#include <stdio.h>
#include <string.h>
-#include <osgUtil/IntersectVisitor>
-
+#include <osg/Camera>
+#include <osg/Transform>
+#include <osg/MatrixTransform>
+#include <osg/PositionAttitudeTransform>
+#include <osg/CameraView>
+#include <osgViewer/Viewer>
+
+#include <simgear/constants.h>
+#include <simgear/sg_inlines.h>
#include <simgear/debug/logstream.hxx>
#include <simgear/scene/tgdb/userdata.hxx>
-#include <simgear/math/sg_geodesy.hxx>
-#include <simgear/scene/model/placementtrans.hxx>
#include <simgear/scene/material/matlib.hxx>
+#include <simgear/scene/material/mat.hxx>
#include <simgear/scene/util/SGNodeMasks.hxx>
+#include <simgear/scene/util/OsgMath.hxx>
#include <simgear/scene/util/SGSceneUserData.hxx>
+#include <simgear/scene/model/CheckSceneryVisitor.hxx>
+#include <simgear/bvh/BVHNode.hxx>
+#include <simgear/bvh/BVHLineSegmentVisitor.hxx>
+#include <Viewer/renderer.hxx>
#include <Main/fg_props.hxx>
+#include "tilemgr.hxx"
#include "scenery.hxx"
+using namespace flightgear;
+using namespace simgear;
+
class FGGroundPickCallback : public SGPickCallback {
public:
virtual bool buttonPressed(int button, const Info& info)
}
};
+class FGSceneryIntersect : public osg::NodeVisitor {
+public:
+ FGSceneryIntersect(const SGLineSegmentd& lineSegment,
+ const osg::Node* skipNode) :
+ osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN),
+ _lineSegment(lineSegment),
+ _skipNode(skipNode),
+ _material(0),
+ _haveHit(false)
+ { }
+
+ bool getHaveHit() const
+ { return _haveHit; }
+ const SGLineSegmentd& getLineSegment() const
+ { return _lineSegment; }
+ const simgear::BVHMaterial* getMaterial() const
+ { return _material; }
+
+ virtual void apply(osg::Node& node)
+ {
+ if (&node == _skipNode)
+ return;
+ if (!testBoundingSphere(node.getBound()))
+ return;
+
+ addBoundingVolume(node);
+ }
+
+ virtual void apply(osg::Group& group)
+ {
+ if (&group == _skipNode)
+ return;
+ if (!testBoundingSphere(group.getBound()))
+ return;
+
+ traverse(group);
+ addBoundingVolume(group);
+ }
+
+ virtual void apply(osg::Transform& transform)
+ { handleTransform(transform); }
+ virtual void apply(osg::Camera& camera)
+ {
+ if (camera.getRenderOrder() != osg::Camera::NESTED_RENDER)
+ return;
+ handleTransform(camera);
+ }
+ virtual void apply(osg::CameraView& transform)
+ { handleTransform(transform); }
+ virtual void apply(osg::MatrixTransform& transform)
+ { handleTransform(transform); }
+ virtual void apply(osg::PositionAttitudeTransform& transform)
+ { handleTransform(transform); }
+
+private:
+ void handleTransform(osg::Transform& transform)
+ {
+ if (&transform == _skipNode)
+ return;
+ // Hmm, may be this needs to be refined somehow ...
