#include <stdio.h>
#include <string.h>
+#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 "hitlist.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)
+ {
+ // only on left mouse button
+ if (button != 0)
+ return false;
+
+ SGGeod geod = SGGeod::fromCart(info.wgs84);
+ SG_LOG( SG_TERRAIN, SG_INFO, "Got ground pick at " << geod );
+
+ SGPropertyNode *c = fgGetNode("/sim/input/click", true);
+ c->setDoubleValue("longitude-deg", geod.getLongitudeDeg());
+ c->setDoubleValue("latitude-deg", geod.getLatitudeDeg());
+ c->setDoubleValue("elevation-m", geod.getElevationM());
+ c->setDoubleValue("elevation-ft", geod.getElevationFt());
+ fgSetBool("/sim/signals/click", 1);
+
+ return true;
+ }
+};
+
+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() {
+FGScenery::FGScenery()
+{
SG_LOG( SG_TERRAIN, SG_INFO, "Initializing scenery subsystem" );
-
- center = Point3D(0.0);
+ // 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 ssgRoot;
+ scene_graph = new osg::Group;
scene_graph->setName( "Scene" );
// Terrain branch
- terrain_branch = new ssgBranch;
+ terrain_branch = new osg::Group;
terrain_branch->setName( "Terrain" );
- scene_graph->addKid( terrain_branch );
+ scene_graph->addChild( terrain_branch.get() );
+ SGSceneUserData* userData;
+ userData = SGSceneUserData::getOrCreateSceneUserData(terrain_branch.get());
+ userData->setPickCallback(new FGGroundPickCallback);
- models_branch = new ssgBranch;
+ models_branch = new osg::Group;
models_branch->setName( "Models" );
- scene_graph->addKid( models_branch );
+ scene_graph->addChild( models_branch.get() );
- aircraft_branch = new ssgBranch;
+ aircraft_branch = new osg::Group;
aircraft_branch->setName( "Aircraft" );
- scene_graph->addKid( aircraft_branch );
-
- // Lighting
- gnd_lights_root = new ssgRoot;
- gnd_lights_root->setName( "Ground Lighting Root" );
-
- vasi_lights_root = new ssgRoot;
- vasi_lights_root->setName( "VASI/PAPI Lighting Root" );
-
- rwy_lights_root = new ssgRoot;
- rwy_lights_root->setName( "Runway Lighting Root" );
-
- taxi_lights_root = new ssgRoot;
- taxi_lights_root->setName( "Taxi Lighting Root" );
+ scene_graph->addChild( aircraft_branch.get() );
// 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 Point3D& p ) {
- center = p;
- sgdVec3 c;
- sgdSetVec3(c, p.x(), p.y(), p.z());
- placement_list_type::iterator it = _placement_list.begin();
- while (it != _placement_list.end()) {
- (*it)->setSceneryCenter(c);
- ++it;
- }
-}
-
-void FGScenery::register_placement_transform(ssgPlacementTransform *trans) {
- _placement_list.push_back(trans);
- sgdVec3 c;
- sgdSetVec3(c, center.x(), center.y(), center.z());
- trans->setSceneryCenter(c);
-}
-
-void FGScenery::unregister_placement_transform(ssgPlacementTransform *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, bool exact)
+FGScenery::get_cart_elevation_m(const SGVec3d& pos, double max_altoff,
+ double& alt,
+ const simgear::BVHMaterial** material,
+ const osg::Node* butNotFrom)
{
-// std::cout << __PRETTY_FUNCTION__ << " "
-// << lat << " "
-// << lon << " "
-// << max_alt
-// << std::endl;
- sgdVec3 pos;
- sgGeodToCart(lat*SG_DEGREES_TO_RADIANS, lon*SG_DEGREES_TO_RADIANS,
- max_alt, pos);
- return get_cart_elevation_m(pos, 0, alt, 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 sgdVec3& pos, double max_altoff,
- double& alt, bool exact)
+FGScenery::get_elevation_m(const SGGeod& geod, double& alt,
+ const simgear::BVHMaterial** material,
+ const osg::Node* butNotFrom)
{
- Point3D saved_center = center;
- bool replaced_center = false;
- if (exact) {
- Point3D ppos(pos[0], pos[1], pos[2]);
- if (30.0*30.0 < ppos.distance3Dsquared(center)) {
- set_center( ppos );
- replaced_center = true;
- }
- }
+ SGVec3d start = SGVec3d::fromGeod(geod);
