ChartDirector 7.0 (PHP Edition)

Surface Wireframe


          

This example demonstrates the rectangular and triangular wireframes of a surface at different interpolation levels, configured using SurfaceChart.setShadingMode and SurfaceChart.setInterpolation.

Source Code Listing

[File: phpdemo/surfacewireframe.php]
<?php require_once("../lib/phpchartdir.php"); function createChart($viewer, $chartIndex) { # The x and y coordinates of the grid $dataX = array(-2, -1, 0, 1, 2); $dataY = array(-2, -1, 0, 1, 2); # The values at the grid points. In this example, we will compute the values using the formula z # = square_root(15 - x * x - y * y). $dataZ = array_fill(0, count($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] = sqrt(15 - $x * $x - $y * $y); } } # Create a SurfaceChart object of size 380 x 340 pixels, with white (ffffff) background and grey # (888888) border. $c = new SurfaceChart(380, 340, 0xffffff, 0x888888); # Demonstrate various wireframes with and without interpolation if ($chartIndex == 0) { # Original data without interpolation $c->addTitle("5 x 5 Data Points\nStandard Shading", "Arial Bold", 12); $c->setContourColor(0x80ffffff); } else if ($chartIndex == 1) { # Original data, spline interpolated to 40 x 40 for smoothness $c->addTitle("5 x 5 Points - Spline Fitted to 40 x 40\nStandard Shading", "Arial Bold", 12); $c->setContourColor(0x80ffffff); $c->setInterpolation(40, 40); } else if ($chartIndex == 2) { # Rectangular wireframe of original data $c->addTitle("5 x 5 Data Points\nRectangular Wireframe"); $c->setShadingMode(RectangularFrame); } else if ($chartIndex == 3) { # Rectangular wireframe of original data spline interpolated to 40 x 40 $c->addTitle("5 x 5 Points - Spline Fitted to 40 x 40\nRectangular Wireframe"); $c->setShadingMode(RectangularFrame); $c->setInterpolation(40, 40); } else if ($chartIndex == 4) { # Triangular wireframe of original data $c->addTitle("5 x 5 Data Points\nTriangular Wireframe"); $c->setShadingMode(TriangularFrame); } else { # Triangular wireframe of original data spline interpolated to 40 x 40 $c->addTitle("5 x 5 Points - Spline Fitted to 40 x 40\nTriangular Wireframe"); $c->setShadingMode(TriangularFrame); $c->setInterpolation(40, 40); } # Set the center of the plot region at (200, 170), and set width x depth x height to 200 x 200 x # 150 pixels $c->setPlotRegion(200, 170, 200, 200, 150); # Set the plot region wall thichness to 5 pixels $c->setWallThickness(5); # Set the elevation and rotation angles to 20 and 30 degrees $c->setViewAngle(20, 30); # Set the data to use to plot the chart $c->setData($dataX, $dataY, $dataZ); # 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], $i); } ?> <!DOCTYPE html> <html> <head> <title>Surface Wireframe</title> <!-- Include ChartDirector Javascript Library to support chart interactions --> <script type="text/javascript" src="cdjcv.js"></script> </head> <body style="margin:5px 0px 0px 5px"> <div style="font:bold 18pt verdana;"> Surface Wireframe </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.php?file=<?=basename(__FILE__)?>">View Chart Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <?php for ($i = 0; $i < count($viewers); ++$i) { echo $viewers[$i]->renderHTML(), " "; } ?> </body> </html>