9 #include "aweather-gui.h"
10 #include "plugin-radar.h"
13 static Sweep *cur_sweep = NULL; // make this not global
14 static int nred, ngreen, nblue;
15 static char red[256], green[256], blue[256];
16 static guint sweep_tex = 0;
20 static guint8 get_alpha(guint8 db)
22 if (db == BADVAL) return 0;
23 if (db == RFVAL ) return 0;
24 if (db == APFLAG) return 0;
25 if (db == NOECHO) return 0;
26 if (db == 0 ) return 0;
27 //if (db > 60) return 0;
28 //else if (db < 10) return 0;
29 //else if (db < 25) return (db-10)*(255.0/15);
33 //#ifdef USE_TWO_BYTE_PRECISION
34 //#define F_FACTOR 100.0
35 //#define F_DR_FACTOR 1000.0
36 //#define F_DZ_RANGE_OFFSET 50
38 //#define F_FACTOR 2.0
39 //#define F_DR_FACTOR 10.0
40 //#define F_DZ_RANGE_OFFSET 32
43 //static float dz_f(Range x)
46 // return (((float)x-F_OFFSET)/F_FACTOR - F_DZ_RANGE_OFFSET);
47 // if (x == 0) return BADVAL;
48 // if (x == 1) return RFVAL;
49 // if (x == 2) return APFLAG;
50 // if (x == 3) return NOECHO;
54 /* Convert a sweep to an 2d array of data points */
55 static void bscan_sweep(Sweep *sweep, guint8 **data, int *width, int *height)
57 /* Calculate max number of bins */
59 for (i = 0; i < sweep->h.nrays; i++)
60 max_bins = MAX(max_bins, sweep->ray[i]->h.nbins);
62 /* Allocate buffer using max number of bins for each ray */
63 guint8 *buf = g_malloc0(sweep->h.nrays * max_bins * 4);
67 for (ri = 0; ri < sweep->h.nrays; ri++) {
68 Ray *ray = sweep->ray[ri];
69 for (bi = 0; bi < ray->h.nbins; bi++) {
70 /* copy RGBA into buffer */
71 //guint val = dz_f(ray->range[bi]);
72 guint val = ray->h.f(ray->range[bi]);
73 guint buf_i = (ri*max_bins+bi)*4;
74 buf[buf_i+0] = red[val];
75 buf[buf_i+1] = green[val];
76 buf[buf_i+2] = blue[val];
77 buf[buf_i+3] = get_alpha(val);
83 *height = sweep->h.nrays;
87 /* Load a sweep as the active texture */
88 static void load_sweep(Sweep *sweep)
93 bscan_sweep(sweep, &data, &width, &height);
94 glGenTextures(1, &sweep_tex);
95 glBindTexture(GL_TEXTURE_2D, sweep_tex);
96 glPixelStorei(GL_PACK_ALIGNMENT, 1);
97 glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
98 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
99 glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
100 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
102 gdk_window_invalidate_rect(drawing->window, &drawing->allocation, FALSE);
103 gdk_window_process_updates(drawing->window, FALSE);
106 /* Load the default sweep */
107 static gboolean configure(GtkWidget *da, GdkEventConfigure *event, AWeatherGui *gui)
109 //g_message("radar:configure");
110 aweather_gui_gl_begin(gui);
111 Sweep *first = radar->v[0]->sweep[0];
112 if (cur_sweep == NULL)
114 aweather_gui_gl_end(gui);
119 static gboolean expose(GtkWidget *da, GdkEventExpose *event, AWeatherGui *gui)
121 //g_message("radar:expose");
122 aweather_gui_gl_begin(gui);
123 Sweep *sweep = cur_sweep;
127 glMatrixMode(GL_MODELVIEW);
129 glBindTexture(GL_TEXTURE_2D, sweep_tex);
130 glEnable(GL_TEXTURE_2D);
132 glBegin(GL_QUAD_STRIP);
133 for (int ri = 0; ri <= sweep->h.nrays+1; ri++) {
134 /* Do the first sweep twice to complete the last Quad */
135 Ray *ray = sweep->ray[ri % sweep->h.nrays];
137 /* right and left looking out from radar */
138 double left = ((ray->h.azimuth - ((double)ray->h.beam_width/2.))*M_PI)/180.0;
139 //double right = ((ray->h.azimuth + ((double)ray->h.beam_width/2.))*M_PI)/180.0;
141 double lx = sin(left);
