ween

package
v0.0.0-...-e1c21c9 Latest Latest
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 Go to latest Published: May 10, 2019 License: Zlib Imports: 4 Imported by: 6

Documentation

Index

Constants

View Source 
const (
	RepeatOnce     = 1
	RepeatInfinite = -1
)

Sets how many times the animation should be repeated.

Variables

This section is empty.

Functions

func ColorLerp 

func ColorLerp(from, to gfx.Color, f float32) gfx.Color

func F32Lerp 

func F32Lerp(from, to float32, f float32) float32

func IntLerp 

func IntLerp(from, to int, f float32) int

func U16Lerp 

func U16Lerp(from, to uint16, f float32) uint16

func U8Lerp 

func U8Lerp(from, to uint8, f float32) uint8

func Vec2Lerp 

func Vec2Lerp(from, to f32.Vec2, f float32) f32.Vec2

Types

type AnimState 

type AnimState uint8
const (
	Waiting AnimState = iota
	Running
	Stopped
	Dispose
)

type Animation 

type Animation struct {
	LoopType
	// contains filtered or unexported fields
}

维护动画的状态数据 底层动画系统，使用float作为单位 0-1

func (*Animation) Animate 

func (anim *Animation) Animate(dt float32) (f float32)

动画核心算法

func (*Animation) Reset 

func (anim *Animation) Reset()

type Animator 

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

func (Animator) Dispose 

func (am Animator) Dispose()

func (Animator) Forward 

func (am Animator) Forward()

func (Animator) OnComplete 

func (am Animator) OnComplete(cb EndCallback) Animator

func (Animator) OnUpdate 

func (am Animator) OnUpdate(cb UpdateCallback) Animator

func (Animator) Reverse 

func (am Animator) Reverse()

func (Animator) SetDuration 

func (am Animator) SetDuration(d float32) Animator

func (Animator) SetFunction 

func (am Animator) SetFunction(function ease.Function) Animator

func (Animator) SetRepeat 

func (am Animator) SetRepeat(count int, loop LoopType) Animator

func (Animator) Stop 

func (am Animator) Stop()

func (Animator) Valid 

func (am Animator) Valid() bool

func (Animator) Value 

func (am Animator) Value() (f float32)

type Callback 

type Callback struct {
	UpdateCallback
	EndCallback
}

type ColorTween 

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

A gfx.Color linear interpolation between a beginning and ending value. It use the Animator as the input.

func (*ColorTween) Animate 

func (t *ColorTween) Animate(animator Animator) Animator

Animate sets the Animator that drives the Tween.

func (*ColorTween) Animator 

func (t *ColorTween) Animator() Animator

Animator returns the Animator driving the Tween.

func (*ColorTween) Range 

func (t *ColorTween) Range(from, to gfx.Color) *ColorTween

Range sets the beginning and ending value of the ColorTween.

func (*ColorTween) Value 

func (t *ColorTween) Value() gfx.Color

Returns the interpolated value for the current value of the given Animator.

type EndCallback 

type EndCallback func(reverse bool)

type F32Tween 

type F32Tween struct {
	// contains filtered or unexported fields
}

A float32 linear interpolation between a beginning and ending value. It use the Animator as the input.

func (*F32Tween) Animate 

func (t *F32Tween) Animate(am Animator) Animator

Animate sets the Animator that drives the Tween.

func (*F32Tween) Animator 

func (t *F32Tween) Animator() Animator

Animator returns the Animator driving the Tween.

func (*F32Tween) Range 

func (t *F32Tween) Range(from, to float32) *F32Tween

Range sets the beginning and ending value of the F32Tween.

func (*F32Tween) Value 

func (t *F32Tween) Value() float32

Returns the interpolated value for the current value of the given Animator.

type LoopType 

type LoopType uint8

Defines what this animation should do when it reaches the end. 

const (
	Restart LoopType = iota
	PingPong
)

type TweenEngine 

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

func NewEngine 

func NewEngine() *TweenEngine

func (*TweenEngine) Delete 

func (eng *TweenEngine) Delete(index int)

func (*TweenEngine) Duration 

func (eng *TweenEngine) Duration(index int) float32

func (*TweenEngine) Forward 

func (eng *TweenEngine) Forward(index int)

Play an animation, produces values that range from 0.0 to 1.0, during a given duration.

func (*TweenEngine) New 

func (eng *TweenEngine) New() (uid int)

func (*TweenEngine) NewAnimator 

func (eng *TweenEngine) NewAnimator() Animator

func (*TweenEngine) Reverse 

func (eng *TweenEngine) Reverse(index int)

Play an animation in reverse. If the animation is already running, stop itself and play backwards from the point. If the animation is not running, then it will start from the end and play backwards.

func (*TweenEngine) SetCompleteCallback 

func (eng *TweenEngine) SetCompleteCallback(index int, cb EndCallback)

func (*TweenEngine) SetDuration 

func (eng *TweenEngine) SetDuration(index int, d float32)

Duration is the length of time this animation should last.

func (*TweenEngine) SetFunction 

func (eng *TweenEngine) SetFunction(index int, fn ease.Function)

func (*TweenEngine) SetRepeat 

func (eng *TweenEngine) SetRepeat(index int, count int, loop LoopType)

Repeat the animation. If playback type is forward, restart the animation from start, if the playback type is backward or ping-pong,

func (*TweenEngine) SetTimeScale 

func (eng *TweenEngine) SetTimeScale(sk float32)

func (*TweenEngine) SetUpdateCallback 

func (eng *TweenEngine) SetUpdateCallback(index int, cb UpdateCallback)

func (*TweenEngine) Stop 

func (eng *TweenEngine) Stop(index int)

Stops running this animation.

func (*TweenEngine) Update 

func (eng *TweenEngine) Update(dt float32)

It's not easy to maintain the callback, one many add or delete animation while looping. Thanks to our delayed deleting strategy that delete operation only mark the animation 'Disposed' and will not change the size of the active animation. But add new animation will change the size, since new animation is always appended to the end. We can easily know the real size. Note: we need a BETTER callback policy.

func (*TweenEngine) Value 

func (eng *TweenEngine) Value(index int) (f float32)

type UpdateCallback 

type UpdateCallback func(reverse bool, f float32)

type Value 

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

type Vec2Tween 

type Vec2Tween struct {
	// contains filtered or unexported fields
}

A f32.Vec2 linear interpolation between a beginning and ending value. It use the Animator as the input.

func (*Vec2Tween) Animate 

func (t *Vec2Tween) Animate(am Animator) Animator

Animate sets the Animator that drives the Tween.

func (*Vec2Tween) Animator 

func (t *Vec2Tween) Animator() Animator

Animator returns the Animator driving the Tween.

func (*Vec2Tween) Range 

func (t *Vec2Tween) Range(from, to f32.Vec2) *Vec2Tween

Range sets the beginning and ending value of the Vec2Tween.

func (*Vec2Tween) Value 

func (t *Vec2Tween) Value() f32.Vec2

Returns the interpolated value for the current value of the given Animator.

Source Files

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