95 lines
2.3 KiB
CoffeeScript
95 lines
2.3 KiB
CoffeeScript
#00000000 0000000 0000000
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#000 000 000 000 000
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#00000000 000 000 0000000
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#000 000 000 000
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#000 0000000 0000000
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class Pos
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constructor: (@x, @y) ->
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copy: => new Pos @x, @y
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plus: (val) =>
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newPos = @copy()
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if val?
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newPos.x += val.x unless isNaN(val.x)
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newPos.y += val.y unless isNaN(val.y)
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newPos
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minus: (val) =>
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newPos = @copy()
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if val?
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newPos.x -= val.x unless isNaN(val.x)
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newPos.y -= val.y unless isNaN(val.y)
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newPos
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times: (val) => @copy().scale val
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clamped: (lower, upper) => @copy().clamp lower, upper
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to: (other) => other.minus @
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mid: (other) => @plus(other).scale 0.5
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min: (val) =>
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newPos = @copy()
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return newPos unless val?
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newPos.x = val.x if not isNaN(val.x) and @x > val.x
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newPos.y = val.y if not isNaN(val.y) and @y > val.y
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newPos
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max: (val) =>
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newPos = @copy()
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return newPos unless val?
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newPos.x = val.x if not isNaN(val.x) and @x < val.x
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newPos.y = val.y if not isNaN(val.y) and @y < val.y
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newPos
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length: => return Math.sqrt @square()
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square: => (@x * @x) + (@y * @y)
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distSquare: (o) => @minus(o).square()
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dist: (o) => Math.sqrt @distSquare(o)
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same: (o) => @x == o?.x and @y == o?.y
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notSame: (o) => @x != o?.x or @y != o?.y
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check: =>
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newPos = @copy()
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newPos.x = 0 if isNaN(newPos.x)
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newPos.y = 0 if isNaN(newPos.y)
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newPos
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_str: =>
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s = ("<x:#{@x} " if @x?) or "<NaN "
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s += ("y:#{@y}>" if @y?) or "NaN>"
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#_________________________________________________________ destructive
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scale: (val) =>
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@x *= val
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@y *= val
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@
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mul: (other) =>
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@x *= other.x
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@y *= other.y
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@
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add: (other) =>
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@x += other.x
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@y += other.y
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@
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sub: (other) =>
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@x -= other.x
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@y -= other.y
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@
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clamp: (lower, upper) =>
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if lower? and upper?
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{clamp} = require './tools'
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@x = clamp(lower.x, upper.x, @x)
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@y = clamp(lower.y, upper.y, @y)
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@
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module.exports = (x,y) -> new Pos x,y
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