private void _draw3DPies(
Canvas pieContainer,
double quadWidth,
double quadHeight,
int iGroup)
{
ChartModel model = Model;
double[,] yValues = model.YValues;
string[] groupLabels = model.GroupLabels;
Color[] seriesColors = model.SeriesColors;
var pieSize = Math.Min(quadWidth / 2, quadHeight / 2);
if (iGroup == -1)
{
iGroup = 0;
}
int nPies = yValues.GetUpperBound(1) + 1;
double pieTotal = 0;
for (int i = 0; i < nPies; ++i)
{
pieTotal += yValues[iGroup, i];
}
string pathXAML = CurrentLookAndFeel.GetPiePathXAML();
Path pathElem;
double pieStart = 0;
List <UIElement> dataElems = null;
bool animate = (AnimationDuration > 0);
if (animate)
{
dataElems = DataElements;
}
double perspectiveHeight = pieSize / 4;
Path[] pieElems = new Path[nPies],
ringElems = new Path[nPies],
edgeElems = new Path[nPies];
if (perspectiveHeight > _MAX_PERSPECTIVE_HEIGHT)
{
perspectiveHeight = _MAX_PERSPECTIVE_HEIGHT;
}
string gradientXAML = CurrentLookAndFeel.GetElementGradientXAML();
TranslateTransform defaultTransform;
for (int i = 0; i < nPies; ++i)
{
double valueRatio = 1 - (yValues[iGroup, i]) / (pieTotal);
double arcBeginX, arcBeginY, arcEndX, arcEndY;
arcBeginX = pieSize * Math.Cos(pieStart * Math.PI * 2);
arcBeginY = pieSize * Math.Sin(pieStart * Math.PI * 2);
StringBuilder sb = new StringBuilder();
sb.Append("M0,0L").Append(arcBeginX).Append(",").Append(arcBeginY);
arcEndX = pieSize * Math.Cos((pieStart + valueRatio) * Math.PI * 2);
arcEndY = pieSize * Math.Sin((pieStart + valueRatio) * Math.PI * 2);
if (valueRatio >= .5)
{
sb.Append(" A").Append(pieSize).Append(",").Append(pieSize).Append(" 1 0 0 ");
}
else
{
sb.Append(" A").Append(pieSize).Append(",").Append(pieSize).Append(" 1 1 0 ");
}
sb.Append(arcEndX).Append(",").Append(arcEndY);
sb.Append(" z");
pathElem = CreatePathFromXAMLAndData(pathXAML, sb);
if (animate)
{
dataElems.Add(pathElem);
defaultTransform = new TranslateTransform();
defaultTransform.X = defaultTransform.Y = -10000;
pathElem.SetValue(Canvas.RenderTransformProperty, defaultTransform);
_pieAnimAngles.Add(pieStart + valueRatio / 2);
}
if (gradientXAML != null)
{
SetGradientOnElement(pathElem, gradientXAML, seriesColors[i], 0xe5);
}
else
{
SetFillOnElement(pathElem, seriesColors[i]);
}
pathElem.SetValue(Rectangle.StrokeProperty, new SolidColorBrush(seriesColors[i]));
// centroid of the pie triangle
Point centroid = new Point((arcBeginX + arcEndX) / 3, (arcBeginY + arcEndY) / 3);
SetExpandosOnElement(pathElem, iGroup, i, centroid);
if (DisplayToolTip)
{
pathElem.MouseEnter += new MouseEventHandler(ShowToolTip);
pathElem.MouseLeave += new MouseEventHandler(HideToolTip);
}
pathElem.MouseLeftButtonUp += new MouseButtonEventHandler(ChartDataClicked);
sb = new StringBuilder();
sb.Append("M").Append(arcBeginX).Append(",").Append(arcBeginY);
if (valueRatio >= .5) // major arc
{
sb.Append(" A").Append(pieSize).Append(",").Append(pieSize).Append(" 1 0 0 ");
}
else
{
sb.Append(" A").Append(pieSize).Append(" ").Append(pieSize).Append(" 1 1 0 ");
}
