From: curt <curt>
Date: Wed, 27 Aug 1997 03:34:48 +0000 (+0000)
Subject: Initial revisio.
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=793d050695ebadcf6ecae2f002442aa1afb9e1fb;p=flightgear.git

Initial revisio.
---

diff --git a/Scenery/stars.c b/Scenery/stars.c
new file mode 100644
index 000000000..7e4021bca
--- /dev/null
+++ b/Scenery/stars.c
@@ -0,0 +1,120 @@
+/**************************************************************************
+ * stars.c -- data structures and routines for managing and rendering stars.
+ *
+ * Written by Curtis Olson, started August 1997.
+ *
+ * Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
+ *
+ * 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.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifdef WIN32
+#  include <windows.h>
+#endif
+
+#include <math.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <GL/glut.h>
+
+#include "stars.h"
+
+#include "../general.h"
+
+
+/* static struct STAR stars[FG_MAX_STARS]; */
+static GLint stars;
+
+
+/* Initialize the Star Management Subsystem */
+void fgStarsInit() {
+    FILE *fd;
+    struct general_params *g;
+    char path[1024];
+    char line[256], name[256];
+    char *tmp_ptr;
+    double right_ascension, declination, magnitude;
+    int count;
+
+    g = &general;
+
+    /* build the full path name to the stars data base file */
+    path[0] = '\0';
+    strcat(path, g->root_dir);
+    strcat(path, "/Scenery/");
+    strcat(path, "Stars.dat");
+
+    printf("Loading Stars: %s\n", path);
+
+    if ( (fd = fopen(path, "r")) == NULL ) {
+	printf("Cannot open star file: '%s'\n", path);
+	return;
+    }
+
+    stars = glGenLists(1);
+    glNewList( stars, GL_COMPILE );
+    glBegin( GL_POINTS );
+
+    /* read in each line of the file */
+    count = 0;
+    while ( (fgets(line, 256, fd) != NULL) && (count < FG_MAX_STARS) ) {
+	tmp_ptr = line;
+	
+	/* advance to first non-whitespace character */
+	while ( (tmp_ptr[0] == ' ') || (tmp_ptr[0] == '\t') ) {
+	    tmp_ptr++;
+	}
+
+	if ( tmp_ptr[0] == '#' ) {
+	    /* comment */
+	} else if ( strlen(tmp_ptr) == 0 ) {
+	    /* blank line */
+	} else {
+	    /* star data line */
+	    fscanf(fd, "%s %lf %lf %lf\n", 
+		   name, &right_ascension, &declination, &magnitude);
+	    /* printf("Found star: %d %s, %.3f %.3f %.3f\n", count,
+	       name, right_ascension, declination, magnitude); */
+	    count++;
+	    glColor3f( magnitude, magnitude, magnitude );
+	    glVertex3f( 100.0 * sin(right_ascension) * cos(declination),
+			100.0 * cos(right_ascension) * cos(declination),
+			100.0 * sin(declination) );
+
+	} /* if valid line */
+
+    } /* while */
+
+    glEnd();
+    glEndList();
+}
+
+
+/* Draw the Stars */
+void fgStarsRender() {
+    glCallList(stars);
+}
+
+
+/* $Log$
+/* Revision 1.1  1997/08/27 03:34:48  curt
+/* Initial revisio.
+/*
+ */
diff --git a/Scenery/stars.h b/Scenery/stars.h
new file mode 100644
index 000000000..2a4186dca
--- /dev/null
+++ b/Scenery/stars.h
@@ -0,0 +1,56 @@
+/**************************************************************************
+ * stars.h -- data structures and routines for managing and rendering stars.
+ *
+ * Written by Curtis Olson, started August 1997.
+ *
+ * Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
+ *
+ * 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.
+ *
+ * $Id$
+ * (Log is kept at end of this file)
+ **************************************************************************/
+
+
+#ifndef STARS_H
+#define STARS_H
+
+
+#define FG_MAX_STARS 100
+
+
+/* Define a structure containing star information */
+/* struct STAR {
+    double right_ascension;
+    double declination;
+    double magnitude;
+}; */
+
+
+/* Initialize the Star Management Subsystem */
+void fgStarsInit();
+
+/* Draw the Stars */
+void fgStarsRender();
+
+
+#endif /* STARS_H */
+
+
+/* $Log$
+/* Revision 1.1  1997/08/27 03:34:50  curt
+/* Initial revisio.
+/*
+ */