CADvisor Consulting LLC - Advanced CAD Solutions & RapidSurf Technology

Why Choose RapidSurf?

Five game-changing advantages: Complete CAD workflow from concept to manufacturing

🚀

Proprietary Mathematical Kernel

Not based on commercial third-party kernel libraries

RapidSurf features a custom-built CAGD (Computer-Aided Geometric Design) kernel developed from scratch. This gives us:

Fast & Flexible: Optimized algorithms without legacy overhead
Full Control: Direct access to core mathematics for custom solutions
Rapid Innovation: Add new features without third-party dependencies
Adaptable Architecture: No bloated libraries—just what you need

While competitors license expensive commercial kernel libraries, we built ours. You get the benefits: faster performance, lower cost, greater flexibility.

✨

Class-A Surfacing Specialist

Designed specifically for high-quality surface modeling

RapidSurf is purpose-built for Class-A surfacing—the gold standard in automotive, aerospace, and industrial design:

G2 Continuity: Curvature-continuous blending for flawless surfaces
NURBS Excellence: Industry-standard precision with advanced fairness tools
Intuitive Workflow: Complex surface operations made simple
Real-time Visualization: See curvature analysis and quality in real-time

Most CAD tools are solid modelers with surface tools bolted on. RapidSurf does surfaces first, surfaces best.

💎

Affordable for Everyone

Professional power without enterprise pricing

Commercial CAD software costs $3,000-$10,000+. RapidSurf brings professional Class-A surfacing within reach:

Business License: $599 one-time perpetual license
Student/Educator: $199 for academic use
No Subscriptions: Pay once, own forever
Full Features: No crippled "lite" versions—you get everything

Perfect for small businesses, freelancers, startups, and students who need professional tools without breaking the bank.

🔄

Reverse Engineering

Transform scans, meshes, and point clouds into editable CAD surfaces

RapidSurf provides professional reverse engineering capabilities for converting physical or digital models into parametric surfaces:

Mesh-to-Surface: Convert quad-dominant meshes to G1 continuous B-spline surface patches
Point Data Interpolation: Create surfaces that pass through 3D point sets from scans or measurements
Point Data Fitting: Best-fit surface approximation for noisy or dense point data with tolerance control
Quality Analysis: Zebra stripe visualization to verify surface smoothness and continuity

Bridge the gap between physical parts, 3D scans, mesh models, and parametric CAD. Perfect for reverse engineering, scan-to-CAD workflows, and converting digital sculpts to manufacturable surfaces.

🔷

Advanced Meshing

Create, edit, and convert meshes for 3D printing, simulation, and manufacturing

RapidSurf delivers professional meshing capabilities that complete your design-to-manufacturing workflow:

Mesh Creation: Import OBJ/STL files or generate high-quality meshes from NURBS surfaces
Mesh Editing: Advanced smoothing for individual vertices or entire mesh with quality optimization
Topology Conversion: Intelligent triangle↔quad conversion with planarity and aspect ratio control
Downstream Ready: Export production-ready meshes for 3D printing, FEA simulation, animation, and CNC machining

Complete the loop: design with Class-A surfaces, reverse engineer from scans, and generate optimized meshes for every stage of product development and manufacturing.

🎯 Currently in Beta Testing

RapidSurf is in active beta development. The 30-day free trial gives you full access to all features. Full commercial licenses will be available soon—join our beta program now to get early access and help shape the future of affordable Class-A surfacing software.

Try Beta Now - 30 Days Free

RapidSurf Professional Capabilities

Complete CAD platform: Class-A surface modeling • Reverse engineering • Advanced meshing for end-to-end product development workflows

🔄 Mesh-to-Surface Conversion

Convert quad-dominant mesh models into G1 continuous B-spline surface models. Perfect for reverse engineering, scan data processing, and converting polygon models to manufacturable parametric surfaces.

🎯 Quad-Dominant Mesh to G1 B-spline Surfaces

RapidSurf automatically converts quad-dominant meshes into smooth, tangent-continuous B-spline surface patches. This powerful reverse engineering capability transforms polygon models from 3D scanning, mesh modeling software, or other sources into editable parametric surfaces suitable for manufacturing and further CAD operations.

