Derek McQuay
d6e76ef26b
also includes lineOnLine to determine if a line is on another line. Added a new type line struct which consists of two points.
34 lines
685 B
Go
34 lines
685 B
Go
package rect
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import "math"
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type Point struct {
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X, Y float64
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}
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type line struct {
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pt1, pt2 Point
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}
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func distance(p1, p2 Point) float64 {
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return math.Sqrt(math.Pow((p1.X-p2.X), 2) + math.Pow((p1.Y-p2.Y), 2))
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}
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func onLine(rp1, rp2, p Point) bool {
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if distance(rp1, p)+distance(rp2, p) == distance(rp1, rp2) {
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minx, maxx := math.Min(rp1.X, rp2.X), math.Max(rp1.X, rp2.X)
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miny, maxy := math.Min(rp1.Y, rp2.Y), math.Max(rp1.Y, rp2.Y)
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if minx <= p.X && p.X <= maxx && miny <= p.Y && p.Y <= maxy {
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return true
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}
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}
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return false
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}
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func lineOnLine(l1, l2 line) bool {
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if onLine(l1.pt1, l1.pt2, l2.pt1) && onLine(l1.pt1, l1.pt2, l2.pt2) {
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return true
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}
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return false
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}
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