Smart Slope Generator draws engineering slope hatching—the tick, batter, and embankment marks used on grading, earthworks, and road design drawings—between any two lines you pick in Autodesk® AutoCAD® or Autodesk® Civil 3D®.

Pick a top line (crest or shoulder) and a bottom line (toe). The plugin stations, one of them, map every station to the other and draw the slope pattern between them. It works with lines, polylines, 3D polylines, arcs, splines, ellipses, and Civil 3D feature lines in both 2D and 3D.

WHAT IT DOES

- Slope hatching between any two curves, at a spacing you choose

- Long/short tick patterns, with adjustable short-stroke length Perpendicular to the top line or to the bottom line—you choose which line drives the spacing, and the plugin tells you which one it is using

- Automatic cut/fill detection with separate colors and layers, plus a generic style when no elevation difference exists

- Background hatch mask that follows the real vertices of your geometry; corners stay sharp, and curves stay curved.

- Triangular tapered bases, drawn as true 2D or 3D geometry

- 3D slope lines that follow the elevations of the source curves

- Live preview that is the real engine output—what you see is what is drawn

INTERACTIVE CORNER ADJUSTMENT

Nearest-point mapping is right almost everywhere, but at a sharp inside corner slope, lines naturally converge. Drag the on-screen preview to spread. them out again exactly as you want them. Your adjustment always wins over the automatic rule, and the background mask follows the strokes you adjusted.

BUILT FOR REAL DRAWINGS

- Entire alignment or a picked chainage range, switchable at any prompt

- Runs in a loop—draw slope after slope until you press Escape

- Per-slope Undo inside the command

- Layer control per section, with ByLayer support and an explicit override when you want to restyle an existing layer

- Metric and imperial: units and sensible defaults follow the drawing's INSUNITS setting

- Objects can be grouped and are placed on layers you control

VERSION 2.0

Version 2.0 is a full rewrite of the geometry engine. Slope lines now gather. correctly into inside corners, closed shapes such as ponds and building pads

Draw all the way round; the background mask follows real vertices. ByLayer and color override were added, and the drawing loop was redesigned so the remembered mode simply runs instead of asking every time.

FREE

Smart Slope Generator is free, with no license key, no activation, and no time limit. It will remain free.

Compatible with AutoCAD and Civil 3D 2024, 2025, 2026, and 2027 (Windows 64-bit).

Developed by Beka Tchigladze, BIM Engineer and C#/.NET automation developer, for Green Road Group—a civil engineering practice that uses this tool on its own road and infrastructure projects.