TrackFlow Pro - Curvature-Aware Track Designer

Build paths that feel as good as they look

Most spline tools begin with control points and ask you to shape the curve between them.

TrackFlow Pro gives you another way to think about path design: curvature.

Create straight arcs, conventional splines, and smooth transition curves while controlling how the path bends and changes along its length. This makes TrackFlow Pro especially suited to geometry where the progression of a corner matters, not just its final shape.

Curvature driven design

TrackFlow Pro is built for applications such as:

• Race tracks and driving circuits
• Roller coasters
• Roads and highways
• Railways and guided systems
• Procedural tracks and pathways
• Pipes, tunnels, conveyors and other spline based geometry.

Instead of treating every path as a sequence of arbitrary control points, TrackFlow can work with geometric properties such as curvature, torsion, arc length, and orientation.

Clothoid / Euler spirals

TrackFlow Pro supports clothoid transition curves, where curvature changes consistently along the path.

Rather than transitioning instantly from a straight into a constant radius corner, a clothoid gradually increases the curvature as the path enters the turn.

These types of curves are used extensively in the real world for roadways, race tracks and roller coasters, where the transitional curve minimizes the force felt by the rider.

Design in real path distance

TrackFlow's underlying curve system is built around arc length.

That means operations along the curve can be expressed naturally in distance:

• Sample the path every 2 meters
• Place objects at regular intervals
• Begin a transition 50 meters down the track
• Generate evenly spaced geometry
• Evaluate position and orientation at a known distance along the path

This provides a predictable foundation for procedural generation and path-driven gameplay systems.

Orientation and Banking

A path is more than just a curve from A to B.

TrackFlow tracks the orientation along the curve at each point, allowing objects to follow the path consistently in 3D.

You can also apply transformations to the roll along the curve, using the built in roll frame modifiers, or by creating your own through scripting.

Use this for advanced control over:

• Banking
• Camera orientation
• Prop alignment
• Mesh extrusions

Procedural Mesh Generation

TrackFlow comes built in with mesh extrusion features for fast design iterations.

There are some built in shapes like pipes and roads, there is also a custom extrusion profile feature, which lets you draw the extrusion profile directly in the inspector window.

Prefab Placement

Distribute prefabs along a path using its position and orientation.

Use prefab placement for objects such as:

• Railway sleepers
• Guardrails
• Track supports
• Signs
• Lights
• Barriers
• Roadside props
• Decorative elements

Because placement operates along path distance, spacing remains predictable along curves.

More than one kind of curve

TrackFlow is powered by ArcFrame, a general-purpose C# curve geometry system.

Its architecture supports both curvature-defined geometry and familiar spline representations, allowing different curve types to participate in a common path workflow.

The result is a system designed around the geometry of the finished path rather than a single spline representation.

Built for Unity workflows

TrackFlow Pro includes editor tooling for authoring, inspecting, visualizing, and generating content directly inside Unity.

Use the visual tools for level design, or access the underlying curve system from C# for procedural and runtime applications.

Don't just draw where the track goes, design how it flows.