ease

package
v0.0.0-...-20810c9 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Mar 21, 2024 License: MIT Imports: 8 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

View Source 
var (
	Modifiers = id.NewDenseKeyMap[Modifier, uint16, uint8]()

	In = NewModifier("in", func(easing Fn) Fn {
		return easing
	})
	Out = NewModifier("out", func(easing Fn) Fn {
		return func(x float32) float32 {
			return 1 - easing(1-x)
		}
	})
	InOut = NewModifier("inout", func(easing Fn) Fn {
		return func(x float32) float32 {
			if x < 0.5 {
				return easing(2.0*x) * 0.5
			} else {
				return 1.0 - (easing(2.0-2.0*x) * 0.5)
			}
		}
	})
	YoYo = NewModifier("yoyo", func(easing Fn) Fn {
		return func(x float32) float32 {
			if x < 0.5 {
				return easing(2.0 * x)
			} else {
				return easing(2.0 - 2.0*x)
			}
		}
	})
	Mirror = NewModifier("mirror", func(easing Fn) Fn {
		return func(x float32) float32 {
			if x < 0.5 {
				return easing(2.0 * x)
			} else {
				return 1.0 - easing(2.0-2.0*x)
			}
		}
	})
	Reverse = NewModifier("reverse", func(easing Fn) Fn {
		return func(x float32) float32 {
			return easing(1.0 - x)
		}
	})
	Flip = NewModifier("flip", func(easing Fn) Fn {
		return func(x float32) float32 {
			return 1.0 - easing(x)
		}
	})
)

Modifiers

View Source 
var (
	Easings = id.NewDenseKeyMap[Easing, uint16, uint8]()

	Linear = Name("linear", Fn(func(x float32) float32 {
		return x
	}))
	Quad = Name("quad", Fn(func(x float32) float32 {
		return x * x
	}))
	Ease = Name("ease", Fn(func(x float32) float32 {
		i := (1.0 - x)
		i2 := i * i
		x2 := x * x
		eq1 := (0.3 * i2 * x) + (3.0 * i * x2) + (x2 * x)
		eq2 := 1.0 - i2*i2

		return eq1*i + eq2*x
	}))
	Cubic = Name("cubic", Fn(func(x float32) float32 {
		return x * x * x
	}))
	Quartic = Name("quartic", Fn(func(x float32) float32 {
		x2 := x * x
		return x2 * x2
	}))
	Quintic = Name("quintic", Fn(func(x float32) float32 {
		x2 := x * x
		return x2 * x2 * x
	}))
	Back = Name("back", Fn(func(x float32) float32 {
		x2 := x * x
		x3 := x2 * x
		return x3 + x2 - x
	}))
	Sine = Name("sine", Fn(func(x float32) float32 {
		return core.Sin(x * 1.57079632679)
	}))
	Overshot = Name("overshot", Fn(func(x float32) float32 {
		return (1.0 - x*(7.0/10)) * x * (10.0 / 3.0)
	}))
	Elastic = Name("elastic", Fn(func(x float32) float32 {
		x2 := x * x
		x3 := x2 * x
		scale := x2 * ((2.0 * x3) + x2 - (4.0 * x) + 2.0)
		wave := -core.Sin(x * 10.9955742876)
		return scale * wave
	}))
	Revisit = Name("revisit", Fn(func(x float32) float32 {
		return core.Abs(x - core.Sin(x*3.14159265359))
	}))
	Lasso = Name("lasso", Fn(func(x float32) float32 {
		return (1.0 - core.Cos(x*x*x*36.0)*(1.0-x))
	}))
	SlowBounce = Name("slowbounce", Fn(func(x float32) float32 {
		x2 := x * x
		return (1.0 - core.Abs((1.0-x2)*core.Cos(x2*x*14.8044066016)))
	}))
	Bounce = Name("bounce", Fn(func(x float32) float32 {
		return (1.0 - core.Abs((1.0-x)*core.Cos(x*x*14.8044066016)))
	}))
	SmallBounce = Name("smallbounce", Fn(func(x float32) float32 {
		inv := 1.0 - x
		return (1.0 - core.Abs(inv*inv*core.Cos(x*x*14.8044066016)))
	}))
	TinyBounce = Name("tinybounce", Fn(func(x float32) float32 {
		inv := 1.0 - x
		return (1.0 - core.Abs(inv*inv*core.Cos(x*x*7.0)))
	}))
	Hesitant = Name("hesitant", Fn(func(x float32) float32 {
		return (core.Cos(x*x*12.0)*x*(1.0-x) + x)
	}))
	Sqrt = Name("sqrt", Fn(func(x float32) float32 {
		return core.Sqrt(x)
	}))
	Cos = Name("cos", Fn(func(x float32) float32 {
		return 0.5 - core.Cos(x*math.Pi)*0.5
	}))
	Sqrtf = Name("sqrtf", Fn(func(x float32) float32 {
		i := (1.0 - x)
		i2 := i * i
		return ((1.0 - i2*i2) + x) * 0.5
	}))
	Log10 = Name("log10", Fn(func(x float32) float32 {
		return (core.Log10(x+0.01) + 2.0) * 0.5 / 1.0021606868913213
	}))
	Slingshot = Name("slingshot", Fn(func(x float32) float32 {
		if x < 0.7 {
			return (x * -0.357)
		} else {
			d := x - 0.7
			return ((d*d*27.5 - 0.5) * 0.5)
		}
	}))
	Circular = Name("circular", Fn(func(x float32) float32 {
		return 1.0 - core.Sqrt(1-x*x)
	}))
	Gentle = Name("gentle", Fn(func(x float32) float32 {
		return (3.0 * (1.0 - x) * x * x) + (x * x * x)
	}))

