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Helipad shoulder support

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This commit is contained in:
Christian Schmitt 2012-09-09 00:25:09 +02:00
parent d81f2c36e1
commit 473992e684
3 changed files with 143 additions and 12 deletions
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24
src/Airports/GenAirports850/airport.cxx
View file

@ -797,6 +797,30 @@ void Airport::BuildBtg(const string& root, const string_list& elev_src )
}
}
// Build helipad shoulders here
for ( unsigned int i=0; i<helipads.size(); i++ )
{
SG_LOG(SG_GENERAL, SG_INFO, "Build Helipad shoulder " << i + 1 << " of " << helipads.size());
if ( helipads[i]->GetsShoulder() )
{
slivers.clear();
if (boundary)
{
helipads[i]->BuildShoulder( &rwy_polys, &rwy_tps, &accum, slivers, NULL, NULL );
}
else
{
helipads[i]->BuildShoulder( &rwy_polys, &rwy_tps, &accum, slivers, &apt_base, &apt_clearing );
}
// Now try to merge any slivers we found
merge_slivers( rwy_polys, slivers );
merge_slivers( pvmt_polys, slivers );
}
}
// build the base and clearing if there's a boundary
if (boundary)
{

104
src/Airports/GenAirports850/helipad.cxx
View file

@ -143,7 +143,7 @@ void Helipad::BuildBtg( superpoly_list *rwy_polys,
TGPolygon helipad = gen_wgs84_area( GetLoc(), maxsize, 0, 0, maxsize, heli.heading, false);
helipad = snap( helipad, gSnap );
string material;
string material, shoulder_mat;
if (heli.surface == 1)
material = "pa_";
else
@ -158,14 +158,14 @@ void Helipad::BuildBtg( superpoly_list *rwy_polys,
tp.set_minv( 1 );
tp.set_maxv( 0 );
texparams->push_back( tp );
if (area_top || area_side) {
TGPolygon area_poly; area_poly.erase();
point_list area; area.clear();
int i = 0;
double heading = 0, areahight = 0;
TGPolygon heli_area = gen_runway_area_w_extend(0.0, 0.0, 0.0, 0.0, 0.0);
heli_area = snap( heli_area, gSnap );
int i = 0;
TGPolygon area_poly; area_poly.erase();
point_list area; area.clear();
if (area_top || area_side) {
if (area_top) {
areahight = (heli.length - maxsize) /2;
@ -189,7 +189,7 @@ void Helipad::BuildBtg( superpoly_list *rwy_polys,
}
TGPolygon area_geom;
for (int i = 0; i < 2; ++i) {
for (i = 0; i < 2; ++i) {
area_geom.add_contour(area_poly.get_contour(i), false);
WriteGeom( area_geom, material + "tiedown", rwy_polys, accum, slivers);
@ -205,6 +205,54 @@ void Helipad::BuildBtg( superpoly_list *rwy_polys,
}
}
if (heli.shoulder == 1) {
shoulder_mat = "pa_shoulder";
areahight = 6; // shoulder size in m
} else if (heli.shoulder == 2) {
shoulder_mat = "pc_shoulder";
areahight = 6; // shoulder size in m
} else {
shoulder_mat = material + "shoulder_f";
areahight = 1; // fake shoulder size in m
}
TGSuperPoly sp;
double shoulder_width = heli.length;
heading = heli.heading;
if (area_side) {
shoulder_width = heli.width;
}
TGPolygon shoulder = gen_runway_area_w_extend(0.0, areahight, 0.0, 0.0, areahight);
shoulder = snap( shoulder, gSnap );
for (i = 0; i < 4; ++i) {
heading -= 90;
if ( heading < 0.0 ) { heading += 360.0; }
area_poly.erase();
area.clear();
area.push_back( shoulder.get_pt( 0,i ) );
area.push_back( shoulder.get_pt( 0,i == 3? 0 : i+1 ) );
area.push_back( heli_area.get_pt( 0,i == 3? 0 : i+1 ) );
area.push_back( heli_area.get_pt( 0,i ) );
area_poly.add_contour( area, false );
sp.erase();
sp.set_poly( area_poly );
sp.set_material( shoulder_mat );
sp.set_flag( "heli-shoulder" );
shoulder_polys.push_back( sp );
tp = TGTexParams( area_poly.get_pt(0,1), areahight, shoulder_width, heading );
tp.set_minu( 1 );
tp.set_maxu( 0 );
tp.set_minv( 1 );
tp.set_maxv( 0 );
shoulder_tps.push_back( tp );
}
// generate area around helipad
if (apt_base)
{
@ -232,3 +280,45 @@ void Helipad::BuildBtg( superpoly_list *rwy_polys,
}
}
}
void Helipad::BuildShoulder( superpoly_list *rwy_polys,
texparams_list *texparams,
ClipPolyType *accum,
poly_list& slivers,
TGPolygon* apt_base,
TGPolygon* apt_clearing )
{
TGPolygon base, safe_base;
TGPolygon shoulder;
for (unsigned int i=0; i<shoulder_polys.size(); i++) {
shoulder = shoulder_polys[i].get_poly();
// Clip the new polygon against what ever has already been created.
TGPolygon clipped = tgPolygonDiffClipper( shoulder, *accum );
tgPolygonFindSlivers( clipped, slivers );
// Split long edges to create an object that can better flow with
// the surface terrain
TGPolygon split = tgPolygonSplitLongEdges( clipped, 400.0 );
shoulder_polys[i].set_poly( split );
rwy_polys->push_back( shoulder_polys[i] );
texparams->push_back( shoulder_tps[i] );
*accum = tgPolygonUnionClipper( shoulder, *accum );
if (apt_base)
{
// also clear a safe area around the runway
base = tgPolygonExpand( shoulder, 20.0);
safe_base = tgPolygonExpand( shoulder, 50.0);
// add this to the airport clearing
*apt_clearing = tgPolygonUnionClipper( safe_base, *apt_clearing );
// and add the clearing to the base
*apt_base = tgPolygonUnionClipper( base, *apt_base );
}
}
}

17
src/Airports/GenAirports850/helipad.hxx
View file

@ -31,6 +31,18 @@ public:
return Point3D( heli.lon, heli.lat, 0.0f );
}
bool GetsShoulder()
{
return (heli.surface < 3) ? true : false;
}
void BuildShoulder( superpoly_list *rwy_polys,
texparams_list *texparams,
ClipPolyType *accum,
poly_list& slivers,
TGPolygon* apt_base,
TGPolygon* apt_clearing );
private:
struct TGRunway {
// data for helipad
@ -59,6 +71,11 @@ private:
superpoly_list gen_helipad_lights(double maxsize);
// storage for Shoulders - The superpolys are generated during
// helipad construction, but not clipped until shoulder construction.
superpoly_list shoulder_polys;
texparams_list shoulder_tps;
void WriteGeom( TGPolygon polygon, string material,
superpoly_list *rwy_polys,
ClipPolyType *accum,