src=""
width=""
height=""
name=""
autostart="1"
autoplay="1"
showcontrols="0"
controller="0">
';
}
$string .= $label;
if ( $condition )
{
$string .= '';
}
return( $string );
}
function truncText( $text, $length, $deslash=1 )
{
return( preg_replace( "/^(.{".$length.",}?)\b.*$/", "\\1…", ($deslash?stripslashes($text):$text) ) );
}
function buildSelect( $name, $contents, $behaviours=false )
{
if ( preg_match( "/^(\w+)\s*\[\s*['\"]?(\w+)[\"']?\s*]$/", $name, $matches ) )
{
$arr = $matches[1];
$idx = $matches[2];
global $$arr;
$value = ${$arr}[$idx];
}
else
{
global $$name;
$value = $$name;
}
ob_start();
$behaviour_text = "";
if ( !empty($behaviours) )
{
if ( is_array($behaviours) )
{
foreach ( $behaviours as $event=>$action )
{
$behaviour_text .= ' '.$event.'="'.$action.'"';
}
}
else
{
$behaviour_text = ' onChange="'.$behaviours.'"';
}
}
?>
$value )
{
if ( $columns && !$columns[$key] )
continue;
switch( $types[$key] )
{
case 'set' :
{
if ( is_array( $new_values[$key] ) )
{
if ( join(',',$new_values[$key]) != $values[$key] )
{
$changes[$key] = "$key = '".join(',',$new_values[$key])."'";
}
}
elseif ( $values[$key] )
{
$changes[$key] = "$key = ''";
}
break;
}
case 'image' :
{
if ( is_array( $new_values[$key] ) )
{
$image_data = getimagesize( $new_values[$key]['tmp_name'] );
$changes[$key.'Width'] = $key."Width = ".$image_data[0];
$changes[$key.'Height'] = $key."Height = ".$image_data[1];
$changes[$key.'Type'] = $key."Type = '".$new_values[$key]['type']."'";
$changes[$key.'Size'] = $key."Size = ".$new_values[$key]['size'];
ob_start();
readfile( $new_values[$key]['tmp_name'] );
$changes[$key] = $key." = '".addslashes( ob_get_contents() )."'";
ob_end_clean();
}
else
{
$changes[$key] = "$key = '$value'";
}
break;
}
case 'document' :
{
if ( is_array( $new_values[$key] ) )
{
$image_data = getimagesize( $new_values[$key]['tmp_name'] );
$changes[$key.'Type'] = $key."Type = '".$new_values[$key]['type']."'";
$changes[$key.'Size'] = $key."Size = ".$new_values[$key]['size'];
ob_start();
readfile( $new_values[$key]['tmp_name'] );
$changes[$key] = $key." = '".addslashes( ob_get_contents() )."'";
ob_end_clean();
}
else
{
$changes[$key] = "$key = '$value'";
}
break;
}
case 'file' :
{
$changes[$key.'Type'] = $key."Type = '".$new_values[$key]['type']."'";
$changes[$key.'Size'] = $key."Size = ".$new_values[$key]['size'];
ob_start();
readfile( $new_values[$key]['tmp_name'] );
$changes[$key] = $key." = '".addslashes( ob_get_contents() )."'";
ob_end_clean();
break;
}
case 'raw' :
{
if ( $values[$key] != $value )
{
$changes[$key] = "$key = $value";
}
break;
}
default :
{
if ( $values[$key] != $value )
{
$changes[$key] = "$key = '$value'";
}
break;
}
}
}
foreach( $values as $key=>$value )
{
if ( $columns[$key] && $types[$key] == 'toggle' )
{
if ( !isset($new_values[$key]) && !empty($value) )
{
$changes[$key] = "$key = 0";
}
}
}
return( $changes );
}
function getBrowser( &$browser, &$version )
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SERVER;
}
