[UNSOLVED]How to use RayCastLocal

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#1

  1. What do you want to achieve? My goal is to input the X and Z vectors from the real world into a function, and have the function return the Y position of the vertex or triangle that is at the same or a close X or Z position, or if using RaycastLocal, just the Y position.

  2. What is the issue? I’m using RaycastLocal, as the normal Raycast does not work with EditableMesh (due to Beta Features and Hitbox not updating). When I use RaycastLocal, for some reason, it only prints 0,0
    image
    and I don’t know what to do with this value.

  3. What solutions have you tried so far? I have tried to find more information about RaycastLocal because I don’t understand it well, but no one seems to be discussing it at the moment.

My goal is to return a Y value based on how high the MeshPart or vertex is at the position provided (X, Z).

local origin = Vector3.new(-310.75, 6, -132.25)
local direction = Vector3.new(-310.75, -6, -132.25)

local function castRayFromVectors(origin, direction)
	if not Variables.EditableMesh then return end

	-- Convert the provided world-space origin and direction to object space
	local relativeOrigin = Variables.Object.CFrame:PointToObjectSpace(origin)
	local relativeDirection = Variables.Object.CFrame:VectorToObjectSpace(direction - origin).Unit

	-- Perform the raycast in local space
	local triangleId, point, barycentricCoordinate
	triangleId, point, barycentricCoordinate = Variables.EditableMesh:RaycastLocal(relativeOrigin, relativeDirection * 100)

	if not triangleId then
		-- Didn't hit any triangles
		print("No Hit Triangles")
		return
	end

	-- Return the coordinates X, Y, Z of the collision point
	return point.X, point.Y, point.Z
end

local x, y, z = castRayFromVectors(origin, direction)
if x then
	print("Collision X:", x)
	print("Collision Y:", y)
	print("Collision Z:", z)
	-- Visualizer if point
	local hitMarker = Instance.new("Part")
	hitMarker.Shape = Enum.PartType.Ball
	hitMarker.Name = "Marker"
	hitMarker.Position = Vector3.new(x, y, z)
	hitMarker.Size = Vector3.new(1, 1, 1)
	hitMarker.Anchored = true
	hitMarker.BrickColor = BrickColor.Red()
	hitMarker.Parent = workspace
else
	print("No intersections found.")
end

By the way, you’re seeing two sets of variables for origin and direction. The one that is just a markup is the old hitbox of the mesh that works for Raycast, but I want the new updated hitbox so I can get the X, Y, Z vector that the raycast is supposed to detect as it passes through the MeshPart.

I think I’m close to making it work. Thanks to anyone who is helping me with this.

#2

I couldn’t find documentation on :RaycastLocal what is this?

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#3

Its a function of EditableMesh, i tried to use Simple Raycast but as the editable mesh is a beta function and the hitbox dont update when i create new vertex, i tried to use RayCastLocal that uhh is supose to do what im trying to

#4

Can you send me some documentation on it

#5

Yes, here

RaycastLocal Documentation

#6

Just wanted to say that i figured out, it is beutifull it works perfectly as i wanted, thanks for everyone that was helping tho.

#7

lol nice change it to solved and explain the solution so other ppl looking for this can find it

1 Like