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Nasal library/geo: Difference between revisions
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Finish [direct_]distance_to(), plus minor things
Red Leader (talk | contribs) (Finish course_to()) |
Red Leader (talk | contribs) (Finish [direct_]distance_to(), plus minor things) |
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|param1text = The latitude coordinate, in degrees. | |param1text = The latitude coordinate, in degrees. | ||
|example1 = var coord = geo.Coord.new(); | |example1 = var coord = geo.Coord.new(); | ||
coord.set_latlon(0,0,0); | coord.set_latlon(0, 0, 0); | ||
coord.set_lat(45); | coord.set_lat(45); | ||
coord.dump(); | coord.dump(); | ||
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|param1text = The longitude coordinate, in degrees. | |param1text = The longitude coordinate, in degrees. | ||
|example1 = var coord = geo.Coord.new(); | |example1 = var coord = geo.Coord.new(); | ||
coord.set_latlon(0,0,0); | coord.set_latlon(0, 0, 0); | ||
coord.set_lon(90); | coord.set_lon(90); | ||
coord.dump(); | coord.dump(); | ||
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|param1text = The altitude coordinate. Note that this can be in either feet or metres, so make sure you convert correctly. Also note that in conversion, this coordinate will be assumed to be metres above equatorial radius of earth used is that defined by the {{wikipedia|WGS 84}} (6,378,137 metres). | |param1text = The altitude coordinate. Note that this can be in either feet or metres, so make sure you convert correctly. Also note that in conversion, this coordinate will be assumed to be metres above equatorial radius of earth used is that defined by the {{wikipedia|WGS 84}} (6,378,137 metres). | ||
|example1 = var coord = geo.Coord.new(); | |example1 = var coord = geo.Coord.new(); | ||
coord.set_latlon(0,0,0); | coord.set_latlon(0, 0, 0); | ||
coord.set_alt(1000); | coord.set_alt(1000); | ||
coord.dump(); | coord.dump(); | ||
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|param1text = The mandatory x-axis coordinate, in metres. | |param1text = The mandatory x-axis coordinate, in metres. | ||
|example1 = var coord = geo.Coord.new(); | |example1 = var coord = geo.Coord.new(); | ||
coord.set_xyz(0,0,0); | coord.set_xyz(0, 0, 0); | ||
coord.set_x(10); | coord.set_x(10); | ||
coord.dump(); | coord.dump(); | ||
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|param1text = The mandatory z-axis coordinate, in metres. | |param1text = The mandatory z-axis coordinate, in metres. | ||
|example1 = var coord = geo.Coord.new(); | |example1 = var coord = geo.Coord.new(); | ||
coord.set_xyz(0,0,0); | coord.set_xyz(0, 0, 0); | ||
coord.set_y(10); | coord.set_y(10); | ||
coord.dump(); | coord.dump(); | ||
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|source = {{fgdata file|Nasal/geo.nas|t=Source}} | |source = {{fgdata file|Nasal/geo.nas|t=Source}} | ||
|text = Returns the initial bearing (see [http://www.movable-type.co.uk/scripts/latlong.html#bearing here]) to another <code>geo.Coord</code> instance. The bearing will be in the range 0–360. | |text = Returns the initial bearing (see [http://www.movable-type.co.uk/scripts/latlong.html#bearing here]) to another <code>geo.Coord</code> instance. The bearing will be in the range 0–360. | ||
|param1 = coord | |||
|param1text = Mandatory <code>geo.Coord</code> instance to calculate bearing to. | |||
|example1 = var c1 = geo.Coord.new(); | |example1 = var c1 = geo.Coord.new(); | ||
c1.set_latlon(0, 0); | c1.set_latlon(0, 0); | ||
| Line 245: | Line 247: | ||
printf("%.5f", c1.course_to(c2)); # prints "44.99564" | printf("%.5f", c1.course_to(c2)); # prints "44.99564" | ||
}} | }} | ||
==== distance_to() ==== | |||
{{Nasal doc | |||
|syntax = geo.Coord.distance_to(coord); | |||
|source = {{fgdata file|Nasal/geo.nas|t=Source}} | |||
|text = Returns the great circle distance in metres to another <code>geo.Coord</code> instance. Note that this function ignores altitude. | |||
|param1 = coord | |||
|param1text = Mandatory <code>geo.Coord</code> instance to calculate distance to. | |||
|example1 = var c1 = geo.Coord.new(); | |||
c1.set_latlon(0, 0); | |||
var c2 = geo.Coord.new(); | |||
c2.set_latlon(1, 1); | |||
printf("%i", c1.distance_to(c2)); # prints "157425" | |||
}} | |||
==== direct_distance_to() ==== | |||
{{Nasal doc | |||
|syntax = geo.Coord.direct_distance_to(coord); | |||
|source = {{fgdata file|Nasal/geo.nas|t=Source}} | |||
|text = Returns the direct distance (cutting through the earth) in metres to another <code>geo.Coord</code> instance. | |||
|param1 = coord | |||
|param1text = Mandatory <code>geo.Coord</code> instance to calculate distance to. | |||
|example1 = var c1 = geo.Coord.new(); | |||
c1.set_latlon(0, 0); | |||
var c2 = geo.Coord.new(); | |||
c2.set_latlon(45, 90); | |||
printf("%i", c1.direct_distance_to(c2)); # prints "9012522" | |||
}} | |||
==== apply_course_distance() ==== | |||
=== PositionedSearch === | === PositionedSearch === | ||