public override void Initialize()
{
base.Initialize();
// remove all panels
nChartControl1.Panels.Clear();
// create a Venn chart
NChart chart = new NVennChart();
// create a title
NLabel title = new NLabel("Five Set Venn");
title.TextStyle.FontStyle = new NFontStyle("Times New Roman", 18, FontStyle.Italic);
title.TextStyle.FillStyle = new NColorFillStyle(GreyBlue);
// create a Venn series
NVennSeries venn = (NVennSeries)chart.Series.Add(SeriesType.Venn);
FiveSetVenn(venn);
FiveSetVennLabels(venn);
FiveSetVennInteractivity(venn);
// set a tooltip tool
nChartControl1.Controller.Selection.Add(chart);
nChartControl1.Controller.Tools.Add(new NTooltipTool());
// apply layout
ConfigureStandardLayout(chart, title, null);
}
void FourSetVennLabels(NVennSeries venn)
{
string centreLabel = "ABCD";
string[] s1 = new string[] { "A", "B", "C", "D" };
string[] s2 = new string[] { "AC", "CD", "BD", "AD", "AB", "BC" };
string[] s3 = new string[] { "ACD", "BCD", "ABD", "ABC" };
venn.ClearLabels();
venn.LabelsTextStyle.FontStyle = new NFontStyle("Verdana", 8);
// add centre label
venn.AddLabel(centreLabel, new NPointF(0, -8));
// add layer 1 labels
venn.AddLabel(s1[0], new NPointF(-12.5f - 15f, -10f + 10f));
venn.AddLabel(s1[1], new NPointF(12.5f + 15f, -10f + 10f));
venn.AddLabel(s1[2], new NPointF(-2.5f - 15f, 5f + 16f));
venn.AddLabel(s1[3], new NPointF(2.5f + 15f, 5f + 16f));
// add layer 2 labels
venn.AddLabel(s2[0], new NPointF(-12.5f - 9f, -10f + 19f));
venn.AddLabel(s2[1], new NPointF(0, -10f + 24f));
venn.AddLabel(s2[2], new NPointF(12.5f + 9f, -10f + 19f));
venn.AddLabel(s2[3], new NPointF(2.5f - 18f, 5f - 18f));
venn.AddLabel(s2[4], new NPointF(0, -10f - 16f));
venn.AddLabel(s2[5], new NPointF(-2.5f + 18f, 5f - 18f));
// add layer 3 labels
venn.AddLabel(s3[0], new NPointF(-12.5f + 1f, -10f + 10f));
venn.AddLabel(s3[1], new NPointF(12.5f - 1f, -10f + 10f));
venn.AddLabel(s3[2], new NPointF(2.5f - 10f, 5f - 21.5f));
venn.AddLabel(s3[3], new NPointF(-2.5f + 10f, 5f - 21.5f));
}
void FiveSetVennLabels(NVennSeries venn)
{
const int nCount = 5;
string[] s1 = new string[] { "A", "B", "C", "D", "E" };
string[] s2 = new string[] { "AC", "BD", "CE", "DA", "EB" };
string[] s3 = new string[] { "ABCD", "BCDE", "CDEA", "DEAB", "EABC" };
venn.ClearLabels();
venn.LabelsTextStyle.FontStyle = new NFontStyle("Verdana", 8);
// add the center label
venn.AddLabel("ABCDE", new NPointF(0, 0));
// add layer 1 labels, angle is in radians
NPointF[] points = CalculateLabelPositions(nCount, 35, -1.1f);
for (int i = 0; i < nCount; i++)
{
venn.AddLabel(s1[i], points[i]);
}
// add layer 2 labels, angle is in radians
points = CalculateLabelPositions(nCount, 25, -1.3f);
for (int i = 0; i < nCount; i++)
{
venn.AddLabel(s2[i], points[i]);
}
// add layer 4 labels, angle is in radians
points = CalculateLabelPositions(nCount, 17.5f, -0.5f);
for (int i = 0; i < nCount; i++)
{
venn.AddLabel(s3[i], points[i]);
}
}
protected void Page_Load(object sender, EventArgs e)
{
nChartControl1.BackgroundStyle.FrameStyle.Visible = false;
// set a chart title
NLabel title = nChartControl1.Labels.AddHeader("Four Set Venn");
title.TextStyle.FontStyle = new NFontStyle("Times New Roman", 14, FontStyle.Italic);
title.TextStyle.ShadowStyle.Type = ShadowType.LinearBlur;
// no legend
nChartControl1.Legends.Clear();
NVennChart chart = new NVennChart();
