ChartDirector 6.1 (Java 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

[JSP Version] jspdemo/surfacewireframe.jsp
 ```<%@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 = {-2, -1, 0, 1, 2}; double[] dataY = {-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). 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] = Math.sqrt(15 - x * x - y * y); } } // Create a SurfaceChart object of size 380 x 340 pixels, with white (ffffff) background and // grey (888888) border. SurfaceChart 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(Chart.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(Chart.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(Chart.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(Chart.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 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); ImageWithHotSpot chart4 = createChart(request, 4); ImageWithHotSpot chart5 = createChart(request, 5); %>
Surface Wireframe

View Source Code
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 ```import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class surfacewireframe implements DemoModule { //Name of demo program public String toString() { return "Surface Wireframe"; } //Number of charts produced in this demo public int getNoOfCharts() { return 6; } //Main code for creating charts public void createChart(ChartViewer viewer, int chartIndex) { // The x and y coordinates of the grid double[] dataX = {-2, -1, 0, 1, 2}; double[] dataY = {-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). 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] = Math.sqrt(15 - x * x - y * y); } } // Create a SurfaceChart object of size 380 x 340 pixels, with white (ffffff) background and // grey (888888) border. SurfaceChart 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(Chart.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(Chart.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(Chart.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(Chart.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); } //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 surfacewireframe(); //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); } }```