- // overridden with actual values if a terrain intersection is
- // found
- double hit_radius = 0.0;
- sgdVec3 hit_normal = { 0.0, 0.0, 0.0 };
-
- bool hit = false;
- if ( fabs(pos[0]) > 1.0 || fabs(pos[1]) > 1.0 || fabs(pos[2]) > 1.0 ) {
- sgdVec3 sc;
- sgdSetVec3(sc, center[0], center[1], center[2]);
-
- sgdVec3 ncpos;
- sgdCopyVec3(ncpos, pos);
-
- FGHitList hit_list;
-
- // scenery center has been properly defined so any hit should
- // be valid (and not just luck)
- hit = fgCurrentElev(ncpos, max_altoff+sgdLengthVec3(pos),
- sc, (ssgTransform*)get_scene_graph(),
- &hit_list, &alt, &hit_radius, hit_normal);
- }
+ SGGeod geodEnd = geod;
+ geodEnd.setElevationM(SGMiscd::min(geod.getElevationM() - 10, -10000));
+ SGVec3d end = SGVec3d::fromGeod(geodEnd);
- if (replaced_center)
- set_center( saved_center );
-
- return hit;
-}
+ FGSceneryIntersect intersectVisitor(SGLineSegmentd(start, end), butNotFrom);
+ intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
+ get_scene_graph()->accept(intersectVisitor);
+
+ if (!intersectVisitor.getHaveHit())
+ return false;
+ geodEnd = SGGeod::fromCart(intersectVisitor.getLineSegment().getEnd());
+ alt = geodEnd.getElevationM();
+ if (material)
+ *material = intersectVisitor.getMaterial();
+
+ return true;
+}
bool
-FGScenery::get_cart_ground_intersection(const sgdVec3& pos,
- const sgdVec3& dir,
- sgdVec3& nearestHit, bool exact)
+FGScenery::get_cart_ground_intersection(const SGVec3d& pos, const SGVec3d& dir,
+ SGVec3d& nearestHit,
+ const osg::Node* butNotFrom)
{
// We assume that starting positions in the center of the earth are invalid
- if ( fabs(pos[0]) < 1.0 && fabs(pos[1]) < 1.0 && fabs(pos[2]) < 1.0 )
+ 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 ...
- Point3D saved_center = center;
- bool replaced_center = false;
- if (exact) {
- Point3D ppos(pos[0], pos[1], pos[2]);
- if (30.0*30.0 < ppos.distance3Dsquared(center)) {
- set_center( ppos );
- replaced_center = true;
- }
- }
-
- // Not yet found any hit ...
- bool result = false;
-
// Make really sure the direction is normalized, is really cheap compared to
// computation of ground intersection.
- sgdVec3 normalizedDir;
- sgdCopyVec3(normalizedDir, dir);
- sgdNormaliseVec3(normalizedDir);
-
- sgdVec3 sceneryCenter;
- sgdSetVec3(sceneryCenter, center[0], center[1], center[2]);
- sgdVec3 relativePos;
- sgdSubVec3(relativePos, pos, sceneryCenter);
-
- // At the moment only intersection with the terrain?
- FGHitList hit_list;
- hit_list.Intersect(globals->get_scenery()->get_terrain_branch(),
- relativePos, normalizedDir);
-
- double dist = DBL_MAX;
- int hitcount = hit_list.num_hits();
- for (int i = 0; i < hitcount; ++i) {
- // Check for the nearest hit
- sgdVec3 diff;
- sgdSubVec3(diff, hit_list.get_point(i), relativePos);
-
- // We only want hits in front of us ...
- if (sgdScalarProductVec3(normalizedDir, diff) < 0)
- continue;
-
- // find the nearest hit
- double nDist = sgdScalarProductVec3(diff, diff);
- if (dist < nDist)
- continue;
-
- // Store the hit point
- dist = nDist;
- sgdAddVec3(nearestHit, hit_list.get_point(i), sceneryCenter);
- result = true;
- }
+ SGVec3d start = pos;
+ SGVec3d end = start + 1e5*normalize(dir); // FIXME visibility ???
+
+ FGSceneryIntersect intersectVisitor(SGLineSegmentd(start, end), butNotFrom);
+ intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
+ get_scene_graph()->accept(intersectVisitor);
- if (replaced_center)
- set_center( saved_center );
+ if (!intersectVisitor.getHaveHit())
+ return false;
- return result;
+ nearestHit = intersectVisitor.getLineSegment().getEnd();
+ return true;
+}
+
+bool FGScenery::scenery_available(const SGGeod& position, double range_m)
+{
+ 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