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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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9
Math/Makefile
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@ -26,7 +26,8 @@
TARGET = libMath.a
CFILES = MAT3geom.c MAT3inv.c MAT3mat.c MAT3vec.c fg_random.c polar.c
CFILES = MAT3geom.c MAT3inv.c MAT3mat.c MAT3vec.c fg_geodesy.c fg_random.c \
polar.c
OFILES = $(CFILES:.c=.o)
@ -68,6 +69,9 @@ MAT3mat.o:
MAT3vec.o:
$(CC) $(CFLAGS) -c $< -o $@
fg_geodesy.o:
$(CC) $(CFLAGS) -c fg_geodesy.c -o $@
fg_random.o:
$(CC) $(CFLAGS) -c fg_random.c -o $@
@ -77,6 +81,9 @@ polar.o:
#---------------------------------------------------------------------------
# $Log$
# Revision 1.12 1997/07/31 22:52:27 curt
# Working on redoing internal coordinate systems & scenery transformations.
#
# Revision 1.11 1997/07/30 16:04:08 curt
# Moved random routines from Utils/ to Math/
#

2
Math/depend
View file

@ -2,5 +2,7 @@ MAT3geom.o: MAT3geom.c mat3defs.h mat3.h
MAT3inv.o: MAT3inv.c mat3defs.h mat3.h
MAT3mat.o: MAT3mat.c mat3defs.h mat3.h
MAT3vec.o: MAT3vec.c mat3.h
fg_geodesy.o: fg_geodesy.c fg_geodesy.h ../constants.h
fg_random.o: fg_random.c fg_random.h
geotest.o: geotest.c ../constants.h fg_geodesy.h
polar.o: polar.c polar.h ../types.h ../constants.h

23
Math/polar.c
View file

@ -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.
* */

17
Math/polar.h
View file

@ -31,10 +31,11 @@
#include "../types.h"
/* 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);
/* Precalculate as much as possible so we can do a batch of transforms
* through the same angles, will rotates a cartesian point about the
@ -52,6 +53,7 @@ struct fgCartesianPoint fgGeodetic2Cartesian(double lon, double lat);
*/
void fgRotateBatchInit(double Theta, double Phi);
/* Rotates a cartesian point about the center of the earth by Theta
* (longitude axis) and Phi (latitude axis) */
struct fgCartesianPoint fgRotateCartesianPoint(struct fgCartesianPoint p);
@ -61,9 +63,12 @@ struct fgCartesianPoint fgRotateCartesianPoint(struct fgCartesianPoint p);
/* $Log$
/* Revision 1.2 1997/07/23 21:52:21 curt
/* Put comments around the text after an #endif for increased portability.
/* Revision 1.3 1997/07/31 22:52:28 curt
/* Working on redoing internal coordinate systems & scenery transformations.
/*
* Revision 1.2 1997/07/23 21:52:21 curt
* Put comments around the text after an #endif for increased portability.
*
* Revision 1.1 1997/07/07 21:02:37 curt
* Initial revision.
*