Compress a cframe but not to byte

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#1

Hey! I’m looking for the best way to compress a cframe but not to byte so it can be jsonencoded

#2

Couldn’t you serialize it as a string directly?

local function CFrameToString(CF)
local components = {CF:GetComponents()}

return table.concat(components, " ")
end
1 Like
#3

How would I convert this back?

#4

I was trying to figure out how I could implement a solution using string patterns, however I’m lazy so I chose not to. Basically, you’d just search the string from start to end, stopping at the first white space (which are used as value separators) and storing each value in a table, then unpacking the table and constructing a new CFrame with the tuple values returned from unpack.

I’ll write some simple demo code in Studio real quick since it’s too hard here.

#5

So I’m not very good with string or table manipulation, but I think I’m close?

return CFrame.new(table.unpack(stng:gsub(" ",""):split(",")))

#6 
local separator = ", "

function EncodeCFrame(CF: CFrame): string
	return table.concat({CF:GetComponents()}, separator)
end

function DecodeCFrame(encodedCF: string): CFrame
	return CFrame.new(unpack(string.split(encodedCF, separator)))
end

Example

local CF = CFrame.new(1, 2, 3)
local encodedCFrame = EncodeCFrame(CF)
local decodedCFrame = DecodeCFrame(encodedCFrame)
print(CF == decodedCFrame) --> true
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#8

I’m getting this error for the Decode function

image
image887×28 6.34 KB

I printed the string that I’m putting into the function and I believe it’s fine

46.79191589355469 4.047104835510254 1.6304510831832886 1 0 0 0 1 0 0 0 1

#9

What code have you got currently?

#10 
function decode(str)
	local components = {}
	
	local substrings = str:split(" ")
	
	for _, substring in ipairs(substrings) do
		table.insert(components, tonumber(substring))
	end
	
	return CFrame.new(unpack(components))
end
#11 
	
print(Cfr) -- "46.79191589355469 4.047104835510254 1.6304510831832886 1 0 0 0 1 0 0 0 1"

print(Compressor_Module.LightCFrameDescompress(Cfr)) -- forgot to rename function
#12

You’re not using my functions, otherwise the format would’ve been 1, 2, 3, 4, ...

#13

This is within the module that im using

image

Exactly what you said, just within my module

#15

You got rid of the separator variable for some reason, and the separators don’t match now. You probably use " " in the encoding function and ", " in the decoding function. The issue is on your end

#16

I just didn’t include the variable but they have the same seperator

image

#17

I have no issues when using the two functions you sent

#18

I’m looking through my code to see if the cframe is ever passed as nil when compressing

#19

It turns out I made a stupid mistake with the cframes passed to encode. Thank you and @C_Sharper for helping!

1 Like
#20

The second parameter of string.split() defaults to a single comma, “,”, you may want to use this as your separator/delimiter instead of a comma followed by a whitespace.

#21

It was more for readability, as JSON is a format that is generally supposed to be readable by humans, so this helps if he were to print the whole JSON-encoded data at some point.

#22

JSON encoded strings shouldn’t be parsed via string.split() they should be correctly decoded using the JSONDecode instance method of the HttpService.