70 lines
3.0 KiB
PHP
70 lines
3.0 KiB
PHP
<?php
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require_once("../lib/phpchartdir.php");
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# The value to display on the meter
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$value = 4.75;
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# Create an AugularMeter object of size 110 x 110 pixels, using silver background
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# color with a black 2 pixel 3D depressed border.
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$m = new AngularMeter(110, 110, silverColor(), 0x000000, -2);
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# Set meter appearance according to a parameter
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if ($_REQUEST["img"] == "0") {
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# Set the meter center at bottom left corner (15, 95), with radius 85 pixels.
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# Meter spans from 90 - 0 degrees.
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$m->setMeter(15, 95, 85, 90, 0);
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# Add a label to the meter centered at (35, 75)
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$m->addText(35, 75, "VDC", "arialbd.ttf", 12, TextColor, Center);
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# Add a text box to show the value at top right corner (103, 7)
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$textBoxObj = $m->addText(103, 7, $m->formatValue($value, "2"), "arial.ttf", 8,
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0xffffff, TopRight);
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$textBoxObj->setBackground(0, 0, -1);
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} else if ($_REQUEST["img"] == "1") {
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# Set the meter center at top left corner (15, 15), with radius 85 pixels. Meter
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# spans from 90 - 180 degrees.
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$m->setMeter(15, 15, 85, 90, 180);
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# Add a label to the meter centered at (35, 35)
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$m->addText(35, 35, "AMP", "arialbd.ttf", 12, TextColor, Center);
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# Add a text box to show the value at bottom right corner (103, 103)
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$textBoxObj = $m->addText(103, 103, $m->formatValue($value, "2"), "arial.ttf", 8,
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0xffffff, BottomRight);
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$textBoxObj->setBackground(0, 0, -1);
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} else if ($_REQUEST["img"] == "2") {
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# Set the meter center at top right corner (15, 95), with radius 85 pixels. Meter
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# spans from 270 - 180 degrees.
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$m->setMeter(95, 15, 85, 270, 180);
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# Add a label to the meter centered at (75, 35)
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$m->addText(75, 35, "KW", "arialbd.ttf", 12, TextColor, Center);
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# Add a text box to show the value at bottom left corner (7, 103)
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$textBoxObj = $m->addText(7, 103, $m->formatValue($value, "2"), "arial.ttf", 8,
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0xffffff, BottomLeft);
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$textBoxObj->setBackground(0, 0, -1);
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} else {
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# Set the meter center at bottom right corner (95, 95), with radius 85 pixels.
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# Meter spans from 270 - 360 degrees.
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$m->setMeter(95, 95, 85, 270, 360);
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# Add a label to the meter centered at (75, 75)
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$m->addText(75, 75, "RPM", "arialbd.ttf", 12, TextColor, Center);
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# Add a text box to show the value at top left corner (7, 7)
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$textBoxObj = $m->addText(7, 7, $m->formatValue($value, "2"), "arial.ttf", 8,
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0xffffff, TopLeft);
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$textBoxObj->setBackground(0, 0, -1);
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}
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# Meter scale is 0 - 10, with a major tick every 2 units, and minor tick every 1 unit
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$m->setScale(0, 10, 2, 1);
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# Set 0 - 6 as green (99ff99) zone, 6 - 8 as yellow (ffff00) zone, and 8 - 10 as red
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# (ff3333) zone
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$m->addZone(0, 6, 0x99ff99, 0x808080);
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$m->addZone(6, 8, 0xffff00, 0x808080);
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$m->addZone(8, 10, 0xff3333, 0x808080);
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# Add a semi-transparent black (80000000) pointer at the specified value
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$m->addPointer($value, 0x80000000);
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# output the chart
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header("Content-type: image/png");
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print($m->makeChart2(PNG));
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?>
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