dxDraw scaling and postioning.

[benwilkins]

Hey, basically, I want to display the license plate above cars, as I have right now, it isnt above the car at all times. If I drive a little away from a car, the text goes way up high.

I am wondering how I can scale it, so that the position is always locked right above the cars roof at whatever distance you are away from the car, and the further away from the car, the smaller it is?

Thanks, much appreciated

This is what I have so far.

local px, py, pz = getElementPosition(localPlayer) 
    -- vehicles 
    for key, value in ipairs(getElementsByType("vehicle")) do 
        if isElementStreamedIn(value) and (isElementOnScreen(value))  then 
            local x, y, z = getElementPosition(value) 
            local plateText = getVehiclePlateText ( value ) 
            if (isLineOfSightClear(px, py, pz, x, y, z, true, false, false, true, false, false, true)) then 
                local tx, ty = getScreenFromWorldPosition(x, y, z, 5000, false) 
                 
                if (tx) then 
                      
                     
                    local size = dxGetTextWidth(getVehicleName(value), 1, "bankgothic") + 170 
             
                    dxDrawText(plateText, tx, ty, tx, ty-200, tocolor(10, 255, 10, 160), 0.6, "bankgothic", "center", "center") 
                end 
            end 
        end 
    end 

[xXMADEXx]

This is what I use to set the scale:

local scale = 2 
local dist = getDistanceBetweenPoints3D ( px, py, pz, x, y, z ) 
scale = scale * ( ( 3- dist ) / 3) 

[benwilkins]

I tried that, but it just makes them huge when you walk away

http://puu.sh/3fHz4.jpg