



This example demonstrates the effects of various surface lighting parameters, configured using SurfaceChart.setLighting.
ChartDirector 6.1 (Java Edition)
Surface Lighting
Source Code Listing
<%@page import="ChartDirector.*" %> <%@page import="javax.servlet.http.*" %> <%! // A simple structure to represent a chart image with an image map private static class ImageWithHotSpot { String imageURL; String imageMap; } // Function to create the demo charts ImageWithHotSpot createChart(HttpServletRequest request, 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 ImageWithHotSpot ret = new ImageWithHotSpot(); ret.imageURL = c.makeSession(request, "chart" + chartIndex, Chart.JPG); return ret; } %> <% ImageWithHotSpot chart0 = createChart(request, 0); ImageWithHotSpot chart1 = createChart(request, 1); ImageWithHotSpot chart2 = createChart(request, 2); ImageWithHotSpot chart3 = createChart(request, 3); %> <html> <body style="margin:5px 0px 0px 5px"> <div style="font-size:18pt; font-family:verdana; font-weight:bold"> Surface Lighting </div> <hr color="#000080"> <div style="font-size:10pt; font-family:verdana; margin-bottom:1.5em"> <a href="viewsource.jsp?file=<%=request.getServletPath()%>">View Source Code</a> </div> <img src='<%=response.encodeURL("getchart.jsp?"+chart0.imageURL)%>'> <img src='<%=response.encodeURL("getchart.jsp?"+chart1.imageURL)%>'> <img src='<%=response.encodeURL("getchart.jsp?"+chart2.imageURL)%>'> <img src='<%=response.encodeURL("getchart.jsp?"+chart3.imageURL)%>'> </body> </html> |
import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class surfacelighting implements DemoModule { //Name of demo program public String toString() { return "Surface Lighting"; } //Number of charts produced in this demo public int getNoOfCharts() { return 4; } //Main code for creating charts public void createChart(ChartViewer 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); } //Allow this module to run as standalone program for easy testing public static void main(String[] args) { //Instantiate an instance of this demo module DemoModule demo = new surfacelighting(); //Create and set up the main window JFrame frame = new JFrame(demo.toString()); frame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) {System.exit(0);} }); frame.getContentPane().setBackground(Color.white); frame.getContentPane().setLayout(new FlowLayout(FlowLayout.LEFT)); frame.setSize(800, 450); // Create the charts and put them in the content pane for (int i = 0; i < demo.getNoOfCharts(); ++i) { ChartViewer viewer = new ChartViewer(); demo.createChart(viewer, i); frame.getContentPane().add(viewer); } // Display the window frame.setVisible(true); } } |