editor

Product Introduction

1. Definition: Pascal is a browser-based 3D architectural editor and digital twin platform. Technically, it is a WebGL-powered, parametric Computer-Aided Design (CAD) and Building Information Modeling (BIM) tool that operates directly in a web browser, eliminating the need for desktop software installation.
2. Core Value Proposition: It exists to democratize 3D architectural design and visualization by providing an intuitive, accessible, and collaborative online 3D editor. It solves the problem of complex, expensive, and inaccessible professional 3D modeling and BIM software, enabling instant spatial creation, editing, and presentation for a broad audience.

Main Features

1. Pascal Capture (Mobile App): A dedicated iOS application that allows users to scan physical spaces using their device's LiDAR or camera to generate instant 3D models. This feature automates the point cloud to mesh conversion process, creating a foundational digital twin for editing within the web editor.
2. Parametric SDF/CSG Modeling Engine: The core editing technology uses Signed Distance Fields (SDF) and Constructive Solid Geometry (CSG). This allows shapes to be blended, merged, and carved using Boolean operations in a non-destructive, parametric workflow, similar to working with digital clay but with precise mathematical controls.
3. AI-Powered Sketch-to-3D Generation: Users can sketch directly onto the 3D canvas. The editor's AI interprets these 2D strokes and instantly generates corresponding solid 3D geometry, dramatically speeding up the conceptual design and modeling phase.
4. Real-Time, High-Quality Rendering Engine: The editor features a built-in real-time renderer capable of producing advanced material effects like iridescence, holographic surfaces, procedural textures, and realistic glass. This enables high-fidelity visualization without exporting to separate rendering software.
5. Open-Source SDK & MCP Server for AI Agents: The entire stack—viewer, editor, and core engine—is published as MIT-licensed npm packages (@pascal-app/viewer, @pascal-app/editor). Additionally, a Model Context Protocol (MCP) server allows external AI agents to read, analyze, and modify Pascal scenes programmatically, enabling automation and AI-augmented design.

Problems Solved

1. Pain Point: The high barrier to entry and steep learning curve associated with professional 3D CAD/BIM software like Revit, SketchUp, or Blender, which limits accessibility for non-experts and slows down early-stage design exploration.
2. Target Audience: The primary user personas include Homeowners and Property Developers (for remodeling visualization), Architects and Contractors (for rapid prototyping and client presentations), Game Designers and Content Creators (for building 3D environments), and Software Developers & Plugin Builders (who can embed or extend the open-source engine).
3. Use Cases: Key scenarios include: creating a digital twin of an existing property for renovation planning; rapid architectural sketching and massing studies in early design phases; interactive 3D presentations for client walkthroughs; procedural generation of building interiors for game development; and embedding a 3D configurator into a real estate or product website using the npm packages.

Unique Advantages

1. Differentiation: Unlike traditional desktop-bound software, Pascal is entirely web-based and collaborative by default. Unlike simplistic room planners, it offers professional-grade parametric modeling (SDF/CSG). Unlike closed-source SaaS tools, its core is open-source and extensible.
2. Key Innovation: The combination of a browser-native SDF/CSG engine with AI-assisted sketching and an open MCP interface creates a unique ecosystem. This allows for a fluid, intuitive design workflow from scan/sketch to detailed model to AI-driven automation, all within a shareable web link and embeddable in other products.

Frequently Asked Questions (FAQ)

1. Is Pascal a free 3D architectural software? Pascal offers a free tier for its core browser-based 3D editor and viewer. Advanced features, high-resolution exports, and the Pascal Capture mobile app may operate under a freemium or paid model. The underlying engine and SDK are open-source and free to use under the MIT license.
2. How does Pascal compare to SketchUp for architecture? While both are used for architectural modeling, Pascal is fundamentally different: it's browser-based (no install), uses a parametric SDF/CSG modeling core (like clay) versus polygonal modeling, emphasizes real-time collaboration and sharing via link, and is open-source. It is better suited for rapid ideation, digital twins, and web integration.
3. Can I import my own 3D models or IFC files into Pascal? Yes, Pascal supports importing standard 3D file formats. Crucially, it provides an open-source @pascal-app/ifc-converter tool, allowing users to import Industry Foundation Classes (IFC) files from professional BIM software like Revit, facilitating BIM-to-web visualization and lightweight editing workflows.
4. What is the Pascal MCP server and how do AI agents use it? The Pascal MCP (Model Context Protocol) server is a bridge that allows Large Language Models (LLMs) and AI agents to interact with a Pascal scene. Agents can query the scene data (e.g., "find all rooms under 12m²") and execute commands to modify objects, materials, and layouts programmatically, enabling AI-augmented design automation.
5. Can I embed the Pascal 3D viewer into my own website or application? Absolutely. The @pascal-app/viewer npm package is a standalone, high-performance WebGL 3D viewer designed specifically for embedding. Developers can integrate it to display and interact with Pascal scenes or compatible 3D models within any custom web application, retaining full visual fidelity and interactivity.