fly/terragear
1
0
Fork 0
Code Activity

[apt_math] Maintenance

Browse source
This commit is contained in:
scttgs0 2023-05-14 02:09:50 -05:00
parent 48e80937c9
commit f9575d0d4e
1 changed files with 50 additions and 49 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

81
src/Airports/GenAirports/apt_math.cxx
View file

@ -13,123 +13,124 @@
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
//
#include <simgear/compiler.h>
#include "apt_math.hxx"
#include <simgear/compiler.h>
tgContour gen_wgs84_area( SGGeod origin,
tgContour gen_wgs84_area(SGGeod origin,
double length_m,
double displ1, double displ2,
double width_m,
double heading_deg,
bool add_mid )
bool add_mid)
{
tgContour result;
double length_hdg = heading_deg;
double left_hdg = SGMiscd::normalizePeriodic(0, 360, length_hdg - 90.0);
double left_hdg = SGMiscd::normalizePeriodic(0.0, 360.0, length_hdg - 90.0);
// move to the +l end/center of the runway
SGGeod ref = SGGeodesy::direct( origin, length_hdg, length_m / 2.0 - displ2 );
SGGeod ref = SGGeodesy::direct(origin, length_hdg, length_m / 2.0 - displ2);
// move to the l,-w corner (then we add points in a clockwise direction)
result.AddNode( SGGeodesy::direct( ref, left_hdg, -width_m / 2.0) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, -width_m / 2.0));
// move to the l,w corner
result.AddNode( SGGeodesy::direct( ref, left_hdg, width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, width_m / 2.0));
if ( add_mid ) {
if (add_mid) {
// move to the 0,w point (then we add points in a clockwise direction)
result.AddNode( SGGeodesy::direct( origin, left_hdg, width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(origin, left_hdg, width_m / 2.0));
}
// move to the -l end/center of the runway
ref = SGGeodesy::direct( origin, length_hdg, displ1 - length_m/2.0);
ref = SGGeodesy::direct(origin, length_hdg, displ1 - length_m / 2.0);
// move to the -l,w corner (then we add points in a clockwise direction)
result.AddNode( SGGeodesy::direct( ref, left_hdg, width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, width_m / 2.0));
// move to the -l,-w corner
result.AddNode( SGGeodesy::direct( ref, left_hdg, -width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, -width_m / 2.0));
if ( add_mid ) {
if (add_mid) {
// move to the 0,-w point (then we add points in a clockwise direction)
result.AddNode( SGGeodesy::direct( origin, left_hdg, -width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(origin, left_hdg, -width_m / 2.0));
}
result.SetHole( false );
result.SetHole(false);
return result;
}
tgContour gen_wgs84_area( SGGeod end1, SGGeod end2,
tgContour gen_wgs84_area(SGGeod end1, SGGeod end2,
double length_ext,
double displ1, double displ2,
double width_m,
double heading_deg,
bool add_mid )
bool add_mid)
{
tgContour result;
double left_hdg = SGMiscd::normalizePeriodic( 0, 360, heading_deg - 90.0 );
double left_hdg = SGMiscd::normalizePeriodic(0.0, 360.0, heading_deg - 90.0);
double course1, course2, distance;
SGGeodesy::inverse(end1, end2, course1, course2, distance);
// Calc the center
SGGeod center = SGGeodesy::direct(end1, course1, distance/2 );
SGGeod center = SGGeodesy::direct(end1, course1, distance / 2.0);
// move from end2 to the displaced threshold
SGGeod ref = SGGeodesy::direct( end2, heading_deg, length_ext / 2.0 - displ2);
SGGeod ref = SGGeodesy::direct(end2, heading_deg, length_ext / 2.0 - displ2);
// move to the l,-w corner
result.AddNode( SGGeodesy::direct(ref, left_hdg, -width_m / 2.0) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, -width_m / 2.0));
// move to the l,w corner
result.AddNode( SGGeodesy::direct(ref, left_hdg, width_m / 2.0) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, width_m / 2.0));
if ( add_mid ) {
if (add_mid) {
// move to the 0,w point
result.AddNode( SGGeodesy::direct( center, left_hdg, width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(center, left_hdg, width_m / 2.0));
}
// move to the end1 center to the displ. threshold
ref = SGGeodesy::direct( end1, heading_deg, displ1 - length_ext / 2.0 );
ref = SGGeodesy::direct(end1, heading_deg, displ1 - length_ext / 2.0);
// move to the -l,w corner
result.AddNode( SGGeodesy::direct( ref, left_hdg, width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, width_m / 2.0));
// move to the -l,-w corner
result.AddNode( SGGeodesy::direct( ref, left_hdg, -width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(ref, left_hdg, -width_m / 2.0));
if ( add_mid ) {
if (add_mid) {
// move to the 0,-w point
result.AddNode( SGGeodesy::direct( center, left_hdg, -width_m / 2.0 ) );
result.AddNode(SGGeodesy::direct(center, left_hdg, -width_m / 2.0));
}
return result;
}
tgContour gen_wgs84_rect( SGGeod origin, double heading, double length, double width )
tgContour gen_wgs84_rect(SGGeod origin, double heading, double length, double width)
{
tgContour result;
SGGeod p;
// starting point is in the middle of the rectangle width, at the beginning - stretch to heading
// Point 1 is -90deg, 1/2 width away
double left_hdg = SGMiscd::normalizePeriodic(0, 360, heading -90 );
p = SGGeodesy::direct( origin, left_hdg, width / 2.0 );
result.AddNode( p );
double left_hdg = SGMiscd::normalizePeriodic(0.0, 360.0, heading - 90.0);
p = SGGeodesy::direct(origin, left_hdg, width / 2.0);
result.AddNode(p);
// Point 2 is heading, length away from point 1
p = SGGeodesy::direct( p, heading, length );
result.AddNode( p );
p = SGGeodesy::direct(p, heading, length);
result.AddNode(p);
// Point 3 is -90deg, -width away from point 2
p = SGGeodesy::direct( p, left_hdg, -width );
result.AddNode( p );
p = SGGeodesy::direct(p, left_hdg, -width);
result.AddNode(p);
// last point is heading, -length from point 3
p = SGGeodesy::direct( p, heading, -length );
result.AddNode( p );
p = SGGeodesy::direct(p, heading, -length);
result.AddNode(p);
result.SetHole( false );
result.SetHole(false);
return result;
}