// groundradar.cxx - Background layer for the ATC radar.
//
-// Written by Csaba Halasz.
+// Copyright (C) 2007 Csaba Halasz.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
-//
+//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# include "config.h"
#endif
+#include <cassert>
+
#include <osg/Node>
#include <osg/Geode>
#include <osg/Geometry>
#include <osgText/Text>
#include <osgDB/Registry>
#include <osgDB/ReaderWriter>
+#include <osgUtil/Tessellator>
#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
#include <Cockpit/panel.hxx>
#include <Airports/simple.hxx>
#include <Airports/runways.hxx>
+#include <Airports/pavement.hxx>
#include <simgear/math/sg_geodesy.hxx>
+#include <simgear/math/beziercurve.hxx>
#include "groundradar.hxx"
-static const char* airport_node_name = "/sim/tower/airport-id";
-static const char* texture_name = "Aircraft/Instruments/Textures/od_groundradar.rgb";
-static const char* radar_node_name = "/instrumentation/radar/range";
+static const char* airport_source_node_name = "airport-id-source";
+static const char* default_airport_node_name = "/sim/airport/closest-airport-id";
+static const char* texture_node_name = "texture-name";
+static const char* default_texture_name = "Aircraft/Instruments/Textures/od_groundradar.rgb";
+static const char* range_source_node_name = "range-source";
+static const char* default_range_node_name = "/instrumentation/radar/range";
struct SingleFrameCallback : public osg::Camera::DrawCallback
{
GroundRadar::GroundRadar(SGPropertyNode *node)
{
- _airport_node = fgGetNode(airport_node_name, true);
- _radar_node = fgGetNode(radar_node_name, true);
- createTexture();
+ _airport_node = fgGetNode(node->getStringValue(airport_source_node_name, default_airport_node_name), true);
+ _range_node = fgGetNode(node->getStringValue(range_source_node_name, default_range_node_name), true);
+ createTexture(node->getStringValue(texture_node_name, default_texture_name));
updateTexture();
_airport_node->addChangeListener(this);
- _radar_node->addChangeListener(this);
+ _range_node->addChangeListener(this);
}
GroundRadar::~GroundRadar()
{
_airport_node->removeChangeListener(this);
- _radar_node->removeChangeListener(this);
+ _range_node->removeChangeListener(this);
}
void GroundRadar::valueChanged(SGPropertyNode*)
{
- updateTexture();
+ updateTexture();
}
inline static osg::Vec3 fromPolar(double fi, double r)
return osg::Vec3(sin(fi * SGD_DEGREES_TO_RADIANS) * r, cos(fi * SGD_DEGREES_TO_RADIANS) * r, 0);
}
-void GroundRadar::createTexture()
-{
- setSize(512);
+void GroundRadar::createTexture(const char* texture_name)
+{
+ setSize(TextureHalfSize + TextureHalfSize);
allocRT();
-
- osg::Vec4Array* colors = new osg::Vec4Array;
- colors->push_back(osg::Vec4(0.0f,0.5f,0.0f,1.0f));
- colors->push_back(osg::Vec4(0.0f,0.5f,0.5f,1.0f));
-
- _geom = new osg::Geometry();
- _geom->setColorArray(colors);
- _geom->setColorBinding(osg::Geometry::BIND_PER_PRIMITIVE_SET);
- _geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS, 0, 0));
- _geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS, 0, 0));
-
- osg::Geode* geode = new osg::Geode();
- osg::StateSet* stateset = geode->getOrCreateStateSet();
+
+ _geode = new osg::Geode();
+ osg::StateSet* stateset = _geode->getOrCreateStateSet();
stateset->setMode(GL_BLEND, osg::StateAttribute::OFF);
- geode->addDrawable(_geom.get());
- osg::Camera* camera = getCamera();
+ osg::Vec4Array* taxi_color = new osg::Vec4Array;
+ taxi_color->push_back(osg::Vec4(0.0f, 0.5f, 0.0f, 1.0f));
+ osg::Vec4Array* rwy_color = new osg::Vec4Array;
