ChartDirector 7.0 (PHP Edition)

Surface Perspective


          

This example demonstrates the effects of various perspective depth, configured using ThreeDChart.setPerspective.

Source Code Listing

[File: phpdemo/surfaceperspective.php]
<?php require_once("../lib/phpchartdir.php"); function createChart($viewer, $chartIndex) { # The x and y coordinates of the grid $dataX = array(0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0); $dataY = array(0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0); # The values at the grid points. In this example, we will compute the values using the formula z # = sin((x - 0.5) * 2 * pi) * sin((y - 0.5) * 2 * pi) $dataZ = array_fill(0, count($dataX) * count($dataY), 0); for($yIndex = 0; $yIndex < count($dataY); ++$yIndex) { $y = ($dataY[$yIndex] - 0.5) * 2 * 3.1416; for($xIndex = 0; $xIndex < count($dataX); ++$xIndex) { $x = ($dataX[$xIndex] - 0.5) * 2 * 3.1416; $dataZ[$yIndex * count($dataX) + $xIndex] = sin($x) * sin($y); } } # the perspective level $perspective = $chartIndex * 12; # Create a SurfaceChart object of size 360 x 360 pixels, with white (ffffff) background and grey # (888888) border. $c = new SurfaceChart(360, 360, 0xffffff, 0x888888); # Set the perspective level $c->setPerspective($perspective); $c->addTitle("Perspective = " . $perspective); # Set the center of the plot region at (195, 165), and set width x depth x height to 200 x 200 x # 150 pixels $c->setPlotRegion(195, 165, 200, 200, 150); # Set the plot region wall thichness to 5 pixels $c->setWallThickness(5); # Set the elevation and rotation angles to 30 and 30 degrees $c->setViewAngle(30, 30); # Set the data to use to plot the chart $c->setData($dataX, $dataY, $dataZ); # Spline interpolate data to a 40 x 40 grid for a smooth surface $c->setInterpolation(40, 40); # Use smooth gradient coloring. $c->colorAxis->setColorGradient(); # Output the chart $viewer->setChart($c, SVG); } # This example includes 6 charts $viewers = array(); for ($i = 0; $i < 6; ++$i) { $viewers[$i] = new WebChartViewer("chart$i"); createChart($viewers[$i], $i); } ?> <!DOCTYPE html> <html> <head> <title>Surface Perspective</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Surface Perspective </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <?php for ($i = 0; $i < count($viewers); ++$i) { echo $viewers[$i]->renderHTML(), " "; } ?> </body> </html>