+ if (transform.getReferenceFrame() != osg::Transform::RELATIVE_RF)
+ return;
+
+ if (!testBoundingSphere(transform.getBound()))
+ return;
+
+ osg::Matrix inverseMatrix;
+ if (!transform.computeWorldToLocalMatrix(inverseMatrix, this))
+ return;
+ osg::Matrix matrix;
+ if (!transform.computeLocalToWorldMatrix(matrix, this))
+ return;
+
+ SGLineSegmentd lineSegment = _lineSegment;
+ bool haveHit = _haveHit;
+ const simgear::BVHMaterial* material = _material;
+
+ _haveHit = false;
+ _lineSegment = lineSegment.transform(SGMatrixd(inverseMatrix.ptr()));
+
+ addBoundingVolume(transform);
+ traverse(transform);
+
+ if (_haveHit) {
+ _lineSegment = _lineSegment.transform(SGMatrixd(matrix.ptr()));
+ } else {
+ _lineSegment = lineSegment;
+ _material = material;
+ _haveHit = haveHit;
+ }
+ }
+
+ simgear::BVHNode* getNodeBoundingVolume(osg::Node& node)
+ {
+ SGSceneUserData* userData = SGSceneUserData::getSceneUserData(&node);
+ if (!userData)
+ return 0;
+ return userData->getBVHNode();
+ }
+ void addBoundingVolume(osg::Node& node)
+ {
+ simgear::BVHNode* bvNode = getNodeBoundingVolume(node);
+ if (!bvNode)
+ return;
+
+ // Find ground intersection on the bvh nodes
+ simgear::BVHLineSegmentVisitor lineSegmentVisitor(_lineSegment,
+ 0/*startTime*/);
+ bvNode->accept(lineSegmentVisitor);
+ if (!lineSegmentVisitor.empty()) {
+ _lineSegment = lineSegmentVisitor.getLineSegment();
+ _material = lineSegmentVisitor.getMaterial();
+ _haveHit = true;
+ }
+ }
+
+ bool testBoundingSphere(const osg::BoundingSphere& bound) const
+ {
+ if (!bound.valid())
+ return false;
+
+ SGSphered sphere(toVec3d(toSG(bound._center)), bound._radius);
+ return intersects(_lineSegment, sphere);
+ }
+
+ SGLineSegmentd _lineSegment;
+ const osg::Node* _skipNode;
+
+ const simgear::BVHMaterial* _material;
+ bool _haveHit;
+};
+
// Scenery Management system
-FGScenery::FGScenery() :
- center(0, 0, 0)
+FGScenery::FGScenery()
{
SG_LOG( SG_TERRAIN, SG_INFO, "Initializing scenery subsystem" );
+ // keep reference to pager singleton, so it cannot be destroyed while FGScenery lives
+ _pager = FGScenery::getPagerSingleton();
}
-
-// Initialize the Scenery Management system
FGScenery::~FGScenery() {
}
+// Initialize the Scenery Management system
void FGScenery::init() {
// Scene graph root
scene_graph = new osg::Group;
aircraft_branch->setName( "Aircraft" );
scene_graph->addChild( aircraft_branch.get() );
- // Lighting
- gnd_lights_root = new osg::Group;
- gnd_lights_root->setName( "Ground Lighting Root" );
-
- vasi_lights_root = new osg::Group;
- vasi_lights_root->setName( "VASI/PAPI Lighting Root" );
-
- rwy_lights_root = new osg::Group;
- rwy_lights_root->setName( "Runway Lighting Root" );
-
- taxi_lights_root = new osg::Group;
- taxi_lights_root->setName( "Taxi Lighting Root" );
-
// Initials values needed by the draw-time object loader
- sgUserDataInit( globals->get_model_lib(), globals->get_fg_root(),
- globals->get_props(), globals->get_sim_time_sec() );
+ sgUserDataInit( globals->get_props() );
}
-void FGScenery::update(double dt) {
+void FGScenery::update(double dt)
+{
+ SG_UNUSED(dt);
+ // nothing here, don't call again
+ suspend();
}
void FGScenery::unbind() {
}
-void FGScenery::set_center( const SGVec3d& p ) {
- if (center == p)
- return;
- center = p;
- placement_list_type::iterator it = _placement_list.begin();
- while (it != _placement_list.end()) {
- (*it)->setSceneryCenter(center);
- ++it;
- }
-}
-
-void FGScenery::register_placement_transform(SGPlacementTransform *trans) {
- _placement_list.push_back(trans);
- trans->setSceneryCenter(center);
-}
-
-void FGScenery::unregister_placement_transform(SGPlacementTransform *trans) {
- placement_list_type::iterator it = _placement_list.begin();
- while (it != _placement_list.end()) {
- if ((*it) == trans) {
- it = _placement_list.erase(it);
- } else
- ++it;
- }
-}
-
bool
-FGScenery::get_elevation_m(double lat, double lon, double max_alt,
