protected bool build(BuildLayer layer)
{
string work_dir_name = project.getAbsoluteWorkingDirectory();
if (string.IsNullOrEmpty(work_dir_name))
{
work_dir_name = "work_" + project.getName();
}
string work_dir = PathUtils.combinePaths(
project.getBaseURI(),
work_dir_name);
if (osgDB.makeDirectory(work_dir))
{
Registry.instance().setWorkDirectory(work_dir);
}
//osgGIS.notice() << "Building layer \"" << layer.getName() << "\"." << std.endl;
// first create and initialize a Session that will share data across the build.
Session session = new Session();
// add shared scripts to the session:
foreach (Script i in project.getScripts())
{
session.addScript(i);
}
// add shared resources to the session:
foreach (Resource i in project.getResources())
{
session.getResources().addResource(i);
}
// now establish the source data record form this layer and open a feature layer
// that connects to that source.
Source source = layer.getSource(); // default source.. may be overriden in slices
//if ( !source )
//{
// //TODO: log error
// osgGIS.notify( osg.WARN )
// << "No source specified for layer \"" << layer.getName() << "\"." << std.endl;
// return false;
//}
// recursively build any sources that need building.
if (source && !build(source, session.get()))
{
// osgGIS.warn()
// << "Unable to build source \"" << source.getName() << "\" or one of its dependencies."
// << std.endl;
return(false);
}
FeatureLayer feature_layer;
if (source != null)
{
feature_layer = Registry.instance().createFeatureLayer(source.getAbsoluteURI());
if (feature_layer == null)
{
//TODO: log error
//osgGIS.warn()
// << "Cannot access source \"" << source.getName()
// << "\" for layer \"" << layer.getName() << "\"." << std.endl;
return(false);
}
}
// The reference terrain:
osg.Node terrain_node;
SpatialReference terrain_srs;
GeoExtent terrain_extent;
Terrain terrain = layer.getTerrain();
if (!getTerrainData(terrain, terrain_node, terrain_srs, terrain_extent))
{
return(false);
}
// output file:
string output_file = layer.getAbsoluteTargetPath();
osgDB.makeDirectoryForFile(output_file);
if (!osgDB.fileExists(osgDB.getFilePath(output_file)))
{
//osgGIS.warn()
// << "Unable to establish target location for layer \""
// << layer.getName() << "\" at \"" << output_file << "\"."
// << std.endl;
return(false);
}
// whether to include textures in IVE files:
bool inline_ive_textures = layer.getProperties().getBoolValue("inline_textures", false);
// TODO: deprecate this as we move towards the ResourcePackager...
osgDB.ReaderWriter.Options options;
if (inline_ive_textures)
{
options = new osgDB.ReaderWriter.Options("noWriteExternalReferenceFiles useOriginalExternalReferences");
}
else
{
options = new osgDB.ReaderWriter.Options("noTexturesInIVEFile noWriteExternalReferenceFiles useOriginalExternalReferences");
}
osgDB.Registry.instance().setOptions(options);
osgDB.Archive archive;
string archive_file = output_file;
if (osgDB.getLowerCaseFileExtension(output_file) == "osga")
{
archive = osgDB.openArchive(output_file, osgDB.Archive.CREATE, 4096);
output_file = "out.ive";
// since there's no way to set the master file name...fake it out
osg.Group dummy = new osg.Group();
archive.writeNode(dummy, output_file);
}
// intialize a task manager if necessary:
TaskManager manager =
num_threads > 1? new TaskManager(num_threads) :
num_threads < 1? new TaskManager() :
null;
// prep the map layer definition:
MapLayer map_layer = new MapLayer();
// a resource packager if necessary will copy ext-ref files to the output location:
ResourcePackager packager = new ResourcePackager();
packager.setArchive(archive.get());
packager.setOutputLocation(osgDB.getFilePath(output_file));
if (layer.getProperties().getBoolValue("localize_resources", false))
{
packager.setMaxTextureSize(layer.getProperties().getIntValue("max_texture_size", 0));
