ChartDirector 6.1 (Java Edition)

Surface Perspective

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

Source Code Listing

[JSP Version] jspdemo/surfaceperspective.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 = {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0}; double[] dataY = {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) double[] dataZ = new double[dataX.length * dataY.length]; for (int yIndex = 0; yIndex < dataY.length; ++yIndex) { double y = (dataY[yIndex] - 0.5) * 2 * 3.1416; for (int xIndex = 0; xIndex < dataX.length; ++xIndex) { double x = (dataX[xIndex] - 0.5) * 2 * 3.1416; dataZ[yIndex * dataX.length + xIndex] = Math.sin(x) * Math.sin(y); } } // the perspective level int perspective = chartIndex * 12; // Create a SurfaceChart object of size 360 x 360 pixels, with white (ffffff) background and // grey (888888) border. SurfaceChart 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 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 Perspective

View Source Code
```

 ```import java.awt.*; import java.awt.event.*; import javax.swing.*; import ChartDirector.*; public class surfaceperspective implements DemoModule { //Name of demo program public String toString() { return "Surface Perspective"; } //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 = {0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0}; double[] dataY = {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) double[] dataZ = new double[dataX.length * dataY.length]; for (int yIndex = 0; yIndex < dataY.length; ++yIndex) { double y = (dataY[yIndex] - 0.5) * 2 * 3.1416; for (int xIndex = 0; xIndex < dataX.length; ++xIndex) { double x = (dataX[xIndex] - 0.5) * 2 * 3.1416; dataZ[yIndex * dataX.length + xIndex] = Math.sin(x) * Math.sin(y); } } // the perspective level int perspective = chartIndex * 12; // Create a SurfaceChart object of size 360 x 360 pixels, with white (ffffff) background and // grey (888888) border. SurfaceChart 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); } //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 surfaceperspective(); //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); } }```