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Added an option to control square tile radius.

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This commit is contained in:
curt 1998-05-06 03:16:42 +00:00
parent ae19eec252
commit 36ba635389
1 changed files with 40 additions and 28 deletions
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64
Scenery/tilemgr.cxx
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@ -45,6 +45,7 @@
#include <Debug/fg_debug.h>
#include <Include/fg_constants.h>
#include <Include/fg_types.h>
#include <Main/options.hxx>
#define FG_LOCAL_X 7 /* should be odd */
@ -83,15 +84,17 @@ void fgTileMgrLoadTile( struct fgBUCKET *p, int *index) {
* the chunk isn't already in the cache, then read it from disk. */
int fgTileMgrUpdate( void ) {
fgFLIGHT *f;
fgOPTIONS *o;
struct fgBUCKET p1, p2;
static struct fgBUCKET p_last = {-1000, 0, 0, 0};
int i, j, dw, dh;
f = current_aircraft.flight;
o = &current_options;
fgBucketFind(FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG, &p1);
dw = FG_LOCAL_X / 2;
dh = FG_LOCAL_Y / 2;
dw = o->tile_radius / 2;
dh = o->tile_radius / 2;
if ( (p1.lon == p_last.lon) && (p1.lat == p_last.lat) &&
(p1.x == p_last.x) && (p1.y == p_last.y) ) {
@ -109,10 +112,10 @@ int fgTileMgrUpdate( void ) {
fgTileCacheInit();
/* build the local area list and update cache */
for ( j = 0; j < FG_LOCAL_Y; j++ ) {
for ( i = 0; i < FG_LOCAL_X; i++ ) {
for ( j = 0; j < o->tile_radius; j++ ) {
for ( i = 0; i < o->tile_radius; i++ ) {
fgBucketOffset(&p1, &p2, i - dw, j - dh);
fgTileMgrLoadTile(&p2, &tiles[(j*FG_LOCAL_Y) + i]);
fgTileMgrLoadTile(&p2, &tiles[(j*o->tile_radius) + i]);
}
}
} else {
@ -125,47 +128,50 @@ int fgTileMgrUpdate( void ) {
if ( (p1.lon > p_last.lon) ||
( (p1.lon == p_last.lon) && (p1.x > p_last.x) ) ) {
for ( j = 0; j < FG_LOCAL_Y; j++ ) {
for ( j = 0; j < o->tile_radius; j++ ) {
/* scrolling East */
for ( i = 0; i < FG_LOCAL_X - 1; i++ ) {
tiles[(j*FG_LOCAL_Y) + i] = tiles[(j*FG_LOCAL_Y) + i + 1];
for ( i = 0; i < o->tile_radius - 1; i++ ) {
tiles[(j*o->tile_radius) + i] =
tiles[(j*o->tile_radius) + i + 1];
}
/* load in new column */
fgBucketOffset(&p_last, &p2, dw + 1, j - dh);
fgTileMgrLoadTile(&p2, &tiles[(j*FG_LOCAL_Y) + FG_LOCAL_X - 1]);
fgTileMgrLoadTile(&p2, &tiles[(j*o->tile_radius) +
o->tile_radius - 1]);
}
} else if ( (p1.lon < p_last.lon) ||
( (p1.lon == p_last.lon) && (p1.x < p_last.x) ) ) {
for ( j = 0; j < FG_LOCAL_Y; j++ ) {
for ( j = 0; j < o->tile_radius; j++ ) {
/* scrolling West */
for ( i = FG_LOCAL_X - 1; i > 0; i-- ) {
tiles[(j*FG_LOCAL_Y) + i] = tiles[(j*FG_LOCAL_Y) + i - 1];
for ( i = o->tile_radius - 1; i > 0; i-- ) {
tiles[(j*o->tile_radius) + i] =
tiles[(j*o->tile_radius) + i - 1];
}