packager.setCompressTextures(layer.getProperties().getBoolValue("compress_textures", false));
packager.setInlineTextures(layer.getProperties().getBoolValue("inline_textures", false));
}
if (!addSlicesToMapLayer(layer.getSlices(), layer.getEnvProperties(), map_layer, packager, 0, session, source))
{
//osgGIS.warn() << "Failed to add all slices to layer " << layer.getName() << std.endl;
return(false);
}
// calculate the grid cell size:
double col_size = layer.getProperties().getDoubleValue("col_size", -1.0);
double row_size = layer.getProperties().getDoubleValue("row_size", -1.0);
if (col_size <= 0.0 || row_size <= 0.0)
{
int num_cols = Math.Max(1, layer.getProperties().getIntValue("num_cols", 1));
int num_rows = Math.Max(1, layer.getProperties().getIntValue("num_rows", 1));
col_size = map_layer.getAreaOfInterest().getWidth() / (double)num_cols;
row_size = map_layer.getAreaOfInterest().getHeight() / (double)num_rows;
}
map_layer.setCellWidth(col_size);
map_layer.setCellHeight(row_size);
map_layer.setEncodeCellRadius(layer.getProperties().getBoolValue("encode_cell_radius", true));
MapLayerCompiler compiler;
// figure out which compiler to use:
if (layer.getType() == BuildLayer.LayerType.TYPE_QUADTREE)
{
compiler = new QuadTreeMapLayerCompiler(map_layer, session);
}
else if (layer.getType() == BuildLayer.LayerType.TYPE_GRIDDED)
{
compiler = new GriddedMapLayerCompiler(map_layer.get(), session.);
}
else if (layer.getType() == BuildLayer.LayerType.TYPE_SIMPLE)
{
compiler = new SimpleMapLayerCompiler(map_layer, session);
}
if (compiler.get())
{
compiler.setAbsoluteOutputURI(output_file);
compiler.setPaged(layer.getProperties().getBoolValue("paged", true));
compiler.setTerrain(terrain_node.get(), terrain_srs, terrain_extent);
compiler.setArchive(archive.get(), archive_file);
compiler.setResourcePackager(packager.get());
// build the layer and write the root file to output:
osg.Group result = compiler.compile(manager.get());
if (result != null)
{
packager.packageNode(result.get(), output_file);
}
}
if (archive != null)
{
archive.close();
}
//osgGIS.notice() << "Done building layer \"" << layer.getName() << "\"." << std.endl;
return(true);
}
/*** Class methods ***************************************************/
bool Builder.addSlicesToMapLayer(BuildLayerSliceList slices,
Properties env_properties,
MapLayer map_layer,
ResourcePackager default_packager,
uint depth,
Session session,
Source parent_source)
{
foreach (BuildLayerSlice i in slices)
{
BuildLayerSlice slice = i;
if (slice.getSource() != null && !build(slice.getSource(), session))
{
// osgGIS.warn()
// << "Unable to build source \"" << slice.getSource().getName() << "\" or one of its dependencies."
// << std.endl;
return(false);
}
Source slice_source = slice.getSource() != null?slice.getSource() : parent_source;
ResourcePackager packager = default_packager ? default_packager.clone() : null;
if (packager != null)
{
packager.setMaxTextureSize(
slice.getProperties().getIntValue("max_texture_size", default_packager.getMaxTextureSize()));
packager.setCompressTextures(
slice.getProperties().getBoolValue("compress_textures", default_packager.getCompressTextures()));
packager.setInlineTextures(
slice.getProperties().getBoolValue("inline_textures", default_packager.getInlineTextures()));
}
if (slice_source != null)
{
FeatureLayer feature_layer = Registry.instance().createFeatureLayer(
slice_source.getAbsoluteURI());
if (feature_layer == null)
{
//osgGIS.warn() << "Cannot access source \"" << slice_source.getName() << std.endl;
return(false);
}
map_layer.push(
feature_layer,
slice.getFilterGraph(),
env_properties,
packager.get(),
slice.getMinRange(),
slice.getMaxRange(),
true,
depth,
null);
}
// now add any sub-slice children:
if (!addSlicesToMapLayer(slice.getSubSlices(), env_properties, map_layer, packager.get(), depth + 1, session, slice_source))
{
return(false);
}
}
return(true);
}
