38 lines
630 B
Go
38 lines
630 B
Go
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package aoc
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import (
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"fmt"
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"math"
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"strings"
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)
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type Coordinate struct {
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X, Y int
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}
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func CoordinateFromString(str string) *Coordinate {
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c := Coordinate{}
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r := strings.NewReader(str)
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_, err := fmt.Fscanf(r, "[%d, %d]", c.X, c.Y)
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if err != nil {
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panic(err)
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}
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return &c
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}
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func (c Coordinate) Angle(t Coordinate) float64 {
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ret := math.Atan2(float64(t.X-c.X), float64(c.Y-t.Y)) * 180 / math.Pi
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if ret < 0 {
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ret = ret + 360
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}
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return ret
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}
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func (c Coordinate) String() string {
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return fmt.Sprintf("[%d, %d]", c.X, c.Y)
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}
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func (c Coordinate) Distance(t Coordinate) int {
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return AbsInt(c.X-t.X) + AbsInt(c.Y-t.Y)
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}
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