✓ Automatic Topology Analysis: Intelligent detection and processing of quad-dominant mesh structure
✓ G1 Continuity: Tangent-continuous transitions between adjacent surface patches
✓ High-Quality Fitting: Precise surface approximation with minimal deviation from original mesh
✓ Zebra Stripe Analysis: Built-in quality verification to ensure smooth, fair surfaces

📸 Real-World Conversion Examples

See the power of mesh-to-surface conversion with these production-quality results. Each example shows the original mesh model, the converted B-spline surfaces, and zebra stripe analysis for quality verification.

Stanford Bunny Model

Complex organic shape with smooth curvature transitions demonstrates excellent surface quality and G1 continuity across patches.

Original Mesh Model

B-spline Surface Result

Zebra Stripe Analysis

Smooth zebra stripes confirm excellent surface quality and G1 continuity

Automotive Part Model

Complex automotive geometry with mixed curvature regions showcases the algorithm's ability to handle challenging industrial shapes.

Original Mesh Model

B-spline Surface Result

Zebra Stripe Analysis

Continuous stripes across panel transitions verify G1 quality

Human Head Model

Highly detailed organic form with subtle surface variations demonstrates precision fitting and smooth continuity preservation.

Original Mesh Model

B-spline Surface Result

Zebra Stripe Analysis

Clean zebra patterns confirm high-quality surface reconstruction

🔷 Meshing Capabilities

Professional mesh creation, manipulation, and conversion tools for advanced surface modeling workflows. Import meshes, create meshes from surfaces, and convert between triangle and quad topologies.

🚀 Next Beta Release: These meshing capabilities will be available in the next beta test version. For more information, please contact us directly.

🎯 Mesh Creation & Import

Import OBJ/STL Files

Load triangle and quad meshes from industry-standard OBJ and STL file formats for further processing

Mesh from Surface

Generate high-quality meshes from Class-A NURBS surfaces with adaptive tessellation and curvature control

⚙️ Mesh Manipulation & Editing

Show/Hide Vertices

Toggle vertex visibility for cleaner visualization and easier selection in complex meshes

Select & Smooth Vertices

Interactive vertex selection with advanced smoothing for local mesh refinement and quality improvement

Smooth Entire Mesh

Apply global advanced smoothing to entire mesh with iteration control for surface fairness optimization

🔄 Triangle ↔ Quad Mesh Conversion

Intelligent Topology Conversion

Convert between triangle and quad mesh topologies with intelligent pairing algorithms. Quad meshes are essential for high-quality B-spline surface conversion.

✓ Triangle → Quad: Greedy pairing with planarity and aspect ratio quality metrics
✓ Quad → Triangle: Multiple diagonal selection strategies for optimal triangulation
✓ Quality Control: User-adjustable thresholds for conversion quality and element shape
✓ B-spline Ready: Quad-dominant meshes convert seamlessly to G1 B-spline surfaces

Professional mesh topology optimization for reverse engineering and surface reconstruction workflows

✏️ Curve Creation

🎯 Basic Curve Primitives

Line

Create precise straight lines with start/end point or direction vector specification

Circle

Full circles with center-radius definition or three-point construction

Arc

Circular arcs with center-radius-angle or three-point methods

Ellipse

Elliptical curves with major/minor axis control and rotation

📐 Advanced Parametric Curves

Bezier Curve

Polynomial Bezier curves with interactive control point manipulation and degree control

B-spline Curve

Industry-standard B-spline curves with local control, knot vector editing, and degree specification

NURBS Curve

Non-uniform rational B-splines with weight control for representing exact conics and complex shapes

📊 Curves from Point Data

Interpolate Through Points

Create smooth curves that pass exactly through specified point sets with tangent continuity

Fit Curve to Points

Best-fit curve approximation with tolerance control for noisy or dense point data

🔗 Curves from Curves

Offset Curve

Create parallel offset curves at specified distances with corner handling options

Extend Curve

Extend curve endpoints with linear, circular, or natural extension methods

Blend Curves

Create smooth G1/G2 continuous blend curves between two existing curves

🌊 Curves from Surfaces

ISO Parametric Curves

Extract constant-parameter (U or V) curves from surface parameterization

Boundary Curves

Extract edge boundary curves from surface trim loops and parametric bounds

Section Curves

Create section curves by intersecting surfaces with cutting planes at specified positions