if (ereg( 'MSIE ([0-9].[0-9]{1,2})',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'ie';
}
elseif (ereg( 'Safari/([0-9.]+)',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'safari';
}
elseif (ereg( 'Opera ([0-9].[0-9]{1,2})',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'opera';
}
elseif (ereg( 'Mozilla/([0-9].[0-9]{1,2})',$_SERVER['HTTP_USER_AGENT'],$log_version))
{
$version = $log_version[1];
$browser = 'mozilla';
}
else
{
$version = 0;
$browser = 'unknown';
}
}
function isNetscape()
{
getBrowser( $browser, $version );
return( $browser == "mozilla" );
}
function isInternetExplorer()
{
getBrowser( $browser, $version );
return( $browser == "ie" );
}
function isWindows()
{
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SERVER;
}
return ( preg_match( '/Win/', $_SERVER['HTTP_USER_AGENT'] ) );
}
function canStreamNative()
{
return( ZM_CAN_STREAM == "yes" || ( ZM_CAN_STREAM == "auto" && isNetscape() ) );
}
function canStreamApplet()
{
return( (ZM_OPT_CAMBOZOLA && file_exists( ZM_PATH_WEB.'/'.ZM_PATH_CAMBOZOLA )) );
}
function canStream()
{
return( canStreamNative() | canStreamApplet() );
}
function fixDevices()
{
$string = ZM_PATH_BIN."/zmfix";
$string .= " 2>/dev/null >&- <&- >/dev/null";
exec( $string );
}
function packageControl( $command )
{
$string = ZM_PATH_BIN."/zmpkg.pl $command";
$string .= " 2>/dev/null >&- <&- >/dev/null";
exec( $string );
}
function daemonControl( $command, $daemon=false, $args=false )
{
$string = ZM_PATH_BIN."/zmdc.pl $command";
if ( $daemon )
{
$string .= " $daemon";
if ( $args )
{
$string .= " $args";
}
}
$string .= " 2>/dev/null >&- <&- >/dev/null";
exec( $string );
}
function zmcControl( $monitor, $mode=false )
{
if ( $monitor['Type'] == "Local" )
{
$sql = "select count(if(Function!='None',1,NULL)) as ActiveCount from Monitors where Device = '".$monitor['Device']."'";
$zmc_args = "-d ".$monitor['Device'];
}
else
{
$sql = "select count(if(Function!='None',1,NULL)) as ActiveCount from Monitors where Id = '".$monitor['Id']."'";
$zmc_args = "-m ".$monitor['Id'];
}
$result = mysql_query( $sql );
if ( !$result )
echo mysql_error();
$row = mysql_fetch_assoc( $result );
$active_count = $row['ActiveCount'];
if ( !$active_count )
{
daemonControl( "stop", "zmc", $zmc_args );
}
else
{
if ( $mode == "restart" )
{
daemonControl( "stop", "zmc", $zmc_args );
}
daemonControl( "start", "zmc", $zmc_args );
}
}
function zmaControl( $monitor, $mode=false )
{
if ( !is_array( $monitor ) )
{
$sql = "select Id,Function,Enabled from Monitors where Id = '$monitor'";
$result = mysql_query( $sql );
if ( !$result )
echo mysql_error();
$monitor = mysql_fetch_assoc( $result );
}
switch ( $monitor['Function'] )
{
case 'Modect' :
case 'Record' :
case 'Mocord' :
case 'Nodect' :
{
if ( $mode == restart )
{
if ( ZM_OPT_CONTROL )
{
daemonControl( "stop", "zmtrack.pl", "-m ".$monitor['Id'] );
}
daemonControl( "stop", "zma", "-m ".$monitor['Id'] );
if ( ZM_OPT_FRAME_SERVER )
{
daemonControl( "stop", "zmf", "-m ".$monitor['Id'] );
