//
// Written by Curtis Olson, started May 1997.
//
-// Copyright (C) 1997 Curtis L. Olson - curt@infoplane.com
+// Copyright (C) 1997 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
# include <config.h>
#endif
-#ifdef HAVE_WINDOWS_H
-# include <windows.h>
-#endif
-
-#include <GL/glut.h>
-#include <simgear/xgl.h>
-
#include <stdio.h>
#include <string.h>
-#include <simgear/logstream.hxx>
+#include <osgUtil/IntersectVisitor>
+
+#include <simgear/constants.h>
+#include <simgear/debug/logstream.hxx>
+#include <simgear/scene/tgdb/userdata.hxx>
+#include <simgear/scene/material/matlib.hxx>
+#include <simgear/scene/util/SGNodeMasks.hxx>
+#include <simgear/scene/util/SGSceneUserData.hxx>
+#include <simgear/scene/model/CheckSceneryVisitor.hxx>
-#include <Main/options.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)
+ {
+ // 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;
+ }
+};
+
+// Scenery Management system
+FGScenery::FGScenery()
+{
+ SG_LOG( SG_TERRAIN, SG_INFO, "Initializing scenery subsystem" );
+}
-// Temporary hack until we get a better texture management system running
-GLint area_texture;
+FGScenery::~FGScenery() {
+}
-// Shared structure to hold current scenery parameters
-struct fgSCENERY scenery;
+// Initialize the Scenery Management system
+void FGScenery::init() {
+ // Scene graph root
+ scene_graph = new osg::Group;
+ scene_graph->setName( "Scene" );
+
+ // Terrain branch
+ terrain_branch = new osg::Group;
+ terrain_branch->setName( "Terrain" );
+ scene_graph->addChild( terrain_branch.get() );
+ SGSceneUserData* userData;
+ userData = SGSceneUserData::getOrCreateSceneUserData(terrain_branch.get());
+ userData->setPickCallback(new FGGroundPickCallback);
+
+ models_branch = new osg::Group;
+ models_branch->setName( "Models" );
+ scene_graph->addChild( models_branch.get() );
+
+ aircraft_branch = new osg::Group;
+ aircraft_branch->setName( "Aircraft" );
+ scene_graph->addChild( aircraft_branch.get() );
+
+ // Initials values needed by the draw-time object loader
+ sgUserDataInit( globals->get_props() );
+}
-// Initialize the Scenery Management system
-int fgSceneryInit( void ) {
- fgOPTIONS *o;
- // char path[1024], fgpath[1024];
- // GLubyte *texbuf;
- // int width, height;
+void FGScenery::update(double dt) {
+}
- o = ¤t_options;
- FG_LOG( FG_TERRAIN, FG_INFO, "Initializing scenery subsystem" );
+void FGScenery::bind() {
+}
- scenery.cur_elev = -9999;
- return(1);
+void FGScenery::unbind() {
}
+bool
+FGScenery::get_cart_elevation_m(const SGVec3d& pos, double max_altoff,
+ double& alt, const SGMaterial** material,
+ const osg::Node* butNotFrom)
+{
+ SGGeod geod = SGGeod::fromCart(pos);
+ geod.setElevationM(geod.getElevationM() + max_altoff);
+ return get_elevation_m(geod, alt, material, butNotFrom);
+}
-// Tell the scenery manager where we are so it can load the proper data, and
-// build the proper structures.
-void fgSceneryUpdate(double lon, double lat, double elev) {
- // does nothing;
+bool
+FGScenery::get_elevation_m(const SGGeod& geod, double& alt,
+ const SGMaterial** material,
+ const osg::Node* butNotFrom)
+{
+ SGVec3d start = SGVec3d::fromGeod(geod);
+
+ SGGeod geodEnd = geod;
+ geodEnd.setElevationM(SGMiscd::min(geod.getElevationM() - 10, -10000));
+ SGVec3d end = SGVec3d::fromGeod(geodEnd);
+
+ osgUtil::IntersectVisitor intersectVisitor;
+ intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
+ osg::ref_ptr<osg::LineSegment> lineSegment;
+ lineSegment = new osg::LineSegment(toOsg(start), toOsg(end));
+ intersectVisitor.addLineSegment(lineSegment.get());
+ get_scene_graph()->accept(intersectVisitor);
+ bool hits = false;
+ if (intersectVisitor.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];
+ if (butNotFrom &&
+ std::find(hit.getNodePath().begin(), hit.getNodePath().end(),
+ butNotFrom) != hit.getNodePath().end())
+ continue;
+
+ // We might need the double variant of the intersection point.
+ // Thus we cannot use the float variant delivered by
+ // hit.getWorldIntersectPoint() but we have to redo that with osg::Vec3d.
+ osg::Vec3d point = hit.getLocalIntersectPoint();
+ if (hit.getMatrix())
+ point = point*(*hit.getMatrix());
+ SGGeod geod = SGGeod::fromCart(toSG(point));
+ double elevation = geod.getElevationM();
+ if (alt < elevation) {
+ alt = elevation;
+ hits = true;
+ if (material)
+ *material = SGMaterialLib::findMaterial(hit.getGeode());
+ }
+ }
+ }
+
+ return hits;
}
+bool
+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 ( norm1(pos) < 1 )
+ return false;
+
+ // Make really sure the direction is normalized, is really cheap compared to
+ // computation of ground intersection.
+ SGVec3d start = pos;
+ SGVec3d end = start + 1e5*normalize(dir); // FIXME visibility ???
+
+ osgUtil::IntersectVisitor intersectVisitor;
+ intersectVisitor.setTraversalMask(SG_NODEMASK_TERRAIN_BIT);
+ osg::ref_ptr<osg::LineSegment> lineSegment;
+ lineSegment = new osg::LineSegment(toOsg(start), toOsg(end));
+ intersectVisitor.addLineSegment(lineSegment.get());
+ get_scene_graph()->accept(intersectVisitor);
+ bool hits = false;
+ if (intersectVisitor.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];
+ if (butNotFrom &&
+ std::find(hit.getNodePath().begin(), hit.getNodePath().end(),
+ butNotFrom) != hit.getNodePath().end())
+ continue;
+ // We might need the double variant of the intersection point.
+ // Thus we cannot use the float variant delivered by
+ // hit.getWorldIntersectPoint() but we have to redo that with osg::Vec3d.
+ osg::Vec3d point = hit.getLocalIntersectPoint();
+ if (hit.getMatrix())
+ point = point*(*hit.getMatrix());
+ double newdist = length(start - toSG(point));
+ if (newdist < dist) {
+ dist = newdist;
+ nearestHit = toSG(point);
+ hits = true;
+ }
+ }
+ }
+
+ return hits;
+}
-// Render out the current scene
-void fgSceneryRender( void ) {
+bool FGScenery::scenery_available(const SGGeod& position, double range_m)
+{
+ if(globals->get_tile_mgr()->scenery_available(position, range_m))
+ {
+ 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));
+ simgear::CheckSceneryVisitor csnv(getPagerSingleton(), toOsg(p), range_m);
+ // 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