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36 lines
809 B
Go
36 lines
809 B
Go
4 years ago
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package math
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import "encoding/json"
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type Bounds struct {
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Min Vec `json:"min"`
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Max Vec `json:"max"`
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}
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func CreateBounds(width, height int) Bounds {
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return Bounds{
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Min: Vec{0, 0},
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Max: Vec{width - 1, height - 1},
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}
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}
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func (b Bounds) Width() int { return Abs(b.Max.X - b.Min.X) }
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func (b Bounds) Height() int { return Abs(b.Max.Y - b.Min.Y) }
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func (b Bounds) Area() int { return b.Width() * b.Height() }
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func (b Bounds) Contains(v Vec) bool {
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return v.X >= b.Min.X && v.X <= b.Max.X && v.Y >= b.Min.Y && v.Y <= b.Max.Y
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}
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func (b Bounds) MarshalJSON() ([]byte, error) { return json.Marshal([2]Vec{b.Min, b.Max}) }
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func (b *Bounds) UnmarshalJSON(buf []byte) error {
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var raw [2]Vec
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if err := json.Unmarshal(buf, &raw); err != nil {
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return err
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}
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b.Min = raw[0]
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b.Max = raw[1]
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return nil
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}
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