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Code Issues Releases Wiki Activity

naming

This commit is contained in:
kepler155c@gmail.com 2017-10-22 19:10:29 -04:00
parent 8d3f5329f2
commit 22a432492c
1 changed files with 24 additions and 11 deletions
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35
sys/apis/point.lua
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@ -27,7 +27,7 @@ function Point.subtract(a, b)
end end
-- Euclidian distance -- Euclidian distance
function Point.pythagoreanDistance(a, b) function Point.distance(a, b)
return math.sqrt( return math.sqrt(
math.pow(a.x - b.x, 2) + math.pow(a.x - b.x, 2) +
math.pow(a.y - b.y, 2) + math.pow(a.y - b.y, 2) +
@ -57,28 +57,28 @@ function Point.calculateTurns(ih, oh)
end end
function Point.calculateHeading(pta, ptb) function Point.calculateHeading(pta, ptb)
local heading local heading
local xd, zd = pta.x - ptb.x, pta.z - ptb.z
if (pta.heading % 2) == 0 and pta.z ~= ptb.z then if (pta.heading % 2) == 0 and zd ~= 0 then
if ptb.z > pta.z then if zd < 0 then
heading = 1 heading = 1
else else
heading = 3 heading = 3
end end
elseif (pta.heading % 2) == 1 and pta.x ~= ptb.x then elseif (pta.heading % 2) == 1 and xd ~= 0 then
if ptb.x > pta.x then if xd < 0 then
heading = 0 heading = 0
else else
heading = 2 heading = 2
end end
elseif pta.heading == 0 and pta.x > ptb.x then elseif pta.heading == 0 and xd > 0 then
heading = 2 heading = 2
elseif pta.heading == 2 and pta.x < ptb.x then elseif pta.heading == 2 and xd < 0 then
heading = 0 heading = 0
elseif pta.heading == 1 and pta.z > ptb.z then elseif pta.heading == 1 and zd > 0 then
heading = 3 heading = 3
elseif pta.heading == 3 and pta.z < ptb.z then elseif pta.heading == 3 and zd < 0 then
heading = 1 heading = 1
end end
@ -134,7 +134,6 @@ function Point.closest(reference, pts)
end end
function Point.eachClosest(spt, ipts, fn) function Point.eachClosest(spt, ipts, fn)
local pts = Util.shallowCopy(ipts) local pts = Util.shallowCopy(ipts)
while #pts > 0 do while #pts > 0 do
local pt = Point.closest(spt, pts) local pt = Point.closest(spt, pts)
@ -176,6 +175,20 @@ function Point.inBox(pt, box)
pt.z <= box.ez pt.z <= box.ez
end end
function Point.rotate(pt, facing)
local x, z = pt.x, pt.z
if facing == 1 then
pt.x = z
pt.z = -x
elseif facing == 2 then
pt.x = -x
pt.z = -z
elseif facing == 3 then
pt.x = -z
pt.z = x
end
end
return Point return Point
--[[ --[[