cnping

commit 9ae6ad450a3bd01f5b10238aad39f86642197f5d
parent f435ca92fbca170d60f4823191893ddd4a4986ef
Author: CNLohr <charles@cnlohr.com>
Date:   Sat,  9 Apr 2016 13:54:36 -0400

Merge pull request #5 from hackrid/master

adding a gui scale factor to make small ping response times better visible
Diffstat:
M
README.md
 | 
7
++++++-
M
cnping.c
 | 
58
+++++++++++++++++++++++++++++++++++++++++++++++-----------

2 files changed, 53 insertions(+), 12 deletions(-)
diff --git a/README.md b/README.md
@@ -3,7 +3,12 @@ cnping
 
 Minimal Graphical IPV4 Ping Tool.  (also comes with searchnet, like nmap but smaller and simpler).  It uses rawdraw so it is OS independent.
 
-Usage: cnping [IP address] [seconds between pings (decimal OK)] [additional size to increase]
+Usage: cnping [host] [period] [extra size] [y-axis scaling]
+
+			 [host]           -- domain or IP address of ping target
+			 [period]         -- period in seconds (optional), default 0.02
+			 [extra size]     -- ping packet extra size (above 12), optional, default = 0
+			 [y-axis scaling] -- see more swing for small values (optional), default = 1
 
 Picture:
 
diff --git a/cnping.c b/cnping.c
@@ -24,6 +24,7 @@ unsigned long iframeno = 0;
 short screenx, screeny;
 const char * pinghost;
 float pingperiod;
+float GuiYScaleFactor;
 
 uint8_t pattern[8];
 
@@ -35,7 +36,7 @@ double PingSendTimes[PINGCYCLEWIDTH];
 double PingRecvTimes[PINGCYCLEWIDTH];
 int current_cycle = 0;
 
-int ExtraPingSize = 0;
+int ExtraPingSize;
 
 void display(uint8_t *buf, int bytes)
 {
@@ -132,7 +133,7 @@ void DrawFrame( void )
 
 		if( last < 0 && rt > st )
 			last = dt;
-		int h = dt;
+		int h = dt*GuiYScaleFactor;
 		int top = screeny - h;
 		if( top < 0 ) top = 0;
 		CNFGTackSegment( i, screeny-1, i, top );
@@ -159,12 +160,17 @@ void DrawFrame( void )
 
 	stddev = sqrt(stddev);
 
+	int avg_gui    = avg*GuiYScaleFactor;
+	int stddev_gui = stddev*GuiYScaleFactor;
+
 	CNFGColor( 0xff00 );
-	int l = avg;
+
+
+	int l = avg_gui;
 	CNFGTackSegment( 0, screeny-l, screenx, screeny - l );
-	l = avg + stddev;
+	l = (avg_gui) + (stddev_gui);
 	CNFGTackSegment( 0, screeny-l, screenx, screeny - l );
-	l = avg - stddev;
+	l = (avg_gui) - (stddev_gui);
 	CNFGTackSegment( 0, screeny-l, screenx, screeny - l );
 
 	char stbuf[1024];
@@ -216,26 +222,56 @@ int main( int argc, const char ** argv )
 		PingRecvTimes[i] = 0;
 	}
 
+
 	if( argc < 2 )
 	{
-		ERRM( "Usage: cnping [host] [ping period in seconds (optional) default 0.02] [ping packet extra size (above 12), default = 0]\n" );
+		ERRM( "Usage: cnping [host] [period] [extra size] [y-axis scaling]\n"
+
+			  "   [host]           -- domain or IP address of ping target \n"
+			  "   [period]         -- period in seconds (optional), default 0.02 \n"
+			  "   [extra size]     -- ping packet extra size (above 12), optional, default = 0 \n"
+			  "   [y-axis scaling] -- see more swing for small values (optional), default = 1\n");
 		return -1;
 	}
 
+
+	if( argc > 2 )
+	{
+		pingperiod = atof( argv[2] );
+		printf( "Extra ping period: %f\n", pingperiod );
+	}
+	else
+	{
+		pingperiod = 0.02;
+	}
+
 	if( argc > 3 )
 	{
 		ExtraPingSize = atoi( argv[3] );
-		printf( "Extra ping size added: %d\n", ExtraPingSize );
+		printf( "Extra ping size:   %d\n", ExtraPingSize );
+	}
+	else
+	{
+		ExtraPingSize = 0;
 	}
 
-	sprintf( title, "%s - cnping", argv[1] );
+	if( argc > 4 )
+	{
+		GuiYScaleFactor = atof( argv[4] );
+		printf( "GuiYScaleFactor:   %f\n", GuiYScaleFactor );
+	}
+	else
+	{
+		GuiYScaleFactor = 1;
+	}
+
+	pinghost = argv[1];
+
+	sprintf( title, "%s - cnping", pinghost );
 	CNFGSetup( title, 320, 155 );
 
 	ping_setup();
 
-	pinghost = argv[1];
-	pingperiod = (argc>=3)?atof( argv[2] ):.02;
-
 	OGCreateThread( PingSend, 0 );
 	OGCreateThread( PingListen, 0 );