Steve Cliff
59 lines
1.3 KiB
Go
59 lines
1.3 KiB
Go
package layout
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import (
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"math"
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"github.com/stevec/fancywin/internal/config"
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)
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type Rect struct{ Left, Top, Right, Bottom int32 }
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type Point struct{ X, Y int32 }
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func Resolve(work Rect, z config.Zone, gap int) Rect {
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w, h := float64(work.Right-work.Left), float64(work.Bottom-work.Top)
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r := Rect{
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Left: work.Left + int32(math.Round(w*z.X/100)),
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Top: work.Top + int32(math.Round(h*z.Y/100)),
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Right: work.Left + int32(math.Round(w*(z.X+z.Width)/100)),
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Bottom: work.Top + int32(math.Round(h*(z.Y+z.Height)/100)),
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}
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g := int32(gap)
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r.Left += g
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r.Top += g
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r.Right -= g
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r.Bottom -= g
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if r.Right <= r.Left {
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r.Right = r.Left + 1
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}
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if r.Bottom <= r.Top {
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r.Bottom = r.Top + 1
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}
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return r
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}
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func Contains(r Rect, p Point) bool {
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return p.X >= r.Left && p.X < r.Right && p.Y >= r.Top && p.Y < r.Bottom
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}
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func ZoneAt(work Rect, zones []config.Zone, gap int, p Point) int {
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for i, z := range zones {
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if Contains(Resolve(work, z, gap), p) {
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return i
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}
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}
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return -1
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}
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func Closest(work Rect, zones []config.Zone, p Point) int {
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best, bestD := -1, math.MaxFloat64
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for i, z := range zones {
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r := Resolve(work, z, 0)
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cx, cy := float64(r.Left+r.Right)/2, float64(r.Top+r.Bottom)/2
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dx, dy := float64(p.X)-cx, float64(p.Y)-cy
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if d := dx*dx + dy*dy; d < bestD {
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best, bestD = i, d
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}
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}
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return best
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}
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