}
}
if ( ZM_OPT_FRAME_SERVER )
{
daemonControl( "start", "zmf", "-m ".$monitor['Id'] );
}
daemonControl( "start", "zma", "-m ".$monitor['Id'] );
if ( ZM_OPT_CONTROL && $monitor['Controllable'] && $monitor['TrackMotion'] && ( $monitor['Function'] == 'Modect' || $monitor['Function'] == 'Mocord' ) )
{
daemonControl( "start", "zmtrack.pl", "-m ".$monitor['Id'] );
}
if ( $mode == "reload" )
{
daemonControl( "reload", "zma", "-m ".$monitor['Id'] );
}
break;
}
default :
{
if ( ZM_OPT_CONTROL )
{
daemonControl( "stop", "zmtrack.pl", "-m ".$monitor['Id'] );
}
daemonControl( "stop", "zma", "-m ".$monitor['Id'] );
if ( ZM_OPT_FRAME_SERVER )
{
daemonControl( "stop", "zmf", "-m ".$monitor['Id'] );
}
break;
}
}
}
function initDaemonStatus()
{
global $daemon_status;
if ( !$daemon_status )
{
$string = ZM_PATH_BIN."/zmdc.pl status";
$daemon_status = shell_exec( $string );
}
}
function daemonStatus( $daemon, $args=false )
{
global $daemon_status;
if ( daemonCheck() )
{
initDaemonStatus();
}
else
{
$daemon_status = "";
}
$string = "$daemon";
if ( $args )
$string .= " $args";
return( strpos( $daemon_status, "'$string' running" ) !== false );
}
function zmcStatus( $monitor )
{
if ( $monitor['Type'] == 'Local' )
{
$zmc_args = "-d ".$monitor['Device'];
}
else
{
$zmc_args = "-m ".$monitor['Id'];
}
return( daemonStatus( "zmc", $zmc_args ) );
}
function zmaStatus( $monitor )
{
if ( is_array( $monitor ) )
{
$monitor = $monitor['Id'];
}
return( daemonStatus( "zma", "-m $monitor" ) );
}
function daemonCheck( $daemon=false, $args=false )
{
$string = ZM_PATH_BIN."/zmdc.pl check";
if ( $daemon )
{
$string .= " $daemon";
if ( $args )
$string .= " $args";
}
$result = exec( $string );
return( preg_match( '/running/', $result ) );
}
function zmcCheck( $monitor )
{
if ( $monitor['Type'] == 'Local' )
{
$zmc_args = "-d ".$monitor['Device'];
}
else
{
$zmc_args = "-m ".$monitor['Id'];
}
return( daemonCheck( "zmc", $zmc_args ) );
}
function zmaCheck( $monitor )
{
if ( is_array( $monitor ) )
{
$monitor = $monitor['Id'];
}
return( daemonCheck( "zma", "-m $monitor" ) );
}
function createListThumbnail( $event, $overwrite=false )
{
$sql = "select * from Frames where EventId = '".$event['Id']."' and Score = '".$event['MaxScore']."' order by FrameId limit 0,1";
if ( !($result = mysql_query( $sql )) )
die( mysql_error() );
$frame = mysql_fetch_assoc( $result );
$frame_id = $frame['FrameId'];
if ( ZM_WEB_LIST_THUMB_WIDTH )
{
$thumb_width = ZM_WEB_LIST_THUMB_WIDTH;
$fraction = ZM_WEB_LIST_THUMB_WIDTH/$event['Width'];
$thumb_height = $event['Height']*$fraction;
}
elseif ( ZM_WEB_LIST_THUMB_HEIGHT )
{
$thumb_height = ZM_WEB_LIST_THUMB_HEIGHT;
$fraction = ZM_WEB_LIST_THUMB_HEIGHT/$event['Height'];
$thumb_width = $event['Width']*$fraction;
}
else
{
die( "No thumbnail width or height specified, please check in Options->Web" );
}
$event_path = ZM_DIR_EVENTS.'/'.$event['MonitorId'].'/'.$event['Id'];
$image_path = sprintf( "%s/%0".ZM_EVENT_IMAGE_DIGITS."d-capture.jpg", $event_path, $frame_id );
