static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp )
{
if ( vcl->gc )
g_object_unref ( G_OBJECT(vcl->gc) );
vcl->gc = vik_viewport_new_gc_from_color ( vp, &(vcl->color), vcl->line_thickness );
}
static void coord_layer_post_read ( VikLayer *vl, VikViewport *vp, gboolean from_file )
{
VikCoordLayer *vcl = VIK_COORD_LAYER(vl);
if ( vcl->gc )
g_object_unref ( G_OBJECT(vcl->gc) );
vcl->gc = vik_viewport_new_gc_from_color ( vp, &(vcl->color), vcl->line_thickness );
}
static void coord_layer_update_gc ( VikCoordLayer *vcl, VikViewport *vp, const gchar *color )
{
GdkColor InitColor;
if ( vcl->color )
gdk_color_free ( vcl->color );
gdk_color_parse( color, &InitColor);
vcl->color = gdk_color_copy( &InitColor );
if ( vcl->gc )
g_object_unref ( G_OBJECT(vcl->gc) );
vcl->gc = vik_viewport_new_gc_from_color ( vp, vcl->color, vcl->line_thickness );
}
static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *vvp )
{
VikDEMLayer *rv = dem_layer_new ( vvp );
gint i;
/* TODO: share GCS between layers */
for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) {
if ( i == 0 )
rv->gcs[i] = vik_viewport_new_gc_from_color ( vvp, &(rv->color), UNUSED_LINE_THICKNESS );
else
rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_height_colors[i], UNUSED_LINE_THICKNESS );
}
for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ )
rv->gcsgradient[i] = vik_viewport_new_gc ( vvp, dem_gradient_colors[i], UNUSED_LINE_THICKNESS );
vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp );
return rv;
}
void vik_coord_layer_draw ( VikCoordLayer *vcl, gpointer data )
{
VikViewport *vp = (VikViewport *) data;
if ( !vcl->gc ) {
return;
}
if ( vik_viewport_get_coord_mode(vp) != VIK_COORD_UTM )
{
VikCoord left, right, left2, right2;
gdouble l, r, i, j;
gint x1, y1, x2, y2, smod = 1, mmod = 1;
gboolean mins = FALSE, secs = FALSE;
GdkGC *dgc = vik_viewport_new_gc_from_color(vp, vcl->color, vcl->line_thickness);
GdkGC *mgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/2, 1));
GdkGC *sgc = vik_viewport_new_gc_from_color(vp, vcl->color, MAX(vcl->line_thickness/5, 1));
vik_viewport_screen_to_coord ( vp, 0, 0, &left );
vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), 0, &right );
vik_viewport_screen_to_coord ( vp, 0, vik_viewport_get_height(vp), &left2 );
vik_viewport_screen_to_coord ( vp, vik_viewport_get_width(vp), vik_viewport_get_height(vp), &right2 );
#define CLINE(gc, c1, c2) { \
vik_viewport_coord_to_screen(vp, (c1), &x1, &y1); \
vik_viewport_coord_to_screen(vp, (c2), &x2, &y2); \
vik_viewport_draw_line (vp, (gc), x1, y1, x2, y2); \
}
l = left.east_west;
r = right.east_west;
if (60*fabs(l-r) < 4) {
secs = TRUE;
smod = MIN(6, (int)ceil(3600*fabs(l-r)/30.0));
}
if (fabs(l-r) < 4) {
mins = TRUE;
mmod = MIN(6, (int)ceil(60*fabs(l-r)/30.0));
}
for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
if (secs) {
for (j=i*60+1; j<(i+1)*60; j+=1.0) {
left.east_west = j/3600.0;
left2.east_west = j/3600.0;
if ((int)j % smod == 0) CLINE(sgc, &left, &left2);
}
}
if (mins) {
left.east_west = i/60.0;
left2.east_west = i/60.0;
if ((int)i % mmod == 0) CLINE(mgc, &left, &left2);
}
if ((int)i % 60 == 0) {
left.east_west = i/60.0;
left2.east_west = i/60.0;
CLINE(dgc, &left, &left2);
}
}
