add gs

RCCService2020/ExtraContent/LuaPackages/UGCValidationImpl/validation/validateHandleSize.lua

@@ -0,0 +1,59 @@
+local UGCValidationService = game:GetService("UGCValidationService")
+
+local root = script.Parent.Parent
+local valueToString = require(root.util.valueToString)
+
+local MARGIN_OF_ERROR = 0.1
+
+local function validateHandleSize(isAsync, instance)
+	-- these are guaranteed to exist thanks to validateInstanceTree being called beforehand
+	local handle = instance.Handle
+	local mesh = handle:FindFirstChildOfClass("SpecialMesh")
+
+	local success, verts = pcall(function()
+		if isAsync then
+			return UGCValidationService:GetMeshVerts(mesh.MeshId)
+		else
+			return UGCValidationService:GetMeshVertsSync(mesh.MeshId)
+		end
+	end)
+
+	if not success then
+		return false, { "Failed to read mesh" }
+	end
+
+	local minX, maxX = math.huge, 0
+	local minY, maxY = math.huge, 0
+	local minZ, maxZ = math.huge, 0
+
+	for i = 1, #verts do
+		local vert = verts[i] * mesh.Scale
+		minX = math.min(minX, vert.X)
+		minY = math.min(minY, vert.Y)
+		minZ = math.min(minZ, vert.Z)
+		maxX = math.max(maxX, vert.X)
+		maxY = math.max(maxY, vert.Y)
+		maxZ = math.max(maxZ, vert.Z)
+	end
+
+	local meshSize = Vector3.new(
+		maxX - minX,
+		maxY - minY,
+		maxZ - minZ
+	)
+
+	-- allow handle.Size to be within MARGIN_OF_ERROR of meshSize or larger
+	-- this is necessary since we're comparing floats
+	-- the size only needs to be a rough equivalent for thumbnailing
+	if handle.Size.X + MARGIN_OF_ERROR < meshSize.X
+	or handle.Size.Y + MARGIN_OF_ERROR < meshSize.Y
+	or handle.Size.Z + MARGIN_OF_ERROR < meshSize.Z then
+		return false, {
+			string.format("Accessory Handle size should be at least the size of the mesh ( %s )", valueToString(meshSize))
+		}
+	end
+
+	return true
+end
+
+return validateHandleSize