From 114d08ebd02c9c32164daa26cef28f8db94a9a80 Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Fri, 29 Aug 1997 17:55:27 +0000
Subject: [PATCH] Worked on properly aligning the stars.

---
 Scenery/scenery.c |  9 ++++++---
 Scenery/stars.c   | 28 ++++++++++++++++++++++------
 Scenery/stars.h   | 17 ++++++-----------
 3 files changed, 34 insertions(+), 20 deletions(-)

diff --git a/Scenery/scenery.c b/Scenery/scenery.c
index 28cbdbdb7..d1a4c38c7 100644
--- a/Scenery/scenery.c
+++ b/Scenery/scenery.c
@@ -50,7 +50,7 @@ struct SCENERY scenery;
 /* Initialize the Scenery Management system */
 void fgSceneryInit() {
     /* set the default terrain detail level */
-    scenery.terrain_skip = 2;
+    scenery.terrain_skip = 6;
 }
 
 
@@ -88,9 +88,12 @@ void fgSceneryRender() {
 
 
 /* $Log$
-/* Revision 1.16  1997/08/27 21:32:29  curt
-/* Restructured view calculation code.  Added stars.
+/* Revision 1.17  1997/08/29 17:55:27  curt
+/* Worked on properly aligning the stars.
 /*
+ * Revision 1.16  1997/08/27 21:32:29  curt
+ * Restructured view calculation code.  Added stars.
+ *
  * Revision 1.15  1997/08/27 03:30:32  curt
  * Changed naming scheme of basic shared structures.
  *
diff --git a/Scenery/stars.c b/Scenery/stars.c
index b001c0d6c..af868804e 100644
--- a/Scenery/stars.c
+++ b/Scenery/stars.c
@@ -31,14 +31,21 @@
 #include <math.h>
 #include <stdio.h>
 #include <string.h>
+#include <time.h>
 
 #include <GL/glut.h>
 
 #include "stars.h"
 
+#include "../constants.h"
 #include "../general.h"
 
 #include "../GLUT/views.h"
+#include "../Aircraft/aircraft.h"
+
+
+#define EpochStart           (631065600)
+#define DaysSinceEpoch(secs) (((secs)-EpochStart)*(1.0/(24*3600)))
 
 
 static GLint stars;
@@ -97,7 +104,7 @@ void fgStarsInit() {
 	    count++;
 	    magnitude = magnitude * 0.8 + 0.2;
 	    mag[0] = mag[1] = mag[2] = magnitude;
-	    glColor3f( magnitude, magnitude, magnitude );
+	    glColor3f( mag[0], mag[1], mag[2] );
 	    glVertex3f( 190000.0 * sin(right_ascension) * cos(declination),
 			190000.0 * cos(right_ascension) * cos(declination),
 			190000.0 * sin(declination) );
@@ -113,9 +120,11 @@ void fgStarsInit() {
 
 /* Draw the Stars */
 void fgStarsRender() {
+    struct FLIGHT *f;
     struct VIEW *v;
-    GLfloat amb[3], diff[3];
+    double angle;
 
+    f = &current_aircraft.flight;
     v = &current_view;
 
     printf("RENDERING STARS\n");
@@ -130,7 +139,11 @@ void fgStarsRender() {
     glLightfv(GL_LIGHT0, GL_AMBIENT, amb );
     glLightfv(GL_LIGHT0, GL_DIFFUSE, diff ); */
 
-    glTranslatef(v->view_pos.x, v->view_pos.y, v->view_pos.z);
+    glTranslatef( v->view_pos.x, v->view_pos.y, v->view_pos.z );
+
+    angle = FG_2PI * fmod(DaysSinceEpoch(time(NULL)), 1.0);
+    glRotatef( -angle * RAD_TO_DEG, 0.0, 0.0, 1.0 );
+    printf("Rotating stars by %.2f\n", -angle * RAD_TO_DEG);
 
     glCallList(stars);
 
@@ -141,10 +154,13 @@ void fgStarsRender() {
 
 
 /* $Log$
-/* Revision 1.2  1997/08/27 21:32:30  curt
-/* Restructured view calculation code.  Added stars.
+/* Revision 1.3  1997/08/29 17:55:28  curt
+/* Worked on properly aligning the stars.
 /*
+ * Revision 1.2  1997/08/27 21:32:30  curt
+ * Restructured view calculation code.  Added stars.
+ *
  * Revision 1.1  1997/08/27 03:34:48  curt
- * Initial revisio.
+ * Initial revision.
  *
  */
diff --git a/Scenery/stars.h b/Scenery/stars.h
index ee331fec0..9e8e2d1f0 100644
--- a/Scenery/stars.h
+++ b/Scenery/stars.h
@@ -31,14 +31,6 @@
 #define FG_MAX_STARS 1000
 
 
-/* Define a structure containing star information */
-/* struct STAR {
-    double right_ascension;
-    double declination;
-    double magnitude;
-}; */
-
-
 /* Initialize the Star Management Subsystem */
 void fgStarsInit();
 
@@ -50,10 +42,13 @@ void fgStarsRender();
 
 
 /* $Log$
-/* Revision 1.2  1997/08/27 21:32:30  curt
-/* Restructured view calculation code.  Added stars.
+/* Revision 1.3  1997/08/29 17:55:28  curt
+/* Worked on properly aligning the stars.
 /*
+ * Revision 1.2  1997/08/27 21:32:30  curt
+ * Restructured view calculation code.  Added stars.
+ *
  * Revision 1.1  1997/08/27 03:34:50  curt
- * Initial revisio.
+ * Initial revision.
  *
  */
-- 
2.39.2