<?php
require_once("../lib/phpchartdir.php");

# The value to display on the meter
$value = 27.48;

# Create an AngularMeter object of size 200 x 115 pixels, with silver background
# color, black border, 2 pixel 3D border border and rounded corners
$m = new AngularMeter(200, 115, silverColor(), 0x000000, 2);
$m->setRoundedFrame();

# Set the meter center at (100, 100), with radius 85 pixels, and span from -90 to +90
# degress (semi-circle)
$m->setMeter(100, 100, 85, -90, 90);

# Meter scale is 0 - 100, with major tick every 20 units, minor tick every 10 units,
# and micro tick every 5 units
$m->setScale(0, 100, 20, 10, 5);

# Set 0 - 60 as green (66FF66) zone
$m->addZone(0, 60, 0, 85, 0x66ff66);

# Set 60 - 80 as yellow (FFFF33) zone
$m->addZone(60, 80, 0, 85, 0xffff33);

# Set 80 - 100 as red (FF6666) zone
$m->addZone(80, 100, 0, 85, 0xff6666);

# Add a text label centered at (100, 60) with 12 pts Arial Bold font
$m->addText(100, 60, "PSI", "arialbd.ttf", 12, TextColor, Center);

# Add a text box at the top right corner of the meter showing the value formatted to
# 2 decimal places, using white text on a black background, and with 1 pixel 3D
# depressed border
$textBoxObj = $m->addText(156, 8, $m->formatValue($value, "2"), "arial.ttf", 8,
    0xffffff);
$textBoxObj->setBackground(0x000000, 0, -1);

# Add a semi-transparent blue (40666699) pointer with black border at the specified
# value
$m->addPointer($value, 0x40666699, 0x000000);

# output the chart
header("Content-type: image/png");
print($m->makeChart2(PNG));
?>