59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
package elements
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import "tomo"
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// Numeric is a type constraint representing a number.
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type Numeric interface {
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~float32 | ~float64 |
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~int | ~int8 | ~int16 | ~int32 | ~int64 |
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~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr
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}
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// LerpSlider is a slider that has a minimum and maximum value, and who's value
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// can be any numeric type.
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type LerpSlider[T Numeric] struct {
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slider
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min T
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max T
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}
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// NewVLerpSlider creates a new horizontal LerpSlider with a minimum and maximum
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// value.
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func NewVLerpSlider[T Numeric] (min, max T, value T) (element *LerpSlider[T]) {
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element = NewHLerpSlider(min, max, value)
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element.vertical = true
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return
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}
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// NewHLerpSlider creates a new horizontal LerpSlider with a minimum and maximum
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// value.
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func NewHLerpSlider[T Numeric] (min, max T, value T) (element *LerpSlider[T]) {
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if min > max { min, max = max, min }
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element = &LerpSlider[T] {
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min: min,
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max: max,
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}
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element.entity = tomo.GetBackend().NewEntity(element)
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element.construct()
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element.SetValue(value)
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return
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}
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// SetValue sets the slider's value.
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func (element *LerpSlider[T]) SetValue (value T) {
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value -= element.min
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element.slider.SetValue(float64(value) / float64(element.Range()))
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}
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// Value returns the slider's value.
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func (element *LerpSlider[T]) Value () (value T) {
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return T (
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float64(element.slider.Value()) * float64(element.Range())) +
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element.min
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}
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// Range returns the difference between the slider's maximum and minimum values.
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func (element *LerpSlider[T]) Range () T {
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return element.max - element.min
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}
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