	// CSS easing functions
	CssEase      = Name("cssease", Ease)
	CssEaseIn    = Name("csseasein", Quad)
	CssEaseOut   = Name("csseaseout", Out.Modify(Quad))
	CssEaseInOut = Name("csseaseinout", InOut.Modify(Quad))
	CssLinear    = Name("csslinear", Linear)
)

Easings

View Source 
var Regex = regexp.MustCompile(`^(?i)(bezier\(\s*(-?\d*\.?\d*)\s*,\s*(-?\d*\.?\d*)\s*,\s*(-?\d*\.?\d*)\s*,\s*(-?\d*\.?\d*)\s*\)|([^-]*))(|\s*-\s*([^*]+))(|\s*\*\s*(-?\d*\.?\d*))`)

Formats: easing easing-modifier easing*scale easing-modifier*scale bezier(mx1,my1,mx2,my2) bezier(mx1,my1,mx2,my2)*scale

Functions

func Add 

func Add(easing Easing)

func AddModifier 

func AddModifier(modifier Modifier)

func Get 

func Get(x float32, easing Easing) float32

func NameOf 

func NameOf(easing Easing) id.Identifier

func StringOf 

func StringOf(easing Easing) string

Types

type Bezier 

type Bezier struct {
	MX1, MY1, MX2, MY2 float32
}

func NewBezier 

func NewBezier(MX1, MY1, MX2, MY2 float32) Bezier

func (Bezier) A 

func (b Bezier) A(aA1, aA2 float32) float32

func (Bezier) B 

func (b Bezier) B(aA1, aA2 float32) float32

func (Bezier) C 

func (b Bezier) C(aA1 float32) float32

func (Bezier) CalcBezier 

func (b Bezier) CalcBezier(aT, aA1, aA2 float32) float32

func (Bezier) Ease 

func (b Bezier) Ease(x float32) float32

func (Bezier) GetSlope 

func (b Bezier) GetSlope(aT, aA1, aA2 float32) float32

func (Bezier) GetTForX 

func (b Bezier) GetTForX(aX float32) float32

func (Bezier) Name 

func (b Bezier) Name() id.Identifier

func (Bezier) String 

func (b Bezier) String() string

type Easing 

type Easing interface {
	Ease(x float32) float32
	Name() id.Identifier
	String() string
}

func MustParse 

func MustParse(s string) Easing

func Name 

func Name(name string, easing Easing) Easing

func Parse 

func Parse(s string) (Easing, error)

type Fn 

type Fn func(x float32) float32

func (Fn) Ease 

func (fn Fn) Ease(x float32) float32

func (Fn) Name 

func (fn Fn) Name() id.Identifier

func (Fn) String 

func (fn Fn) String() string

type Modified 

type Modified struct {
	Modifier Modifier
	Easing   Easing
	Fn       Fn
}

func (Modified) Ease 

func (m Modified) Ease(x float32) float32

func (Modified) Name 

func (m Modified) Name() id.Identifier

func (Modified) String 

func (m Modified) String() string

type Modifier 

type Modifier struct {
	Fn   ModifierFn
	Name id.Identifier
}

func NewModifier 

func NewModifier(name string, fn ModifierFn) Modifier

func (Modifier) Modify 

func (m Modifier) Modify(easing Easing) Modified

type ModifierFn 

type ModifierFn func(easing Fn) Fn

type Named 

type Named struct {
	// contains filtered or unexported fields
}

func (Named) Ease 

func (en Named) Ease(x float32) float32

func (Named) Name 

func (en Named) Name() id.Identifier

func (Named) String 

func (en Named) String() string

type Scaled 

type Scaled struct {
	Scale  float32
	Easing Easing
}

func (Scaled) Ease 

func (s Scaled) Ease(x float32) float32

func (Scaled) Name 

func (s Scaled) Name() id.Identifier

func (Scaled) String 

func (s Scaled) String() string

type Subset 

type Subset struct {
	Easing     Easing
	Start, End float32
	// contains filtered or unexported fields
}

func NewSubset 

func NewSubset(easing Easing, start, end float32) Subset

func (Subset) Ease 

func (s Subset) Ease(x float32) float32

func (Subset) Name 

func (s Subset) Name() id.Identifier

func (Subset) String 

func (s Subset) String() string

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.