+ rwy_color->push_back(osg::Vec4(0.0f, 0.5f, 0.5f, 1.0f));
+
+ osg::Geometry *taxi_geom = new osg::Geometry();
+ taxi_geom->setColorArray(taxi_color);
+ taxi_geom->setColorBinding(osg::Geometry::BIND_OVERALL);
+ taxi_geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS, 0, 0)); // Taxiways
+ _geode->addDrawable(taxi_geom);
+
+ osg::Geometry *pvt_geom = new osg::Geometry();
+ pvt_geom->setColorArray(taxi_color);
+ pvt_geom->setColorBinding(osg::Geometry::BIND_OVERALL);
+ // no primitive set for the moment. It needs tessellation
+ _geode->addDrawable(pvt_geom);
+
+ osg::Geometry *rwy_geom = new osg::Geometry();
+ rwy_geom->setColorArray(rwy_color);
+ rwy_geom->setColorBinding(osg::Geometry::BIND_OVERALL);
+ rwy_geom->addPrimitiveSet(new osg::DrawArrays(osg::PrimitiveSet::QUADS, 0, 0)); // Runways
+ _geode->addDrawable(rwy_geom);
+
+ osg::Camera* camera = getCamera();
camera->setPostDrawCallback(new SingleFrameCallback());
- camera->addChild(geode);
+ camera->addChild(_geode.get());
camera->setNodeMask(0);
camera->setProjectionMatrixAsOrtho2D(0, getTexture()->getTextureWidth(), 0, getTexture()->getTextureHeight());
FGTextureManager::addTexture(texture_name, getTexture());
}
+void GroundRadar::addRunwayVertices(const FGRunwayBase* aRunway, double aTowerLat, double aTowerLon, double aScale, osg::Vec3Array* aVertices)
+{
+ double az1, az2, dist_m;
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, aRunway->latitude(), aRunway->longitude(), &az1, &az2, &dist_m);
+
+ osg::Vec3 center = fromPolar(az1, dist_m * aScale) + osg::Vec3(TextureHalfSize, TextureHalfSize, 0);
+ osg::Vec3 leftcenter = fromPolar(aRunway->headingDeg(), aRunway->lengthM() * aScale / 2) + center;
+ osg::Vec3 lefttop = fromPolar(aRunway->headingDeg() - 90, aRunway->widthM() * aScale / 2) + leftcenter;
+ osg::Vec3 leftbottom = leftcenter * 2 - lefttop;
+ osg::Vec3 rightbottom = center * 2 - lefttop;
+ osg::Vec3 righttop = center * 2 - leftbottom;
+
+ aVertices->push_back(lefttop);
+ aVertices->push_back(leftbottom);
+ aVertices->push_back(rightbottom);
+ aVertices->push_back(righttop);
+}
+
+osg::Geometry *GroundRadar::addPavementGeometry(const FGPavement* aPavement, double aTowerLat, double aTowerLon, double aScale)
+{
+
+ osg::ref_ptr<osgUtil::Tessellator> tess = new osgUtil::Tessellator;
+ osg::ref_ptr<osg::Geometry> polygon = new osg::Geometry;
+ osg::ref_ptr<osg::Vec3Array> pts = new osg::Vec3Array;
+
+ double az1, az2, dist_m;
+ const FGPavement::NodeList &nodeLst = aPavement->getNodeList();
+ FGPavement::NodeList::const_iterator it = nodeLst.begin(),
+ loopBegin = it;
+ while ( it != nodeLst.end() )
+ {
+ bool close = (*it)->mClose;
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, (*it)->mPos.getLatitudeDeg(), (*it)->mPos.getLongitudeDeg(), &az1, &az2, &dist_m);
+ osg::Vec3 p1 = fromPolar(az1, dist_m * aScale) + osg::Vec3(TextureHalfSize, TextureHalfSize, 0);
+ const FGPavement::BezierNode *bn = dynamic_cast<const FGPavement::BezierNode *>( it->ptr() );
+ if ( bn != 0 )
+ {
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, bn->mControl.getLatitudeDeg(), bn->mControl.getLongitudeDeg(), &az1, &az2, &dist_m);
+ osg::Vec3 p2 = fromPolar(az1, dist_m * aScale) + osg::Vec3(TextureHalfSize, TextureHalfSize, 0),
+ p3;
+ ++it;
+ if ( it == nodeLst.end() || close )
+ {
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, (*loopBegin)->mPos.getLatitudeDeg(), (*loopBegin)->mPos.getLongitudeDeg(), &az1, &az2, &dist_m);
+ }
+ else
+ {
