Brian Buller
10a3ba0699
I made some minor changes to helpers/coordinate... I probably need to go back and fix several previous years/days.
100 lines
1.9 KiB
Go
100 lines
1.9 KiB
Go
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 NewCoordinate(x, y int) *Coordinate {
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return &Coordinate{x, y}
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}
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func (c Coordinate) Relative(t Coordinate) Coordinate {
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return Coordinate{X: c.X + t.X, Y: c.Y + t.Y}
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}
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func (c Coordinate) North() Coordinate {
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return Coordinate{X: c.X, Y: c.Y - 1}
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}
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func (c Coordinate) East() Coordinate {
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return Coordinate{X: c.X + 1, Y: c.Y}
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}
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func (c Coordinate) South() Coordinate {
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return Coordinate{X: c.X, Y: c.Y + 1}
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}
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func (c Coordinate) West() Coordinate {
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return Coordinate{X: c.X - 1, Y: c.Y}
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}
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func (c *Coordinate) NW() Coordinate {
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return Coordinate{X: c.X - 1, Y: c.Y - 1}
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}
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func (c *Coordinate) NE() Coordinate {
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return Coordinate{X: c.X + 1, Y: c.Y - 1}
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}
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func (c *Coordinate) SW() Coordinate {
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return Coordinate{X: c.X - 1, Y: c.Y + 1}
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}
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func (c *Coordinate) SE() Coordinate {
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return Coordinate{X: c.X + 1, Y: c.Y + 1}
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}
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func (c *Coordinate) GetNorthCoord() *Coordinate {
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return &Coordinate{
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X: c.X,
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Y: c.Y - 1,
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}
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}
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func (c *Coordinate) GetEastCoord() *Coordinate {
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return &Coordinate{
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X: c.X + 1,
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Y: c.Y,
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}
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}
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func (c *Coordinate) GetSouthCoord() *Coordinate {
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return &Coordinate{
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X: c.X,
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Y: c.Y + 1,
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}
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}
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func (c *Coordinate) GetWestCoord() *Coordinate {
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return &Coordinate{
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X: c.X - 1,
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Y: c.Y,
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}
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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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func (c Coordinate) Equals(c2 Coordinate) bool {
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return c.X == c2.X && c.Y == c2.Y
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}
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