nChartControl1.Charts.Clear();
nChartControl1.Charts.Add(chart);
NVennSeries venn = (NVennSeries)chart.Series.Add(SeriesType.Venn);
FourSetVenn(venn);
FourSetVennLabels(venn);
// apply layout
ApplyLayoutTemplate(0, nChartControl1, chart, title, null);
}
void TwoSetVenn(NVennSeries venn)
{
venn.ClearContours();
venn.AddVennContour(VennShape.Ellipse, new NPointF(-15, 0), new NSizeF(50, 50), 0, 0);
venn.AddVennContour(VennShape.Ellipse, new NPointF(15, 0), new NSizeF(50, 50), 0, 1);
}
void TwoSetVennInteractivity(NVennSeries venn)
{
int[] arrContourIds;
NInteractivityStyle interactivity;
// set the default tooltip
venn.InteractivityStyle.Tooltip.Text = "Venn Diagram";
venn.InteractivityStyle.Cursor.Type = CursorType.No;
// clear previous interactivity objects
venn.ClearSegmentInteractivityStyles();
// Set tooltips and cursors for particular segments
arrContourIds = new int[] { 0 };
interactivity = new NInteractivityStyle();
interactivity.Tooltip.Text = "Segment A";
venn.SetInteractivityForSegment(arrContourIds, interactivity);
arrContourIds = new int[] { 1 };
interactivity = new NInteractivityStyle();
interactivity.Tooltip.Text = "Segment B";
venn.SetInteractivityForSegment(arrContourIds, interactivity);
arrContourIds = new int[] { 0, 1 };
interactivity = new NInteractivityStyle();
interactivity.Tooltip.Text = "Segment AB";
venn.SetInteractivityForSegment(arrContourIds, interactivity);
}
void ThreeSetVennLabels(NVennSeries venn)
{
string[] s1 = new string[] { "A", "B", "C" };
string[] s2 = new string[] { "BC", "AC", "AB" };
venn.ClearLabels();
venn.LabelsTextStyle.FontStyle = new NFontStyle("Verdana", 8);
// add the center label
venn.AddLabel("ABC", new NPointF(0, 0));
// add outer labels
NPointF[] points = CalculateLabelPositions(3, 30, (float)(-Math.PI / 2));
for (int i = 0; i < 3; i++)
{
venn.AddLabel(s1[i], points[i]);
}
// add middle labels
points = CalculateLabelPositions(3, 17, (float)Math.PI / 2);
for (int i = 0; i < 3; i++)
{
venn.AddLabel(s2[i], points[i]);
}
}
void FourSetVenn(NVennSeries venn)
{
venn.ClearContours();
venn.AddVennContour(VennShape.Ellipse, new NPointF(-12.5f, -10f), new NSizeF(60, 35), 135, 0);
venn.AddVennContour(VennShape.Ellipse, new NPointF(12.5f, -10f), new NSizeF(60, 35), 45, 1);
venn.AddVennContour(VennShape.Ellipse, new NPointF(-2.5f, 5), new NSizeF(60, 35), 135, 2);
venn.AddVennContour(VennShape.Ellipse, new NPointF(2.5f, 5), new NSizeF(60, 35), 45, 3);
}
void TwoSetVennLabels(NVennSeries venn)
{
string[] s1 = new string[] { "A", "AB", "B" };
venn.ClearLabels();
venn.LabelsTextStyle.FontStyle = new NFontStyle("Verdana", 8);
// add labels
venn.AddLabel(s1[0], new NPointF(-25, 0));
venn.AddLabel(s1[1], new NPointF(0, 0));
venn.AddLabel(s1[2], new NPointF(25, 0));
}
void ThreeSetVenn(NVennSeries venn)
{
const int nSetCount = 3;
const float fStartAngle = -((float)Math.PI / 2);
const float fScale = 14;
const float fCenterX = 0;
const float fCenterY = 0;
float fIncrementAngle = (float)(2 * Math.PI / nSetCount);
venn.ClearContours();
for (int i = 0; i < nSetCount; i++)
{
float fAngle = fStartAngle + i * fIncrementAngle;
float x = (float)Math.Round(fCenterX + Math.Cos(fAngle) * fScale, 1);
float y = (float)Math.Round(fCenterY + Math.Sin(fAngle) * fScale, 1);
venn.AddVennContour(VennShape.Ellipse, new NPointF(x, y), new NSizeF(50, 50), 0, i);
}
}
