From: curt Date: Thu, 18 Dec 1997 23:32:28 +0000 (+0000) Subject: First stab at sky dome actually starting to look reasonable. :-) X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=d289222b399156687bccbcf5408b76f50bbe9850;p=simgear.git First stab at sky dome actually starting to look reasonable. :-) --- diff --git a/Scenery/astro.c b/Scenery/astro.c index 411fd6b1..4e1558e7 100644 --- a/Scenery/astro.c +++ b/Scenery/astro.c @@ -91,7 +91,7 @@ void fgAstroRender() { xglDisable( GL_FOG ); /* set the sun position */ - xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec_inv ); + /* xglLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec_inv ); */ xglPushMatrix(); @@ -122,10 +122,13 @@ void fgAstroRender() { /* $Log$ -/* Revision 1.8 1997/12/15 23:54:57 curt -/* Add xgl wrappers for debugging. -/* Generate terrain normals on the fly. +/* Revision 1.9 1997/12/18 23:32:35 curt +/* First stab at sky dome actually starting to look reasonable. :-) /* + * Revision 1.8 1997/12/15 23:54:57 curt + * Add xgl wrappers for debugging. + * Generate terrain normals on the fly. + * * Revision 1.7 1997/12/15 20:59:09 curt * Misc. tweaks. * diff --git a/Scenery/sky.c b/Scenery/sky.c index 046d36be..ef81c8b5 100644 --- a/Scenery/sky.c +++ b/Scenery/sky.c @@ -46,20 +46,20 @@ #include "../Flight/flight.h" #include "../Include/constants.h" #include "../Main/views.h" +#include "../Math/fg_random.h" /* #include "../Include/general.h" */ /* in meters of course */ #define INNER_RADIUS 50000.0 -#define INNER_ELEV 8000.0 /* was 20000 */ +#define INNER_ELEV 20000.0 #define MIDDLE_RADIUS 70000.0 -#define MIDDLE_ELEV 10000.0 +#define MIDDLE_ELEV 4000.0 #define OUTER_RADIUS 80000.0 #define OUTER_ELEV 0.0 -static GLint sky; /* sky display list */ static float sky_center[12][3]; static float sky_middle[12][3]; static float sky_outer[12][3]; @@ -67,62 +67,32 @@ static float sky_outer[12][3]; /* (Re)generate the display list */ void fgSkyInit() { struct fgLIGHT *l; - static int dl_exists = 0; float theta; int i; l = &cur_light_params; - if ( dl_exists ) { - xglDeleteLists(sky, 1); - } else { - dl_exists = 1; + printf("Generating the sky dome vertices.\n"); - /* first time through, calculate sky vertices */ - for ( i = 0; i < 12; i++ ) { - theta = (i * 30.0) * DEG_TO_RAD; - - sky_center[i][0] = cos(theta) * INNER_RADIUS; - sky_center[i][1] = sin(theta) * INNER_RADIUS; - sky_center[i][2] = INNER_ELEV; - - printf(" %.2f %.2f\n", cos(theta) * INNER_RADIUS, - sin(theta) * INNER_RADIUS); - - sky_middle[i][0] = cos((double)theta) * MIDDLE_RADIUS; - sky_middle[i][1] = sin((double)theta) * MIDDLE_RADIUS; - sky_middle[i][2] = MIDDLE_ELEV; + for ( i = 0; i < 12; i++ ) { + theta = (i * 30.0) * DEG_TO_RAD; + + sky_center[i][0] = cos(theta) * INNER_RADIUS; + sky_center[i][1] = sin(theta) * INNER_RADIUS; + sky_center[i][2] = INNER_ELEV; + + printf(" %.2f %.2f\n", cos(theta) * INNER_RADIUS, + sin(theta) * INNER_RADIUS); + + sky_middle[i][0] = cos((double)theta) * MIDDLE_RADIUS; + sky_middle[i][1] = sin((double)theta) * MIDDLE_RADIUS; + sky_middle[i][2] = MIDDLE_ELEV; - sky_outer[i][0] = cos((double)theta) * OUTER_RADIUS; - sky_outer[i][1] = sin((double)theta) * OUTER_RADIUS; - sky_outer[i][2] = OUTER_ELEV; + sky_outer[i][0] = cos((double)theta) * OUTER_RADIUS; + sky_outer[i][1] = sin((double)theta) * OUTER_RADIUS; + sky_outer[i][2] = OUTER_ELEV; - } } - - printf("Creating