zeni/go-chart
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inching up coverage.

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This commit is contained in:
Will Charczuk 2016-07-10 23:06:14 -07:00
parent 18a6e3eed1
commit 56da554741
10 changed files with 315 additions and 92 deletions
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29
xaxis.go
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@ -37,7 +37,13 @@ func (xa XAxis) GetTicks(r Renderer, ra Range, vf ValueFormatter) []Tick {
func (xa XAxis) generateTicks(r Renderer, ra Range, vf ValueFormatter) []Tick {
step := xa.getTickStep(r, ra, vf)
return xa.generateTicksWithStep(ra, step, vf)
return GenerateTicksWithStep(ra, step, vf)
}
func (xa XAxis) getTickStep(r Renderer, ra Range, vf ValueFormatter) float64 {
tickCount := xa.getTickCount(r, ra, vf)
step := ra.Delta() / float64(tickCount)
return step
}
func (xa XAxis) getTickCount(r Renderer, ra Range, vf ValueFormatter) int {
@ -58,27 +64,6 @@ func (xa XAxis) getTickCount(r Renderer, ra Range, vf ValueFormatter) int {
return count
}
func (xa XAxis) getTickStep(r Renderer, ra Range, vf ValueFormatter) float64 {
tickCount := xa.getTickCount(r, ra, vf)
step := ra.Delta() / float64(tickCount)
return step
}
func (xa XAxis) generateTicksWithStep(ra Range, step float64, vf ValueFormatter) []Tick {
var ticks []Tick
for cursor := ra.Min; cursor < ra.Max; cursor += step {
ticks = append(ticks, Tick{
Value: cursor,
Label: vf(cursor),
})
if len(ticks) == 20 {
return ticks
}
}
return ticks
}
// Render renders the axis
func (xa XAxis) Render(r Renderer, canvasBox Box, ra Range, ticks []Tick) {
tickFontSize := xa.Style.GetFontSize(DefaultFontSize)