Donut Width

[File: cfdemo/donutwidth.cfm]
<cfscript>

// ChartDirector for ColdFusion API Access Point
cd = CreateObject("java", "ChartDirector.CFChart");

// A utility to allow us to create arrays with data in one line of code
function Array() {
    var result = ArrayNew(1);
    var i = 0;
    for (i = 1; i LTE ArrayLen(arguments); i = i + 1)
        result[i] = arguments[i];
    return result;
}

// Function to create the demo charts
function createChart(img)
{
    // Declare local variables
    var donutRadius = 0;
    var data = 0;
    var labels = 0;
    var c = 0;
    var ret = 0;

    // Determine the donut inner radius (as percentage of outer radius) based on
    // input parameter
    donutRadius = Int(img) * 25;

    // The data for the pie chart
    data = Array(10, 10, 10, 10, 10);

    // The labels for the pie chart
    labels = Array("Marble", "Wood", "Granite", "Plastic", "Metal");

    // Create a PieChart object of size 150 x 120 pixels, with a grey (EEEEEE)
    // background, black border and 1 pixel 3D border effect
    c = cd.PieChart(150, 120, "0xeeeeee", "0x000000", 1);

    // Set donut center at (75, 65) and the outer radius to 50 pixels. Inner radius
    // is computed according donutWidth
    c.setDonutSize(75, 60, 50, Int(50 * donutRadius / 100));

    // Add a title to show the donut width
    c.addTitle("Inner Radius = " & donutRadius & " %", "Arial", 10).setBackground(
        "0xcccccc", 0);

    // Draw the pie in 3D
    c.set3D(12);

    // Set the pie data and the pie labels
    c.setData(data, labels);

    // Disable the sector labels by setting the color to Transparent
    c.setLabelStyle("", 8, cd.Transparent);

    // Output the chart
    ret = StructNew();
    ret.imageURL = c.makeSession(GetPageContext(), "chart" & img);

    // Include tool tip for the chart
    ret.imageMap = c.getHTMLImageMap("", "",
        "title='{label}: {value}kg ({percent}%)'");

    return ret;
}

chart0 = createChart(0);
chart1 = createChart(1);
chart2 = createChart(2);
chart3 = createChart(3);
chart4 = createChart(4);

</cfscript>
<html>
<body style="margin:5px 0px 0px 5px">
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    Donut Width
</div>
<hr style="border:solid 1px #000080" />
<cfoutput>
<div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em">
    <a href='viewsource.cfm?file=#CGI.SCRIPT_NAME#'>View Source Code</a>
</div>
<img src="getchart.cfm?#chart0.imageURL#" usemap="##map0" border="0" />
<map name="map0">#chart0.imageMap#</map>
<img src="getchart.cfm?#chart1.imageURL#" usemap="##map1" border="0" />
<map name="map1">#chart1.imageMap#</map>
<img src="getchart.cfm?#chart2.imageURL#" usemap="##map2" border="0" />
<map name="map2">#chart2.imageMap#</map>
<img src="getchart.cfm?#chart3.imageURL#" usemap="##map3" border="0" />
<map name="map3">#chart3.imageMap#</map>
<img src="getchart.cfm?#chart4.imageURL#" usemap="##map4" border="0" />
<map name="map4">#chart4.imageMap#</map>
</cfoutput>
</body>
</html>