ChartDirector 7.0 (PHP Edition)

Surface Lighting


      

This example demonstrates the effects of various surface lighting parameters, configured using SurfaceChart.setLighting.

Source Code Listing

[File: phpdemo/surfacelighting.php]
<?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>