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package aoc
import (
"fmt"
"math"
"strings"
)
type Coordinate struct {
X, Y int
}
func NewCoordinate(x, y int) *Coordinate {
return &Coordinate{x, y}
}
func (c Coordinate) Relative(t Coordinate) Coordinate {
return Coordinate{X: c.X + t.X, Y: c.Y + t.Y}
}
func (c Coordinate) North() Coordinate {
return Coordinate{X: c.X, Y: c.Y - 1}
}
func (c Coordinate) East() Coordinate {
return Coordinate{X: c.X + 1, Y: c.Y}
}
func (c Coordinate) South() Coordinate {
return Coordinate{X: c.X, Y: c.Y + 1}
}
func (c Coordinate) West() Coordinate {
return Coordinate{X: c.X - 1, Y: c.Y}
}
func (c *Coordinate) NW() Coordinate {
return Coordinate{X: c.X - 1, Y: c.Y - 1}
}
func (c *Coordinate) NE() Coordinate {
return Coordinate{X: c.X + 1, Y: c.Y - 1}
}
func (c *Coordinate) SW() Coordinate {
return Coordinate{X: c.X - 1, Y: c.Y + 1}
}
func (c *Coordinate) SE() Coordinate {
return Coordinate{X: c.X + 1, Y: c.Y + 1}
}
func (c *Coordinate) GetNorthCoord() *Coordinate {
return &Coordinate{
X: c.X,
Y: c.Y - 1,
}
}
func (c *Coordinate) GetEastCoord() *Coordinate {
return &Coordinate{
X: c.X + 1,
Y: c.Y,
}
}
func (c *Coordinate) GetSouthCoord() *Coordinate {
return &Coordinate{
X: c.X,
Y: c.Y + 1,
}
}
func (c *Coordinate) GetWestCoord() *Coordinate {
return &Coordinate{
X: c.X - 1,
Y: c.Y,
}
}
func CoordinateFromString(str string) *Coordinate {
c := Coordinate{}
r := strings.NewReader(str)
_, err := fmt.Fscanf(r, "[%d, %d]", &c.X, &c.Y)
if err != nil {
panic(err)
}
return &c
}
func (c Coordinate) Angle(t Coordinate) float64 {
ret := math.Atan2(float64(t.X-c.X), float64(c.Y-t.Y)) * 180 / math.Pi
if ret < 0 {
ret = ret + 360
}
return ret
}
func (c Coordinate) String() string {
return fmt.Sprintf("[%d, %d]", c.X, c.Y)
}
func (c Coordinate) Distance(t Coordinate) int {
return AbsInt(c.X-t.X) + AbsInt(c.Y-t.Y)
}
func (c Coordinate) Equals(c2 Coordinate) bool {
return c.X == c2.X && c.Y == c2.Y
}