$capt_image = $image_path;
if ( $scale == 1 || !file_exists( ZM_PATH_NETPBM."/jpegtopnm" ) )
{
$anal_image = preg_replace( "/capture/", "analyse", $image_path );
if ( file_exists($anal_image) && filesize( $anal_image ) )
{
$thumb_image = $anal_image;
}
else
{
$thumb_image = $capt_image;
}
}
else
{
$thumb_image = preg_replace( "/capture/", "mini", $capt_image );
if ( !file_exists($thumb_image) || !filesize( $thumb_image ) )
{
$anal_image = preg_replace( "/capture/", "analyse", $capt_image );
if ( file_exists( $anal_image ) )
$command = ZM_PATH_NETPBM."/jpegtopnm -dct fast $anal_image | ".ZM_PATH_NETPBM."/pnmscalefixed $fraction | ".ZM_PATH_NETPBM."/ppmtojpeg --dct=fast > $thumb_image";
else
$command = ZM_PATH_NETPBM."/jpegtopnm -dct fast $capt_image | ".ZM_PATH_NETPBM."/pnmscalefixed $fraction | ".ZM_PATH_NETPBM."/ppmtojpeg --dct=fast > $thumb_image";
#exec( escapeshellcmd( $command ) );
exec( $command );
}
}
$thumb_data = $frame;
$thumb_data['Path'] = $thumb_image;
$thumb_data['Width'] = (int)$thumb_width;
$thumb_data['Height'] = (int)$thumb_height;
return( $thumb_data );
}
function createVideo( $event, $format, $rate, $scale, $overwrite=false )
{
$command = ZM_PATH_BIN."/zmvideo.pl -e ".$event['Id']." -f ".$format." -r ".sprintf( "%.2f", ($rate/RATE_SCALE) )." -s ".sprintf( "%.2f", ($scale/SCALE_SCALE) );
if ( $overwrite )
$command .= " -o";
$result = exec( $command, $output, $status );
return( $status?"":rtrim($result) );
}
// Now deprecated
function createImage( $monitor, $scale )
{
if ( is_array( $monitor ) )
{
$monitor = $monitor['Id'];
}
chdir( ZM_DIR_IMAGES );
$command = getZmuCommand( " -m $monitor -i" );
if ( !empty($scale) && $scale < 100 )
$command .= " -S $scale";
$status = exec( escapeshellcmd( $command ) );
chdir( '..' );
return( $status );
}
function reScale( $dimension, $dummy )
{
for ( $i = 1; $i < func_num_args(); $i++ )
{
$scale = func_get_arg( $i );
if ( !empty($scale) && $scale != SCALE_SCALE )
$dimension = (int)(($dimension*$scale)/SCALE_SCALE);
}
return( $dimension );
}
function deScale( $dimension, $dummy )
{
for ( $i = 1; $i < func_num_args(); $i++ )
{
$scale = func_get_arg( $i );
if ( !empty($scale) && $scale != SCALE_SCALE )
$dimension = (int)(($dimension*SCALE_SCALE)/$scale);
}
return( $dimension );
}
function parseSort( $save_to_session=false, $term_sep='&' )
{
global $sort_field, $sort_asc; // Inputs
global $sort_query, $sort_column, $sort_order; // Outputs
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
if ( !isset($sort_field) )
{
$sort_field = ZM_EVENT_SORT_FIELD;
$sort_asc = (ZM_EVENT_SORT_ORDER == "asc");
}
switch( $sort_field )
{
case 'Id' :
$sort_column = "E.Id";
break;
case 'MonitorName' :
$sort_column = "M.Name";
break;
case 'Name' :
$sort_column = "E.Name";
break;
case 'Cause' :
$sort_column = "E.Cause";
break;
case 'DateTime' :
case 'StartTime' :
$sort_column = "E.StartTime";
break;
case 'Length' :
$sort_column = "E.Length";
break;
case 'Frames' :
$sort_column = "E.Frames";