sb.Append(arcEndX).Append(",").Append(arcEndY);
sb.Append(" v").Append(perspectiveHeight);
sb.Append(" M").Append(arcEndX).Append(",").Append(arcEndY + perspectiveHeight);
if (valueRatio >= .5) // major arc
{
sb.Append(" A").Append(pieSize).Append(",").Append(pieSize).Append(" 1 0 1 ");
}
else
{
sb.Append(" A").Append(pieSize).Append(",").Append(pieSize).Append(" 1 1 1 ");
}
sb.Append(arcBeginX).Append(",").Append(arcBeginY + perspectiveHeight);
sb.Append(" v").Append(-perspectiveHeight);
Path pathRingElem = CreatePathFromXAMLAndData(pathXAML, sb);
if (gradientXAML != null)
{
SetGradientOnElement(pathRingElem, gradientXAML, seriesColors[i], 0xe5);
}
else
{
SetFillOnElement(pathRingElem, seriesColors[i]);
}
pathRingElem.SetValue(Rectangle.StrokeProperty, new SolidColorBrush(seriesColors[i]));
sb = new StringBuilder();
sb.Append("M0,0L");
sb.Append(arcBeginX).Append(",").Append(arcBeginY);
sb.Append("v").Append(perspectiveHeight);
sb.Append("L").Append(0).Append(",").Append(perspectiveHeight);
sb.Append("z");
sb.Append("M0,0L");
sb.Append(arcEndX).Append(",").Append(arcEndY);
sb.Append("v").Append(perspectiveHeight);
sb.Append("L").Append(0).Append(",").Append(perspectiveHeight);
sb.Append("z");
Path pathEdgeElem = CreatePathFromXAMLAndData(pathXAML, sb);
if (animate)
{
dataElems.Add(pathRingElem);
defaultTransform = new TranslateTransform();
defaultTransform.X = defaultTransform.Y = -10000;
pathRingElem.SetValue(Canvas.RenderTransformProperty, defaultTransform);
dataElems.Add(pathEdgeElem);
defaultTransform = new TranslateTransform();
defaultTransform.X = defaultTransform.Y = -10000;
pathEdgeElem.SetValue(Canvas.RenderTransformProperty, defaultTransform);
}
(pathEdgeElem.Data as PathGeometry).FillRule = FillRule.Nonzero;
if (gradientXAML != null)
{
SetGradientOnElement(pathEdgeElem, gradientXAML, seriesColors[i], 0xe5);
}
else
{
SetFillOnElement(pathEdgeElem, seriesColors[i]);
}
pathEdgeElem.SetValue(Rectangle.StrokeProperty, new SolidColorBrush(seriesColors[i]));
if (DisplayToolTip)
{
pathRingElem.MouseEnter += new MouseEventHandler(ShowToolTip);
pathRingElem.MouseLeave += new MouseEventHandler(HideToolTip);
pathEdgeElem.MouseEnter += new MouseEventHandler(ShowToolTip);
pathEdgeElem.MouseLeave += new MouseEventHandler(HideToolTip);
}
SetExpandosOnElement(pathRingElem, iGroup, i, centroid);
SetExpandosOnElement(pathEdgeElem, iGroup, i, centroid);
pieStart += valueRatio;
pieElems[i] = pathElem;
ringElems[i] = pathRingElem;
edgeElems[i] = pathEdgeElem;
}
UIElementCollection children = pieContainer.Children;
// For the top half, edges have preference over rings
double totalRatio = 0;
for (int i = 0; i < nPies; ++i)
{
if (totalRatio <= .5)
{
children.Add(ringElems[i]);
}
totalRatio += (yValues[iGroup, i]) / (pieTotal);
}
totalRatio = 0;
for (int i = 0; i < nPies; ++i)
{
if (totalRatio <= .5)
{
children.Add(edgeElems[i]);
}
totalRatio += (yValues[iGroup, i]) / (pieTotal);
}
// For the bottom half, rings have preference over edges
totalRatio = 0;
for (int i = 0; i < nPies; ++i)
{
