fling

package

v0.4.4 Latest Latest Go to latest Published: Dec 12, 2025 License: MIT Imports: 6 Imported by: 0

Details

Valid go.mod file
Redistributable license
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Repository

github.com/oligo/gvcode

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Documentation ¶

Overview ¶

This package is copied from Gio internal fling package: https://github.com/gioui/gio/tree/main/internal/fling. All the credits to the Gio authors and its contributors.

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Animation ¶

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

func (*Animation) Active ¶

func (f *Animation) Active() bool

func (*Animation) Start ¶

func (f *Animation) Start(c unit.Metric, now time.Time, velocity float32) bool

Start a fling given a starting velocity. Returns whether a fling was started.

func (*Animation) Tick ¶

func (f *Animation) Tick(now time.Time) int

Tick computes and returns a fling distance since the last time Tick was called.

type Estimate ¶

type Estimate struct {
	Velocity float32
	Distance float32
}

type Extrapolation ¶

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

Extrapolation computes a 1-dimensional velocity estimate for a set of timestamped points using the least squares fit of a 2nd order polynomial. The same method is used by Android.

func (*Extrapolation) Estimate ¶

func (e *Extrapolation) Estimate() Estimate

Velocity returns an estimate of the implied velocity and distance for the points sampled, or zero if the estimation method failed.

func (*Extrapolation) Sample ¶

func (e *Extrapolation) Sample(t time.Duration, val float32)

Sample adds an absolute sample to the estimation.

func (*Extrapolation) SampleDelta ¶

func (e *Extrapolation) SampleDelta(t time.Duration, delta float32)

SampleDelta adds a relative sample to the estimation.

Source Files ¶

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