<?php
require_once("/usr/local/lib/php/20100525/phpchartdir.php");

# The (x, y, z) coordinates of the scattered data
$dataX = array(0.5, 1.9, 4.9, 1.0, 8.9, 9.8, 5.9, 2.9, 6.8, 9.0, 0.0, 8.9, 1.9, 4.8,
    2.4, 3.4, 7.9, 7.5, 4.8, 7.5, 9.5, 0.4, 8.9, 0.9, 5.4, 9.4, 2.9, 8.9, 0.9, 8.9,
    10.0, 1.0, 6.8, 3.8, 9.0, 5.3, 6.4, 4.9, 4.5, 2.0, 5.4, 0.0, 10.0, 3.9, 5.4, 5.9,
    5.8, 0.3, 4.4, 8.3);
$dataY = array(3.3, 3.0, 0.7, 1.0, 9.3, 4.5, 8.4, 0.1, 0.8, 0.1, 9.3, 1.8, 4.3, 1.3,
    2.3, 5.4, 6.9, 9.0, 9.8, 7.5, 1.8, 1.4, 4.5, 7.8, 3.8, 4.0, 2.9, 2.4, 3.9, 2.9,
    2.3, 9.3, 2.0, 3.4, 4.8, 2.3, 3.4, 2.3, 1.5, 7.8, 4.5, 0.9, 6.3, 2.4, 6.9, 2.8,
    1.3, 2.9, 6.4, 6.3);
$dataZ = array(6.6, 12.5, 7.4, 6.2, 9.6, 13.6, 19.9, 2.2, 6.9, 3.4, 8.7, 8.4, 7.8,
    8.0, 9.4, 11.9, 9.6, 15.7, 12.0, 13.3, 9.6, 6.4, 9.0, 6.9, 4.6, 9.7, 10.6, 9.2,
    7.0, 6.9, 9.7, 8.6, 8.0, 13.6, 13.2, 5.9, 9.0, 3.2, 8.3, 9.7, 8.2, 6.1, 8.7, 5.6,
    14.9, 9.8, 9.3, 5.1, 10.8, 9.8);

# Create a SurfaceChart object of size 680 x 550 pixels. Set background to brushed
# silver and border to grey (888888). Set the top-left and bottom-right corners to
# rounded corners with 20 pixels radius.
$c = new SurfaceChart(680, 550, brushedSilverColor(), 0x888888);
$c->setRoundedFrame(0xffffff, 20, 0, 20, 0);

# Add a title to the chart using 20 points Times New Roman Italic font. Set
# top/bottom margin to 8 pixels.
$title = $c->addTitle("Surface Created Using Scattered Data Points", "timesi.ttf", 20
    );
$title->setMargin2(0, 0, 8, 8);

# Add a 2 pixel wide black (000000) separator line under the title
$c->addLine(10, $title->getHeight(), $c->getWidth() - 10, $title->getHeight(),
    0x000000, 2);

# Set the center of the plot region at (290, 235), and set width x depth x height to
# 360 x 360 x 180 pixels
$c->setPlotRegion(290, 235, 360, 360, 180);

# Set the elevation and rotation angles to 45 and -45 degrees
$c->setViewAngle(45, -45);

# Set the perspective level to 30
$c->setPerspective(30);

# Set the data to use to plot the chart
$c->setData($dataX, $dataY, $dataZ);

# Add a color axis (the legend) in which the top right corner is anchored at (660,
# 80). Set the length to 200 pixels and the labels on the right side.
$cAxis = $c->setColorAxis(660, 80, TopRight, 200, Right);

# Set the color axis title with 12 points Arial Bold font
$cAxis->setTitle("Z Title Placeholder", "arialbd.ttf", 12);

# Add a bounding box with light grey (eeeeee) background and grey (888888) border.
# Set the top-left and bottom-right corners to rounded corners of  10 pixels radius.
$cAxis->setBoundingBox(0xeeeeee, 0x888888);
$cAxis->setRoundedCorners(10, 0, 10, 0);

# Set surface grid lines to semi-transparent black (cc000000)
$c->setSurfaceAxisGrid(0xcc000000);

# Set contour lines to semi-transparent white (80ffffff)
$c->setContourColor(0x80ffffff);

# Set the walls to black in color
$c->setWallColor(0x000000);

# Set the xyz major wall grid lines to white (ffffff), and minor wall grid lines to
# grey (888888)
$c->setWallGrid(0xffffff, 0xffffff, 0xffffff, 0x888888, 0x888888, 0x888888);

# Set the wall thickness to 0
$c->setWallThickness(0, 0, 0);

# Show only the xy wall, and hide the yz and zx walls.
$c->setWallVisibility(true, false, false);

# Set the x, y and z axis titles using 12 points Arial Bold font
$c->xAxis->setTitle("X Title\nPlaceholder", "arialbd.ttf", 12);
$c->yAxis->setTitle("Y Title\nPlaceholder", "arialbd.ttf", 12);

# Output the chart
header("Content-type: image/jpeg");
print($c->makeChart2(JPG));
?>
