ChartDirector 7.0 (ASP/COM/VB Edition)

2D Pie Shading


          

This example demonstrates various sector shading effects applicable to 2D pie charts.

Source Code Listing

[Web Version (in ASP)] aspdemo\pieshading.asp
<%@ language="vbscript" %> <% Set cd = CreateObject("ChartDirector.API") ' This script can draw different charts depending on the chartIndex Sub createChart(viewer, chartIndex) ' The data for the pie chart data = Array(18, 30, 20, 15) ' The labels for the pie chart labels = Array("Labor", "Licenses", "Facilities", "Production") ' The colors to use for the sectors colors = Array(&H66aaee, &Heebb22, &Hbbbbbb, &H8844ff) ' Create a PieChart object of size 200 x 220 pixels. Use a vertical gradient color from blue ' (0000cc) to deep blue (000044) as background. Use rounded corners of 16 pixels radius. Set c = cd.PieChart(200, 220) Call c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight(), &H0000cc, &H000044)) Call c.setRoundedFrame(&Hffffff, 16) ' Set the center of the pie at (100, 120) and the radius to 80 pixels Call c.setPieSize(100, 120, 80) ' Set the pie data Call c.setData(data, labels) ' Set the sector colors Call c.setColors2(cd.DataColor, colors) ' Demonstrates various shading modes If chartIndex = 0 Then Call c.addTitle("Default Shading", "bold", 12, &Hffffff) ElseIf chartIndex = 1 Then Call c.addTitle("Local Gradient", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.LocalGradientShading) ElseIf chartIndex = 2 Then Call c.addTitle("Global Gradient", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.GlobalGradientShading) ElseIf chartIndex = 3 Then Call c.addTitle("Concave Shading", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.ConcaveShading) ElseIf chartIndex = 4 Then Call c.addTitle("Rounded Edge", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.RoundedEdgeShading) ElseIf chartIndex = 5 Then Call c.addTitle("Radial Gradient", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.RadialShading) End If ' Disable the sector labels by setting the color to Transparent Call c.setLabelStyle("", 8, cd.Transparent) ' Output the chart Call viewer.setChart(c, cd.SVG) ' Include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("", "", "title='{label}: US${value}K ({percent}%)'") End Sub ' This example includes 6 charts Dim viewers(5) For i = 0 To Ubound(viewers) Set viewers(i) = cd.WebChartViewer(Request, "chart" & i) Call createChart(viewers(i), i) Next %> <!DOCTYPE html> <html> <head> <title>2D Pie Shading</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;"> 2D Pie Shading </div> <hr style="border:solid 1px #000080; background:#000080" /> <div style="font:10pt verdana; margin-bottom:1.5em"> <a href="viewsource.asp?file=<%= Request("SCRIPT_NAME") %>">View Chart Source Code</a> </div> <!-- ****** Here are the chart images ****** --> <% For i = 0 To Ubound(viewers) Call Response.Write(viewers(i).renderHTML()) Call Response.Write(" ") Next %> </body> </html>

[Windows Version (in Visual Basic)] vbdemo\pieshading.cls
Public Sub createChart(viewer As Object, chartIndex As Integer) Dim cd As New ChartDirector.API ' The data for the pie chart Dim data() data = Array(18, 30, 20, 15) ' The labels for the pie chart Dim labels() labels = Array("Labor", "Licenses", "Facilities", "Production") ' The colors to use for the sectors Dim colors() colors = Array(&H66aaee, &Heebb22, &Hbbbbbb, &H8844ff) ' Create a PieChart object of size 200 x 220 pixels. Use a vertical gradient color from blue ' (0000cc) to deep blue (000044) as background. Use rounded corners of 16 pixels radius. Dim c As PieChart Set c = cd.PieChart(200, 220) Call c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight(), &H0000cc, &H000044)) Call c.setRoundedFrame(&Hffffff, 16) ' Set the center of the pie at (100, 120) and the radius to 80 pixels Call c.setPieSize(100, 120, 80) ' Set the pie data Call c.setData(data, labels) ' Set the sector colors Call c.setColors2(cd.DataColor, colors) ' Demonstrates various shading modes If chartIndex = 0 Then Call c.addTitle("Default Shading", "bold", 12, &Hffffff) ElseIf chartIndex = 1 Then Call c.addTitle("Local Gradient", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.LocalGradientShading) ElseIf chartIndex = 2 Then Call c.addTitle("Global Gradient", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.GlobalGradientShading) ElseIf chartIndex = 3 Then Call c.addTitle("Concave Shading", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.ConcaveShading) ElseIf chartIndex = 4 Then Call c.addTitle("Rounded Edge", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.RoundedEdgeShading) ElseIf chartIndex = 5 Then Call c.addTitle("Radial Gradient", "bold", 12, &Hffffff) Call c.setSectorStyle(cd.RadialShading) End If ' Disable the sector labels by setting the color to Transparent Call c.setLabelStyle("", 8, cd.Transparent) ' Output the chart Set viewer.Picture = c.makePicture() 'include tool tip for the chart viewer.ImageMap = c.getHTMLImageMap("clickable", "", _ "title='{label}: US${value}K ({percent}%)'") End Sub