sketchUcation

Smart Spline: Organic flow for professional workflows. Draw smooth 3D curves instantly. Zero Interface, Zero Configuration.

Description: Smart Spline is the missing link for fluid, organic modeling in SketchUp. Designed by Atelier Createur Lab for architects and makers, it removes the technical friction between your creative intent and 3D precision.

Key Professional Benefits:

Zero UI Philosophy: No popup windows or complex settings blocking your view. Draw directly in the 3D viewport.

Live Prediction: An intelligent orange guide predicts the path in real-time, allowing you to see the curvature before you click.

Smart Topology: Our algorithm automatically handles segmentation, creating smooth curves that remain lightweight for your model.

3D Native: Perfect for stair handrails, complex cabling, terrain contours, or organic furniture.

The "Atelier" Vision: Founded by a former Aerospace Engineer turned Architect, Atelier Createur Lab builds tools that automate tedious tasks. Smart Spline is the foundation of an upcoming ecosystem, including tools like Smart Tube to instantly turn these paths into intelligent structures.

1. Drawing & Snapping

Click to Anchor: Left-click anywhere to place a control point. The curve passes through every point using a Catmull-Rom algorithm, ensuring a predictable path without manual tangent handles.

Smart Inference: The tool respects SketchUp's native inference engine. Snap to vertices, edges, or faces effortlessly.

1. Finishing the Curve

Open Curve: Double-click on your last point or press Enter to validate the drawing.

Closed Loop: Click once on your starting point to automatically close the loop and weld the geometry.

1. Editing & Safety Net

Backspace to Undo: Made a mistake? Press Backspace to remove the last point. You can press it multiple times.

⚠️ Workflow Note: Do not use Ctrl+Z while drawing. Because the curve is generated in real-time, Ctrl+Z will cancel the entire tool operation. Use Backspace instead.

1. Adaptive Segmentation The tool automatically adds more segments where the curve is tight and fewer where it is straight. This ensures a high-quality visual result while keeping your file size optimized.

1. Concept & Algorithm Smart Spline is built on the Catmull-Rom spline algorithm, ensuring that the generated curve passes exactly through every control point you define. This mathematical approach provides a more intuitive experience for designers compared to traditional Bezier curves, as it eliminates the need for managing tangent handles.

2. Comprehensive Feature Set

Zero-UI Interaction: All interactions happen within the 3D viewport to maintain focus.

Intelligent Orange Guide: A real-time predictive path shows the curvature and smoothing before the point is placed.

Adaptive Topology: The tool automatically calculates segment length based on curvature density, optimizing the polygon count without sacrificing smoothness.

Smart Inference Engine: Full compatibility with SketchUp’s native inference system (Endpoint, Midpoint, On Face, On Edge).

1. Advanced Controls & Shortcuts

Placement: Left-Click.

Undo Point: Backspace (Step back through your path history).

Finish Open Curve: Double-Click or Enter.

Close Loop: Click the first red control point.

Cancel Tool: Escape.

1. Technical Specifications

Compatibility: SketchUp 2022 to 2026+.

OS: Windows and Mac.

Price: Free for commercial use.

1. Support & Learning Center For detailed video tutorials, use cases, and technical support, please visit our official Learning Center:

Initial Release (v1.0.0)

First public release of Smart Spline.

Includes the Smart Spline drawing tool.

Includes the integrated Help & Info dashboard.