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, (*it)->mPos.getLatitudeDeg(), (*it)->mPos.getLongitudeDeg(), &az1, &az2, &dist_m);
+ }
+ p3 = fromPolar(az1, dist_m * aScale) + osg::Vec3(TextureHalfSize, TextureHalfSize, 0);
+ simgear::BezierCurve<osg::Vec3> bCurv( p1, p2, p3 );
+ simgear::BezierCurve<osg::Vec3>::PointList &ptList = bCurv.pointList();
+ for ( simgear::BezierCurve<osg::Vec3>::PointList::iterator ii = ptList.begin(); ii != ptList.end(); ++ii )
+ {
+ pts->push_back( *ii );
+ }
+ pts->pop_back(); // Last point belongs to next segment
+ }
+ else
+ {
+ pts->push_back( p1 );
+ ++it;
+ }
+
+ if ( close ) // One loop for the moment
+ break;
+ }
+ geo_inverse_wgs_84(aTowerLat, aTowerLon, (*loopBegin)->mPos.getLatitudeDeg(), (*loopBegin)->mPos.getLongitudeDeg(), &az1, &az2, &dist_m);
+ osg::Vec3 p1 = fromPolar(az1, dist_m * aScale) + osg::Vec3(TextureHalfSize, TextureHalfSize, 0);
+ pts->push_back( p1 );
+ polygon->setVertexArray( pts.get() );
+
+ polygon->addPrimitiveSet( new osg::DrawArrays( osg::PrimitiveSet::POLYGON, 0, pts->size() ) );
+
+ tess->setTessellationType( osgUtil::Tessellator::TESS_TYPE_GEOMETRY );
+ tess->setBoundaryOnly( false );
+ tess->setWindingType( osgUtil::Tessellator::TESS_WINDING_ODD );
+ tess->retessellatePolygons( *polygon );
+ return polygon.release();
+}
+
void GroundRadar::updateTexture()
{
osg::ref_ptr<osg::Vec3Array> rwy_vertices = new osg::Vec3Array;
osg::ref_ptr<osg::Vec3Array> taxi_vertices = new osg::Vec3Array;
+ osg::ref_ptr<osg::Vec3Array> pvt_vertices = new osg::Vec3Array;
const string airport_name = _airport_node->getStringValue();
- FGRunwayList* runways = globals->get_runways();
const FGAirport* airport = fgFindAirportID(airport_name);
+ if (airport == 0)
+ return;
+
const SGGeod& tower_location = airport->getTowerLocation();
const double tower_lat = tower_location.getLatitudeDeg();
const double tower_lon = tower_location.getLongitudeDeg();
- double scale = SG_METER_TO_NM * 200 / _radar_node->getDoubleValue();
+ double scale = SG_METER_TO_NM * 200 / _range_node->getDoubleValue();
+
+ const FGAirport* apt = fgFindAirportID(airport_name);
+ assert(apt);
- for(FGRunway runway = runways->search(airport_name); runway._id == airport_name; runway = runways->next())
+ for (unsigned int i=0; i<apt->numTaxiways(); ++i)
{
- double az1, az2, dist_m;
- geo_inverse_wgs_84(tower_lat, tower_lon, runway._lat, runway._lon, &az1, &az2, &dist_m);
-
- osg::Vec3 center = fromPolar(az1, dist_m * scale) + osg::Vec3(256, 256, 0);
- osg::Vec3 leftcenter = fromPolar(runway._heading, runway._length * SG_FEET_TO_METER * scale / 2) + center;
- osg::Vec3 lefttop = fromPolar(runway._heading - 90, runway._width * SG_FEET_TO_METER * scale / 2) + leftcenter;
- osg::Vec3 leftbottom = leftcenter * 2 - lefttop;
- osg::Vec3 rightbottom = center * 2 - lefttop;
- osg::Vec3 righttop = center * 2 - leftbottom;
-
- osg::Vec3Array* vertices = runway._rwy_no[0] == 'x' ? taxi_vertices.get() : rwy_vertices.get();
- vertices->push_back(lefttop);
- vertices->push_back(leftbottom);
- vertices->push_back(rightbottom);
- vertices->push_back(righttop);
+ FGTaxiway* txwy(apt->getTaxiwayByIndex(i));
+ addRunwayVertices(txwy, tower_lat, tower_lon, scale, taxi_vertices.get());
}
-
- osg::Vec3Array* vertices = new osg::Vec3Array(*taxi_vertices.get());
- vertices->insert(vertices->end(), rwy_vertices->begin(), rwy_vertices->end());
- _geom->setVertexArray(vertices);
- osg::DrawArrays* taxi = dynamic_cast<osg::DrawArrays*>(_geom->getPrimitiveSet(0));
- osg::DrawArrays* rwy = dynamic_cast<osg::DrawArrays*>(_geom->getPrimitiveSet(1));
