/[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 - (show annotations)
Fri Dec 7 15:53:41 2007 UTC (11 years, 9 months ago) by dpavlin
File size: 5316 byte(s)
exporter for KML placemarks
1 #!/usr/bin/perl
2
3 use warnings;
4 use strict;
5
6 use HTML::GoogleMaps;
7 use CGI;
8 use CGI::Carp qw/fatalsToBrowser/;
9 use File::Find;
10 use Data::Dump qw/dump/;
11
12 use lib '../lib';
13 use blib;
14 use NMEA;
15 use KML;
16
17 my $trace_path = '../nmea/';
18
19 # http://localhost/
20 my $map_key = 'ABQIAAAAVQ5szt9Jd8ws6vgfVQOEmhT2yXp_ZAY8_ufC3CFXhHIE1NvwkxQ1cKf0DwFJcwtpESJEI0hL8QgtYg';
21
22 my @traces;
23 find({ wanted => sub {
24 push @traces, $_ if -f $_;
25 }}, $trace_path);
26
27 my $q = CGI->new;
28
29 my $head = '';
30 my $html = join('', qq{
31 <h1>Select GPS NMEA dump</h1>
32 },
33 $q->start_form( -id => 'trace_frm' ),
34 $q->popup_menu(
35 -name => 'trace',
36 -values => [
37 map {
38 "$_ (" . (stat("$trace_path/$_"))[7] . " bytes)"
39 }
40 sort {
41 (stat("$trace_path/$a"))[9] <=> (stat("$trace_path/$b"))[9]
42 } @traces
43 ],
44 -onChange => 'trace_frm.submit()',
45 ),
46 $q->submit(
47 -name => 'show',
48 -value => 'Show trace'
49 ),
50 ' Export to ',
51 $q->submit(
52 -name => 'export',
53 -value => 'KML'
54 ),
55 $q->br,
56 '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 -onChange => 'trace_frm.submit()',
66 ),
67 ' points and ',
68 $q->popup_menu(
69 -name => 'placemark_filter',
70 -values => [ 'total of', 'every' ],
71 ),
72 $q->textfield(
73 -name => 'placemark_count',
74 -value => 5,
75 -size => 2,
76 -onChange => 'trace_frm.submit()',
77 ),
78 ' placemarks',
79 $q->end_form,
80 );
81
82
83
84 if ( my $trace = $q->param('trace') ) {
85 $trace =~ s/\s.+$//;
86
87 $trace = "$trace_path/$trace";
88
89 my $center_point;
90 my @points;
91 my @placemarks;
92
93 open(my $fh, '<', $trace) || die "can't open $trace: $!";
94 while( <$fh> ) {
95
96 my $hash = NMEA->line( $_ ) || next;
97
98 my $point = [ $hash->{lon}, $hash->{lat} ];
99 $center_point ||= $point;
100
101 push @points, $point;
102
103 push @placemarks, {
104 point => $point,
105 html => join('<br/>',
106 map {
107 ucfirst($_) . ': ' . $hash->{$_}
108 } ( qw/number time lat lon speed course/ )
109 ),
110 %$hash,
111 };
112
113 }
114 close($fh);
115
116 if ( $#points >= 0 ) {
117
118 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
125 warn "count: $count filter: $filter\n";
126
127 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 }
135 } elsif ( $count && $filter =~ m/total/ ) {
136 # total of
137 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 my $o = int($p * $d);
154 die "no element $p at $o from total of ",$#array + 1 unless $array[$o];
155 $code->( $array[$o] );
156 $code_calls++;
157 }
158 } else {
159 # show every
160 foreach my $e ( @array ) {
161 $code->( $e );
162 $code_calls++;
163 }
164 }
165 return $code_calls;
166 }
167
168 my $map = HTML::GoogleMaps->new(
169 key => $map_key,
170 width => '800px',
171 height => '600px',
172 );
173
174 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 my @filtered_placemarks;
188
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 push @filtered_placemarks, $placemark;
196 },
197 array => \@placemarks,
198 );
199
200 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 my ( $map_div, $map_script );
224 ( $head, $map_div, $map_script ) = $map->render;
225
226 $html .= join('',
227 $#points + 1, ' points from <tt>', $q->param('trace'), '</tt> showing ',
228 $points ? $points . ' points' . ( $placemarks ? ' and ' : '' ) : '',
229 $placemarks ? $placemarks . ' placemarks' : '',
230 qq{
231 $map_div
232 $map_script
233 <a href="http://aprs.gids.nl/nmea/">GPS - NMEA sentence information</a>
234 });
235
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
243 } else {
244 $html .= '<em>No points found for ' . $q->param('trace') . '</em>';
245 }
246
247 }
248
249 print $q->header;
250 print qq{
251 <html>
252 <head>
253 <title>Read GPS - NMEA sentence and display it on GoogleMaps</title>
254 $head
255 </head>
256 <body>
257 $html
258 </body>
259 </html>
260 };

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