47 lines
1.5 KiB
Go
47 lines
1.5 KiB
Go
package chart
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import "github.com/wcharczuk/go-chart/drawing"
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// ValuesProvider is a type that produces values.
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type ValuesProvider interface {
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Len() int
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GetValues(index int) (float64, float64)
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}
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// BoundedValuesProvider allows series to return a range.
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type BoundedValuesProvider interface {
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Len() int
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GetBoundedValues(index int) (x, y1, y2 float64)
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}
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// LastValuesProvider is a special type of value provider that can return it's (potentially computed) last value.
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type LastValuesProvider interface {
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GetLastValues() (x, y float64)
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}
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// BoundedLastValuesProvider is a special type of value provider that can return it's (potentially computed) bounded last value.
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type BoundedLastValuesProvider interface {
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GetBoundedLastValues() (x, y1, y2 float64)
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}
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// FullValuesProvider is an interface that combines `ValuesProvider` and `LastValuesProvider`
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type FullValuesProvider interface {
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ValuesProvider
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LastValuesProvider
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}
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// FullBoundedValuesProvider is an interface that combines `BoundedValuesProvider` and `BoundedLastValuesProvider`
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type FullBoundedValuesProvider interface {
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BoundedValuesProvider
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BoundedLastValuesProvider
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}
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// SizeProvider is a provider for integer size.
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type SizeProvider func(xrange, yrange Range, index int, x, y float64) float64
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// ColorProvider is a general provider for color ranges based on values.
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type ColorProvider func(v, vmin, vmax float64) drawing.Color
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// DotColorProvider is a provider for dot color.
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type DotColorProvider func(xrange, yrange Range, index int, x, y float64) drawing.Color
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