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Introduced osgTerrain::WhiteListTileLoadedCallback for the management of options terrain layers

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This commit is contained in:
Robert Osfield
2008-09-11 13:21:58 +00:00
parent a214a677f8
commit ff299eb104
4 changed files with 305 additions and 192 deletions
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216
src/osgTerrain/TerrainTile.cpp
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@@ -16,9 +16,16 @@
#include <osg/ClusterCullingCallback>
#include <osgDB/ReadFile>
using namespace osg;
using namespace osgTerrain;
/////////////////////////////////////////////////////////////////////////////////
//
// TerrainTile
//
void TerrainTile::setTileLoadedCallback(TerrainTile::TileLoadedCallback* lc)
{
getTileLoadedCallback() = lc;
@@ -212,3 +219,212 @@ osg::BoundingSphere TerrainTile::computeBound() const
return bs;
}
/////////////////////////////////////////////////////////////////////////////////
//
// WhiteListTileLoadedCallback
//
WhiteListTileLoadedCallback::WhiteListTileLoadedCallback()
{
_minumumNumberOfLayers = 0;
_replaceSwitchLayer = true;
_allowAll = false;
}
WhiteListTileLoadedCallback::~WhiteListTileLoadedCallback()
{
}
bool WhiteListTileLoadedCallback::layerAcceptable(const std::string& setname) const
{
if (_allowAll) return true;
if (setname.empty()) return true;
return _setWhiteList.count(setname)!=0;
}
bool WhiteListTileLoadedCallback::readImageLayer(osgTerrain::ImageLayer* imageLayer, const osgDB::ReaderWriter::Options* options) const
{
if (!imageLayer->getImage() &&
!imageLayer->getFileName().empty())
{
if (layerAcceptable(imageLayer->getSetName()))
{
osg::ref_ptr<osg::Image> image = osgDB::readImageFile(imageLayer->getFileName(), options);
imageLayer->setImage(image.get());
}
}
return imageLayer->getImage()!=0;
}
bool WhiteListTileLoadedCallback::deferExternalLayerLoading() const
{
return true;
}
void WhiteListTileLoadedCallback::loaded(osgTerrain::TerrainTile* tile, const osgDB::ReaderWriter::Options* options) const
{
// read any external layers
for(unsigned int i=0; i<tile->getNumColorLayers(); ++i)
{
osgTerrain::Layer* layer = tile->getColorLayer(i);
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(layer);
if (imageLayer)
{
readImageLayer(imageLayer, options);
continue;
}
osgTerrain::SwitchLayer* switchLayer = dynamic_cast<osgTerrain::SwitchLayer*>(layer);
if (switchLayer)
{
for(unsigned int si=0; si<switchLayer->getNumLayers(); ++si)
{
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(switchLayer->getLayer(si));
if (imageLayer)
{
if (readImageLayer(imageLayer, options))
{
// replace SwitchLayer by
if (_replaceSwitchLayer) tile->setColorLayer(i, imageLayer);
else if (switchLayer->getActiveLayer()<0) switchLayer->setActiveLayer(si);
continue;
}
}
}
continue;
}
osgTerrain::CompositeLayer* compositeLayer = dynamic_cast<osgTerrain::CompositeLayer*>(layer);
if (compositeLayer)
{
for(unsigned int ci=0; ci<compositeLayer->getNumLayers(); ++ci)
{
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(compositeLayer->getLayer(ci));
if (imageLayer)
{
readImageLayer(imageLayer, options);
}
}
continue;
}
}
// assign colour layers over missing layers
osgTerrain::Layer* validLayer = 0;
for(unsigned int i=0; i<tile->getNumColorLayers(); ++i)
{
osgTerrain::Layer* layer = tile->getColorLayer(i);
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(layer);
if (imageLayer)
{
if (imageLayer->getImage()!=0)
{
validLayer = imageLayer;
}
continue;
}
osgTerrain::SwitchLayer* switchLayer = dynamic_cast<osgTerrain::SwitchLayer*>(layer);
if (switchLayer)
{
for(unsigned int si=0; si<switchLayer->getNumLayers(); ++si)
{
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(switchLayer->getLayer(si));
if (imageLayer && imageLayer->getImage()!=0)
{
validLayer = imageLayer;
}
}
continue;
}
osgTerrain::CompositeLayer* compositeLayer = dynamic_cast<osgTerrain::CompositeLayer*>(layer);
if (compositeLayer)
{
for(unsigned int ci=0; ci<compositeLayer->getNumLayers(); ++ci)
{
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(switchLayer->getLayer(ci));
if (imageLayer && imageLayer->getImage()!=0)
{
validLayer = imageLayer;
}
}
continue;
}
}
if (validLayer)
{
// fill in any missing layers
for(unsigned int i=0; i<tile->getNumColorLayers(); ++i)
{
osgTerrain::Layer* layer = tile->getColorLayer(i);
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(layer);
if (imageLayer)
{
if (imageLayer->getImage()==0)
{
tile->setColorLayer(i, validLayer);
break;
}
continue;
}
osgTerrain::SwitchLayer* switchLayer = dynamic_cast<osgTerrain::SwitchLayer*>(layer);
if (switchLayer)
{
for(unsigned int si=0; si<switchLayer->getNumLayers(); ++si)
{
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(switchLayer->getLayer(si));
if (imageLayer && imageLayer->getImage()==0)
{
if (_replaceSwitchLayer) tile->setColorLayer(i, imageLayer);
else
{
switchLayer->setLayer(si, validLayer);
if (switchLayer->getActiveLayer()<0) switchLayer->setActiveLayer(si);
}
break;
}
}
if (switchLayer->getNumLayers()==0)
{
if (_replaceSwitchLayer) tile->setColorLayer(i, validLayer);
else
{
switchLayer->setLayer(0, validLayer);
switchLayer->setActiveLayer(0);
}
}
}
osgTerrain::CompositeLayer* compositeLayer = dynamic_cast<osgTerrain::CompositeLayer*>(layer);
if (compositeLayer)
{
for(unsigned int ci=0; ci<compositeLayer->getNumLayers(); ++ci)
{
osgTerrain::ImageLayer* imageLayer = dynamic_cast<osgTerrain::ImageLayer*>(switchLayer->getLayer(ci));
if (imageLayer && imageLayer->getImage()==0)
{
tile->setColorLayer(i, validLayer);
break;
}
}
continue;
}
}
if (_minumumNumberOfLayers>tile->getNumColorLayers())
{
for(unsigned int i=tile->getNumColorLayers(); i<_minumumNumberOfLayers; ++i)
{
tile->setColorLayer(i, validLayer);
}
}
}
}