1: <?php // test.graph.php
  2: ob_start();
  3: require("include.php");
  4: $NATS->Start();
  5: /*
  6: if (!$NATS_Session->Check($NATS->DB))
  7: 	{
  8: 	header("Location: ./?login_msg=Invalid+Or+Expired+Session");
  9: 	exit();
 10: 	}
 11: if ($NATS_Session->userlevel<1) UL_Error("View Test History");
 12: */
 13: 
 14: function ty($y)
 15: {
 16: global $height;
 17: return $height-$y;
 18: }
 19: 
 20: 
 21: // width height suid startx finishx
 22: 
 23: if (isset($_REQUEST['width'])) $width=$_REQUEST['width'];
 24: else $width=600;
 25: if (isset($_REQUEST['height'])) $width=$_REQUEST['height'];
 26: else $height=200;
 27: // start image
 28: $im=@imagecreate($width,$height)
 29: 	or die("Cannot create image");
 30: 
 31: // setup colours
 32: $c_white=imagecolorallocate($im,255,255,255);
 33: $c_black=imagecolorallocate($im,0,0,0);
 34: $c_red=imagecolorallocate($im,250,50,50);
 35: $c_axes=imagecolorallocate($im,200,200,200);
 36: $c_blue=imagecolorallocate($im,50,50,255);
 37: $c_green=imagecolorallocate($im,0,200,0);
 38: $c_orange=imagecolorallocate($im,200,200,0);
 39: 
 40: $c_bg=$c_white;
 41: $c_txt=$c_black;
 42: 
 43: // fill background
 44: imagefill($im,1,1,$c_bg);
 45: 	
 46: function ierror($t)
 47: {
 48: global $im,$width,$height,$c_red;
 49: header("Content-type: image/png");
 50: imagestring($im,2,($width/2)-20,$height/2,"ERROR: ".$t,$c_red);
 51: imagepng($im);
 52: imagedestroy($im);
 53: exit();
 54: }
 55: 
 56: 
 57: if (!isset($_REQUEST['nodeid'])) ierror("No node ID");
 58: else $nodeid=$_REQUEST['nodeid'];
 59: 
 60: $day=date("d");
 61: $month=date("m");
 62: $year=date("Y");
 63: 
 64: if (isset($_REQUEST['startx'])) $startx=$_REQUEST['startx'];
 65: else
 66: 	{ // 0:00 today    HMS mo da yr
 67: 	$startx=mktime(0,0,0,$month,$day,$year);
 68: 	//$startx=1203451396;
 69: 	}
 70: 	
 71: if (isset($_REQUEST['finishx'])) $finishx=$_REQUEST['finishx'];
 72: else $finishx=mktime(23,59,59,$month,$day,$year);
 73: //$finishx=1203454996;
 74: $periodx=$finishx-$startx;
 75: $startt=date("H:i:s d/m/y",$startx);
 76: $finisht=date("H:i:s d/m/y",$finishx);
 77: 
 78: 
 79: // titles and stuff
 80: imagestring($im,1,2,2,$startt,$c_txt);
 81: imagestring($im,1,$width-90,2,$finisht,$c_txt);
 82: imagestring($im,2,($width/2)-30,0,$nodeid,$c_txt);
 83: 
 84: // v-axes
 85: imageline($im,50,ty(1),50,ty($height-20),$c_axes);
 86: imageline($im,$width-5,ty(1),$width-5,ty($height-20),$c_axes);
 87: // y-axes
 88: imageline($im,50,ty(1),$width-5,ty(1),$c_axes);
 89: imageline($im,$width-5,ty($height-20),50,ty($height-20),$c_axes);
 90: $xoff=50+1;
 91: $xlen=$width-$xoff-5;
 92: 
 93: $yoff=1;
 94: $ylen=$height-20;
 95: 
 96: //ierror("hello");
 97: 
 98: // range data
 99: $q="SELECT testvalue FROM fnrecord WHERE testid=\"".ss($_REQUEST['testid'])."\"";
100: $q.=" AND recordx>=".ss($startx)." AND recordx<=".ss($finishx)." ";
101: $q.="ORDER BY testvalue ASC LIMIT 0,1"; // lowest
102: $r=$NATS->DB->Query($q);
103: //ierror($q);
104: if (!$row=$NATS->DB->Fetch_Array($r)) ierror("No data for test");
105: $lowest=$row['testvalue'];
106: $dlow=$lowest;
107: if ($dlow>0) $dlow=0;
108: $NATS->DB->Free($r);
109: 
110: $q="SELECT testvalue FROM fnrecord WHERE testid=\"".ss($_REQUEST['testid'])."\"";
111: 
112: $q.=" AND recordx>=".ss($startx)." AND recordx<=".ss($_REQUEST['finishx'])." ";
113: 
114: $q.= "ORDER BY testvalue DESC LIMIT 0,1"; //highest
115: 
116: $r=$NATS->DB->Query($q);
117: $row=$NATS->DB->Fetch_Array($r);
118: $highest=$row['testvalue'];
119: $dhigh=$highest;
120: $NATS->DB->Free($r);
121: 
122: $drange=$dhigh-$dlow;
123: 
124: // calculate scales
125: $xscale=$xlen/$periodx;
126: if ($drange>0) $yscale=$ylen/$drange;
127: else $yscale=1; // doesn't display but no change!
128: 
129: function posx($time) // timex
130: {
131: global $xscale,$startx,$xoff;
132: $drawx=$xscale*($time-$startx);
133: $screenx=$drawx+$xoff;
134: return $screenx;
135: }
136: 
137: function posy($value) // stock value
138: {
139: global $yscale,$dlow,$yoff;
140: $drawy=$yscale*($value-$dlow);
141: $screeny=$drawy+$yoff;
142: return $screeny;
143: }
144: 
145: 
146: 
147: // show axes scales
148: imagestring($im,1,2,ty(10),$dlow,$c_txt);
149: imagestring($im,1,2,ty($height-18),$dhigh,$c_txt);
150: 
151: 
152: 
153: // get data and draw
154: $q="SELECT testvalue,alertlevel,recordx FROM fnrecord WHERE testid=\"".ss($_REQUEST['testid'])."\" ";
155: $q.="AND recordx>=".ss($startx)." AND recordx<=".ss($finishx);
156: //$q.="LIMIT 0,100";
157: $r=$NATS->DB->Query($q);
158: $lastx=0;
159: $lasty=0;
160: 
161: $startval=0;
162: $finishval=0;
163: 
164: while ($row=mysql_fetch_array($r))
165: 	{
166: 	$x=posx($row['recordx']);
167: 	$y=posy($row['testvalue']);
168: 	
169: 	
170: 	if ($lastx!=0)
171: 		{
172: 		if ($row['alertlevel']==-1) $c=$c_black;
173: 		else if ($row['alertlevel']==0) $c=$c_green;
174: 		else if ($row['alertlevel']==1) $c=$c_orange;
175: 		else if ($row['alertlevel']==2) $c=$c_red;
176: 		else $c=$c_black;
177: 		imageline($im,$lastx,ty($lasty),$x,ty($y),$c);
178: 		}	
179: 	
180: 	//imageellipse($im,$x,ty($y),1,1,$c_red);
181: 	
182: 	$lastx=$x;
183: 	$lasty=$y;
184: 	
185: 	}
186: mysql_free_result($r);
187: 
188: 	
189: 
190: // output image
191: header("Content-type: image/png");
192: imagepng($im);
193: imagedestroy($im);
194: exit(); // just in case
195: 
196: ?>
197: