surfacelighting.php
Back to Chart Graphics
<![CDATA[
<?php
require_once("../lib/phpchartdir.php");
function createChart($viewer, $chartIndex)
{
# The x and y coordinates of the grid
$dataX = array(-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10);
$dataY = array(-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10);
# The values at the grid points. In this example, we will compute the values using the formula z
# = x * sin(y) + y * sin(x).
$dataZ = array_fill(0, count($dataX) * count($dataY), 0);
for($yIndex = 0; $yIndex < count($dataY); ++$yIndex) {
$y = $dataY[$yIndex];
for($xIndex = 0; $xIndex < count($dataX); ++$xIndex) {
$x = $dataX[$xIndex];
$dataZ[$yIndex * count($dataX) + $xIndex] = $x * sin($y) + $y * sin($x);
}
}
# Create a SurfaceChart object of size 380 x 400 pixels, with white (ffffff) background and grey
# (888888) border.
$c = new SurfaceChart(380, 400, 0xffffff, 0x888888);
# Demonstrate various lighting parameters
if ($chartIndex == 0) {
$c->addTitle(
"Default Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, Specular = 1, ".
"Shininess = 8");
} else if ($chartIndex == 1) {
$c->addTitle(
"Matte (Non-Glossy) Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, Specular = ".
"0, Shininess = 0");
$c->setLighting(0.5, 0.5, 0, 0);
} else if ($chartIndex == 2) {
$c->addTitle(
"Flat Lighting<*br*><*size=10*>Ambient = 1, Diffuse = 0, Specular = 0, Shininess = 0");
$c->setLighting(1, 0, 0, 0);
} else {
$c->addTitle(
"Strong Glossy Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, Specular = 4, ".
"Shininess = 32");
$c->setLighting(0.5, 0.5, 4, 32);
}
# Set the center of the plot region at (175, 200), and set width x depth x height to 200 x 200 x
# 160 pixels
$c->setPlotRegion(175, 200, 200, 200, 160);
# Set the plot region wall thichness to 5 pixels
$c->setWallThickness(5);
# Set the elevation and rotation angles to 45 and 60 degrees
$c->setViewAngle(45, 60);
# Set the perspective level to 35
$c->setPerspective(35);
# Set the data to use to plot the chart
$c->setData($dataX, $dataY, $dataZ);
# Spline interpolate data to a 50 x 50 grid for a smooth surface
$c->setInterpolation(50, 50);
# Set contour lines to semi-transparent black (c0000000)
$c->setContourColor(0xc0000000);
# Output the chart
$viewer->setChart($c, SVG);
}
# This example includes 4 charts
$viewers = array();
for ($i = 0; $i < 4; ++$i) {
$viewers[$i] = new WebChartViewer("chart$i");
createChart($viewers[$i], $i);
}
?>
<!DOCTYPE html>
<html>
<head>
<title>Surface Lighting</title>
<!-- Include ChartDirector Javascript Library to support chart interactions -->
<script type="text/javascript" src="cdjcv.js"></script>
</head>
<body style="margin:5px 0px 0px 5px">
<div style="font:bold 18pt verdana;">
Surface Lighting
</div>
<hr style="border:solid 1px #000080; background:#000080" />
<div style="font:10pt verdana; margin-bottom:1.5em">
<a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a>
</div>
<!-- ****** Here are the chart images ****** -->
<?php
for ($i = 0; $i < count($viewers); ++$i) {
echo $viewers[$i]->renderHTML(), " ";
}
?>
</body>
</html>
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