X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/e6c5065751afd923190d5281ba8f02479e653cbc..e8cf3d97c45cec2edbf535498e87e390543b1302:/src/vikdemlayer.c diff --git a/src/vikdemlayer.c b/src/vikdemlayer.c index c9806282..c0324f43 100644 --- a/src/vikdemlayer.c +++ b/src/vikdemlayer.c @@ -63,7 +63,7 @@ #define SRTM_CACHE_TEMPLATE "%ssrtm3-%s%s%c%02d%c%03d.hgt.zip" #define SRTM_HTTP_SITE "dds.cr.usgs.gov" -#define SRTM_HTTP_URI "/srtm/version2/SRTM3/" +#define SRTM_HTTP_URI "/srtm/version2_1/SRTM3/" #ifdef VIK_CONFIG_DEM24K #define DEM24K_DOWNLOAD_SCRIPT "dem24k.pl" @@ -97,6 +97,12 @@ static gchar *params_source[] = { NULL }; +static gchar *params_type[] = { + N_("Absolute height"), + N_("Height gradient"), + NULL +}; + enum { DEM_SOURCE_SRTM, #ifdef VIK_CONFIG_DEM24K DEM_SOURCE_DEM24K, @@ -104,17 +110,23 @@ enum { DEM_SOURCE_SRTM, DEM_SOURCE_NONE, }; +enum { DEM_TYPE_HEIGHT = 0, + DEM_TYPE_GRADIENT, + DEM_TYPE_NONE, +}; + static VikLayerParam dem_layer_params[] = { { "files", VIK_LAYER_PARAM_STRING_LIST, VIK_LAYER_GROUP_NONE, N_("DEM Files:"), VIK_LAYER_WIDGET_FILELIST }, { "source", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Download Source:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_source, NULL }, { "color", VIK_LAYER_PARAM_STRING, VIK_LAYER_GROUP_NONE, N_("Color:"), VIK_LAYER_WIDGET_ENTRY }, + { "type", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Type:"), VIK_LAYER_WIDGET_RADIOGROUP_STATIC, params_type, NULL }, { "min_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Min Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, { "max_elev", VIK_LAYER_PARAM_DOUBLE, VIK_LAYER_GROUP_NONE, N_("Max Elev:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 0 }, { "line_thickness", VIK_LAYER_PARAM_UINT, VIK_LAYER_GROUP_NONE, N_("Line Thickness:"), VIK_LAYER_WIDGET_SPINBUTTON, param_scales + 1 }, }; -enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_MIN_ELEV, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS }; +enum { PARAM_FILES=0, PARAM_SOURCE, PARAM_COLOR, PARAM_TYPE, PARAM_MIN_ELEV, PARAM_MAX_ELEV, PARAM_LINE_THICKNESS, NUM_PARAMS }; static gpointer dem_layer_download_create ( VikWindow *vw, VikViewport *vvp); static gboolean dem_layer_download_release ( VikDEMLayer *vdl, GdkEventButton *event, VikViewport *vvp ); @@ -130,113 +142,42 @@ static VikToolInterface dem_tools[] = { /* */ -static gchar *dem_colors[] = { +static gchar *dem_height_colors[] = { "#0000FF", -"#9b793c", -"#9c7d40", -"#9d8144", -"#9e8549", -"#9f894d", -"#a08d51", -"#a29156", -"#a3955a", -"#a4995e", -"#a69d63", -"#a89f65", -"#aaa267", -"#ada569", -"#afa76b", -"#b1aa6d", -"#b4ad6f", -"#b6b071", -"#b9b373", -"#bcb676", -"#beb978", -"#c0bc7a", -"#c2c07d", -"#c4c37f", -"#c6c681", -"#c8ca84", -"#cacd86", -"#ccd188", -"#cfd58b", -"#c2ce84", -"#b5c87e", -"#a9c278", -"#9cbb71", -"#8fb56b", -"#83af65", -"#76a95e", -"#6aa358", -"#5e9d52", -"#63a055", -"#69a458", -"#6fa85c", -"#74ac5f", -"#7ab063", -"#80b467", -"#86b86a", -"#8cbc6e", -"#92c072", -"#94c175", -"#97c278", -"#9ac47c", -"#9cc57f", -"#9fc682", -"#a2c886", -"#a4c989", -"#a7cb8d", -"#aacd91", -"#afce99", -"#b5d0a1", -"#bbd2aa", -"#c0d3b2", -"#c6d5ba", -"#ccd7c3", -"#d1d9cb", -"#d7dbd4", -"#DDDDDD", -"#e0e0e0", -"#e4e4e4", -"#e8e8e8", -"#ebebeb", -"#efefef", -"#f3f3f3", -"#f7f7f7", -"#fbfbfb", -"#ffffff" +"#9b793c", "#9c7d40", "#9d8144", "#9e8549", "#9f894d", "#a08d51