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/*
ssystem 1.6
Copyright (C) 1997-1998 Raul Alonso <amil@las.es>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <GL/glut.h>
#ifndef PLANET
#include "cfgparse.tab.h"
#endif
#define NUMSTARS 3141 /* 3141 for full star catalog, decrease number for better
performance, first N brighter stars are used */
#define MAXBODIES 50
#ifndef PI
#define PI 3.14159265358979323846
#define PIl 3.14159265358979323846L
#endif
#define DATEOFELEMENTS 2450680.5 /* In Julian days */
/* Macros used to scale down distances/radii so we can reduce the
jerkiness effect in outter bodies */
#define DFACTOR 1000.0
#define RADIUSSCALE(x) ((x)*0.1/DFACTOR)
#define DISTCORRECTION(x) ((x)*149.0/DFACTOR)
/* Need no comment ;-) */
#define DEG2RAD(x) ((x)*PI/180.0)
#define RAD2DEG(x) ((x)*180.0/PI)
#define DISTANCE(x,y,z) sqrt((x)*(x)+(y)*(y)+(z)*(z))
#define RANGE(n,l,h) ((n)>(h)?(h):((n)<(l)?(l):(n)))
#ifndef WIN32
#define error(s) fprintf(stderr,s)
#define scmp strcasecmp
#else
#define error(s) MessageBox(NULL,s,"ERROR", MB_OK);
#define scmp _stricmp
#endif
extern GLfloat LightPos[4];
extern GLfloat ambient[4];
extern GLfloat White[4];
extern GLfloat Black[4];
extern int texture,smodel,lighting,drawstars;
extern int Stars,Ecliptic,red,polaris;
extern int ImgWidth, ImgHeight, width, height;
extern double days,timefactor;
extern char texturepath[100];
extern char configurationpath[100];
extern int slices,stacks,NUMBODIES;
extern double camx, camy, camz, eyex, eyey, eyez, upx, upy, upz;
extern float fov,fps,sec,star_mag, speed,accel,oldaccel,d,zoom,aratio;
extern int frames,paused,cmode,currsource,currtarget;
extern int demomode,bench,help,plabels,slabels,init,openbitmap;
extern int fullscreen,info,realtime,trail,jpeg_quality,atmospheres;
extern char sbuf[100],game_string[20];
extern int joyavailable,joyactive;
typedef struct {
char Name[20];
int Type,TrailEnabled;
int Sat,CustomFunction;
GLUquadricObj *Object;
GLubyte *Image;
GLuint Sphere,Trail,*textures,texnum,texwidth,texheight;
float DeltaRotation,Radius,xflat,yflat,zflat,Rotation,Degrees,OrbitalPeriod;
float Inclination,AscendingNode,Perihelion,MeanDistance,DailyMotion;
float Eccentricity,MeanLongitude,Color[4];
double posx,posy,posz;
} planetdata;
typedef struct {
char Name[20];
double posx,posy,posz;
float magnitude,color[3];
char type;
} stardata;
extern planetdata planets[MAXBODIES];
extern stardata stars[NUMSTARS];
/* cmdline.c */
#ifdef WIN32
void ParseCmdLineWIN32(char *);
#else
void ParseCmdLine(int, char **);
#endif
/* init.c */
void Init(void);
void InitStars(float, int);
/* positions.c */
void UpdatePositions(double, int);
/* joystick.c */
void joystick(void);
void joydetect(void);
/* cfgparse */
void ReadConfigFile(void);
/* vsop87.c */
void EarthPos(double, double *, double *, double *);
void JupiterPos(double, double *, double *, double *);
void MarsPos(double, double *, double *, double *);
void MercuryPos(double, double *, double *, double *);
void NeptunePos(double, double *, double *, double *);
void SaturnPos(double, double *, double *, double *);
void UranusPos(double, double *, double *, double *);
void VenusPos(double, double *, double *, double *);
void PlutoPos(double, double *, double *, double *);
void MoonPos(double, double *, double *, double *);
/* keyboard.c */
void Key( unsigned char, int, int);
void Special(int, int, int);
/* mouse.c */
void Mouse(int, int, int, int);
void Motion(int, int);
/* sshot.c */
void ScreenShot(char *);
/* sun.c */
void SunBillBoard( void );
/* timer.c */
void TimerDemo(int);
/* util.c */
void printstring(void *, char *);
float gettime(void);
void Rotation(double, double, double, double, double *, double *, double *);
/* jpeg.c */
GLubyte *read_JPEG_file (char *, int *, int *, int *);
/* stars.c */
void InitStars(float, int);
extern float star_size;
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