vik_viewport_screen_to_coord ( vp, 0, 0, &left );
l = left2.north_south;
r = left.north_south;
for (i=floor(l*60); i<ceil(r*60); i+=1.0) {
if (secs) {
for (j=i*60+1; j<(i+1)*60; j+=1.0) {
left.north_south = j/3600.0;
right.north_south = j/3600.0;
if ((int)j % smod == 0) CLINE(sgc, &left, &right);
}
}
if (mins) {
left.north_south = i/60.0;
right.north_south = i/60.0;
if ((int)i % mmod == 0) CLINE(mgc, &left, &right);
}
if ((int)i % 60 == 0) {
left.north_south = i/60.0;
right.north_south = i/60.0;
CLINE(dgc, &left, &right);
}
}
#undef CLINE
g_object_unref(dgc);
g_object_unref(sgc);
g_object_unref(mgc);
return;
}
if ( vik_viewport_get_coord_mode(vp) == VIK_COORD_UTM )
{
const struct UTM *center = (const struct UTM *)vik_viewport_get_center ( vp );
gdouble xmpp = vik_viewport_get_xmpp ( vp ), ympp = vik_viewport_get_ympp ( vp );
guint16 width = vik_viewport_get_width ( vp ), height = vik_viewport_get_height ( vp );
struct LatLon ll, ll2, min, max;
double lon;
int x1, x2;
struct UTM utm;
utm = *center;
utm.northing = center->northing - ( ympp * height / 2 );
a_coords_utm_to_latlon ( &utm, &ll );
utm.northing = center->northing + ( ympp * height / 2 );
a_coords_utm_to_latlon ( &utm, &ll2 );
{
/* find corner coords in lat/lon.
start at whichever is less: top or bottom left lon. goto whichever more: top or bottom right lon
*/
struct LatLon topleft, topright, bottomleft, bottomright;
struct UTM temp_utm;
temp_utm = *center;
temp_utm.easting -= (width/2)*xmpp;
temp_utm.northing += (height/2)*ympp;
a_coords_utm_to_latlon ( &temp_utm, &topleft );
temp_utm.easting += (width*xmpp);
a_coords_utm_to_latlon ( &temp_utm, &topright );
temp_utm.northing -= (height*ympp);
a_coords_utm_to_latlon ( &temp_utm, &bottomright );
temp_utm.easting -= (width*xmpp);
a_coords_utm_to_latlon ( &temp_utm, &bottomleft );
min.lon = (topleft.lon < bottomleft.lon) ? topleft.lon : bottomleft.lon;
max.lon = (topright.lon > bottomright.lon) ? topright.lon : bottomright.lon;
min.lat = (bottomleft.lat < bottomright.lat) ? bottomleft.lat : bottomright.lat;
max.lat = (topleft.lat > topright.lat) ? topleft.lat : topright.lat;
}
lon = ((double) ((long) ((min.lon)/ vcl->deg_inc))) * vcl->deg_inc;
ll.lon = ll2.lon = lon;
for (; ll.lon <= max.lon; ll.lon+=vcl->deg_inc, ll2.lon+=vcl->deg_inc )
{
a_coords_latlon_to_utm ( &ll, &utm );
x1 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
a_coords_latlon_to_utm ( &ll2, &utm );
x2 = ( (utm.easting - center->easting) / xmpp ) + (width / 2);
vik_viewport_draw_line (vp, vcl->gc, x1, height, x2, 0);
}
utm = *center;
utm.easting = center->easting - ( xmpp * width / 2 );
a_coords_utm_to_latlon ( &utm, &ll );
utm.easting = center->easting + ( xmpp * width / 2 );
a_coords_utm_to_latlon ( &utm, &ll2 );
/* really lat, just reusing a variable */
lon = ((double) ((long) ((min.lat)/ vcl->deg_inc))) * vcl->deg_inc;
ll.lat = ll2.lat = lon;
for (; ll.lat <= max.lat ; ll.lat+=vcl->deg_inc, ll2.lat+=vcl->deg_inc )
{
a_coords_latlon_to_utm ( &ll, &utm );
x1 = (height / 2) - ( (utm.northing - center->northing) / ympp );
a_coords_latlon_to_utm ( &ll2, &utm );
x2 = (height / 2) - ( (utm.northing - center->northing) / ympp );
vik_viewport_draw_line (vp, vcl->gc, width, x2, 0, x1);
}
}
}
