Help with finding vector3 points

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1

Hey, I’m trying to get the values of point1 and point2 shown on the diagram below, although I’m not so good at math.

image
image1000×750 19.3 KB

So far, I’ve tried this:

local char = player.Character
local startpos = char.HumanoidRootPart.CFrame * CFrame.new(0,0,-2)
local startpos2 = char.HumanoidRootPart.Position
local endpos = mouse.Hit.Position

local inbetweenpoints = endpos - startpos2
print(inbetweenpoints)

local curve1 = inbetweenpoints / 3
local curve2 = curve1 * 2

this gave me values which gave me points which are just at a random point in the map.
image

How should I go about doing this?

2

I believe you need to add startpos to curve1 in order to position the start of the vector at startpos.

Then the addition of the direction vector from startpos to endpos will move it 1/3 forward along the line from the mentioned diagram.

For curve 2 using this method you will need to add startpos and inbetweenpoints*2/3.

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3

Use Vector3:Lerp()

local startpos = Vector3.new(0, 0, 5)
local endpoint = Vector3.new(0, 0, 10)
local alpha = 0.5
local midpoint = startpos:Lerp(endpoint, alpha) --> Vector3 (0, 0, 7.5)

alternatively you can do

local alpha = 0.5
local midpoint = startpos+(endpos-startpos)/alpha
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4

Ah, yes this has given me the effect I needed. Thank you!

For anyone wondering, the red parts are at the positions created here:

image

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