break;
case 'AlarmFrames' :
$sort_column = "E.AlarmFrames";
break;
case 'TotScore' :
$sort_column = "E.TotScore";
break;
case 'AvgScore' :
$sort_column = "E.AvgScore";
break;
case 'MaxScore' :
$sort_column = "E.MaxScore";
break;
default:
$sort_column = "E.StartTime";
break;
}
$sort_order = $sort_asc?"asc":"desc";
if ( !$sort_asc ) $sort_asc = 0;
$sort_query = $term_sep."sort_field=".$sort_field.$term_sep."sort_asc=".$sort_asc;
if ( $save_to_session )
{
$_SESSION['sort_field'] = $sort_field;
$_SESSION['sort_asc'] = $sort_asc;
}
}
function parseFilter( $save_to_session=false, $term_sep='&' )
{
global $trms; // Inputs
global $filter_query, $filter_sql, $filter_fields; // Outputs
if ( version_compare( phpversion(), "4.1.0", "<") )
{
global $_SESSION;
}
$filter_query = '';
$filter_sql = '';
$filter_fields = '';
if ( $trms )
{
if ( $save_to_session )
{
$_SESSION['trms'] = $trms;
}
$filter_query .= $term_sep."trms=".$trms;
$filter_fields .= ''."\n";
for ( $i = 1; $i <= $trms; $i++ )
{
$conjunction_name = "cnj$i";
$obracket_name = "obr$i";
$cbracket_name = "cbr$i";
$attr_name = "attr$i";
$op_name = "op$i";
$value_name = "val$i";
global $$conjunction_name, $$obracket_name, $$cbracket_name, $$attr_name, $$op_name, $$value_name;
if ( isset($$conjunction_name) )
{
$filter_query .= $term_sep.$conjunction_name."=".$$conjunction_name;
$filter_sql .= " ".$$conjunction_name." ";
$filter_fields .= ''."\n";
if ( $save_to_session )
{
$_SESSION[$conjunction_name] = $$conjunction_name;
}
}
if ( isset($$obracket_name) )
{
$filter_query .= $term_sep.$obracket_name."=".$$obracket_name;
$filter_sql .= str_repeat( "(", $$obracket_name );
$filter_fields .= ''."\n";
if ( $save_to_session )
{
$_SESSION[$obracket_name] = $$obracket_name;
}
}
if ( isset($$attr_name) )
{
$filter_query .= $term_sep.$attr_name."=".$$attr_name;
$filter_fields .= ''."\n";
switch ( $$attr_name )
{
case 'MonitorName':
$filter_sql .= 'M.'.preg_replace( '/^Monitor/', '', $$attr_name );
break;
case 'DateTime':
$filter_sql .= "E.StartTime";
break;
case 'Date':
$filter_sql .= "to_days( E.StartTime )";
break;
case 'Time':
$filter_sql .= "extract( hour_second from E.StartTime )";
break;
case 'Weekday':
$filter_sql .= "weekday( E.StartTime )";
break;
case 'Id':
case 'Name':
case 'MonitorId':
case 'Length':
case 'Frames':
case 'AlarmFrames':
case 'TotScore':
case 'AvgScore':
case 'MaxScore':
case 'Cause':
case 'Notes':
case 'Archived':
$filter_sql .= "E.".$$attr_name;
break;
case 'DiskPercent':
$filter_sql .= getDiskPercent();
break;
case 'DiskBlocks':
$filter_sql .= getDiskBlocks();
break;
}
$value_list = array();
foreach ( preg_split( '/["\'\s]*?,["\'\s]*?/', preg_replace( '/^["\']+?(.+)["\']+?$/', '$1', $$value_name ) ) as $value )
{
switch ( $$attr_name )
{
case 'MonitorName':
case 'Name':
case 'Cause':
case 'Notes':
$value = "'$value'";
break;
case 'DateTime':
$value = "'".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."'";
break;
case 'Date':
