Ok, so I am trying to render a 3D world on a GUI from a 2D map with parts. And I am trying to render it with raycasting.
But there are some very unusual behaviors with the rays being casted.
It appears that there is nothing wrong with my RayOrigin and RayDirection values, but more with the rays themselves:
Visualizing the ray’s Origin and Direction:
Visualizing the rays:
Can someone explain?
Raycast project.rbxl (33.0 KB)
local Gui = script.Parent
local MainFrame = Gui:WaitForChild("MainFrame")
local Canvas = MainFrame:WaitForChild("Canvas") -- Our container for the frames
local RS = game:GetService("RunService")
local CameraPart = workspace:WaitForChild("CameraPart") -- The player
local LevelWorkspace = workspace:WaitForChild("LevelWorkspace") -- The 2D map
local RenderDistance = 100
local FieldOfView = 70
local ViewDistance = 30 -- Fog?
local Resolution = 100 -- the columns. Can run up to 60FPS from 0-200 frames/columns
local function GenerateFrames() -- Creates all the frames that will be used
for i = 1, Resolution do
local Frame = Instance.new("Frame")
Frame.LayoutOrder = i
Frame.Name = "Frame" .. i
Frame.BorderSizePixel = 0
Frame.Size = UDim2.fromScale(1/Resolution, 1)
Frame.Parent = Canvas
end
end
local function ClearCanvas() -- Clears any old frames
for i, Frame in ipairs(Canvas:GetChildren()) do
if Frame:IsA("GuiObject") then
Frame:Destroy()
end
end
end
local function UpdateFrames() -- Renders the picture
local Count = -Resolution/2
for i, Frame in ipairs(Canvas:GetChildren()) do
if Frame:IsA("GuiObject") then
local Params = RaycastParams.new()
Params.FilterType = Enum.RaycastFilterType.Whitelist
Params.FilterDescendantsInstances = LevelWorkspace:GetChildren()
local ViewRayOrigin = CameraPart.CFrame.Position
local ViewRayDirection = (CameraPart.CFrame * CFrame.new((Count * FieldOfView) / Resolution, 0, -RenderDistance)).Position
local ViewRay = workspace:Raycast(ViewRayOrigin, ViewRayDirection, Params)
if ViewRay and ViewRay.Instance and ViewRay.Instance:IsA("BasePart") then
--print(ViewRay.Instance)
--print(ViewRay.Position)
--print(Count)
local Distance = (ViewRayOrigin - ViewRay.Position).Magnitude
Frame.BackgroundColor3 = ViewRay.Instance.Color
Frame.BackgroundTransparency = 1 * (Distance / ViewDistance)
Frame.Size = UDim2.fromScale(1 / Resolution, 1 / Distance)
--local DebugLaser = Instance.new("Part") -- Useful for visualizing the rays
--DebugLaser.Anchored = true
--DebugLaser.Size = Vector3.new(0.2, 0.2, Distance)
--DebugLaser.CFrame = CFrame.new(ViewRayOrigin, ViewRay.Position) * CFrame.new(0, 0, -Distance/2)
--DebugLaser.Parent = workspace
Count = Count + 1
end
end
end
end
ClearCanvas()
GenerateFrames()
UpdateFrames()
CameraPart.Changed:Connect(UpdateFrames) -- Render the picture when the player moves (not good if your world has moving objects)
--RS.RenderStepped:Connect(function() -- Always render the picture
--UpdateFrames()
--end)