142 double ly = cos(left);
144 double near_dist = ray->h.range_bin1;
145 double far_dist = ray->h.nbins*ray->h.gate_size + ray->h.range_bin1;
147 /* (find middle of bin) / scale for opengl */
149 glTexCoord2f(0.0, (double)ri/sweep->h.nrays);
150 glVertex3f(lx*near_dist, ly*near_dist, 2.0);
153 glTexCoord2f(1.0, (double)ri/sweep->h.nrays);
154 glVertex3f(lx*far_dist, ly*far_dist, 2.0);
156 //g_print("ri=%d, nr=%d, bw=%f\n", _ri, sweep->h.nrays, sweep->h.beam_width);
162 //glTexCoord2d( 0., 0.); glVertex3f(-1., 0., 0.); // bot left
163 //glTexCoord2d( 0., 1.); glVertex3f(-1., 1., 0.); // top left
164 //glTexCoord2d( 1., 1.); glVertex3f( 0., 1., 0.); // top right
165 //glTexCoord2d( 1., 0.); glVertex3f( 0., 0., 0.); // bot right
168 /* Print the color table */
169 glDisable(GL_TEXTURE_2D);
170 glMatrixMode(GL_MODELVIEW ); glPushMatrix(); glLoadIdentity();
171 glMatrixMode(GL_PROJECTION); glPushMatrix(); glLoadIdentity();
174 for (i = 0; i < nred; i++) {
175 glColor4ub(red[i], green[i], blue[i], get_alpha(i));
176 glVertex3f(-1.0, (float)((i ) - nred/2)/(nred/2), 0.0); // bot left
177 glVertex3f(-1.0, (float)((i+1) - nred/2)/(nred/2), 0.0); // top left
178 glVertex3f(-0.9, (float)((i+1) - nred/2)/(nred/2), 0.0); // top right
179 glVertex3f(-0.9, (float)((i ) - nred/2)/(nred/2), 0.0); // bot right
182 glMatrixMode(GL_PROJECTION); glPopMatrix();
183 glMatrixMode(GL_MODELVIEW ); glPopMatrix();
185 aweather_gui_gl_end(gui);
189 gboolean radar_init(AWeatherGui *gui)
191 drawing = GTK_WIDGET(aweather_gui_get_drawing(gui));
192 GtkNotebook *config = aweather_gui_get_tabs(gui);
194 /* Parse hard coded file.. */
195 RSL_read_these_sweeps("all", NULL);
196 //RSL_read_these_sweeps("all", NULL);
197 radar = RSL_wsr88d_to_radar("/scratch/aweather/data/level2/KNQA_20090501_1925.raw", "KNQA");
198 RSL_load_refl_color_table();
199 RSL_get_color_table(RSL_RED_TABLE, red, &nred);
200 RSL_get_color_table(RSL_GREEN_TABLE, green, &ngreen);
201 RSL_get_color_table(RSL_BLUE_TABLE, blue, &nblue);
202 if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1)
203 g_print("No sweeps found\n");
205 /* Add configuration tab */
206 GtkWidget *scroll = gtk_scrolled_window_new(NULL, NULL);
207 GtkWidget *hbox = gtk_hbox_new(TRUE, 0);
208 GtkWidget *button = NULL;
210 for (vi = 0; vi < radar->h.nvolumes; vi++) {
211 Volume *vol = radar->v[vi];
212 if (vol == NULL) continue;
213 GtkWidget *vbox = gtk_vbox_new(TRUE, 0);
214 gtk_box_pack_start(GTK_BOX(hbox), vbox, TRUE, TRUE, 0);
215 for (si = 0; si < vol->h.nsweeps; si++) {
216 Sweep *sweep = vol->sweep[si];
217 if (sweep == NULL) continue;
218 char *label = g_strdup_printf("Tilt: %.2f (%s)", sweep->h.elev, vol->h.type_str);
219 button = gtk_radio_button_new_with_label_from_widget(GTK_RADIO_BUTTON(button), label);
220 g_signal_connect_swapped(button, "clicked", G_CALLBACK(load_sweep), sweep);
221 gtk_box_pack_start(GTK_BOX(vbox), button, TRUE, TRUE, 0);
225 GtkWidget *label = gtk_label_new("Radar");
226 gtk_scrolled_window_add_with_viewport(GTK_SCROLLED_WINDOW(scroll), hbox);
227 gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scroll), GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
228 gtk_notebook_append_page(GTK_NOTEBOOK(config), scroll, label);
230 /* Set up OpenGL Stuff */
231 g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), gui);
232 g_signal_connect(drawing, "configure-event", G_CALLBACK(configure), gui);