piechart

type PieChart struct {
	plotter.Values

	// Radius is the radius of the pie with respect to
	// the chart size. If 0, the pie is a simple dot, if 1, it fills the chart
	// (given that the axes range from -1 to 1).
	// Default: 0.8
	Radius float64

	// Color is the fill color of the pie slices.
	Color color.Color

	// LineStyle is the style of the outline of the pie slices.
	// In particular, LineStyle.Width may be set to change the spacing
	// between slices (defaults to vg.Length(2)).
	draw.LineStyle

	Offset struct {
		// Value is the value added to the position of each slice in the pie,
		// as if there was an invisible slice with value Value before.
		// When this Value offset is zero (default), the slices are drawn one after
		// the other, counter-clockwise, starting from the right side.
		Value float64

		// X is the length added to the X position of the pie.
		// When the X offset is zero, the pie is centered horizontally.
		X vg.Length

		// Y is the length added to the Y position the pie.
		// When the Y offset is zero, the pie is centered vertically.
		Y vg.Length
	}

	// Total is the total of values required to fill the pie, it defaults to
	// the sum of all Values.
	// If changed to be greater than this sum, the slices will not fill the pie.
	// If less, it will be reset to the default and fill the pie (slices
	// can not overlay each other).
	Total float64

	Labels struct {
		// Show (default: true) is used to determine whether labels should be
		// displayed in each slice of the pie chart
		Show bool

		// Position is the location of the label:
		// 0 is for the center of the pie;
		// 1 is for the side of the slice.
		// A value greater than 1 is outside of the pie (default: 0.8)
		Position float64

		// TextStyle is the style of the slices label text.
		draw.TextStyle

		// Nominal can be used to override the displayed labels (if not used,
		// regular indexes are displayed).
		// Useful in particular in combination with Offset.Value, to offset
		// manually the displayed indexes.
		Nominal []string

		Values struct {
			// Show (default: false) sets whether values should be displayed
			// along with indexes.
			Show bool

			// Percentage (default: false) is to display the percent value
			// of each slice instead of the real value.
			// The percentage is computed with respect to the given Total
			// value (if any).
			Percentage bool
		}
	}
	// contains filtered or unexported fields
}