Method SetScaleY

gui/chart.go:206–233

SetScaleY sets the Y scale number of lines and color

(lines int, color *math32.Color)

// SetScaleY sets the Y scale number of lines and color
func (ch *Chart) SetScaleY(lines int, color *math32.Color) {

	if ch.scaleY != nil {
		ch.ClearScaleY()
	}

	if lines < 2 {
		lines = 2
	}

	// Add scale lines
	ch.scaleY = newChartScaleY(ch, lines, color)
	ch.Add(ch.scaleY)

	// Add scale labels
	// The position of the labels will be set by 'recalc()'
	value := ch.minY
	step := (ch.maxY - ch.minY) / float32(lines-1)
	for i := 0; i < lines; i++ {
		l := NewLabel(fmt.Sprintf(ch.formatY, value))
		l.SetColor4(math32.NewColor4("black"))
		l.SetFontSize(ch.fontSizeY)
		ch.Add(l)
		ch.labelsY = append(ch.labelsY, l)
		value += step
	}
	ch.recalc()
}

// ClearScaleY removes the Y scale if it was previously set
func (ch *Chart) ClearScaleY() {