if (totalRatio > .5)
{
children.Add(edgeElems[i]);
}
totalRatio += (yValues[iGroup, i]) / (pieTotal);
}
totalRatio = 0;
for (int i = 0; i < nPies; ++i)
{
if (totalRatio > .5)
{
children.Add(ringElems[i]);
}
totalRatio += (yValues[iGroup, i]) / (pieTotal);
}
for (int i = 0; i < nPies; ++i)
{
children.Add(pieElems[i]);
}
}
private void _drawPies(
Canvas pieContainer,
double quadWidth,
double quadHeight,
int iGroup)
{
ChartModel model = Model;
double[,] yValues = model.YValues;
string [] groupLabels = model.GroupLabels;
Color[] seriesColors = model.SeriesColors;
var pieSize = Math.Min(quadWidth / 2, quadHeight / 2);
if (iGroup == -1)
{
iGroup = 0;
}
double nPies = yValues.GetUpperBound(1) + 1;
double pieTotal = 0;
for (int i = 0; i < nPies; ++i)
{
pieTotal += yValues[iGroup, i];
}
string pathXAML = CurrentLookAndFeel.GetPiePathXAML();
Path pathElem;
double pieStart = 0, animAngleStart = 0;
List <UIElement> dataElems = null;
bool animate = (AnimationDuration > 0);
if (animate)
{
dataElems = DataElements;
}
string gradientXAML = CurrentLookAndFeel.GetElementGradientXAML();
TranslateTransform defaultTransform;
for (int i = 0; i < nPies; ++i)
{
double valueRatio = 1 - (yValues[iGroup, i]) / (pieTotal);
double x1 = pieSize * Math.Cos(pieStart * Math.PI * 2),
y1 = pieSize * Math.Sin(pieStart * Math.PI * 2);
StringBuilder sb = new StringBuilder();
sb.Append("M0,0 L");
sb.Append(x1);
sb.Append(",").Append(y1);
double x2 = pieSize * Math.Cos((pieStart + valueRatio) * Math.PI * 2),
y2 = pieSize * Math.Sin((pieStart + valueRatio) * Math.PI * 2);
if (valueRatio >= .5) // major arc
{
sb.Append(" A").Append(pieSize).Append(" ").Append(pieSize).Append(" 1 0 0 ");
}
else
{
sb.Append(" A").Append(pieSize).Append(" ").Append(pieSize).Append(" 1 1 0 ");
}
sb.Append(x2);
sb.Append(",").Append(y2);
sb.Append(" z");
pathElem = CreatePathFromXAMLAndData(pathXAML, sb);
if (animate)
{
dataElems.Add(pathElem);
defaultTransform = new TranslateTransform();
defaultTransform.X = defaultTransform.Y = -10000;
pathElem.SetValue(Canvas.RenderTransformProperty, defaultTransform);
double curAnimRatio = (yValues[iGroup, i]) / (pieTotal);
_pieAnimAngles.Add(animAngleStart + curAnimRatio / 2);
animAngleStart += curAnimRatio;
}
if (gradientXAML != null)
{
SetGradientOnElement(pathElem, gradientXAML, seriesColors[i], 0xe5);
}
else
{
SetFillOnElement(pathElem, seriesColors[i]);
}
pathElem.SetValue(Rectangle.StrokeProperty, new SolidColorBrush(seriesColors[i]));
// centroid of the triangle used for tooltips
Point centroid = new Point((x1 + x2) / 3, (y1 + y2) / 3);
SetExpandosOnElement(pathElem, iGroup, i, centroid);
if (DisplayToolTip)
{
pathElem.MouseEnter += new MouseEventHandler(ShowToolTip);
pathElem.MouseLeave += new MouseEventHandler(HideToolTip);
}
pathElem.MouseLeftButtonUp += new MouseButtonEventHandler(ChartDataClicked);
pieStart += valueRatio;
pieContainer.Children.Add(pathElem);
}
/*for (var i = 0; i< nPies; ++i)
* {
* // calculate the pie gradient:
* pieContainer.appendChild(pieElems[i]);
* }*/
}