Pileus Git - grits/blob - src/radar.c

   1 #include <config.h>
   2 #include <gtk/gtk.h>
   3 #include <gtk/gtkgl.h>
   4 #include <gdk/gdkkeysyms.h>
   5 #include <GL/gl.h>
   6 #include <math.h>
   7
   8 #include "rsl.h"
   9
  10 #include "radar.h"
  11
  12 static GtkWidget *rotate_button;
  13 static Radar *radar;
  14 static Sweep *sweep;
  15 static int nred, ngreen, nblue;
  16 static unsigned char red[256], green[256], blue[256];
  17
  18 static gboolean expose(GtkWidget *da, GdkEventExpose *event, gpointer user_data)
  19 {
  20         GdkGLContext *glcontext = gtk_widget_get_gl_context (da);
  21         GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (da);
  22
  23         /* draw in here */
  24         glPushMatrix();
  25
  26         glRotatef(0, 0, 0, 0);
  27
  28         glShadeModel(GL_FLAT);
  29
  30         glBegin(GL_QUADS);
  31
  32         int rayi;
  33         for (rayi = 0; rayi < sweep->h.nrays; rayi++) {
  34                 Ray *ray = sweep->ray[rayi];
  35
  36                 /* right and left with respect to north */
  37                 double right = ((ray->h.azimuth + ray->h.beam_width)*M_PI)/180.0;
  38                 double left  = ((ray->h.azimuth - ray->h.beam_width)*M_PI)/180.0;
  39
  40                 double rx = sin(right), ry = cos(right);
  41                 double lx = sin(left),  ly = cos(left);
  42
  43                 int nbins = ray->h.nbins;
  44                 //int nbins = 20;
  45                 int max_dist = nbins * ray->h.gate_size + ray->h.range_bin1;
  46                 int bini, dist = ray->h.range_bin1;
  47                 for (bini = 0; bini < nbins; bini++, dist += ray->h.gate_size) {
  48                         if (ray->range[bini] == BADVAL) continue;
  49
  50                         /* (find middle of bin) / scale for opengl */
  51                         double nd = ((double)dist - ((double)ray->h.gate_size)/2.) / (double)max_dist;
  52                         double fd = ((double)dist + ((double)ray->h.gate_size)/2.) / (double)max_dist;
  53
  54                         glColor3ub(
  55                                   red[(unsigned char)ray->h.f(ray->range[bini])],
  56                                 green[(unsigned char)ray->h.f(ray->range[bini])],
  57                                  blue[(unsigned char)ray->h.f(ray->range[bini])]
  58                         );
  59
  60                         glVertex3f(lx*nd, ly*nd, 0.); // near left
  61                         glVertex3f(lx*fd, ly*fd, 0.); // far  left
  62                         glVertex3f(rx*fd, ry*fd, 0.); // far  right
  63                         glVertex3f(rx*nd, ry*nd, 0.); // near right
  64
  65                 }
  66
  67                 g_print("\n");
  68         }
  69
  70         glEnd();
  71
  72         /* Print the color table */
  73         glBegin(GL_QUADS);
  74         int i;
  75         for (i = 0; i < nred; i++) {
  76                 glColor3ub(red[i], green[i], blue[i]);
  77                 glVertex3f(-1., (float)((i  ) - nred/2)/(nred/2), 0.); // bot left
  78                 glVertex3f(-1., (float)((i+1) - nred/2)/(nred/2), 0.); // top left
  79                 glVertex3f(-.9, (float)((i+1) - nred/2)/(nred/2), 0.); // top right
  80                 glVertex3f(-.9, (float)((i  ) - nred/2)/(nred/2), 0.); // bot right
  81         }
  82         glEnd();
  83
  84         glPopMatrix ();
  85
  86         return FALSE;
  87 }
  88
  89 gboolean radar_init(GtkDrawingArea *drawing, GtkNotebook *config)
  90 {
  91         /* Add configuration tab */
  92         GtkWidget *label = gtk_label_new("Radar");
  93         rotate_button = gtk_toggle_button_new_with_label("Rotate");
  94         gtk_notebook_append_page(GTK_NOTEBOOK(config), rotate_button, label);
  95
  96         /* Set up OpenGL Stuff */
  97         g_signal_connect(drawing, "expose-event", G_CALLBACK(expose), NULL);
  98
  99         /* Parse hard coded file.. */
 100         RSL_read_these_sweeps("0", NULL);
 101         radar = RSL_wsr88d_to_radar("/scratch/aweather/src/KABR_20080609_0224", "KABR");
 102         RSL_load_refl_color_table();
 103         RSL_get_color_table(RSL_RED_TABLE,   red,   &nred);
 104         RSL_get_color_table(RSL_GREEN_TABLE, green, &ngreen);
 105         RSL_get_color_table(RSL_BLUE_TABLE,  blue,  &nblue);
 106         if (radar->h.nvolumes < 1 || radar->v[0]->h.nsweeps < 1)
 107                 g_print("No sweeps found\n");
 108         sweep = radar->v[0]->sweep[0];
 109         RSL_volume_to_gif(radar->v[DZ_INDEX], "dz_sweep", 1024, 1024, 200.0);
 110 }