zeni/go-chart
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can just supply inverted ranges.

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This commit is contained in:
Will Charczuk 2017-01-09 17:57:45 -08:00
parent 21986dbce7
commit 78cbfa62bc
7 changed files with 66 additions and 29 deletions
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11
tick.go
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@ -49,17 +49,18 @@ func GenerateContinuousTicks(r Renderer, ra Range, isVertical bool, style Style,
style.GetTextOptions().WriteToRenderer(r)
labelBox := r.MeasureText(minLabel)
var tickSize int
var tickSize float64
if isVertical {
tickSize = labelBox.Height() + DefaultMinimumTickVerticalSpacing
tickSize = float64(labelBox.Height() + DefaultMinimumTickVerticalSpacing)
} else {
tickSize = labelBox.Width() + DefaultMinimumTickHorizontalSpacing
tickSize = float64(labelBox.Width() + DefaultMinimumTickHorizontalSpacing)
}
domainRemainder := (ra.GetDomain()) - (tickSize * 2)
domain := float64(ra.GetDomain())
domainRemainder := domain - (tickSize * 2)
intermediateTickCount := int(math.Floor(float64(domainRemainder) / float64(tickSize)))
rangeDelta := max - min
rangeDelta := math.Abs(max - min)
tickStep := rangeDelta / float64(intermediateTickCount)
roundTo := Math.GetRoundToForDelta(rangeDelta) / 10