Shufflin' stuff.

[flightgear.git] / Scenery / stars.c

diff --git a/Scenery/stars.c b/Scenery/stars.c
index b001c0d6cfd87137ee57de0974910eb77c7871e3..9d665d4b0e32bcc7a5773978e2b3072a7ae05f0e 100644 (file)
--- 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");
@@ -124,13 +133,11 @@ void fgStarsRender() {
     glDisable( GL_LIGHTING );
     glPushMatrix();
 
-    /* set lighting parameters for stars */
-    /* amb[0] = amb[1] = amb[2] = 1.0;
-    diff[0] = diff[1] = diff[2] = 1.0;
-    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 +148,16 @@ void fgStarsRender() {
 
 
 /* $Log$
-/* Revision 1.2  1997/08/27 21:32:30  curt
-/* Restructured view calculation code.  Added stars.
+/* Revision 1.4  1997/09/04 02:17:38  curt
+/* Shufflin' stuff.
 /*
+ * 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.
  *
  */