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33 lines
670 B
Go
33 lines
670 B
Go
package main
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import (
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"fmt"
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"math"
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)
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func main() {
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const n = 12
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a := 1400.0
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b := 4200.0
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theta0 := 0.38
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dtheta := 0.52
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pts := make([]struct{ x, y, r float64 }, n)
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for i := 0; i < n; i++ {
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th := theta0 + float64(i)*dtheta
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r := a + b*th
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pts[i].x = r * math.Cos(th)
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pts[i].y = r * math.Sin(th)
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pts[i].r = r
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fmt.Printf("%d: %d, %d (r=%.0f)\n", i, int(math.Round(pts[i].x)), int(math.Round(pts[i].y)), r)
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}
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fmt.Println("--- distances ---")
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var sum float64
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for i := 0; i < n; i++ {
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j := (i + 1) % n
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d := math.Hypot(pts[j].x-pts[i].x, pts[j].y-pts[i].y)
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sum += d
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fmt.Printf("%d->%d: %.0f\n", i, j, d)
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}
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fmt.Println("avg:", sum/float64(n))
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}
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