/[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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Annotation of /web/googlemap.cgi

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Revision 23 - (hide annotations)
Thu Dec 6 14:03:00 2007 UTC (11 years, 5 months ago) by dpavlin
File size: 2841 byte(s)
draw polylines for trace and optionally every nth placemark
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 14 use lib '../';
13     use NMEA;
14    
15     my $trace_path = '/home/dpavlin/x/openmoko/gps/';
16    
17 dpavlin 13 # http://localhost/
18     my $map_key = 'ABQIAAAAVQ5szt9Jd8ws6vgfVQOEmhT2yXp_ZAY8_ufC3CFXhHIE1NvwkxQ1cKf0DwFJcwtpESJEI0hL8QgtYg';
19    
20 dpavlin 14 my @traces;
21     find({ wanted => sub {
22     push @traces, $_ if -f $_;
23     }}, $trace_path);
24 dpavlin 13
25 dpavlin 14 my $q = CGI->new;
26 dpavlin 13
27 dpavlin 14 print $q->header;
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     (stat("$trace_path/$a"))[10] <=> (stat("$trace_path/$b"))[10]
42     } @traces
43     ],
44 dpavlin 19 -onChange => 'trace_frm.submit()',
45 dpavlin 14 ),
46     $q->submit( -value => 'Show trace' ),
47 dpavlin 23 $q->br,
48     'Draw as ',
49     $q->checkbox(
50     -name => 'line',
51     -onChange => 'trace_frm.submit()',
52     ),
53     ' with every ',
54     $q->textfield(
55     -name => 'nth_placemark',
56     -value => 5,
57     -size => 2,
58     -onChange => 'trace_frm.submit()',
59     ),
60     '<sup>th</sup> placemark',
61 dpavlin 15 $q->end_form,
62     );
63 dpavlin 13
64 dpavlin 23
65     my @points;
66     my $center_point;
67    
68 dpavlin 14 if ( my $trace = $q->param('trace') ) {
69     $trace =~ s/\s.+$//;
70 dpavlin 13
71 dpavlin 14 my $map = HTML::GoogleMaps->new(key => $map_key);
72     #$map->center(point => "Zagreb, Hrvatska");
73 dpavlin 13
74 dpavlin 14 $trace = "$trace_path/$trace";
75 dpavlin 13
76 dpavlin 14 my $points = 0;
77 dpavlin 23 my $nth_placemark = $q->param('nth_placemark');
78 dpavlin 13
79 dpavlin 14 open(my $fh, '<', $trace) || die "can't open $trace: $!";
80     while( <$fh> ) {
81 dpavlin 13
82 dpavlin 14 my $hash = NMEA->line( $_ ) || next;
83 dpavlin 13
84 dpavlin 23 my $point = [ $hash->{lon}, $hash->{lat} ];
85     $center_point ||= $point;
86 dpavlin 13
87 dpavlin 23
88     if ( $q->param('line') ) {
89     push @points, $point;
90     }
91    
92     if ( ! $q->param('line') ||
93     $nth_placemark && $points % $nth_placemark == 0
94     ) {
95    
96     $map->add_marker(
97     point => $point,
98     html => join('<br/>',
99     map {
100     ucfirst($_) . ': ' . $hash->{$_}
101     } ( qw/time lat lon speed course/ )
102     ),
103     );
104    
105     }
106    
107 dpavlin 14 $points++;
108 dpavlin 23
109 dpavlin 14 }
110     close($fh);
111 dpavlin 13
112 dpavlin 18 if ( $points > 0 ) {
113 dpavlin 13
114 dpavlin 18 #$map->zoom(10);
115     #$map->v2_zoom(0);
116     $map->controls("large_map_control", "map_type_control");
117     $map->map_type('hybrid');
118 dpavlin 23 $map->center( $center_point ) if $q->param('line') && $center_point;
119 dpavlin 13
120 dpavlin 23 if ( $q->param('line') ) {
121     warn "## points = ",dump( @points );
122     $map->add_polyline( points => [ @points ] );
123     }
124    
125 dpavlin 18 my ( $map_div, $map_script );
126     ( $head, $map_div, $map_script ) = $map->render;
127    
128     $html .= join('', qq{
129 dpavlin 14 <h1>Plotting $points points from }, $q->param('trace'), qq{</h1>
130     $map_div
131     $map_script
132     <a href="http://aprs.gids.nl/nmea/">GPS - NMEA sentence information</a>
133 dpavlin 18 });
134    
135     } else {
136     $html .= '<em>No points found for ' . $q->param('trace') . '</em>';
137     }
138 dpavlin 13
139     }
140    
141     print qq{
142 dpavlin 15 <html>
143     <head>
144     <title>Read GPS - NMEA sentence and display it on GoogleMaps</title>
145     $head
146     </head>
147     <body>
148     $html
149 dpavlin 13 </body>
150     </html>
151     };

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