Translation Code
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function translateToScreen(x,y)
x = x - 960
y = y - 540
x = x * 0.5
local angle = math.atan2(y,x)-math.pi/4
if angle < 0 then angle = angle +math.pi*2 end
local length = math.sqrt(x * x + y * y)
x,y = math.cos(angle)*length , math.sin(angle)*length
x = x / grid.blockSize
y = y / grid.blockSize
return x,y
end
function translateToIso(x,y,z)
z = z or 0
assert(type(x) == "number", "first argument (x) is not a number")
assert(type(y) == "number", "second argument (y) is not a number")
local angle = math.atan2(y,x)+math.pi/4
if angle < 0 then angle = angle +math.pi*2 end
local length = math.sqrt(x * x + y * y)
x,y = math.cos(angle)*length , math.sin(angle)*length
x,y = x*2*grid.blockSize, y*grid.blockSize
x,y = x+960,y+540- z*grid.blockSize*math.sqrt(2)
return x , y
end
Lua
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