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WS3.0: Initial commit to load and render WS3.0

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This commit is contained in:
Stuart Buchanan 2020-11-08 22:36:45 +00:00
parent cbd8e3acc4
commit 8d5428bf77
3 changed files with 153 additions and 3 deletions
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2
CMakeLists.txt
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@ -161,7 +161,7 @@ else()
endif()
endif(ENABLE_SOUND)
find_package(OpenSceneGraph 3.4.1 REQUIRED osgText osgSim osgDB osgParticle osgGA osgViewer osgUtil)
find_package(OpenSceneGraph 3.4.1 REQUIRED osgText osgSim osgDB osgParticle osgGA osgViewer osgUtil osgTerrain)
if (MSVC)
set(CMAKE_REQUIRED_INCLUDES ${OPENSCENEGRAPH_INCLUDE_DIRS})

152
simgear/scene/model/ModelRegistry.cxx
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@ -48,6 +48,8 @@
#include <osgUtil/Optimizer>
#include <osg/Texture>
#include <osgTerrain/Terrain>
#include <simgear/sg_inlines.h>
#include <simgear/scene/util/SGSceneFeatures.hxx>
@ -56,6 +58,8 @@
#include <simgear/scene/util/SGReaderWriterOptions.hxx>
#include <simgear/scene/util/NodeAndDrawableVisitor.hxx>
#include <simgear/scene/tgdb/VPBTechnique.hxx>
#include <simgear/structure/exception.hxx>
#include <simgear/props/props.hxx>
#include <simgear/props/props_io.hxx>
@ -869,6 +873,145 @@ struct IVEOptimizePolicy : public OptimizeModelPolicy {
}
};
template<class T>
class FindTopMostNodeOfTypeVisitor : public osg::NodeVisitor
{
public:
FindTopMostNodeOfTypeVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
_foundNode(0)
{}
void apply(osg::Node& node)
{
T* result = dynamic_cast<T*>(&node);
if (result)
{
_foundNode = result;
}
else
{
traverse(node);
}
}
T* _foundNode;
};
template<class T>
T* findTopMostNodeOfType(osg::Node* node)
{
if (!node) return 0;
FindTopMostNodeOfTypeVisitor<T> fnotv;
node->accept(fnotv);
return fnotv._foundNode;
}
class CleanTechniqueVisitor : public osg::NodeVisitor
{
public:
CleanTechniqueVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN) {}
void apply(osg::Node& node)
{
osgTerrain::TerrainTile* tile = dynamic_cast<osgTerrain::TerrainTile*>(&node);
if (tile)
{
if (tile->getTerrainTechnique())
{
// OSG_NOTICE<<"Resetting TerrainTechnhique "<<tile->getTerrainTechnique()->className()<<" to 0"<<std::endl;
tile->setTerrainTechnique(0);
}
}
else
{
traverse(node);
}
}
};
struct OSGOptimizePolicy : public OptimizeModelPolicy {
OSGOptimizePolicy(const string& extension) :
OptimizeModelPolicy(extension)
{
_osgOptions &= ~Optimizer::TRISTRIP_GEOMETRY;
}
Node* optimize(Node* node, const string& fileName,
const Options* opt)
{
ref_ptr<Node> optimized = node;
const SGReaderWriterOptions* sgopt
= dynamic_cast<const SGReaderWriterOptions*>(opt);
if (fileName.find("vpb/WS_") != string::npos) {
// Currently the only way we have to identify WS3.0 / VirtualPlanetBuilder files is by the filename
// Clean out any existing osgTerrain techniques
CleanTechniqueVisitor ctv;
optimized->accept(ctv);
osg::ref_ptr<osgTerrain::Terrain> terrain = findTopMostNodeOfType<osgTerrain::Terrain>(optimized.get());
if (terrain != NULL) {
// Top level
terrain->setSampleRatio(1.0);
terrain->setVerticalScale(1.0);
terrain->setBlendingPolicy(osgTerrain::TerrainTile::INHERIT);
terrain->setTerrainTechniquePrototype(new VPBTechnique(sgopt));
} else {
// no Terrain node present insert one above the loaded model.
terrain = new osgTerrain::Terrain;
//SG_LOG(SG_TERRAIN, SG_ALERT, "Creating Terrain Node for " << fileName);
// if CoordinateSystemNode is present copy it's contents into the Terrain, and discard it.
osg::CoordinateSystemNode* csn = findTopMostNodeOfType<osg::CoordinateSystemNode>(optimized.get());
if (csn)
{
terrain->set(*csn);
for(unsigned int i=0; i<csn->getNumChildren();++i)
{
terrain->addChild(csn->getChild(i));
}
}
else
{
terrain->addChild(optimized.get());
}
}
}
optimized = OptimizeModelPolicy::optimize(optimized, fileName, opt);
Group* group = dynamic_cast<Group*>(optimized.get());
MatrixTransform* transform
= dynamic_cast<MatrixTransform*>(optimized.get());
if (((transform && transform->getMatrix().isIdentity()) || group)
&& group->getName().empty()
&& group->getNumChildren() == 1) {
optimized = static_cast<Node*>(group->getChild(0));
group = dynamic_cast<Group*>(optimized.get());
if (group && group->getName().empty()
&& group->getNumChildren() == 1)
optimized = static_cast<Node*>(group->getChild(0));
}
if (sgopt && sgopt->getInstantiateMaterialEffects()) {
optimized = instantiateMaterialEffects(optimized.get(), sgopt);
}
else if (sgopt && sgopt->getInstantiateEffects()) {
optimized = instantiateEffects(optimized.get(), sgopt);
}
return optimized.release();
}
};
struct IVEProcessPolicy {
IVEProcessPolicy(const string& extension) {}
Node* process(Node* node, const string& filename,
@ -897,12 +1040,17 @@ typedef ModelRegistryCallback<IVEProcessPolicy, DefaultCachePolicy,
OSGSubstitutePolicy, BuildLeafBVHPolicy>
IVECallback;
typedef ModelRegistryCallback<IVEProcessPolicy, DefaultCachePolicy,
OSGOptimizePolicy,
OSGSubstitutePolicy, BuildLeafBVHPolicy>
OSGCallback;
namespace
{
ModelRegistryCallbackProxy<ACCallback> g_acRegister("ac");
ModelRegistryCallbackProxy<OBJCallback> g_objRegister("obj");
ModelRegistryCallbackProxy<IVECallback> g_iveRegister("ive");
ModelRegistryCallbackProxy<IVECallback> g_osgtRegister("osgt");
ModelRegistryCallbackProxy<IVECallback> g_osgbRegister("osgb");
ModelRegistryCallbackProxy<OSGCallback> g_osgtRegister("osgt");
ModelRegistryCallbackProxy<OSGCallback> g_osgbRegister("osgb");
}

2
simgear/scene/tgdb/CMakeLists.txt
View File

@ -19,6 +19,7 @@ set(HEADERS
SGVertexArrayBin.hxx
ShaderGeometry.hxx
TreeBin.hxx
VPBTechnique.hxx
apt_signs.hxx
obj.hxx
pt_lights.hxx
@ -35,6 +36,7 @@ set(SOURCES
SGVasiDrawable.cxx
ShaderGeometry.cxx
TreeBin.cxx
VPBTechnique.cxx
apt_signs.cxx
obj.cxx
pt_lights.cxx