/[maps]/web/googlemap.cgi
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Revision 30 - (hide annotations)
Fri Dec 7 15:53:41 2007 UTC (11 years, 10 months ago) by dpavlin
File size: 5316 byte(s)
exporter for KML placemarks
1 dpavlin 13 #!/usr/bin/perl
2    
3     use warnings;
4     use strict;
5    
6     use HTML::GoogleMaps;
7 dpavlin 14 use CGI;
8 dpavlin 13 use CGI::Carp qw/fatalsToBrowser/;
9 dpavlin 14 use File::Find;
10 dpavlin 13 use Data::Dump qw/dump/;
11    
12 dpavlin 27 use lib '../lib';
13     use blib;
14 dpavlin 14 use NMEA;
15 dpavlin 30 use KML;
16 dpavlin 14
17 dpavlin 27 my $trace_path = '../nmea/';
18 dpavlin 14
19 dpavlin 13 # http://localhost/
20     my $map_key = 'ABQIAAAAVQ5szt9Jd8ws6vgfVQOEmhT2yXp_ZAY8_ufC3CFXhHIE1NvwkxQ1cKf0DwFJcwtpESJEI0hL8QgtYg';
21    
22 dpavlin 14 my @traces;
23     find({ wanted => sub {
24     push @traces, $_ if -f $_;
25     }}, $trace_path);
26 dpavlin 13
27 dpavlin 14 my $q = CGI->new;
28 dpavlin 13
29 dpavlin 15 my $head = '';
30     my $html = join('', qq{
31 dpavlin 14 <h1>Select GPS NMEA dump</h1>
32     },
33 dpavlin 19 $q->start_form( -id => 'trace_frm' ),
34 dpavlin 14 $q->popup_menu(
35     -name => 'trace',
36     -values => [
37     map {
38     "$_ (" . (stat("$trace_path/$_"))[7] . " bytes)"
39     }
40     sort {
41 dpavlin 27 (stat("$trace_path/$a"))[9] <=> (stat("$trace_path/$b"))[9]
42 dpavlin 14 } @traces
43     ],
44 dpavlin 19 -onChange => 'trace_frm.submit()',
45 dpavlin 14 ),
46 dpavlin 30 $q->submit(
47     -name => 'show',
48     -value => 'Show trace'
49     ),
50     ' Export to ',
51     $q->submit(
52     -name => 'export',
53     -value => 'KML'
54     ),
55 dpavlin 23 $q->br,
56 dpavlin 25 'Draw ',
57     $q->popup_menu(
58     -name => 'points_filter',
59     -values => [ 'all', 'every', 'total of' ],
60     ),
61     $q->textfield(
62     -name => 'points_count',
63     -value => '',
64     -size => 2,
65 dpavlin 23 -onChange => 'trace_frm.submit()',
66     ),
67 dpavlin 25 ' points and ',
68 dpavlin 24 $q->popup_menu(
69     -name => 'placemark_filter',
70 dpavlin 25 -values => [ 'total of', 'every' ],
71 dpavlin 24 ),
72 dpavlin 23 $q->textfield(
73 dpavlin 25 -name => 'placemark_count',
74 dpavlin 23 -value => 5,
75     -size => 2,
76     -onChange => 'trace_frm.submit()',
77     ),
78 dpavlin 24 ' placemarks',
79 dpavlin 15 $q->end_form,
80     );
81 dpavlin 13
82 dpavlin 23
83    
84 dpavlin 14 if ( my $trace = $q->param('trace') ) {
85     $trace =~ s/\s.+$//;
86 dpavlin 13
87 dpavlin 14 $trace = "$trace_path/$trace";
88 dpavlin 13
89 dpavlin 24 my $center_point;
90     my @points;
91     my @placemarks;
92 dpavlin 13
93 dpavlin 14 open(my $fh, '<', $trace) || die "can't open $trace: $!";
94     while( <$fh> ) {
95 dpavlin 13
96 dpavlin 14 my $hash = NMEA->line( $_ ) || next;
97 dpavlin 13
98 dpavlin 23 my $point = [ $hash->{lon}, $hash->{lat} ];
99     $center_point ||= $point;
100 dpavlin 13
101 dpavlin 24 push @points, $point;
102 dpavlin 23
103 dpavlin 24 push @placemarks, {
104     point => $point,
105     html => join('<br/>',
106     map {
107     ucfirst($_) . ': ' . $hash->{$_}
108 dpavlin 27 } ( qw/number time lat lon speed course/ )
109 dpavlin 24 ),
110 dpavlin 30 %$hash,
111 dpavlin 24 };
112 dpavlin 23
113 dpavlin 14 }
114     close($fh);
115 dpavlin 13
116 dpavlin 25 if ( $#points >= 0 ) {
117 dpavlin 13
118 dpavlin 25 sub filter_array {
119     my $o = {@_};
120     my ( $count, $filter, $code ) =
121     ( $o->{count}, $o->{filter}, $o->{code} ) ;
122     confess "no CODE?" unless ref($code) eq 'CODE';
123     my @array = @{ $o->{array} };
124 dpavlin 23
125 dpavlin 25 warn "count: $count filter: $filter\n";
126 dpavlin 24
127 dpavlin 25 my $code_calls = 0;
128    
129     if ( $count && $filter =~ m/every/ ) {
130     foreach my $o ( 0 .. $#array ) {
131     next unless $o % $count == 0;
