本文整理汇总了C++中MapFrame::getLayers方法的典型用法代码示例。如果您正苦于以下问题：C++ MapFrame::getLayers方法的具体用法？C++ MapFrame::getLayers怎么用？C++ MapFrame::getLayers使用的例子？那么, 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MapFrame的用法示例。
在下文中一共展示了MapFrame::getLayers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: TileModel
void
TileModelFactory::createTileModel(const TileKey& key,
const MapFrame& frame,
bool accumulate,
osg::ref_ptr<TileModel>& out_model,
ProgressCallback* progress)
{
osg::ref_ptr<TileModel> model = new TileModel( frame.getRevision(), frame.getMapInfo() );
model->_useParentData = _terrainReqs->parentTexturesRequired();
model->_tileKey = key;
model->_tileLocator = GeoLocator::createForKey(key, frame.getMapInfo());
OE_START_TIMER(fetch_imagery);
// Fetch the image data and make color layers.
unsigned index = 0;
unsigned order = 0;
ImageLayerVector imageLayers;
frame.getLayers(imageLayers);
for( ImageLayerVector::const_iterator i = imageLayers.begin(); i != imageLayers.end(); ++i )
{
ImageLayer* layer = i->get();
if ( layer->getEnabled() && layer->isKeyInRange(key) )
{
BuildColorData build;
build.init( key, layer, order, frame.getMapInfo(), _terrainOptions, _liveTiles.get(), model.get() );
bool addedToModel = build.execute(progress);
if ( addedToModel )
{
// only bump the order if we added something to the data model.
order++;
}
}
}
if (progress)
progress->stats()["fetch_imagery_time"] += OE_STOP_TIMER(fetch_imagery);
// make an elevation layer.
OE_START_TIMER(fetch_elevation);
buildElevation(key, frame, accumulate, _terrainReqs->elevationTexturesRequired(), model.get(), progress);
if (progress)
progress->stats()["fetch_elevation_time"] += OE_STOP_TIMER(fetch_elevation);
// make a normal map layer (if necessary)
if ( _terrainReqs->normalTexturesRequired() )
{
OE_START_TIMER(fetch_normalmap);
buildNormalMap(key, frame, accumulate, model.get(), progress);
if (progress)
progress->stats()["fetch_normalmap_time"] += OE_STOP_TIMER(fetch_normalmap);
}
// If nothing was added, not even a fallback heightfield, something went
// horribly wrong. Leave without a tile model. Chances are that a parent tile
// not not found in the live-tile registry.
if ( model->_colorData.size() == 0 && !model->_elevationData.getHeightField() )
{
return;
}
// OK we are making a tile, so if there's no heightfield yet, make an empty one (and mark it
// as fallback data of course)
if ( !model->_elevationData.getHeightField() )
{
osg::HeightField* hf = HeightFieldUtils::createReferenceHeightField( key.getExtent(), 15, 15, 0u );
model->_elevationData = TileModel::ElevationData(
hf,
GeoLocator::createForKey(key, frame.getMapInfo()),
true );
}
// look up the parent model and cache it.
osg::ref_ptr<TileNode> parentTile;
if ( _liveTiles->get(key.createParentKey(), parentTile) )
{
model->_parentModel = parentTile->getTileModel();
}
out_model = model.release();
}