Rapid massing studies for design teams

For architecture and urban design teams evaluating many options before committing to detailed modeling.

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arxel.app/explore

Constraint-First Generation

Define boundary dimensions, target volume, and floor height. The solver finds every valid configuration—no guesswork, no wasted geometry.

Instant Diversity

Stream dozens of distinct massing options in real time. Filter by morphology and orientation to surface forms that match your vision.

Export-Ready Output

Favorite the options you like, then export OBJ files directly into Rhino, Blender, SketchUp, or any 3D tool.

How It Works

From constraints to exportable massing in four steps.

01

Set Constraints

Enter your site boundary (L × W × H), target volume, and floor height.

02

Explore

Click Explore to stream solutions. Watch valid masses appear in the 3D viewport.

03

Filter & Compare

Use morphology and orientation filters. Inspect volume, deviation, and occupancy metrics.

04

Favorite & Export

Heart the masses you want. Export as OBJ for downstream design development.

Features

Everything you need for rapid massing exploration.

Real-Time Streaming

Solutions appear as they're found—no batch waiting.

Morphology Labels

Auto-classified as Urban, Pavilion, or Monolith.

Orientation Labels

Extroverted (outward) vs. Introverted (courtyard).

Local Favorites

Persist your shortlist across sessions.

OBJ Export

One-click download of any solution.

Mobile-Friendly

Touch-optimized for on-site reviews.

Under the Hood

Powered by Google OR-Tools CP-SAT constraint solver Enforces gravity, connectivity, and volume constraints Deduplicates equivalent rotations and reflections

Built For

Architects

Exploring early-stage massing options

Urban Designers

Testing volumetric fit within site constraints

Computational Design Teams

Seeking a rapid prototyping tool

Students & Educators

Learning constraint-based generative design

Frequently Asked

What constraints does Arxel enforce?
Gravity (voxels must be supported), horizontal connectivity, and volume bounds. Optional: block repetition and boundary-length minimums.
Can I import my own site boundary?
Currently manual entry. GIS/CAD import is on the roadmap.
What export formats are available?
OBJ is the primary format. FBX and glTF are planned.
Is my data stored?
Solutions are generated on-demand, not stored server-side. Favorites are local to your browser.
How is this different from Grasshopper/Dynamo?
Arxel is purpose-built for massing exploration with no scripting. It complements parametric tools by providing valid starting points.

Ready to explore?

Generate your first massing options in under a minute.

Start Exploring