61 lines
1.1 KiB
Go
61 lines
1.1 KiB
Go
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// Package datapoint holds the position fix type shared by the macker client
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// and server.
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package datapoint
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import "sync"
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type Tri struct {
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Lat, Long, Alt float64
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}
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// DataPoint is a single position fix extracted from a gpsd TPV report.
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// Timestamp is Unix time in milliseconds; zero means gpsd omitted the time.
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type DataPoint struct {
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Speed *float64 // Ground speed in metres per second; nil means unavailable.
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Timestamp uint64
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Lat, LatErr float64
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Long, LongErr float64
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Alt, AltErr float64
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}
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func (dp DataPoint) getTri() Tri {
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return Tri{
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dp.Lat,
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dp.Long,
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dp.Alt,
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}
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}
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type TrackBuffer struct {
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DataPoints []DataPoint
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Mtx *sync.Mutex
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}
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func GenTrackBuff() TrackBuffer {
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var sm sync.Mutex
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return TrackBuffer{
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[]DataPoint{},
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&sm,
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}
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}
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func (tb *TrackBuffer) Add(input DataPoint) {
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tb.Mtx.Lock()
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tb.DataPoints = append(tb.DataPoints, input)
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tb.Mtx.Unlock()
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}
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func (tb *TrackBuffer) StartTBHandler() (chan DataPoint, *TrackBuffer) {
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inchan := make(chan DataPoint)
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go func() {
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for tmp := range inchan {
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tb.Add(tmp)
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}
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}()
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return inchan, tb
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}
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