Missing vec2 functions

Amber · December 7, 2022, 6:40pm

I’m missing a few vec2 operations in Codea 4

rotated = vec2:rotate(radians)
radians = vec2:angleBetween(anotherVec2)

what should I use instead…?
I do see some new functions (refract and reflect)…

moechofe · December 7, 2022, 9:43pm

from:lerp(to,ratio)

John · December 8, 2022, 5:56am

I just forgot to put those in (or an equivalent version), so I’ll just need to add them in the next beta…

LoopSpace · December 9, 2022, 8:56pm

Posting my vector extensions in case anyone finds them useful

github.com

loopspace/Codea-Library-Maths/blob/master/VecExt.lua

-- Extensions to the native Codea vector and matrix types
-- Author: Andrew Stacey
-- Website: http://loopspace.mathforge.com
-- Licence: CC0 http://wiki.creativecommons.org/CC0

--[[
vec4s are promoted to quaternions, vec2s to complex numbers, and other functions are adapted to make use of them
--]]

-- Simplistic error handling

local error = error or print

-- Localise the maths functions/constants that we use for faster lookup.
local abs = math.abs
local pow = math.pow
local sqrt = math.sqrt
local sin = math.sin
local cos = math.cos
local acos = math.acos

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