User Waypoint Position Skeleton

UserWaypointSkeleton.lua

local distances = {}; -- Array of 4 distances to TL, TR, BR, BL.

local function GetPointToQuery(index)
    local mapID = C_Map.GetBestMapForUnit("player");
    local x, y;

    if index == 1 then
        x, y = 0, 0;
    elseif index == 2 then
        x, y = 1, 0;
    elseif index == 3 then
        x, y = 1, 1;
    else
        x, y = 0, 1;
    end

    return UiMapPoint.CreateFromCoordinates(mapID, x, y);
end

local function QueryNextPoint()
    local point = GetPointToQuery(#distances + 1);

    C_Map.SetUserWaypoint(point);
end

local function BeginPositionQuery()
    wipe(distances);
    QueryNextPoint();
end

local function OnPositionQueryFinished()
    -- Do your math magic here with the four distance values
    -- to the top-left, top-right, bottom-right, and bottom-left
    -- corners in the `distances` array.
end

local function OnSuperTrackingChanged()
    table.insert(distances, C_Navigation.GetDistance());
    C_SuperTrack.SetSuperTrackedUserWaypoint(false);

    if #distances == 4 then
        OnPositionQueryFinished();
    else
        QueryNextPoint();
    end
end

local function OnUserWaypointUpdated()
    C_SuperTrack.SetSuperTrackedUserWaypoint(true);
end

local function OnEvent(_, event)
    if event == "USER_WAYPOINT_UPDATED" then
        OnUserWaypointUpdated();
    elseif event == "SUPER_TRACKING_CHANGED" then
        OnSuperTrackingChanged();
    end
end


local frame = CreateFrame("Frame");
frame:RegisterEvent("SUPER_TRACKING_CHANGED");
frame:RegisterEvent("USER_WAYPOINT_UPDATED");
frame:SetScript("OnEvent", OnEvent);

C_Timer.NewTicker(2, function()
    BeginPositionQuery();
end);