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Working on redoing internal coordinate systems & scenery transformations.

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curt
1997-07-31 22:52:27 +00:00
parent 9c4b4abb50
commit 68af57b759
4 changed files with 34 additions and 17 deletions
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Math/polar.c
+13 -10
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@@ -35,15 +35,15 @@
static double st, ct, sp, cp;
/* Convert a geodetic coordinate to a cartesian coordinat on the unit
* circle, scaled by the radius of the earth in meters. Ignores Altitude,
* since this is just for translating points around on the surface. */
struct fgCartesianPoint fgGeodetic2Cartesian(double lon, double lat) {
/* Convert a polar coordinate to a cartesian coordinate. Lon and Lat
* must be specified in radians. The FG convention is for distances
* to be specified in meters */
struct fgCartesianPoint fgPolarToCart(double lon, double lat, double radius) {
struct fgCartesianPoint pnew;
pnew.x = cos(lon) * cos(lat) * EARTH_RAD;
pnew.y = sin(lon) * cos(lat) * EARTH_RAD;
pnew.z = sin(lat) * EARTH_RAD;
pnew.x = cos(lon) * cos(lat) * radius;
pnew.y = sin(lon) * cos(lat) * radius;
pnew.z = sin(lat) * radius;
return(pnew);
}
@@ -101,6 +101,9 @@ struct fgCartesianPoint fgRotateCartesianPoint(struct fgCartesianPoint p) {
/* $Log$
/* Revision 1.1 1997/07/07 21:02:36 curt
/* Initial revision.
/* */
/* Revision 1.2 1997/07/31 22:52:27 curt
/* Working on redoing internal coordinate systems & scenery transformations.
/*
* Revision 1.1 1997/07/07 21:02:36 curt
* Initial revision.
* */