", "#a29156", "#a3955a", "#a4995e", "#a69d63", +"#a89f65", "#aaa267", "#ada569", "#afa76b", "#b1aa6d", "#b4ad6f", "#b6b071", "#b9b373", "#bcb676", "#beb978", +"#c0bc7a", "#c2c07d", "#c4c37f", "#c6c681", "#c8ca84", "#cacd86", "#ccd188", "#cfd58b", "#c2ce84", "#b5c87e", +"#a9c278", "#9cbb71", "#8fb56b", "#83af65", "#76a95e", "#6aa358", "#5e9d52", "#63a055", "#69a458", "#6fa85c", +"#74ac5f", "#7ab063", "#80b467", "#86b86a", "#8cbc6e", "#92c072", "#94c175", "#97c278", "#9ac47c", "#9cc57f", +"#9fc682", "#a2c886", "#a4c989", "#a7cb8d", "#aacd91", "#afce99", "#b5d0a1", "#bbd2aa", "#c0d3b2", "#c6d5ba", +"#ccd7c3", "#d1d9cb", "#d7dbd4", "#DDDDDD", "#e0e0e0", "#e4e4e4", "#e8e8e8", "#ebebeb", "#efefef", "#f3f3f3", +"#f7f7f7", "#fbfbfb", "#ffffff" }; +static const guint DEM_N_HEIGHT_COLORS = sizeof(dem_height_colors)/sizeof(dem_height_colors[0]); + /* -"#9b793c", -"#9e8549", -"#a29156", -"#a69d63", -"#ada569", -"#b4ad6f", -"#bcb676", -"#c2c07d", -"#c8ca84", -"#cfd58b", -"#a9c278", -"#83af65", -"#5e9d52", -"#6fa85c", -"#80b467", -"#92c072", -"#9ac47c", -"#a2c886", -"#aacd91", -"#bbd2aa", -"#ccd7c3", -"#DDDDDD", -"#e8e8e8", -"#f3f3f3", -"#FFFFFF" +"#9b793c", "#9e8549", "#a29156", "#a69d63", "#ada569", "#b4ad6f", "#bcb676", "#c2c07d", "#c8ca84", "#cfd58b", +"#a9c278", "#83af65", "#5e9d52", "#6fa85c", "#80b467", "#92c072", "#9ac47c", "#a2c886", "#aacd91", "#bbd2aa", +"#ccd7c3", "#DDDDDD", "#e8e8e8", "#f3f3f3", "#FFFFFF" }; */ -static const guint DEM_N_COLORS = sizeof(dem_colors)/sizeof(dem_colors[0]); +static gchar *dem_gradient_colors[] = { +"#AAAAAA" +"#000000", "#000011", "#000022", "#000033", "#000044", "#00004c", "#000055", "#00005d", "#000066", "#00006e", +"#000077", "#00007f", "#000088", "#000090", "#000099", "#0000a1", "#0000aa", "#0000b2", "#0000bb", "#0000c3", +"#0000cc", "#0000d4", "#0000dd", "#0000e5", "#0000ee", "#0000f6", "#0000ff", "#0008f7", "#0011ee", "#0019e6", +"#0022dd", "#002ad5", "#0033cc", "#003bc4", "#0044bb", "#004cb3", "#0055aa", "#005da2", "#006699", "#006e91", +"#007788", "#007f80", "#008877", "#00906f", "#009966", "#00a15e", "#00aa55", "#00b24d", "#00bb44", "#00c33c", +"#00cc33", "#00d42b", "#00dd22", "#00e51a", "#00ee11", "#00f609", "#00ff00", "#08f700", "#11ee00", "#19e600", +"#22dd00", "#2ad500", "#33cc00", "#3bc400", "#44bb00", "#4cb300", "#55aa00", "#5da200", "#669900", "#6e9100", +"#778800", "#7f8000", "#887700", "#906f00", "#996600", "#a15e00", "#aa5500", "#b24d00", "#bb4400", "#c33c00", +"#cc3300", "#d42b00", "#dd2200", "#e51a00", "#ee1100", "#f60900", "#ff0000", +"#FFFFFF" +}; + +static const guint DEM_N_GRADIENT_COLORS = sizeof(dem_gradient_colors)/sizeof(dem_gradient_colors[0]); VikLayerInterface vik_dem_layer_interface = { @@ -255,7 +196,7 @@ VikLayerInterface vik_dem_layer_interface = { (VikLayerFuncCreate) vik_dem_layer_create, (VikLayerFuncRealize) NULL, - dem_layer_post_read, + (VikLayerFuncPostRead) dem_layer_post_read, (VikLayerFuncFree) vik_dem_layer_free, (VikLayerFuncProperties) NULL, @@ -291,12 +232,14 @@ struct _VikDEMLayer { VikLayer vl; GdkGC *gc; GdkGC **gcs; + GdkGC **gcsgradient; GList *files; gdouble min_elev; gdouble max_elev; guint8 line_thickness; gchar *color; guint source; + guint type; }; GType vik_dem_layer_get_type () @@ -334,8 +277,11 @@ static VikDEMLayer *dem_layer_unmarshall( guint8 *data, gint len, VikViewport *v gint i; /* TODO: share GCS between layers */ - for ( i = 0; i < DEM_N_COLORS; i++ ) - rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_colors[i], rv->line_thickness ); + for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) + rv->gcs[i] = vik_viewport_new_gc ( vvp, dem_height_colors[i], rv->line_thickness ); + + for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) + rv->gcsgradient[i] = vik_viewport_new_gc ( vvp, dem_gradient_colors[i], rv->line_thickness ); vik_layer_unmarshall_params ( VIK_LAYER(rv), data, len, vvp ); return rv; @@ -347,6 +293,7 @@ gboolean dem_layer_set_param ( VikDEMLayer *vdl, guint16 id, VikLayerParamData d { case PARAM_COLOR: if ( vdl->color ) g_free ( vdl->color ); vdl->color = g_strdup ( data.s ); break; case PARAM_SOURCE: vdl->source = data.u; break; + case PARAM_TYPE: vdl->type = data.u; break; case PARAM_MIN_ELEV: vdl->min_elev = data.d; break; case PARAM_MAX_ELEV: vdl->max_elev = data.d; break; case PARAM_LINE_THICKNESS: if ( data.u >= 1 && data.u <= 15 ) vdl->line_thickness = data.u; break; @@ -362,6 +309,7 @@ static VikLayerParamData dem_layer_get_param ( VikDEMLayer *vdl, guint16 id ) { case PARAM_FILES: rv.sl = vdl->files; break; case PARAM_SOURCE: rv.u = vdl->source; break; + case PARAM_TYPE: rv.u = vdl->type; break; case PARAM_COLOR: rv.s = vdl->color ? vdl->color : ""; break; case PARAM_MIN_ELEV: rv.d = vdl->min_elev; break; case PARAM_MAX_ELEV: rv.d = vdl->max_elev; break; @@ -390,25 +338,35 @@ VikDEMLayer *vik_dem_layer_new ( ) vdl->gc = NULL; - vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_COLORS); + vdl->gcs = g_malloc(sizeof(GdkGC *)*DEM_N_HEIGHT_COLORS); + vdl->gcsgradient = g_malloc(sizeof(GdkGC *)*DEM_N_GRADIENT_COLORS); /* make new gcs only if we need it (copy layer -> use old) */ vdl->min_elev = 0.0; vdl->max_elev = 1000.0; vdl->source = DEM_SOURCE_SRTM; + vdl->type = DEM_TYPE_HEIGHT; vdl->line_thickness = 3; vdl->color = NULL; return vdl; } +static inline guint16 get_height_difference(gint16 elev, gint16 new_elev) +{ + if(new_elev == VIK_DEM_INVALID_ELEVATION) + return 0; + else + return abs(new_elev - elev); +} + static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM *dem ) { - VikDEMColumn *column; + VikDEMColumn *column, *prevcolumn, *nextcolumn; struct LatLon dem_northeast, dem_southwest; - gdouble max_lat, max_lon, min_lat, min_lon; + gdouble max_lat, max_lon, min_lat, min_lon; /**** Check if viewport and DEM data overlap ****/ @@ -485,7 +443,7 @@ static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM * gint16 elev; - guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 40 ); /* todo: smarter calculation. */ + guint skip_factor = ceil ( vik_viewport_get_xmpp(vp) / 80 ); /* todo: smarter calculation. */ gdouble nscale_deg = dem->north_scale / ((gdouble) 3600); gdouble escale_deg = dem->east_scale / ((gdouble) 3600); @@ -506,36 +464,120 @@ static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM * end_lon = ceil (end_lon_as / dem->east_scale) * escale_deg; vik_dem_east_north_to_xy ( dem, start_lon_as, start_lat_as, &start_x, &start_y ); + guint gradient_skip_factor = 1; + if(vdl->type == DEM_TYPE_GRADIENT) + gradient_skip_factor = skip_factor; /* verify sane elev interval */ if ( vdl->max_elev <= vdl->min_elev ) vdl->max_elev = vdl->min_elev + 1; - for ( x=start_x, counter.lon = start_lon; counter.lon <= end_lon; counter.lon += escale_deg * skip_factor, x += skip_factor ) { - if ( x > 