- double& alt, const SGMaterial** material,
- bool exact)
+FGScenery::get_cart_elevation_m(const SGVec3d& pos, double max_altoff,
+ double& alt,
+ const simgear::BVHMaterial** material,
+ const osg::Node* butNotFrom)
{
- SGGeod geod = SGGeod::fromDegM(lon, lat, max_alt);
- SGVec3d pos = SGVec3d::fromGeod(geod);
- return get_cart_elevation_m(pos, 0, alt, material, exact);
+ SGGeod geod = SGGeod::fromCart(pos);
+ geod.setElevationM(geod.getElevationM() + max_altoff);
+ return get_elevation_m(geod, alt, material, butNotFrom);
}
bool
-FGScenery::get_cart_elevation_m(const SGVec3d& pos, double max_altoff,
- double& alt, const SGMaterial** material,
- bool exact)
+FGScenery::get_elevation_m(const SGGeod& geod, double& alt,
+ const simgear::BVHMaterial** material,
+ const osg::Node* butNotFrom)
{
- if ( norm1(pos) < 1 )
- return false;
+ SGVec3d start = SGVec3d::fromGeod(geod);
- SGVec3d saved_center = center;
- bool replaced_center = false;
- if (exact) {
- if (30*30 < distSqr(pos, center)) {
- set_center( pos );
- replaced_center = true;
- }
- }
+ SGGeod geodEnd = geod;
+ geodEnd.setElevationM(SGMiscd::min(geod.getElevationM() - 10, -10000));
+ SGVec3d end = SGVec3d::fromGeod(geodEnd);
-
- SGVec3d start = pos + max_altoff*normalize(pos) - center;
- SGVec3d end = - center;
-
- osgUtil::IntersectVisitor intersectVisitor;
+ FGSceneryIntersect intersectVisitor(SGLineSegmentd(start, end), butNotFrom);
intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
- osg::ref_ptr<osg::LineSegment> lineSegment;
- lineSegment = new osg::LineSegment(start.osg(), end.osg());
- intersectVisitor.addLineSegment(lineSegment.get());
get_scene_graph()->accept(intersectVisitor);
- bool hits = intersectVisitor.hits();
- if (hits) {
- int nHits = intersectVisitor.getNumHits(lineSegment.get());
- alt = -SGLimitsd::max();
- for (int i = 0; i < nHits; ++i) {
- const osgUtil::Hit& hit
- = intersectVisitor.getHitList(lineSegment.get())[i];
- SGVec3d point;
- point.osg() = hit.getWorldIntersectPoint();
- point += center;
- SGGeod geod = SGGeod::fromCart(point);
- double elevation = geod.getElevationM();
- if (alt < elevation) {
- alt = elevation;
- if (material)
- *material = globals->get_matlib()->findMaterial(hit.getGeode());
- }
- }
- }
- if (replaced_center)
- set_center( saved_center );
-
- return hits;
-}
+ if (!intersectVisitor.getHaveHit())
+ return false;
-static const osgUtil::Hit*
-getNearestHit(const osgUtil::IntersectVisitor::HitList& hitList,
- const SGVec3d& start)
-{
- const osgUtil::Hit* nearestHit = 0;
- double dist = SGLimitsd::max();
- osgUtil::IntersectVisitor::HitList::const_iterator hit;
- for (hit = hitList.begin(); hit != hitList.end(); ++hit) {
- SGVec3d point(hit->getWorldIntersectPoint());
- double newdist = length(start - point);
- if (newdist < dist) {
- dist = newdist;
- nearestHit = &*hit;
- }
- }
+ geodEnd = SGGeod::fromCart(intersectVisitor.getLineSegment().getEnd());
+ alt = geodEnd.getElevationM();
+ if (material)
+ *material = intersectVisitor.getMaterial();
- return nearestHit;
+ return true;
}
bool
FGScenery::get_cart_ground_intersection(const SGVec3d& pos, const SGVec3d& dir,
- SGVec3d& nearestHit, bool exact)
+ SGVec3d& nearestHit,
+ const osg::Node* butNotFrom)
{
// We assume that starting positions in the center of the earth are invalid
if ( norm1(pos) < 1 )
return false;
- // Well that 'exactness' is somehow problematic, but makes at least sure
- // that we don't compute that with a cenery center at the other side of
- // the world ...
- SGVec3d saved_center = center;
- bool replaced_center = false;
- if (exact) {
- if (30*30 < distSqr(pos, center)) {
- set_center( pos );
- replaced_center = true;
- }
- }
-
// Make really sure the direction is normalized, is really cheap compared to
// computation of ground intersection.
- SGVec3d start = pos - center;
+ SGVec3d start = pos;
SGVec3d end = start + 1e5*normalize(dir); // FIXME visibility ???