+ osg::Geometry *taxi_geom = dynamic_cast<osg::Geometry *>(_geode->getDrawable(0));
+ taxi_geom->setVertexArray(taxi_vertices.get());
+ osg::DrawArrays* taxi = dynamic_cast<osg::DrawArrays*>(taxi_geom->getPrimitiveSet(0));
taxi->setCount(taxi_vertices->size());
- rwy->setFirst(taxi_vertices->size());
+
+ osg::Geometry *pvt_geom = dynamic_cast<osg::Geometry *>(_geode->getDrawable(1));
+ osg::Geometry::PrimitiveSetList &pvt_prim_list = pvt_geom->getPrimitiveSetList();
+ pvt_prim_list.clear();
+ for (unsigned int i=0; i<apt->numPavements(); ++i)
+ {
+ FGPavement* pvt(apt->getPavementByIndex(i));
+ osg::ref_ptr<osg::Geometry> geom = addPavementGeometry(pvt, tower_lat, tower_lon, scale);
+ osg::Geometry::PrimitiveSetList &prim_list = geom->getPrimitiveSetList();
+ osg::Vec3Array *vertices = dynamic_cast<osg::Vec3Array *>(geom->getVertexArray());
+ size_t before = pvt_vertices->size(),
+ count = vertices->size();
+ for (size_t i = 0; i < count; ++i )
+ {
+ pvt_vertices->push_back( (*vertices)[i] );
+ }
+ for (osg::Geometry::PrimitiveSetList::iterator ii = prim_list.begin(); ii != prim_list.end(); ++ii )
+ {
+ osg::DrawArrays *da;
+ osg::DrawElementsUByte *de1;
+ osg::DrawElementsUShort *de2;
+ osg::DrawElementsUInt *de3;
+ if ((da = dynamic_cast<osg::DrawArrays *>(ii->get())) != 0)
+ {
+ osg::DrawArrays *ps = new osg::DrawArrays(*da);
+ ps->setFirst(da->getFirst() + before);
+ pvt_prim_list.push_back(ps);
+ }
+ else if ((de1 = dynamic_cast<osg::DrawElementsUByte *>(ii->get())) != 0)
+ {
+ if (before + count <= 255)
+ {
+ osg::DrawElementsUByte *ps = new osg::DrawElementsUByte(*de1);
+ for (size_t j = 0; j < ps->size(); ++j)
+ {
+ (*ps)[j] += before;
+ }
+ pvt_prim_list.push_back(ps);
+ }
+ else if (before + count <= 65535)
+ {
+ osg::DrawElementsUShort *ps = new osg::DrawElementsUShort(de1->getMode(), de1->begin(), de1->end());
+ for (size_t j = 0; j < ps->size(); ++j)
+ {
+ (*ps)[j] += before;
+ }
+ pvt_prim_list.push_back(ps);
+ }
+ else
+ {
+ osg::DrawElementsUInt *ps = new osg::DrawElementsUInt(de1->getMode(), de1->begin(), de1->end());
+ for (size_t j = 0; j < ps->size(); ++j)
+ {
+ (*ps)[j] += before;
+ }
+ pvt_prim_list.push_back(ps);
+ }
+ }
+ else if ((de2 = dynamic_cast<osg::DrawElementsUShort *>(ii->get())) != 0)
+ {
+ if (before + count <= 65535)
+ {
+ osg::DrawElementsUShort *ps = new osg::DrawElementsUShort(*de2);
+ for (size_t j = 0; j < ps->size(); ++j)
+ {
+ (*ps)[j] += before;
+ }
+ pvt_prim_list.push_back(ps);
+ }
+ else
+ {
+ osg::DrawElementsUInt *ps = new osg::DrawElementsUInt(de2->getMode(), de2->begin(), de2->end());
+ for (size_t j = 0; j < ps->size(); ++j)
+ {
+ (*ps)[j] += before;
+ }
+ pvt_prim_list.push_back(ps);
+ }
+ }
+ else if ((de3 = dynamic_cast<osg::DrawElementsUInt *>(ii->get())) != 0)
+ {
+ osg::DrawElementsUInt *ps = new osg::DrawElementsUInt(*de3);
+ for (size_t j = 0; j < ps->size(); ++j)
+ {
+ (*ps)[j] += before;
+ }
+ pvt_prim_list.push_back(ps);
+ }
+ }
+ }
+ pvt_geom->setVertexArray(pvt_vertices.get());
+
+ for (unsigned int i=0; i<apt->numRunways(); ++i)
+ {
+ FGRunway* runway(apt->getRunwayByIndex(i));
+ if (runway->isReciprocal()) continue;
+
+ addRunwayVertices(runway, tower_lat, tower_lon, scale, rwy_vertices.get());
+ }
+ osg::Geometry *rwy_geom = dynamic_cast<osg::Geometry *>(_geode->getDrawable(2));
+ rwy_geom->setVertexArray(rwy_vertices.get());
+ osg::DrawArrays* rwy = dynamic_cast<osg::DrawArrays*>(rwy_geom->getPrimitiveSet(0));
rwy->setCount(rwy_vertices->size());
-
+
getCamera()->setNodeMask(0xffffffff);
}
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