ChartDirector 7.0 (Java Edition)

Surface Lighting


      

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

Source Code Listing

[JSP Version] jspdemo/surfacelighting.jsp
<%@page import="ChartDirector.*, java.util.*" %> <%! // Function to create the demo charts void createChart(WebChartViewer viewer, int chartIndex) { // The x and y coordinates of the grid double[] dataX = {-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10}; double[] dataY = {-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). double[] dataZ = new double[dataX.length * dataY.length]; for(int yIndex = 0; yIndex < dataY.length; ++yIndex) { double y = dataY[yIndex]; for(int xIndex = 0; xIndex < dataX.length; ++xIndex) { double x = dataX[xIndex]; dataZ[yIndex * dataX.length + xIndex] = x * Math.sin(y) + y * Math.sin(x); } } // Create a SurfaceChart object of size 380 x 400 pixels, with white (ffffff) background and // grey (888888) border. SurfaceChart 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, Chart.SVG); } %> <% // This example includes 4 charts WebChartViewer[] viewers = new WebChartViewer[4]; for (int i = 0; i < viewers.length; ++i) { viewers[i] = new WebChartViewer(request, "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.jsp?file=<%=request.getServletPath()%>">View Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <% for (int i = 0; i < viewers.length; ++i) { out.write(viewers[i].renderHTML(response)); out.write(" "); } %> </body> </html>