the sky\n"); - - sky = xglGenLists(1); - xglNewList(sky, GL_COMPILE ); - - /* xglMaterialfv(GL_FRONT, GL_AMBIENT, l->scene_clear); - xglMaterialfv(GL_FRONT, GL_DIFFUSE, moon_color); */ - - /* Draw inner section */ - xglBegin( GL_TRIANGLE_FAN ); - - xglColor3f(0.0, 0.0, 1.0); - xglVertex3f(0.0, 0.0, INNER_ELEV); - - xglColor3f(0.2, 0.2, 1.0); - for ( i = 0; i < 12; i++ ) { - xglVertex3fv( sky_center[i] ); - } - xglVertex3fv( sky_center[0] ); - - xglEnd(); - - xglEndList(); } @@ -130,26 +100,16 @@ void fgSkyInit() { void fgSkyRender() { struct fgFLIGHT *f; struct fgVIEW *v; - /* - struct fgLIGHT *l; - struct fgTIME *t; int i; - */ f = ¤t_aircraft.flight; v = ¤t_view; - /* - l = &cur_light_params; - t = &cur_time_params; - */ - - /* FG_PI_2 + 0.1 is about 6 degrees after sundown and before sunrise */ - - /* t->sun_angle = 3.0; */ /* to force stars to be drawn (for testing) */ printf("Rendering the sky.\n"); xglDisable( GL_LIGHTING ); + xglDisable( GL_CULL_FACE ); + xglShadeModel( GL_SMOOTH ); xglPushMatrix(); @@ -158,23 +118,61 @@ void fgSkyRender() { /* printf(" Translated to %.2f %.2f %.2f\n", v->cur_zero_elev.x, v->cur_zero_elev.y, v->cur_zero_elev.z ); */ + /* Rotate to proper orientation */ printf(" lon = %.2f lat = %.2f\n", FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG); xglRotatef( FG_Longitude * RAD_TO_DEG, 0.0, 0.0, 1.0 ); xglRotatef( 90.0 - FG_Latitude * RAD_TO_DEG, 0.0, 1.0, 0.0 ); - xglCallList( sky ); + /* xglMaterialfv(GL_FRONT, GL_AMBIENT, l->scene_clear); + xglMaterialfv(GL_FRONT, GL_DIFFUSE, moon_color); */ + + /* Draw inner/center section of sky*/ + xglBegin( GL_TRIANGLE_FAN ); + xglColor4f(0.0, 0.0, 1.0, 1.0); + xglVertex3f(0.0, 0.0, INNER_ELEV); + xglColor4f(0.2, 0.2, 0.8, 1.0); + for ( i = 0; i < 12; i++ ) { + xglVertex3fv( sky_center[i] ); + } + xglVertex3fv( sky_center[0] ); + xglEnd(); + + /* Draw the middle ring */ + xglBegin( GL_TRIANGLE_STRIP ); + for ( i = 0; i < 12; i++ ) { + xglVertex3fv( sky_middle[i] ); + xglVertex3fv( sky_center[i] ); + } + xglVertex3fv( sky_middle[0] ); + xglVertex3fv( sky_center[0] ); + xglEnd(); + + /* Draw the outer ring */ + xglBegin( GL_TRIANGLE_STRIP ); + for ( i = 0; i < 12; i++ ) { + xglVertex3fv( sky_outer[i] ); + xglVertex3fv( sky_middle[i] ); + } + xglVertex3fv( sky_outer[0] ); + xglVertex3fv( sky_middle[0] ); + xglEnd(); xglPopMatrix(); + xglShadeModel( GL_FLAT ); + xglEnable( GL_CULL_FACE ); xglEnable( GL_LIGHTING ); } /* $Log$ -/* Revision 1.2 1997/12/18 04:07:03 curt -/* Worked on properly translating and positioning the sky dome. +/* Revision 1.3 1997/12/18 23:32:36 curt +/* First stab at sky dome actually starting to look reasonable. :-) /* + * Revision 1.2 1997/12/18 04:07:03 curt + * Worked on properly translating and positioning the sky dome. + * * Revision 1.1 1997/12/17 23:14:30 curt * Initial revision. * Begin work on rendering the sky. (Rather than just using a clear screen.)