blacksemicirclemeter.php
Back to Chart Graphics
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<?php
require_once("../lib/phpchartdir.php");
function createChart($viewer, $chartIndex)
{
# The value to display on the meter
$value = 72.55;
# Create an AngularMeter object of size 300 x 180 pixels with transparent background
$m = new AngularMeter(300, 180, Transparent);
# Set the default text and line colors to white (0xffffff)
$m->setColor(TextColor, 0xffffff);
$m->setColor(LineColor, 0xffffff);
# Center at (150, 150), scale radius = 128 pixels, scale angle -90 to +90 degrees
$m->setMeter(150, 150, 128, -90, 90);
# Gradient color for the border to make it silver-like
$ringGradient = array(1, 0x909090, 0.5, 0xd6d6d6, 0, 0xeeeeee, -0.5, 0xd6d6d6, -1, 0x909090);
# Add a black (0x000000) scale background of 148 pixels radius with a 10 pixel thick silver
# border
$m->addScaleBackground(148, 0, 10, $m->relativeLinearGradient($ringGradient, 45, 148));
# 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 the scale label style to 15pt Arial Italic. Set the major/minor/micro tick lengths to
# 16/16/10 pixels pointing inwards, and their widths to 2/1/1 pixels.
$m->setLabelStyle("Arial Italic", 16);
$m->setTickLength(-16, -16, -10);
$m->setLineWidth(0, 2, 1, 1);
# Demostrate different types of color scales and putting them at different positions
$smoothColorScale = array(0, 0x0000ff, 25, 0x0088ff, 50, 0x00ff00, 75, 0xdddd00, 100, 0xff0000);
$stepColorScale = array(0, 0x00aa00, 60, 0xddaa00, 80, 0xcc0000, 100);
$highLowColorScale = array(0, 0x00ff00, 70, Transparent, 100, 0xff0000);
if ($chartIndex == 0) {
# Add the smooth color scale at the default position
$m->addColorScale($smoothColorScale);
} else if ($chartIndex == 1) {
# Add the smooth color scale starting at radius 128 with zero width and ending at radius 128
# with 16 pixels inner width
$m->addColorScale($smoothColorScale, 128, 0, 128, -16);
} else if ($chartIndex == 2) {
# Add the smooth color scale starting at radius 70 with zero width and ending at radius 60
# with 20 pixels outer width
$m->addColorScale($smoothColorScale, 70, 0, 60, 20);
} else if ($chartIndex == 3) {
# Add the high/low color scale at the default position
$m->addColorScale($highLowColorScale);
} else if ($chartIndex == 4) {
# Add the step color scale at the default position
$m->addColorScale($stepColorScale);
} else {
# Add the smooth color scale at radius 60 with 15 pixels outer width
$m->addColorScale($smoothColorScale, 60, 15);
}
# Add a text label centered at (150, 125) with 15pt Arial Italic font
$m->addText(150, 125, "CPU", "Arial Italic", 15, TextColor, BottomCenter);
# Add a red (0xff0000) pointer at the specified value
$m->addPointer2($value, 0xff0000);
# Add glare up to radius 138 (= region inside border)
if ($chartIndex % 2 == 0) {
$m->addGlare(138);
}
# Output the chart
$viewer->setChart($m, SVG);
}
# This example includes 6 charts
$viewers = array();
for ($i = 0; $i < 6; ++$i) {
$viewers[$i] = new WebChartViewer("chart$i");
createChart($viewers[$i], $i);
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Black Semicircle Meters</title>
<!-- Include ChartDirector Javascript Library to support chart interactions -->
<script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
<div style="font:bold 18pt verdana;">
Black Semicircle Meters
</div>
<hr style="border:solid 1px #000080; background:#000080" />
<div style="font:10pt verdana; margin-bottom:1.5em">
<a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
</div>
<!-- ****** Here are the chart images ****** -->
<?php
for ($i = 0; $i < count($viewers); ++$i) {
echo $viewers[$i]->renderHTML(), " ";
}
?>
</body>
</html>
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