Intersection Curves

Compute intersection curves between two surfaces with adaptive tessellation

🏗️ Surface Creation

📦 Basic Surface Primitives

Plane

Planar surfaces with origin, normal vector, and size specification

Sphere

Spherical surfaces with center, radius, and parameterization control

Cylinder

Cylindrical surfaces with axis, radius, and height specification

Cone

Conical surfaces with apex, axis, base radius, and height control

📊 Surfaces from Point Data

Interpolate Through Points

Create smooth surfaces that pass exactly through specified 3D point sets

Constrained Fit

Surface approximation that interpolates specified points while fitting remaining point cloud data

Best Fit Surface

Advanced point cloud surfacing with adaptive control point placement and fairness optimization

🌀 Single Profile Surfaces

Extrude Surface

Linear extrusion of profile curves along direction vectors with distance control

Revolve Surface

Surfaces of revolution from profile curves with axis specification and angle range

Pipe Surface

Constant or variable radius pipe surfaces swept along spine curves with cross-section control

🕸️ Multi-Curve Network Surfaces

Loft Surface

Smooth blending between multiple profile curves with tangent continuity and guide curve support

Ruled Surface

Connect two boundary curves with straight ruling lines to create developable surfaces

Sweep Surface

Sweep profile curves along one or more path curves with scaling and rotation control

Through Curve Network

Create smooth surfaces through intersecting U and V curve networks with optimized fairness

🔺 Advanced Surface Patches

Coons Patch

Classic Coons patch with four boundary curves and optional G1/G2 continuity constraints

N-Sided Fill Surface

Fill N-sided boundary regions with smooth, high-quality surfaces for complex topology modeling

🔗 Blending & Filleting

G2 Blend Surface

Curvature-continuous blending between two NURBS surfaces with automatic position, tangent, and curvature matching at both boundaries, plus user-adjustable tangent scaling for precise control

Rolling Ball Blend

Constant radius fillet surfaces using rolling ball methodology with multiple ball radius support

✂️ Editing Operations

📏 Curve Operations

Split Curve

Split curves at parameter values or intersection points into separate segments

Trim Curve

Trim curves with boundaries or cutting objects with parameter range specification

Extend Curve

Extend curve endpoints using linear, arc, or smooth continuation methods

Offset Curve

Create parallel offset curves with corner blending and self-intersection handling

Join Curves

Merge multiple curves into composite curves with tolerance and continuity options

Reverse Curve

Reverse curve parameterization direction while maintaining geometric shape

Project Curve

Project curves onto surfaces with closest point or normal direction projection

Rebuild Curve

Rebuild curves with new control point count and degree while preserving shape within tolerance

Simplify Curve

Reduce control point count while maintaining geometric accuracy within specified tolerance

Fair Curve

Smooth curve curvature distribution using fairness optimization algorithms

🏔️ Surface Operations

Split Surface

Split surfaces with curves or isoparametric lines into multiple surface patches

Trim Surface

Create trimmed surfaces with boundary curves defining visible/invisible regions

Extend Surface

Extend surface edges with linear, circular, or smooth continuation methods

Offset Surface

Create offset surfaces at specified distances with normal vector offsetting

Surface Stitching

Stitch multiple surfaces together with gap closing and continuity enforcement

Reverse Surface

Flip surface normal direction or swap U/V parameterization

Rebuild Surface

Rebuild surfaces with new control point count and degrees while preserving geometry

Simplify Surface

Reduce surface complexity by optimizing control point distribution within tolerance

Fair Surface

Optimize surface fairness using curvature-based energy minimization

🎯 Interactive Editing & Transformation

Control Point Editing and Local Transformation

Comprehensive curve and surface modification through direct manipulation. Control Point Editing: Directly manipulate control points by left-clicking to select and right-click dragging to move them in 3D space for intuitive shape refinement. Local Transformation: Perform precise Move, Rotate, and Scale operations on selected curves and surfaces using interactive local coordinate frames with axis-constrained transformations for accurate geometric positioning and modification.

🔬 Quality Analysis

📐 Curvature Analysis

Curvature Comb

Visual curvature analysis with comb display showing curvature magnitude and distribution

🦓 Surface Quality

Zebra Stripe Analysis

Reflection-based surface quality analysis with adjustable stripe patterns and lighting

Technical Excellence

🎯 Precision & Quality

Industry-standard NURBS mathematics
Tolerance-based geometric operations
G0, G1, G2 continuity control
Numerical stability optimization

⚡ Performance & Efficiency

C++ computational kernel with Eigen optimization
Real-time 3D visualization
Interactive parameter adjustment
Memory-efficient algorithms

🔧 Professional Workflow

Comprehensive editing tools
Keep original option for all rebuild operations
Parametric constraint handling
Quality analysis and validation

HowTo Guide for RapidSurf

Step-by-step tutorials for essential features and workflows

Selection Methods for Curves and Surfaces

RapidSurf provides two flexible methods for selecting and picking curves and surfaces, allowing you to choose the most convenient approach for your workflow.

Method 1: Selection from Entity List: Access the entity dropdown list populated from the system storage. Simply click to expand the list and select the desired curve or surface from the available entities. This method is ideal when you know the entity name or want to select from a categorized list.
Method 2: Direct Viewport Picking: Pick entities directly from the 3D viewport by left-clicking on the desired curve or surface. This visual selection method is intuitive and allows you to select exactly what you see in the scene.

Important Note for Viewport Picking

Control Points Display: When control points or control nets are visible in the viewport, it can be difficult to accurately pick curves and surfaces directly. The control points may interfere with entity selection.

Recommended Practice: Before performing "Pick from Viewport" operations, turn off the control points display by unchecking the "Show Control Points" option in the Display section of the right panel in the Model Explorer. This will ensure clean and accurate entity selection from the viewport.

Control Point Editing for Surfaces and Curves

Control point editing allows you to modify the shape of surfaces and curves by directly manipulating their control points. This powerful feature provides intuitive control over geometric shapes for precise design refinement.

Select the Control Point: Left-click on the control point you wish to edit to select it. The selected control point will be highlighted, indicating it's ready for manipulation.
Drag to Edit: Right-click and hold on the selected control point, then drag it to the desired position to adjust the shape of the surface or curve. You'll see real-time updates as you move the control point.
Release and Finish: Release the right mouse button when you have finished dragging the control point to its new position. The geometry will update to reflect the new control point location.
End Editing Mode: Right-click on an empty space in the viewport to deselect the control point and exit editing mode, finalizing your changes.

Local Transformation

Local transformation enables you to move, rotate, or scale selected objects using an interactive local coordinate frame. This feature provides precise control over object positioning and orientation in 3D space.

Select the Object: Left-click on the curve or surface object you want to transform to select it. The selected object will be highlighted.
Choose Transformation Action: Click on the desired transformation action (Move, Rotate, or Scale) from the toolbar to activate that transformation mode.
Display Local Frame: Click the selected object again to display the local coordinate frame, which shows the X, Y, and Z axes for precise transformation control.
Pick the Axis: Select the transformation direction by clicking on the desired axis (X, Y, or Z) of the local frame. The selected axis will be highlighted.
Move the Object: Left-click and hold on the selected axis, then drag to move, rotate, or scale the object along that direction. The transformation will update in real-time.
Finish Transformation: When finished, click the "Clear Selection" and "Clear Mode" buttons to exit the transformation mode and finalize your changes.

Show Surface UV Direction and Curve Start/End Direction

Display or hide the surface UV/Normal frame and curve start-to-end direction to better understand object orientation and parameterization. This visualization helps with surface analysis and boundary matching operations.

Access Model Explorer: Open the Model Explorer panel to view the hierarchical list of all objects (curves and surfaces) in your current project.
Right-Click Object: Right-click on the desired surface or curve object in the Model Explorer to open the context menu with display options.
Toggle Visibility: Select the "Show/Hide Surface UV/Normal Frame" option for surfaces or "Show/Hide Curve Start to End Direction" option for curves to toggle the directional display on or off. The UV frame shows the surface parameterization and normal direction, while curve direction shows the parametric flow from start to end.

Important Notes

Selection: Ensure your object is properly selected before initiating any transformation or editing operation. Selected objects are highlighted in the viewport.

Viewport Navigation: Use the viewport navigation tools (orbit, pan, zoom) to adjust your perspective for better control during editing operations. Right-click and drag to orbit, middle-click to pan, and scroll to zoom.

Download RapidSurf Beta - Free 30-Day Trial

Experience professional Class-A surface modeling with full functionality

📋 Platform Feature Availability

Mesh-to-Surface Conversion: Currently available in Linux version only. The Windows version includes all Class-A surfacing features but does not yet include the quad-mesh to surface conversion capability.

