<?php
require_once("/usr/local/lib/php/20060613/phpchartdir.php");

# The data for the upper and lower bounding lines
$upperY = array(60, 60, 100, 100, 60, 60);
$lowerY = array(40, 40, 80, 80, 40, 40);
$zoneX = array(0, 2.5, 3.5, 5.5, 6.5, 10);

# The data for the spline curve
$curveY = array(50, 44, 54, 48, 58, 50, 90, 85, 104, 82, 96, 90, 74, 52, 35, 58, 46,
    54, 48, 52, 50);
$curveX = array(0, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8,
    8.5, 9, 9.5, 10);

# Create a XYChart object of size 600 x 300 pixels, with a light grey (cccccc)
# background, black border, and 1 pixel 3D border effect.
$c = new XYChart(600, 300, 0xcccccc, 0x000000, 1);

#Set directory for loading images to current script directory
#Need when running under Microsoft IIS
$c->setSearchPath(dirname(__FILE__));

# Set the plotarea at (55, 58) and of size 520 x 195 pixels, with white background.
# Turn on both horizontal and vertical grid lines with light grey color (cccccc)
$c->setPlotArea(55, 58, 520, 195, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);

# Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9 pts
# Arial Bold font. Set the background and border color to Transparent.
$legendObj = $c->addLegend(55, 32, false, "arialbd.ttf", 9);
$legendObj->setBackground(Transparent);

# Add a title box to the chart using 15 pts Times Bold Italic font. The title is in
# CDML and includes embedded images for highlight. The text is white (ffffff) on a
# black background, with a 1 pixel 3D border.
$textBoxObj = $c->addTitle(
    "<*block,valign=absmiddle*><*img=star.png*><*img=star.png*> Performance ".
    "Enhancer <*img=star.png*><*img=star.png*><*/*>", "timesbi.ttf", 15, 0xffffff);
$textBoxObj->setBackground(0x000000, -1, 1);

# Add a title to the y axis
$c->yAxis->setTitle("Temperature");

# Add a title to the x axis using CMDL
$c->xAxis->setTitle(
    "<*block,valign=absmiddle*><*img=clock.png*>  Elapsed Time (hour)<*/*>");

# Set the axes width to 2 pixels
$c->xAxis->setWidth(2);
$c->yAxis->setWidth(2);

# Add a purple (800080) spline layer to the chart with a line width of 2 pixels
$splineLayer = $c->addSplineLayer($curveY, 0x800080, "Molecular Temperature");
$splineLayer->setXData($curveX);
$splineLayer->setLineWidth(2);

# Add a line layer to the chart with two dark green (338033) data sets, and a line
# width of 2 pixels
$lineLayer = $c->addLineLayer2();
$lineLayer->addDataSet($upperY, 0x338033, "Target Zone");
$lineLayer->addDataSet($lowerY, 0x338033);
$lineLayer->setXData($zoneX);
$lineLayer->setLineWidth(2);

# Color the zone between the upper zone line and lower zone line as semi-transparent
# light green (8099ff99)
$c->addInterLineLayer($lineLayer->getLine(0), $lineLayer->getLine(1), 0x8099ff99,
    0x8099ff99);

# If the spline line gets above the upper zone line, color to area between the lines
# red (ff0000)
$c->addInterLineLayer($splineLayer->getLine(0), $lineLayer->getLine(0), 0xff0000,
    Transparent);

# If the spline line gets below the lower zone line, color to area between the lines
# blue (0000ff)
$c->addInterLineLayer($splineLayer->getLine(0), $lineLayer->getLine(1), Transparent,
    0x0000ff);

# Add a custom CDML text at the bottom right of the plot area as the logo
$textBoxObj = $c->addText(575, 250,
    "<*block,valign=absmiddle*><*img=small_molecule.png*> <*block*>".
    "<*font=timesbi.ttf,size=10,color=804040*>Molecular\nEngineering<*/*>");
$textBoxObj->setAlignment(BottomRight);

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