132     $code->( $array[$o] );
133     $code_calls++;
134 dpavlin 24 }
135 dpavlin 25 } elsif ( $count && $filter =~ m/total/ ) {
136 dpavlin 24 # total of
137 dpavlin 25 if ( $count < 2 ) {
138     # first
139     if ( $array[0]) {
140     $code->( $array[0] );
141     $code_calls++;
142     };
143     # last
144     if ( $count > 1 && $#array > 0 ) {
145     $code->( $array[$#array] );
146     $code_calls++;
147     };
148     return $code_calls;
149     }
150    
151     my $d = $#array / ( $count - 1 );
152     foreach my $p ( 0 .. $count - 1 ) {
153 dpavlin 24 my $o = int($p * $d);
154 dpavlin 25 die "no element $p at $o from total of ",$#array + 1 unless $array[$o];
155     $code->( $array[$o] );
156     $code_calls++;
157 dpavlin 24 }
158 dpavlin 25 } else {
159     # show every
160     foreach my $e ( @array ) {
161     $code->( $e );
162     $code_calls++;
163     }
164 dpavlin 24 }
165 dpavlin 25 return $code_calls;
166 dpavlin 24 }
167    
168 dpavlin 30 my $map = HTML::GoogleMaps->new(
169     key => $map_key,
170     width => '800px',
171     height => '600px',
172     );
173    
174 dpavlin 25 my @poly_points;
175     my $points = filter_array(
176     count => $q->param('points_count'),
177     filter => $q->param('points_filter'),
178     code => sub {
179     my $point = shift;
180     push @poly_points, $point;
181     },
182     array => \@points,
183     );
184    
185     die "hum?" unless $#poly_points == $points - 1;
186    
187 dpavlin 30 my @filtered_placemarks;
188 dpavlin 25
189     my $placemarks = filter_array(
190     count => $q->param('placemark_count'),
191     filter => $q->param('placemark_filter'),
192     code => sub {
193     my $placemark = shift;
194     $map->add_marker( %$placemark, noformat => 1 );
195 dpavlin 30 push @filtered_placemarks, $placemark;
196 dpavlin 25 },
197     array => \@placemarks,
198     );
199    
200 dpavlin 30 if ( my $export = $q->param('export') ) {
201     if ( $export eq 'KML' ) {
202     print $q->header(
203     -type => 'application/xhtml+xml',
204     ),
205     KML->output( placemarks => \@filtered_placemarks );
206     exit;
207     } else {
208     die "unknown export format $export";
209     }
210     }
211    
212    
213     #$map->center(point => "Zagreb, Hrvatska");
214    
215     #$map->zoom(10);
216     $map->v2_zoom(20);
217     $map->controls("large_map_control", "map_type_control");
218     $map->map_type('hybrid');
219     $map->center( $center_point ) if $q->param('line') && $center_point;
220    
221     $map->add_polyline( points => [ @poly_points ] ) if @poly_points;
222    
223 dpavlin 18 my ( $map_div, $map_script );
224     ( $head, $map_div, $map_script ) = $map->render;
225    
226 dpavlin 25 $html .= join('',
227     $#points + 1, ' points from <tt>', $q->param('trace'), '</tt> showing ',
228     $points ? $points . ' points' . ( $placemarks ? ' and ' : '' ) : '',
229 dpavlin 24 $placemarks ? $placemarks . ' placemarks' : '',
230     qq{
231 dpavlin 14 $map_div
232     $map_script
233     <a href="http://aprs.gids.nl/nmea/">GPS - NMEA sentence information</a>
234 dpavlin 18 });
235 dpavlin 29
236     my $stats = NMEA->stats;
237     $html .= '<table>';
238     foreach my $n ( keys %$stats ) {
239     $html .= "<tr><td>$n</td><td>" . $stats->{$n} . "</td></tr>";
240     }
241     $html .= '</table>';
242 dpavlin 18
243     } else {
244     $html .= '<em>No points found for ' . $q->param('trace') . '</em>';
245     }
246 dpavlin 13
247     }
248    
249 dpavlin 30 print $q->header;
250 dpavlin 13 print qq{
251 dpavlin 15 <html>
252     <head>
253     <title>Read GPS - NMEA sentence and display it on GoogleMaps</title>
254     $head
255     </head>
256     <body>
257     $html
258 dpavlin 13 </body>
259     </html>
260     };

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