Part Point Extension?
So, imagine you have 2 points...
pointa, and pointb.
Here is the graph:
01 | --[[ |
02 | A _ _ _ _ _ _ _ |
03 | _ _ _ _ _ _ _ _ |
04 | _ _ _ _ _ _ _ _ |
05 | _ _ _ _ _ _ _ _ |
06 | _ _ _ _ _ _ _ _ |
07 | _ _ _ _ _ _ _ _ |
08 | _ _ _ _ _ _ _ _ |
09 | _ _ _ _ _ _ _ B |
10 | ]] |
Now, I want to create a part that extends the length of the distance between pointa and pointb.
Let C be the new part.
01 | --[[ |
02 | A _ _ _ _ _ _ _ |
03 | _ C _ _ _ _ _ _ |
04 | _ _ C _ _ _ _ _ |
05 | _ _ _ C _ _ _ _ |
06 | _ _ _ _ C _ _ _ |
07 | _ _ _ _ _ C _ _ |
08 | _ _ _ _ _ _ C _ |
09 | _ _ _ _ _ _ _ B |
10 | ]] |
How would I go about doing this? I've thought about using lookvector, but I haven't found a decent way to learn how to do this... I can find almost nothing on it.
Help?
1 answer
Say a and b are two positions in the world (they are Vector3s).
1 | a = Vector3.new(20, 10, 40) |
2 | b = Vector3.new(50, 20, 10) |
We want to make a part that stretches between them. Let's say it's 2x2xlength, with the front face being centered on b and the back face being centered on a.
1 | local p = Instance.new("Part", workspace) |
2 | p.Anchored = true |
length, which is just the distance between a and b, is easily computed using magnitude:
1 | local length = (a - b).magnitude |
2 | p.Size = Vector3.new(2, 2, length) |
If the back is at a and the front is at b, the middle is exactly half way across:
1 | local middle = (a + b) / 2 |
Using the CFrame.new(lookingFrom, lookingAt) constructor, we can easily make the right CFrame for p:
1 | p.CFrame = CFrame.new(middle, b) |
