You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
36 lines
809 B
Go
36 lines
809 B
Go
package math
|
|
|
|
import "encoding/json"
|
|
|
|
type Bounds struct {
|
|
Min Vec `json:"min"`
|
|
Max Vec `json:"max"`
|
|
}
|
|
|
|
func CreateBounds(width, height int) Bounds {
|
|
return Bounds{
|
|
Min: Vec{0, 0},
|
|
Max: Vec{width - 1, height - 1},
|
|
}
|
|
}
|
|
|
|
func (b Bounds) Width() int { return Abs(b.Max.X - b.Min.X) }
|
|
func (b Bounds) Height() int { return Abs(b.Max.Y - b.Min.Y) }
|
|
func (b Bounds) Area() int { return b.Width() * b.Height() }
|
|
|
|
func (b Bounds) Contains(v Vec) bool {
|
|
return v.X >= b.Min.X && v.X <= b.Max.X && v.Y >= b.Min.Y && v.Y <= b.Max.Y
|
|
}
|
|
|
|
func (b Bounds) MarshalJSON() ([]byte, error) { return json.Marshal([2]Vec{b.Min, b.Max}) }
|
|
|
|
func (b *Bounds) UnmarshalJSON(buf []byte) error {
|
|
var raw [2]Vec
|
|
if err := json.Unmarshal(buf, &raw); err != nil {
|
|
return err
|
|
}
|
|
b.Min = raw[0]
|
|
b.Max = raw[1]
|
|
return nil
|
|
}
|