public static IEnumerable Circle(this IEnumerable data,
int count,
float radius,
bool radialFire = true,
Func<FireData, bool> filter = null) {
return data.Circle(fireData => count, fireData => radius, radialFire, filter);
}
public static IEnumerable<Vector3> Circle(this Vector3 v, float Radius, int Sectors)
{
return v.Circle(Radius, Sectors, 0);
}
public static void DrawPieChart(this PdfContentByte canvas,
PieChart chart,
float x0,
float y0,
float r = 50f,
Font font = null,
bool showCaption = true)
{
if (chart.Values.Length != chart.Captions.Length) {
return;
}
if (font == null) {
font = FontFactory.GetFont(FontFactory.TIMES, 8);
}
canvas.SetLineWidth(0f);
double _x1, _y1, _x2, _y2;
float x1, y1, x2, y2;
canvas.SetLineWidth(1f);
float cRadius = (float)(r + 0.5);
canvas.Circle(x0, y0, cRadius);
canvas.SetColorStroke(BaseColor.GRAY);
canvas.Stroke();
canvas.SetLineWidth(0f);
float rectX1 = x0 - r;
float rectY1 = y0 - r;
float xPoint = x0 + r;
float yPoint = y0 + r;
//canvas.Rectangle(rectX1, rectY1, 2 * r, 2 * r);
//canvas.Stroke();
double _startAngle = 0;
double _endAngle = 0;
float startAngle = 0;
float endAngle = 0;
float captionY = y0 + (chart.Values.Length - 1) * 6;
double _percentage;
string percentage;
for (int counter = 0; counter < chart.Values.Length; counter++) {
if (chart.TotalValues > 0)
_percentage = chart.Angles[counter] * 100 / 360;
else
_percentage = 0;
if (showCaption) {
//captions from here
canvas.SetColorStroke(chart.ChartColors[counter]);
canvas.SetColorFill(chart.ChartColors[counter]);
canvas.Rectangle(x0 + r + 10, captionY, 7, 7);
canvas.ClosePathFillStroke();
percentage = string.Format("{0:N}", _percentage);
ColumnText text2 = new ColumnText(canvas);
Phrase phrase = new Phrase(string.Format("{0} ({1}%)", chart.Captions[counter], percentage), font);
text2.SetSimpleColumn(phrase, x0 + r + 20, captionY, x0 + r + 200, captionY, 0f, 0);
text2.Go();
captionY -= 12;
if (_percentage == 0) {
continue;
}
//end of caption
}
if (chart.TotalValues <= 0)
continue;
if (_percentage <= 50) {
//get coordinate on circle
_x1 = x0 + r * Math.Cos(_startAngle * Math.PI / 180);
_y1 = y0 + r * Math.Sin(_startAngle * Math.PI / 180);
x1 = (float)_x1;
y1 = (float)_y1;
_endAngle += chart.Angles[counter];
_x2 = x0 + r * Math.Cos(_endAngle * Math.PI / 180);
_y2 = y0 + r * Math.Sin(_endAngle * Math.PI / 180);
x2 = (float)_x2;
y2 = (float)_y2;
startAngle = (float)_startAngle;
endAngle = (float)_endAngle;
//set the colors to be used
canvas.SetColorStroke(chart.ChartColors[counter]);
canvas.SetColorFill(chart.ChartColors[counter]);
//draw the triangle within the circle
canvas.MoveTo(x0, y0);
canvas.LineTo(x1, y1);
canvas.LineTo(x2, y2);
canvas.LineTo(x0, y0);
canvas.ClosePathFillStroke();
//draw the arc
canvas.Arc(rectX1, rectY1, xPoint, yPoint, startAngle, (float)chart.Angles[counter]);
canvas.ClosePathFillStroke();
_startAngle += chart.Angles[counter];
}
else {
//DO THE FIRST PART
//get coordinate on circle
_x1 = x0 + r * Math.Cos(_startAngle * Math.PI / 180);
_y1 = y0 + r * Math.Sin(_startAngle * Math.PI / 180);
x1 = (float)_x1;
y1 = (float)_y1;
_endAngle += 180;
_x2 = x0 + r * Math.Cos(_endAngle * Math.PI / 180);
_y2 = y0 + r * Math.Sin(_endAngle * Math.PI / 180);
x2 = (float)_x2;
y2 = (float)_y2;
startAngle = (float)_startAngle;
endAngle = (float)_endAngle;
//set the colors to be used
canvas.SetColorStroke(chart.ChartColors[counter]);
canvas.SetColorFill(chart.ChartColors[counter]);
//draw the triangle within the circle
canvas.MoveTo(x0, y0);
canvas.LineTo(x1, y1);
canvas.LineTo(x2, y2);
canvas.LineTo(x0, y0);
canvas.ClosePathFillStroke();
//draw the arc
canvas.Arc(rectX1, rectY1, xPoint, yPoint, startAngle, 180);
canvas.ClosePathFillStroke();
//DO THE SECOND PART
//get coordinate on circle
_x1 = x0 + r * Math.Cos((_startAngle + 180) * Math.PI / 180);
_y1 = y0 + r * Math.Sin((_startAngle + 180) * Math.PI / 180);
x1 = (float)_x1;
y1 = (float)_y1;
_endAngle += chart.Angles[counter] - 180;
_x2 = x0 + r * Math.Cos(_endAngle * Math.PI / 180);
_y2 = y0 + r * Math.Sin(_endAngle * Math.PI / 180);
x2 = (float)_x2;
y2 = (float)_y2;
startAngle = (float)_startAngle;
endAngle = (float)_endAngle;
//set the colors to be used
canvas.SetColorStroke(chart.ChartColors[counter]);
canvas.SetColorFill(chart.ChartColors[counter]);
//draw the triangle within the circle
canvas.MoveTo(x0, y0);
canvas.LineTo(x1, y1);
canvas.LineTo(x2, y2);
canvas.LineTo(x0, y0);
canvas.ClosePathFillStroke();
//draw the arc
canvas.Arc(rectX1, rectY1, xPoint, yPoint, startAngle + 180, (float)(chart.Angles[counter] - 180));
canvas.ClosePathFillStroke();
_startAngle += chart.Angles[counter];
}
}
}
