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Added a "skirt" to try to help hide gaps between scenery and sky. This will

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have to be revisited in the future.
This commit is contained in:
curt 1998-01-26 15:54:28 +00:00
parent db9fbe603f
commit 0322d1d108
1 changed files with 30 additions and 3 deletions
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33
Astro/sky.c
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@ -55,17 +55,24 @@
/* in meters of course */
#define CENTER_ELEV 25000.0
#define INNER_RADIUS 50000.0
#define INNER_ELEV 20000.0
#define MIDDLE_RADIUS 70000.0
#define MIDDLE_ELEV 8000.0
#define OUTER_RADIUS 80000.0
#define OUTER_ELEV 0.0
#define BOTTOM_RADIUS 50000.0
#define BOTTOM_ELEV -2000.0
static float inner_vertex[12][3];
static float middle_vertex[12][3];
static float outer_vertex[12][3];
static float bottom_vertex[12][3];
static float inner_color[12][4];
static float middle_color[12][4];
@ -97,6 +104,9 @@ void fgSkyVerticesInit( void ) {
outer_vertex[i][1] = sin((double)theta) * OUTER_RADIUS;
outer_vertex[i][2] = OUTER_ELEV;
bottom_vertex[i][0] = cos((double)theta) * BOTTOM_RADIUS;
bottom_vertex[i][1] = sin((double)theta) * BOTTOM_RADIUS;
bottom_vertex[i][2] = BOTTOM_ELEV;
}
}
@ -325,15 +335,32 @@ void fgSkyRender( void ) {
xglVertex3fv( middle_vertex[0] );
xglEnd();
/* Draw the bottom skirt */
xglBegin( GL_TRIANGLE_STRIP );
for ( i = 0; i < 12; i++ ) {
xglColor4fv( l->fog_color );
xglVertex3fv( bottom_vertex[i] );
xglColor4fv( outer_color[i] );
xglVertex3fv( outer_vertex[i] );
}
xglColor4fv( l->fog_color );
xglVertex3fv( bottom_vertex[0] );
xglColor4fv( outer_color[0] );
xglVertex3fv( outer_vertex[0] );
xglEnd();
xglPopMatrix();
}
/* $Log$
/* Revision 1.3 1998/01/19 19:26:59 curt
/* Merged in make system changes from Bob Kuehne <rpk@sgi.com>
/* This should simplify things tremendously.
/* Revision 1.4 1998/01/26 15:54:28 curt
/* Added a "skirt" to try to help hide gaps between scenery and sky. This will
/* have to be revisited in the future.
/*
* Revision 1.3 1998/01/19 19:26:59 curt
* Merged in make system changes from Bob Kuehne <rpk@sgi.com>
* This should simplify things tremendously.
*
* Revision 1.2 1998/01/19 18:40:17 curt
* Tons of little changes to clean up the code and to remove fatal errors
* when building with the c++ compiler.