/
strike.go
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/
strike.go
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// Copyright 2022 individual contributors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// <http://www.apache.org/licenses/LICENSE-2.0>
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package blitzortungc
import (
"math/big"
"time"
)
// Station represents a single station that reported a given lightning strike.
type Station struct {
// Station that has reported the signal.
ID int `json:"sta"`
// Status of the signal.
// bit 1 = polarity negative
// bit 2 = polarity positive
// bit 3 = signal is used for the computation
Status int `json:"status"`
// Time difference to the time of the lightning strike in nanoseconds.
TimeDeltaValue int `json:"time"`
Latitude float64 `json:"lat"` // Latitude of the detector in degree (decimal).
Longitude float64 `json:"lon"` // Longitude of the detector in degree (decimal).
Altitude int `json:"alt"` // Altitude of the detector in meter.
}
// Strike represents a single lightning strike as reported by the remote server.
type Strike struct {
Status *int `json:"status,omitempty"`
Polarity int `json:"pol"`
Signals []Station `json:"sig"`
TimeValue big.Int `json:"time"`
DelayValue float64 `json:"delay"`
// MaxDeviationSpan is the maximal deviation span in nanoseconds.
MaxDeviationSpan int `json:"mds"`
// MaxCircularGap is the maximal circular gap in degree between two stations.
MaxCircularGap *int `json:"mcg,omitempty"`
Region int `json:"region"`
Latitude float64 `json:"lat"` // Latitude in degree (decimal).
Longitude float64 `json:"lon"` // Longitude in degree (decimal).
Altitude int `json:"alt"` // Altitude in meter.
}
// Delay interprets the DelayValue field as a time.Duration value.
func (s Strike) Delay() time.Duration {
return time.Duration(s.DelayValue*1e3) * time.Millisecond
}
// Time interprets the TimeValue field as a time.Time value.
func (s Strike) Time() time.Time {
var t, m big.Int
t.DivMod(&s.TimeValue, big.NewInt(1e9), &m)
return time.Unix(t.Int64(), m.Int64())
}