$value = "to_days( '".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."' )";
break;
case 'Time':
$value = "extract( hour_second from '".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."' )";
break;
case 'Weekday':
$value = "weekday( '".strftime( "%Y-%m-%d %H:%M:%S", strtotime( $value ) )."' )";
break;
}
$value_list[] = $value;
}
switch ( $$op_name )
{
case '=' :
case '!=' :
case '>=' :
case '>' :
case '<' :
case '<=' :
$filter_sql .= " ".$$op_name." $value";
break;
case '=~' :
$filter_sql .= " regexp $value";
break;
case '!~' :
$filter_sql .= " not regexp $value";
break;
case '=[]' :
$filter_sql .= " in (".join( ",", $value_list ).")";
break;
case '![]' :
$filter_sql .= " not in (".join( ",", $value_list ).")";
break;
}
$filter_query .= $term_sep.$op_name."=".urlencode($$op_name);
$filter_fields .= ''."\n";
$filter_query .= $term_sep.$value_name."=".urlencode($$value_name);
$filter_fields .= ''."\n";
if ( $save_to_session )
{
$_SESSION[$attr_name] = $$attr_name;
$_SESSION[$op_name] = $$op_name;
$_SESSION[$value_name] = $$value_name;
}
}
if ( isset($$cbracket_name) )
{
$filter_query .= $term_sep.$cbracket_name."=".$$cbracket_name;
$filter_sql .= str_repeat( ")", $$cbracket_name );
$filter_fields .= ''."\n";
if ( $save_to_session )
{
$_SESSION[$cbracket_name] = $$cbracket_name;
}
}
}
$filter_sql = " and ( $filter_sql )";
}
}
function getLoad()
{
$uptime = shell_exec( 'uptime' );
$load = '';
if ( preg_match( '/load average: ([\d.]+)/', $uptime, $matches ) )
$load = $matches[1];
return( $load );
}
function getDiskPercent()
{
$df = shell_exec( 'df '.ZM_DIR_EVENTS );
$space = -1;
if ( preg_match( '/\s(\d+)%/ms', $df, $matches ) )
$space = $matches[1];
return( $space );
}
function getDiskBlocks()
{
$df = shell_exec( 'df '.ZM_DIR_EVENTS );
$space = -1;
if ( preg_match( '/\s(\d+)\s+\d+\s+\d+%/ms', $df, $matches ) )
$space = $matches[1];
return( $space );
}
// Function to fix a problem whereby the built in PHP session handling
// features want to put the sid as a hidden field after the form or
// fieldset tag, neither of which will work with strict XHTML Basic.
function sidField()
{
if ( SID )
{
list( $sessname, $sessid ) = split( "=", SID );
?>
";
return( false );
}
$dx1 = $line1[1]['x'] - $line1[0]['x'];
$dy1 = $line1[1]['y'] - $line1[0]['y'];
$dx2 = $line2[1]['x'] - $line2[0]['x'];
$dy2 = $line2[1]['y'] - $line2[0]['y'];
if ( $dx1 )
{
$m1 = $dy1/$dx1;
$b1 = $line1[0]['y'] - ($m1 * $line1[0]['x']);
}
else
{
$b1 = $line1[0]['y'];
}
if ( $dx2 )
{
$m2 = $dy2/$dx2;
$b2 = $line2[0]['y'] - ($m2 * $line2[0]['x']);
}
else
{
$b2 = $line2[0]['y'];
}
if ( $dx1 && $dx2 ) // Both not vertical
{
if ( $m1 != $m2 ) // Not parallel or colinear
{
$x = ( $b2 - $b1 ) / ( $m1 - $m2 );
if ( $x >= $min_x1 && $x <= $max_x1 && $x >= $min_x2 && $x <= $max_x2 )
{
if ( $debug ) echo "Intersecting, at x $x
";
return( true );
}
else
{
if ( $debug ) echo "Not intersecting, out of range at x $x
";
return( false );
}
}
elseif ( $b1 == $b2 )
{
// Colinear, must overlap due to box check, intersect?
