Help Needed With Visualizing a Raycast

Help and Feedback Scripting Support
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#1

Hello.

I am having trouble visualizing my raycast. Here is an example:


As you can see, the white visualization part is not perfectly aligned with the part projecting the ray.
image
image537×513 52.7 KB

Here is my code, any help is appreciated. Thank you.

local runService = game:GetService("RunService")

local folder = script.Parent
local reflection = folder.Reflection
local cue = folder.Cue
local aim = folder.Aim

local maxDistance = 500

runService.Heartbeat:Connect(function()
	local cueCframe = cue.CFrame
	local currentPosition = cueCframe.Position
	local currentNormal = cueCframe.RightVector
	local params = RaycastParams.new()
	params.FilterType = Enum.RaycastFilterType.Blacklist
	params.FilterDescendantsInstances = {cue, reflection, aim}
	local raycast = workspace:Raycast(currentPosition - Vector3.new(0, 0, cue.Size.X / 2), currentNormal * maxDistance, params)
	
	local aimSize = aim.Size
	local intersection = (raycast and raycast.Position or currentPosition + (currentNormal * maxDistance))
	
	currentPosition = (cue.CFrame * CFrame.new(cue.Size.X / 2, 0, 0)).Position
	
	if (raycast) then
		reflection.Transparency = 0
		
		local normal = raycast.Normal
		local reflectionNormal = (currentNormal - (2 * currentNormal:Dot(normal) * normal))
		
		aim.Size = Vector3.new(aimSize.X, aimSize.Y, raycast.Distance)
		aim.CFrame = CFrame.new(currentPosition, intersection) * CFrame.new(0, 0, -raycast.Distance / 2)
		
		reflection.CFrame = CFrame.new(intersection, reflectionNormal * maxDistance) * CFrame.new(0, 0, -2.5)
	else
		reflection.Transparency = 1
		
		aim.Size = Vector3.new(aimSize.X, aimSize.Y, maxDistance)
		aim.CFrame = CFrame.new(currentPosition, intersection) * CFrame.new(0, 0, -maxDistance / 2)
	end
end)

aim is the white visualization part, cue is the part projecting the ray, and reflection is the part visualizing the normal.

#2

I think the problem is that you forgot to use cframes to do it relative to the cue, youre moving it in world space

1 Like
#3

Thank you, I was able to make these changes to the code, and it worked!

local runService = game:GetService("RunService")

local folder = script.Parent
local reflection = folder.Reflection
local cue = folder.Cue
local aim = folder.Aim

local maxDistance = 500

runService.Heartbeat:Connect(function()
	local cueCframe = cue.CFrame
	local currentPosition = (cueCframe * CFrame.new(cue.Size.X / 2, 0, 0)).Position
	local currentNormal = cueCframe.RightVector
	local params = RaycastParams.new()
	params.FilterType = Enum.RaycastFilterType.Blacklist
	params.FilterDescendantsInstances = {cue, reflection, aim}
	local raycast = workspace:Raycast(currentPosition, currentNormal * maxDistance, params)
	
	local aimSize = aim.Size
	local intersection = (raycast and raycast.Position or currentPosition + (currentNormal * maxDistance))
		
	if (raycast) then
		reflection.Transparency = 0
		
		local normal = raycast.Normal
		local reflectionNormal = (currentNormal - (2 * currentNormal:Dot(normal) * normal))
		
		aim.Size = Vector3.new(aimSize.X, aimSize.Y, raycast.Distance)
		aim.CFrame = CFrame.new(currentPosition, intersection) * CFrame.new(0, 0, -raycast.Distance / 2)
		
		reflection.CFrame = CFrame.new(intersection, reflectionNormal * maxDistance) * CFrame.new(0, 0, -2.5)
	else
		reflection.Transparency = 1
		
		aim.Size = Vector3.new(aimSize.X, aimSize.Y, maxDistance)
		aim.CFrame = CFrame.new(currentPosition, intersection) * CFrame.new(0, 0, -maxDistance / 2)
	end
end)
1 Like