Note: Linux version provides complete functionality including mesh-to-surface conversion. Windows mesh conversion update will be available soon.

30-DAY FREE TRIAL

Try RapidSurf Today

Get instant access to all professional surface modeling features. No credit card required.

Version: 2.0.0 Beta

Platform: Linux / Windows

Size: ~500 MB

License: 30-day trial (hardware-bound)

⬇ Download for Linux

Verify checksums (SHA256)

⬇ Download for Windows

Download Windows checksums

Quick Installation

Linux (3 Steps)

Download & Extract

tar -xzf RapidSurf-v2.0.0-Trial-30days-20251107.tar.gz

Install Dependencies

./install_dependencies_auto.sh

Launch RapidSurf

cd RapidSurf && ./launch_rapidsurf.sh

Windows (2 Steps)

Download & Extract

Extract RapidSurf-Windows-Distribution.zip to a folder

Launch RapidSurf

Double-click RapidSurf.exe or run launch_rapidsurf.bat

Trial Includes:

✓ Full functionality for 30 days
✓ All NURBS curve and surface tools
✓ Advanced surface creation (Coons, Loft, Sweep, Through Curve Network)
✓ G2 continuity blending
✓ Mesh-to-Surface conversion (quad-dominant to G1 B-spline) - Linux only
✓ Professional 3D visualization with zebra stripe analysis
✓ Complete documentation included

System Requirements

Linux

Minimum

Ubuntu 20.04 LTS or equivalent
4GB RAM
OpenGL 3.3+ graphics
X11 display server
1GB disk space

Windows

Minimum

Windows 10 64-bit
4GB RAM
OpenGL 3.3+ graphics
Visual C++ Redistributable
1GB disk space

About the Trial License

The 30-day trial license is hardware-bound to your machine and provides full access to all RapidSurf features. After the trial expires, contact us for commercial licensing options.

Note: The trial cannot be reset or transferred to another machine. Each machine is eligible for one 30-day trial.

Complete CAD Platform: From Design to ManufacturingClass-A Surfacing • Reverse Engineering • Advanced Meshing

Why Choose RapidSurf?

Proprietary Mathematical Kernel

Class-A Surfacing Specialist

Affordable for Everyone

Reverse Engineering

Advanced Meshing

🎯 Currently in Beta Testing

RapidSurf Professional Capabilities

🔄 Mesh-to-Surface Conversion

🎯 Quad-Dominant Mesh to G1 B-spline Surfaces

📸 Real-World Conversion Examples

Stanford Bunny Model

Automotive Part Model

Human Head Model

🔷 Meshing Capabilities

🎯 Mesh Creation & Import

Import OBJ/STL Files

Mesh from Surface

⚙️ Mesh Manipulation & Editing

Show/Hide Vertices

Select & Smooth Vertices

Smooth Entire Mesh

🔄 Triangle ↔ Quad Mesh Conversion

Intelligent Topology Conversion

✏️ Curve Creation

🎯 Basic Curve Primitives

Line

Circle

Arc

Ellipse

📐 Advanced Parametric Curves

Bezier Curve

B-spline Curve

NURBS Curve

📊 Curves from Point Data

Interpolate Through Points

Fit Curve to Points

🔗 Curves from Curves

Offset Curve

Extend Curve

Blend Curves

🌊 Curves from Surfaces

ISO Parametric Curves

Boundary Curves

Section Curves

Intersection Curves

🏗️ Surface Creation

📦 Basic Surface Primitives

Plane

Sphere

Cylinder

Cone

📊 Surfaces from Point Data

Interpolate Through Points

Constrained Fit

Best Fit Surface

🌀 Single Profile Surfaces

Extrude Surface

Revolve Surface

Pipe Surface

🕸️ Multi-Curve Network Surfaces

Loft Surface

Ruled Surface

Sweep Surface

Through Curve Network

🔺 Advanced Surface Patches

Coons Patch

N-Sided Fill Surface

🔗 Blending & Filleting

G2 Blend Surface

Rolling Ball Blend

✂️ Editing Operations

📏 Curve Operations

Split Curve

Trim Curve

Extend Curve

Offset Curve

Join Curves

Reverse Curve

Complete CAD Platform: From Design to Manufacturing
Class-A Surfacing • Reverse Engineering • Advanced Meshing