-
- osgUtil::IntersectVisitor intersectVisitor;
+
+ FGSceneryIntersect intersectVisitor(SGLineSegmentd(start, end), butNotFrom);
intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
- osg::ref_ptr<osg::LineSegment> lineSegment;
- lineSegment = new osg::LineSegment(start.osg(), end.osg());
- intersectVisitor.addLineSegment(lineSegment.get());
get_scene_graph()->accept(intersectVisitor);
- bool hits = intersectVisitor.hits();
- if (hits) {
- int nHits = intersectVisitor.getNumHits(lineSegment.get());
- double dist = SGLimitsd::max();
- for (int i = 0; i < nHits; ++i) {
- const osgUtil::Hit& hit
- = intersectVisitor.getHitList(lineSegment.get())[i];
- SGVec3d point;
- point.osg() = hit.getWorldIntersectPoint();
- double newdist = length(start - point);
- if (newdist < dist) {
- dist = newdist;
- nearestHit = point + center;
- }
- }
- }
- if (replaced_center)
- set_center( saved_center );
+ if (!intersectVisitor.getHaveHit())
+ return false;
- return hits;
+ nearestHit = intersectVisitor.getLineSegment().getEnd();
+ return true;
}
-void
-FGScenery::pick(const SGVec3d& pos, const SGVec3d& dir,
- std::vector<SGSceneryPick>& pickList)
+bool FGScenery::scenery_available(const SGGeod& position, double range_m)
{
- pickList.clear();
-
- // Make really sure the direction is normalized, is really cheap compared to
- // computation of ground intersection.
- SGVec3d start = pos - center;
- SGVec3d end = start + 1e5*normalize(dir); // FIXME visibility ???
-
- osgUtil::IntersectVisitor intersectVisitor;
-// osgUtil::PickVisitor intersectVisitor;
-// intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
- osg::ref_ptr<osg::LineSegment> lineSegment;
- lineSegment = new osg::LineSegment(start.osg(), end.osg());
- intersectVisitor.addLineSegment(lineSegment.get());
- get_scene_graph()->accept(intersectVisitor);
- if (!intersectVisitor.hits())
- return;
-
- // collect all interaction callbacks on the pick ray.
- // They get stored in the pickCallbacks list where they are sorted back
- // to front and croasest to finest wrt the scenery node they are attached to
- osgUtil::IntersectVisitor::HitList::const_iterator hi;
- for (hi = intersectVisitor.getHitList(lineSegment.get()).begin();
- hi != intersectVisitor.getHitList(lineSegment.get()).end();
- ++hi) {
-
- // ok, go back the nodes and ask for intersection callbacks,
- // execute them in top down order
- const osg::NodePath& np = hi->getNodePath();
- osg::NodePath::const_reverse_iterator npi;
- for (npi = np.rbegin(); npi != np.rend(); ++npi) {
- SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
- if (!ud)
- continue;
- SGPickCallback* pickCallback = ud->getPickCallback();
- if (!pickCallback)
- continue;
-
- SGSceneryPick sceneryPick;
- sceneryPick.info.wgs84 = center + SGVec3d(hi->getWorldIntersectPoint());
- sceneryPick.info.local = SGVec3d(hi->getLocalIntersectPoint());
- sceneryPick.callback = pickCallback;
- pickList.push_back(sceneryPick);
- }
+ if(globals->get_tile_mgr()->schedule_scenery(position, range_m, 0.0))
+ {
+ double elev;
+ if (!get_elevation_m(SGGeod::fromGeodM(position, SG_MAX_ELEVATION_M), elev, 0, 0))
+ return false;
+ SGVec3f p = SGVec3f::fromGeod(SGGeod::fromGeodM(position, elev));
+ osg::FrameStamp* framestamp
+ = globals->get_renderer()->getViewer()->getFrameStamp();
+ simgear::CheckSceneryVisitor csnv(_pager, toOsg(p), range_m, framestamp);
+ // currently the PagedLODs will not be loaded by the DatabasePager
+ // while the splashscreen is there, so CheckSceneryVisitor force-loads
+ // missing objects in the main thread
+ get_scene_graph()->accept(csnv);
+ if(!csnv.isLoaded())
+ return false;
+ return true;
}
+ return false;
}
+
+SceneryPager* FGScenery::getPagerSingleton()
+{
+ static osg::ref_ptr<SceneryPager> pager = new SceneryPager;
+ return pager.get();
+}
+
projects / flightgear.git / blobdiff