Road Marking Generator 3ds Max

Use a Spline + Array + ShapeMerge for simple straight lines.

Creating road markings (dashed lines, arrows, crosswalks) manually is inefficient because it involves repetitive geometry placement along a spline. A true "generator" implies a system where you draw a path, and the system handles the topology, deformation, and distribution automatically.

There are three primary tiers to building this in 3ds Max: The Native Spline Method, the Geometry Boolean Method, and the Data-Driven Smart Method.

This is the most flexible for generating multiple markings (center line, edge lines, zebra crossings, arrows).

Example script (basic dashed line):

fn createDashedLine startPt endPt dashLength gapLength width =
(
    dir = normalize (endPt - startPt)
    totalLen = distance startPt endPt
    seg = dashLength + gapLength
    numDashes = floor (totalLen / seg)
for i = 0 to numDashes-1 do
(
    tStart = i * seg
    p1 = startPt + (dir * tStart)
    p2 = p1 + (dir * dashLength)
-- Create box for dash
    b = box length:dashLength width:width height:0.05
    b.position = (p1 + p2)/2
    b.dir = dir
)

)
-- Usage
createDashedLine [0,0,0] [1000,0,0] 200 50 20

For arrows (turn arrows, straight, etc.), pre-model them and instance along spline using instanceMgr. road marking generator 3ds max

Generic scripts struggle with "STOP" or "AHEAD ONLY" arrows.

-- DashLineGenerator.ms (simplified)
fn createDashedLine laneSpline dashLen gapLen width height zOffset =
(
  seg = splineShape width:width length:dashLen
  totalLen = getPathLength laneSpline
  pos = 0.0
  lst = #()
  while pos < totalLen do
  (
    t = pos/totalLen
    p = getPointOnSpline laneSpline t
    tan = getTangentOnSpline laneSpline t
    s = copy seg
    s.pos = [p.x, p.y, p.z + zOffset]
    s.rotation = (quatFromDir tan [0,0,1])
    add lst s
    pos += dashLen + gapLen
  )
  delete seg
  return lst
)

(Adapt with robust spline sampling and proper error checks.)

Assumption: 3ds Max 2022+; basic familiarity with splines, modifiers, and MAXScript.

MAXScript example (core loop, simplified):

-- Inputs
laneSpline = $LaneSpline
seg = $MarkSegment
dashLen = 1.5
gapLen = 3.0
width = 0.15
-- Clean previous
for o in ($Markings*) do delete o
param = 0.0
splineLen = getPathLength laneSpline
while param < splineLen do
(
  t = param / splineLen
  pos = getPointOnSpline laneSpline t
  tan = getTangentOnSpline laneSpline t
  newSeg = copy seg
  newSeg.pos = pos
  newSeg.rotation = (quatFromDir tan [0,0,1])
  scale newSeg (point3 width 1 1)
  newSeg.name = "Marking_"+(formattedPrint param)
  param += (dashLen + gapLen)
)

Notes: Use more robust spline sampling functions (splineOps) and align to road surface normals. Use a Spline + Array + ShapeMerge for

Several scripts are available on platforms like ScriptSpot or Gumroad. A popular free script uses a "Marker" helper object.