30 lines
1.2 KiB
Nim
30 lines
1.2 KiB
Nim
import math, sequtils, strformat, strutils
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const
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headingNames: array[1..32, string] = [
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"North", "North by east", "North-northeast", "Northeast by north",
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"Northeast", "Northeast by east", "East-northeast", "East by north",
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"East", "East by south", "East-southeast", "Southeast by east",
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"Southeast", "Southeast by south","South-southeast", "South by east",
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"South", "South by west", "South-southwest", "Southwest by south",
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"Southwest", "Southwest by west", "West-southwest", "West by south",
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"West", "West by north", "West-northwest", "Northwest by west",
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"Northwest", "Northwest by north", "North-northwest", "North by west"]
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maxNameLength = headingNames.mapIt(it.len).max
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degreesPerHeading = 360 / 32
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func toCompassIndex(degree: float): 1..32 =
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var degree = (degree + degreesPerHeading / 2).floorMod 360
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int(degree / degreesPerHeading) + 1
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func toCompassHeading(degree: float): string = headingNames[degree.toCompassIndex]
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for i in 0..32:
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let
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heading = float(i) * 11.25 + (case i mod 3
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of 1: 5.62
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of 2: -5.62
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else: 0)
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index = heading.toCompassIndex
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compassHeading = heading.toCompassHeading.alignLeft(maxNameLength)
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echo fmt"{index:>2} {compassHeading} {heading:6.2f}"
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