0 && x < dem->n_columns ) { + for ( x=start_x, counter.lon = start_lon; counter.lon <= end_lon+escale_deg*skip_factor; counter.lon += escale_deg * skip_factor, x += skip_factor ) { + // NOTE: ( counter.lon <= end_lon + ESCALE_DEG*SKIP_FACTOR ) is neccessary so in high zoom modes, + // the leftmost column does also get drawn, if the center point is out of viewport. + if ( x >= 0 && x < dem->n_columns ) { column = g_ptr_array_index ( dem->columns, x ); + // get previous and next column. catch out-of-bound. + gint32 new_x = x; + new_x -= gradient_skip_factor; + if(new_x < 1) + prevcolumn = g_ptr_array_index ( dem->columns, x+1); + else + prevcolumn = g_ptr_array_index ( dem->columns, new_x); + new_x = x; + new_x += gradient_skip_factor; + if(new_x >= dem->n_columns) + nextcolumn = g_ptr_array_index ( dem->columns, x-1); + else + nextcolumn = g_ptr_array_index ( dem->columns, new_x); + for ( y=start_y, counter.lat = start_lat; counter.lat <= end_lat; counter.lat += nscale_deg * skip_factor, y += skip_factor ) { if ( y > column->n_points ) break; - elev = column->points[y]; - if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) - elev=vdl->min_elev; - if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) - elev=vdl->max_elev; + elev = column->points[y]; + // calculate bounding box for drawing + gint box_x, box_y, box_width, box_height; + struct LatLon box_c; + box_c = counter; + box_c.lat += (nscale_deg * skip_factor)/2; + box_c.lon -= (escale_deg * skip_factor)/2; + vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); + vik_viewport_coord_to_screen(vp, &tmp, &box_x, &box_y); + // catch box at borders + if(box_x < 0) + box_x = 0; + if(box_y < 0) + box_y = 0; + box_c.lat -= nscale_deg * skip_factor; + box_c.lon += escale_deg * skip_factor; + vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &box_c); + vik_viewport_coord_to_screen(vp, &tmp, &box_width, &box_height); + box_width -= box_x; + box_height -= box_y; + // catch box at borders + if(box_width < 0 || box_height < 0) + continue; // skip this. this is out of our viewport anyway. FIXME: why? + + if(vdl->type == DEM_TYPE_HEIGHT) { + if ( elev != VIK_DEM_INVALID_ELEVATION && elev < vdl->min_elev ) + elev=vdl->min_elev; + if ( elev != VIK_DEM_INVALID_ELEVATION && elev > vdl->max_elev ) + elev=vdl->max_elev; + } { - gint a, b; - - vik_coord_load_from_latlon(&tmp, vik_viewport_get_coord_mode(vp), &counter); - vik_viewport_coord_to_screen(vp, &tmp, &a, &b); - if ( elev == VIK_DEM_INVALID_ELEVATION ) - ; /* don't draw it */ - else if ( elev <= 0 ) - vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 ); - else - vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_COLORS-2))+1], TRUE, a-2, b-2, 4, 4 ); + if(box_width < 0 || box_height < 0) // FIXME: why does this happen? + continue; + + if(vdl->type == DEM_TYPE_GRADIENT) { + if( elev == VIK_DEM_INVALID_ELEVATION ) { + /* don't draw it */ + } else { + // calculate and sum gradient in all directions + gint16 change = 0; + gint32 new_y; + + // calculate gradient from height points all around the current one + new_y = y - gradient_skip_factor; + if(new_y < 0) + new_y = y; + change += get_height_difference(elev, prevcolumn->points[new_y]); + change += get_height_difference(elev, column->points[new_y]); + change += get_height_difference(elev, nextcolumn->points[new_y]); + + change += get_height_difference(elev, prevcolumn->points[y]); + change += get_height_difference(elev, nextcolumn->points[y]); + + new_y = y + gradient_skip_factor; + if(new_y >= column->n_points) + new_y = y; + change += get_height_difference(elev, prevcolumn->points[new_y]); + change += get_height_difference(elev, column->points[new_y]); + change += get_height_difference(elev, nextcolumn->points[new_y]); + + change = change / ((skip_factor > 1) ? log(skip_factor) : 0.55); // FIXME: better calc. + + if(change < vdl->min_elev) + change = vdl->min_elev; + + if(change > vdl->max_elev) + change = vdl->max_elev; + + // void vik_viewport_draw_rectangle ( VikViewport *vvp, GdkGC *gc, gboolean filled, gint x1, gint y1, gint x2, gint y2 ); + vik_viewport_draw_rectangle(vp, vdl->gcsgradient[(gint)floor((change - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_GRADIENT_COLORS-2))+1], TRUE, box_x, box_y, box_width, box_height); + } + } else { + if(vdl->type == DEM_TYPE_HEIGHT) { + if ( elev == VIK_DEM_INVALID_ELEVATION ) + ; /* don't draw it */ + else if ( elev <= 0 ) + vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, box_x, box_y, box_width, box_height); + else + vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_HEIGHT_COLORS-2))+1], TRUE, box_x, box_y, box_width, box_height); + } + } } } /* for y= */ } @@ -617,9 +659,9 @@ static void vik_dem_layer_draw_dem ( VikDEMLayer *vdl, VikViewport *vp, VikDEM * if ( elev == VIK_DEM_INVALID_ELEVATION ) ; /* don't draw it */ else if ( elev <= 0 ) - vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-2, b-2, 4, 4 ); + vik_viewport_draw_rectangle(vp, vdl->gcs[0], TRUE, a-1, b-1, 2, 2 ); else - vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_COLORS-2))+1], TRUE, a-2, b-2, 4, 4 ); + vik_viewport_draw_rectangle(vp, vdl->gcs[(gint)floor((elev - vdl->min_elev)/(vdl->max_elev - vdl->min_elev)*(DEM_N_HEIGHT_COLORS-2))+1], TRUE, a-1, b-1, 2, 2 ); } } /* for y= */ } @@ -691,10 +733,15 @@ void vik_dem_layer_free ( VikDEMLayer *vdl ) g_free ( vdl->color ); if ( vdl->gcs ) - for ( i = 0; i < DEM_N_COLORS; i++ ) + for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) g_object_unref ( vdl->gcs[i] ); g_free ( vdl->gcs ); + if ( vdl->gcsgradient ) + for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) + g_object_unref ( vdl->gcsgradient[i] ); + g_free ( vdl->gcsgradient ); + a_dems_list_free ( vdl->files ); } @@ -717,8 +764,11 @@ VikDEMLayer *vik_dem_layer_create ( VikViewport *vp ) gint i; /* TODO: share GCS between layers */ - for ( i = 0; i < DEM_N_COLORS; i++ ) - vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_colors[i], vdl->line_thickness ); + for ( i = 0; i < DEM_N_HEIGHT_COLORS; i++ ) + vdl->gcs[i] = vik_viewport_new_gc ( vp, dem_height_colors[i], vdl->line_thickness ); + + for ( i = 0; i < DEM_N_GRADIENT_COLORS; i++ ) + vdl->gcsgradient[i] = vik_viewport_new_gc ( vp, dem_gradient_colors[i], vdl->line_thickness ); dem_layer_update_gc ( vdl, vp, "red" ); return vdl; @@ -763,8 +813,8 @@ static void srtm_dem_download_thread ( DEMDownloadParams *p, gpointer threaddata (intlon >= 0) ? 'E' : 'W', ABS(intlon) ); - static DownloadOptions options = { NULL, 0, a_check_map_file }; - a_http_download_get_url ( SRTM_HTTP_SITE, src_fn, p->dest, &options ); + static DownloadOptions options = { 0, NULL, 0, a_check_map_file }; + a_http_download_get_url ( SRTM_HTTP_SITE, src_fn, p->dest, &options, NULL ); g_free ( src_fn ); }