Programming Guide (JScript)

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Script_language_On_the_page'>Examples of scripts in JScript language
On the page:
Example 1. Visualisation of operating the 
Queue length detection in the Video 
Surveillance monitor
Example 2. Visualisation of operating the 
People Counter detection in the Video 
Surveillance monitor
Example 3. Setting the text for displaying 
on the map
Example 4. Displaying camera on the 
monitor by clicking the button on the 
remote control
Example 5. Sending command to camera 
using the camera HTTPAPI
Example 6. Script for framing abandoned 
objects in live video
Example 7. Using START and STOP events 
for Failove
 
To illustrate available fields of application of scripts in Jscript see the following examples which can be used to create additional functions in the system on the basis of the 
 
Script
object.
Example 1. Visualisation of operating the Queue length detection in the Video Surveillance monitor
The 
 object (is part of the Detector Pack package), 
 and 
 objects (instead of N, M, L symbols set the corresponding numbers of the Queue 
Queue length detection
Camera
Captioner
length detection, Camera and Captioner objects) are to be created and configured for correct script working in the 
 software.
Intellect
//Event reading by the queue length
if (Event.SourceType == "OCCUPANCY_COUNTER" && Event.SourceId == "N" && Event.Action == "OCCUPANCY")  //N - 
Number of Queue length detection
{
  var n=Event.GetParam("occupancy");
//Displaying the queue number by the Captioner in the Monitor
  DoReactStr("CAM","M","CLEAR_SUBTITLES","title_id"); //M - Number of Camera  L - Number of Captioner
  DoReactStr("CAM","M","ADD_SUBTITLES","command,page,title_id"); 
//M, L - the same
}

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As a result the text message about the current queue length will be imposed on the video image while displaying the corresponding camera in the Video Surveillance monitor.
Settings of the font, color and position of text is configured on the settings panel of the 
object.
Captioner 
Example 2. Visualisation of operating the People Counter detection in the Video Surveillance monitor
The 
 object (is part of the Detector Pack package), 
, 
 and 
 objects (instead of N, M, L, P symbols set the corresponding numbers 
Macro'>People Counter Detection
Camera Captioner
Macro
of the People counter detection, Camera, Captioner and Macro objects) are to be created and configured for correct script working in the 
 software.
Intellect
//Event reading and counting of entered people 
if (Event.SourceType == "PEOPLE_COUNTER" && Event.SourceId == "N" && Event.Action == "IN") //N - Number of 
People Counter detection  
  {
    i = Itv_var("counter_i");
    k = Itv_var("counter_k");  
    i++;  
    Itv_var("counter_i")=i;
//Displaying the number of people by Captioner in the Monitor
     
    DoReactStr("CAM","M","CLEAR_SUBTITLES","title_id"); //M - Number of Camera  L - Number of Captioner
    DoReactStr("CAM","M","ADD_SUBTITLES","command,
page,title_id"); //M, L - the same
      
  }
//Event reading and counting of exitng people
if (Event.SourceType == "PEOPLE_COUNTER" && Event.SourceId == "N" && Event.Action == "OUT") //N - Number of 
People Counter detection
  {
    i = Itv_var("counter_i");
    k = Itv_var("counter_k"); 
    k++;  
    Itv_var("counter_k")=k;
//Displaying the number of people by Captioner in the Monitor  
   
   DoReactStr("CAM","M","CLEAR_SUBTITLES","title_id"); //M - Number of Camera  L - Number of Captioner
   DoReactStr("CAM","M","ADD_SUBTITLES","command,
page,title_id"); //M, L - the same

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  }
//Null the counter by Macro (previously the Macro is to be created in the Intellect)
if (Event.SourceType == "MACRO" && Event.SourceId == "P" && Event.Action == "RUN") //P - Number of Macro
  {
    Itv_var("counter_i")=0;
    Itv_var("counter_k")=0;
    i=0;
    k=0;
//Displaying number of people by Captioner in the Monitor
      
    DoReactStr("CAM","M","CLEAR_SUBTITLES","title_id"); //M - Number of Camera  L - Number of Captioner
    DoReactStr("CAM","M","ADD_SUBTITLES","command,
page,title_id"); //M, L - the same
  }
As a result the text message about number of entering and exiting people will be imposed on the video image while displaying the corresponding camera in the Video Surveillance 
monitor.
Settings of the font, color and position of text is configured on the settings panel of the 
object (see the 
 section of the 
Captioner 
Configuring captions display on a video image
Administ
 document).
rator’s Guide
Previously create the 
 object on the 
 tab to null the counter of visitors. The name of the object can be changed to “Null of people counter” for ease of using.
Macro
Programming
Macro of setting to zero can be run manually by main menu of the 
 software package or automatically in any specified time (use the 
 table on the settings panel of the 
Intellect
Events
M
 object where the previously configured 
 object is to be specified). Detailed information about using the 
 and 
 objects is given in the 
acro
Time zone
Macro
Time zone
Administrator's 
 document).
Guide
Example 3. Setting the text for displaying on the map
It is possible to select the type of 
 displaying while attaching object to the map (see 
, the 
 section). Also the 
Text
Administrator Guide
Attaching objects to the layers of interactive map
script on the JScript language can be used for changing the displayed text.
Example. The Text type of display on the map is selected for the Camera 1. It's required to display value of the MyVar value read from the C:\test.ini file on the map and debug 
window while processing the Macro 1.
if(Event.SourceType == "MACRO" && Event.Action == "RUN") 
{ 
 var result = parseInt(ReadIni("MyVar","C:\\test.ini"));
 result += 2;
 NotifyEventStr("CAM","1","ANALOG_PARAMS","text, blink_state<1>");

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