/* load in new column */
fgBucketOffset(&p_last, &p2, -dw - 1, j - dh);
fgTileMgrLoadTile(&p2, &tiles[(j*FG_LOCAL_Y) + 0]);
fgTileMgrLoadTile(&p2, &tiles[(j*o->tile_radius) + 0]);
}
}
if ( (p1.lat > p_last.lat) ||
( (p1.lat == p_last.lat) && (p1.y > p_last.y) ) ) {
for ( i = 0; i < FG_LOCAL_X; i++ ) {
for ( i = 0; i < o->tile_radius; i++ ) {
/* scrolling North */
for ( j = 0; j < FG_LOCAL_Y - 1; j++ ) {
tiles[(j * FG_LOCAL_Y) + i] =
tiles[((j+1) * FG_LOCAL_Y) + i];
for ( j = 0; j < o->tile_radius - 1; j++ ) {
tiles[(j * o->tile_radius) + i] =
tiles[((j+1) * o->tile_radius) + i];
}
/* load in new column */
fgBucketOffset(&p_last, &p2, i - dw, dh + 1);
fgTileMgrLoadTile(&p2, &tiles[((FG_LOCAL_Y-1)*FG_LOCAL_Y) + i]);
fgTileMgrLoadTile(&p2, &tiles[((o->tile_radius-1)*o->tile_radius) + i]);
}
} else if ( (p1.lat < p_last.lat) ||
( (p1.lat == p_last.lat) && (p1.y < p_last.y) ) ) {
for ( i = 0; i < FG_LOCAL_X; i++ ) {
for ( i = 0; i < o->tile_radius; i++ ) {
/* scrolling South */
for ( j = FG_LOCAL_Y - 1; j > 0; j-- ) {
tiles[(j * FG_LOCAL_Y) + i] =
tiles[((j-1) * FG_LOCAL_Y) + i];
for ( j = o->tile_radius - 1; j > 0; j-- ) {
tiles[(j * o->tile_radius) + i] =
tiles[((j-1) * o->tile_radius) + i];
}
/* load in new column */
fgBucketOffset(&p_last, &p2, i - dw, -dh - 1);
@ -184,6 +190,7 @@ int fgTileMgrUpdate( void ) {
/* Render the local tiles */
void fgTileMgrRender( void ) {
fgFLIGHT *f;
fgOPTIONS *o;
struct fgBUCKET p;
fgCartesianPoint3d local_ref;
GLint display_list;
@ -191,17 +198,19 @@ void fgTileMgrRender( void ) {
int index;
f = current_aircraft.flight;
o = &current_options;
/* Find current translation offset */
fgBucketFind(FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG, &p);
index = fgTileCacheExists(&p);
fgTileCacheEntryInfo(index, &display_list, &scenery.next_center );
printf("Pos = (%.2f, %.2f) Current bucket = %d %d %d %d Index = %ld\n",
fgPrintf( FG_TERRAIN, FG_DEBUG,
"Pos = (%.2f, %.2f) Current bucket = %d %d %d %d Index = %ld\n",
FG_Longitude * RAD_TO_DEG, FG_Latitude * RAD_TO_DEG,
p.lon, p.lat, p.x, p.y, fgBucketGenIndex(&p) );
for ( i = 0; i < FG_LOCAL_X_Y; i++ ) {
for ( i = 0; i < 2 * o->tile_radius; i++ ) {
index = tiles[i];
/* fgPrintf( FG_TERRAIN, FG_DEBUG, "Index = %d\n", index); */
fgTileCacheEntryInfo(index, &display_list, &local_ref );
@ -221,9 +230,12 @@ void fgTileMgrRender( void ) {
/* $Log$
/* Revision 1.6 1998/05/02 01:52:18 curt
/* Playing around with texture coordinates.
/* Revision 1.7 1998/05/06 03:16:42 curt
/* Added an option to control square tile radius.
/*
* Revision 1.6 1998/05/02 01:52:18 curt
* Playing around with texture coordinates.
*
* Revision 1.5 1998/04/30 12:35:32 curt
* Added a command line rendering option specify smooth/flat shading.
*