if ( $debug ) echo "Intersecting, colinear
";
return( true );
}
else
{
// Parallel
if ( $debug ) echo "Not intersecting, parallel
";
return( false );
}
}
elseif ( !$dx1 ) // Line 1 is vertical
{
$y = ( $m2 * $line1[0]['x'] ) * $b2;
if ( $y >= $min_y1 && $y <= $max_y1 )
{
if ( $debug ) echo "Intersecting, at y $y
";
return( true );
}
else
{
if ( $debug ) echo "Not intersecting, out of range at y $y
";
return( false );
}
}
elseif ( !$dx2 ) // Line 2 is vertical
{
$y = ( $m1 * $line2[0]['x'] ) * $b1;
if ( $y >= $min_y2 && $y <= $max_y2 )
{
if ( $debug ) echo "Intersecting, at y $y
";
return( true );
}
else
{
if ( $debug ) echo "Not intersecting, out of range at y $y
";
return( false );
}
}
else // Both lines are vertical
{
if ( $line1[0]['x'] == $line2[0]['x'] )
{
// Colinear, must overlap due to box check, intersect?
if ( $debug ) echo "Intersecting, vertical, colinear
";
return( true );
}
else
{
// Parallel
if ( $debug ) echo "Not intersecting, vertical, parallel
";
return( false );
}
}
if ( $debug ) echo "Whoops, unexpected scenario
";
return( false );
}
function isSelfIntersecting( $points )
{
global $debug;
$n_coords = count($points);
$edges = array();
for ( $j = 0, $i = $n_coords-1; $j < $n_coords; $i = $j++ )
{
$edges[] = array( $points[$i], $points[$j] );
}
for ( $i = 0; $i <= ($n_coords-2); $i++ )
{
for ( $j = $i+2; $j < $n_coords+min(0,$i-1); $j++ )
{
if ( $debug ) echo "Checking $i and $j
";
if ( linesIntersect( $edges[$i], $edges[$j] ) )
{
if ( $debug ) echo "Lines $i and $j intersect
";
return( true );
}
}
}
return( false );
}
function getPolyCentre( $points, $area=0 )
{
$cx = 0.0;
$cy = 0.0;
if ( !$area )
$area = getPolyArea( $points );
for ( $i = 0, $j = count($points)-1; $i < count($points); $j = $i++ )
{
$ct = ($points[$i]['x'] * $points[$j]['y']) - ($points[$j]['x'] * $points[$i]['y']);
$cx += ($points[$i]['x'] + $points[$j]['x']) * ct;
$cy += ($points[$i]['y'] + $points[$j]['y']) * ct;
}
$cx = intval(round(abs($cx/(6.0*$area))));
$cy = intval(round(abs($cy/(6.0*$area))));
printf( "X:%cx, Y:$cy
" );
return( array( 'x'=>$cx, 'y'=>$cy ) );
}
function _CompareXY( $a, $b )
{
if ( $a['min_y'] == $b['min_y'] )
return( intval($a['min_x'] - $b['min_x']) );
else
return( intval($a['min_y'] - $b['min_y']) );
}
function _CompareX( $a, $b )
{
return( intval($a['min_x'] - $b['min_x']) );
}
function getPolyArea( $points )
{
//error_reporting( E_ALL );
global $debug;
$n_coords = count($points);
$global_edges = array();
for ( $j = 0, $i = $n_coords-1; $j < $n_coords; $i = $j++ )
{
$x1 = $points[$i]['x'];
$x2 = $points[$j]['x'];
$y1 = $points[$i]['y'];
$y2 = $points[$j]['y'];
//printf( "x1:%d,y1:%d x2:%d,y2:%d\n", x1, y1, x2, y2 );
if ( $y1 == $y2 )
continue;
$dx = $x2 - $x1;
$dy = $y2 - $y1;
$global_edges[] = array(
"min_y" => $y1<$y2?$y1:$y2,
"max_y" => ($y1<$y2?$y2:$y1)+1,
"min_x" => $y1<$y2?$x1:$x2,
"_1_m" => $dx/$dy,
);
}
usort( $global_edges, "_CompareXY" );
if ( $debug )
{
for ( $i = 0; $i < count($global_edges); $i++ )
{
printf( "%d: min_y: %d, max_y:%d, min_x:%.2f, 1/m:%.2f
