47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
package chart
|
|
|
|
import "github.com/wcharczuk/go-chart/drawing"
|
|
|
|
// ValueProvider is a type that produces values.
|
|
type ValueProvider interface {
|
|
Len() int
|
|
GetValue(index int) (float64, float64)
|
|
}
|
|
|
|
// BoundedValueProvider allows series to return a range.
|
|
type BoundedValueProvider interface {
|
|
Len() int
|
|
GetBoundedValue(index int) (x, y1, y2 float64)
|
|
}
|
|
|
|
// LastValueProvider is a special type of value provider that can return it's (potentially computed) last value.
|
|
type LastValueProvider interface {
|
|
GetLastValue() (x, y float64)
|
|
}
|
|
|
|
// BoundedLastValueProvider is a special type of value provider that can return it's (potentially computed) bounded last value.
|
|
type BoundedLastValueProvider interface {
|
|
GetBoundedLastValue() (x, y1, y2 float64)
|
|
}
|
|
|
|
// FullValueProvider is an interface that combines `ValueProvider` and `LastValueProvider`
|
|
type FullValueProvider interface {
|
|
ValueProvider
|
|
LastValueProvider
|
|
}
|
|
|
|
// FullBoundedValueProvider is an interface that combines `BoundedValueProvider` and `BoundedLastValueProvider`
|
|
type FullBoundedValueProvider interface {
|
|
BoundedValueProvider
|
|
BoundedLastValueProvider
|
|
}
|
|
|
|
// SizeProvider is a provider for integer size.
|
|
type SizeProvider func(xrange, yrange Range, index int, x, y float64) float64
|
|
|
|
// ColorProvider is a general provider for color ranges based on values.
|
|
type ColorProvider func(v, vmin, vmax float64) drawing.Color
|
|
|
|
// DotColorProvider is a provider for dot color.
|
|
type DotColorProvider func(xrange, yrange Range, index int, x, y float64) drawing.Color
|