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feat: support bar chart

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This commit is contained in:
vicanso 2022-02-01 11:19:31 +08:00
parent 3a9897f9ad
commit 6ae7e1d1b3
5 changed files with 112 additions and 8 deletions
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10
range.go
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@ -60,10 +60,20 @@ func NewRange(min, max float64, divideCount int) Range {
}
func (r *Range) getHeight(value float64) int {
v := (value - r.Min) / (r.Max - r.Min)
return int(v * float64(r.Size))
}
func (r *Range) getRestHeight(value float64) int {
v := 1 - (value-r.Min)/(r.Max-r.Min)
return int(v * float64(r.Size))
}
func (r *Range) GetRange(index int) (float64, float64) {
unit := float64(r.Size) / float64(r.divideCount)
return unit * float64(index), unit * float64(index+1)
}
func (r *Range) getWidth(value float64) int {
v := value / (r.Max - r.Min)
// 移至居中