", $i, $global_edges[$i]['min_y'], $global_edges[$i]['max_y'], $global_edges[$i]['min_x'], $global_edges[$i]['_1_m'] );
}
}
$area = 0.0;
$active_edges = array();
$y = $global_edges[0]['min_y'];
do
{
for ( $i = 0; $i < count($global_edges); $i++ )
{
if ( $global_edges[$i]['min_y'] == $y )
{
if ( $debug ) printf( "Moving global edge
" );
$active_edges[] = $global_edges[$i];
array_splice( $global_edges, $i, 1 );
$i--;
}
else
{
break;
}
}
usort( $active_edges, "_CompareX" );
if ( $debug )
{
for ( $i = 0; $i < count($active_edges); $i++ )
{
printf( "%d - %d: min_y: %d, max_y:%d, min_x:%.2f, 1/m:%.2f
", $y, $i, $active_edges[$i]['min_y'], $active_edges[$i]['max_y'], $active_edges[$i]['min_x'], $active_edges[$i]['_1_m'] );
}
}
$last_x = 0;
$row_area = 0;
$parity = false;
for ( $i = 0; $i < count($active_edges); $i++ )
{
$x = intval(round($active_edges[$i]['min_x']));
if ( $parity )
{
$row_area += ($x - $last_x)+1;
$area += $row_area;
}
if ( $active_edges[$i]['max_y'] != $y )
$parity = !$parity;
$last_x = $x;
}
if ( $debug ) printf( "%d: Area:%d
", $y, $row_area );
$y++;
for ( $i = 0; $i < count($active_edges); $i++ )
{
if ( $y >= $active_edges[$i]['max_y'] ) // Or >= as per sheets
{
if ( $debug ) printf( "Deleting active_edge
" );
array_splice( $active_edges, $i, 1 );
$i--;
}
else
{
$active_edges[$i]['min_x'] += $active_edges[$i]['_1_m'];
}
}
} while ( count($global_edges) || count($active_edges) );
if ( $debug ) printf( "Area:%d
", $area );
return( $area );
}
function getPolyAreaOld( $points )
{
$area = 0.0;
$edge = 0.0;
for ( $i = 0, $j = count($points)-1; $i < count($points); $j = $i++ )
{
$x_diff = ($points[$i]['x'] - $points[$j]['x']);
$y_diff = ($points[$i]['y'] - $points[$j]['y']);
$y_sum = ($points[$i]['y'] + $points[$j]['y']);
$trap_edge = sqrt(pow(abs($x_diff)+1,2) + pow(abs($y_diff)+1,2) );
$edge += $trap_edge;
$trap_area = ($x_diff * $y_sum );
$area += $trap_area;
printf( "%d->%d, %d-%d=%.2f, %d+%d=%.2f(%.2f), %.2f, %.2f
", i, j, $points[$i]['x'], $points[$j]['x'], $x_diff, $points[$i]['y'], $points[$j]['y'], $y_sum, $y_diff, $trap_area, $trap_edge );
}
$edge = intval(round(abs($edge)));
$area = intval(round((abs($area)+$edge)/2));
echo "E:$edge
";
echo "A:$area
";
return( $area );
}
function mapCoords( $a )
{
return( $a['x'].",".$a['y'] );
}
function pointsToCoords( $points )
{
return( join( " ", array_map( "mapCoords", $points ) ) );
}
function coordsToPoints( $coords )
{
$points = array();
if ( preg_match_all( '/(\d+,\d+)+/', $coords, $matches ) )
{
for ( $i = 0; $i < count($matches[1]); $i++ )
{
if ( preg_match( '/(\d+),(\d+)/', $matches[1][$i], $cmatches ) )
{
$points[] = array( 'x'=>$cmatches[1], 'y'=>$cmatches[2] );
}
else
{
echo( "Bogus coordinates '".$matches[$i]."'" );
return( false );
}
}
}
else
{
echo( "Bogus coordinate string '$coords'" );
return( false );
}
return( $points );
}
function getLanguages()
{
$langs = array();
foreach ( glob("zm_lang_*_*.php") as $file )
{
preg_match( '/zm_lang_(.+_.+)\.php/', $file, $matches );
$langs[$matches[1]] = $matches[1];
}
return( $langs );
}
?>