin(), 0.0, ALTMODE_ABSOLUTE);
GeoPoint upperRight(extent.getSRS(), extent.xMax(), extent.yMax(), 0.0, ALTMODE_ABSOLUTE);
osg::Vec3d ll, ur;
lowerLeft.toWorld( ll );
upperRight.toWorld( ur );
double radius = (ur - ll).length() / 2.0;
float minRange = (float)(radius * _options.minTileRangeFactor().value());
plod->setRange( 0, minRange, FLT_MAX );
plod->setRange( 1, 0, minRange );
plod->setRangeMode( osg::LOD::DISTANCE_FROM_EYE_POINT );
}
else
{
plod->setRange( 0, 0.0f, _options.tilePixelSize().value() );
plod->setRange( 1, _options.tilePixelSize().value(), FLT_MAX );
plod->setRangeMode( osg::LOD::PIXEL_SIZE_ON_SCREEN );
}
#if 0 // TODO: reinstate this!
// Install a tile-aligned bounding box in the pager node itself so we can do
// visibility testing before paging in subtiles.
plod->setChildBoundingBoxAndMatrix(
1,
surfaceNode->getTerrainBoundingBox(),
surfaceNode->getLocalToWorldMatrix() );
#endif
#if USE_FILELOCATIONCALLBACK
osgDB::Options* options = plod->getOrCreateDBOptions();
options->setFileLocationCallback( new FileLocationCallback() );
#endif
tileNode->addChild( plod );
// Install a callback to reject back-facing tiles.
if ( _frame.getMapInfo().isGeocentric() && _options.clusterCulling() == true )
{
const osg::HeightField* heightField = model->elevationModel()->getHeightField();
if ( heightField )
{
tileNode->addCullCallback( HeightFieldUtils::createClusterCullingCallback(
heightField,
tileNode->getKey().getProfile()->getSRS()->getEllipsoid(),
*_options.verticalScale() ) );
}
}
}
else
{
tileNode->addChild( surfaceNode );
}
return tileNode;
}