Math.distance

Available since: Gideros 2020.9
Class: math

Description

Returns the distance betwen two points.

(number) = math.distance(x1,y1,z1,x2,y2,z2)
(number) = math.distance({x1,y1,z1},{x2,y2,z2})
(number) = math.distance({x=x1,y=y1,z=z1},{x=x2,y=y2,z=z2})

Note: the number will always be a positive number

Parameters

x1: (number) X component of the first point
y1: (number) Y component of the first point
z1: (number) Z component of the first point optional
x2: (number) X component of the second point
y2: (number) Y component of the second point
z2: (number) Z component of the second point optional

Return values

Returns (number) the distance between the two points (always positive)

Example

local mydist = 256
function LevelX:onEnterFrame(e)
	-- player position
	posx, posy = self.player1.body:getPosition()
	-- for perfs
	for k, v in pairs(self.myobjects) do -- k=sprite, v=box2d body
		local x1, y1 = v:getPosition()
		if math.distance(x1, y1, posx, posy) > mydist then
			k:setVisible(false)
		else
			k:setVisible(true)
		end
	end
end

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• Math
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• Math.acos
• Math.asin
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• Math.atan2
• Math.ceil
• Math.clamp
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• Math.cosh
• Math.cross
• Math.deg
• Math.distance
• Math.distances
• Math.dot
• Math.edge
• Math.exp
• Math.fft
• Math.floor
• Math.fmod
• Math.frexp
• Math.ifft
• Math.inside
• Math.ldexp
• Math.length
• Math.log
• Math.log10
• Math.max
• Math.min
• Math.modf
• Math.nearest
• Math.noise
• Math.normalize
• Math.pow
• Math.rad
• Math.random
• Math.randomseed
• Math.raycast
• Math.round
• Math.sign
• Math.sin
• Math.sinh
• Math.sqrt
• Math.tan
• Math.tanh

• Pi
• Huge

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