Lightweight Isometric Piping Symbol Editor

Crowdin Release Linux Windows License: MIT

Main UI

OpenIso is a lightweight, open-source graphical editor designed for creating and managing piping isometric fitting symbols. It bridges the gap between manual sketching and complex CAD suites, providing a streamlined environment for designing Symbol Keys (Skeys) and component graphics used in industrial piping software like AVEVA PDMS/E3D or Intergraph Smart 3D.

• Format Interoperability: Import and view symbols from ASCII (Intergraph) and IDF (AVEVA) files.
• Precision Connectors: Define critical piping points: Arrive, Leave, Tee, and Spindle.
• Vector Toolset: Specialized primitives for skeys:
  • Lines, Rectangles, Rhombus, Circle, Ellipses, Triangles, Caps (Arcs), Hexagons.
  • Hatching and Solid Color Fills.
• Modern Export: Save symbols in ASCII format for integration with modern piping tools.
• Globalized: Full localization support via Crowdin.

OpenIso allows you to define and edit standard SKEY types used in isometric generation:

OpenIso focuses on the logical structure of a piping component. Each symbol is defined by its geometry and functional connection points.

SKEY Structure Diagram

• Arrive & Leave: Define the primary flow path through the component.
• Spindle: The orientation point for valve handles or actuators.
• Tee: (Not shown) Used for branching components.

git clone https://github.com/rompik/OpenIso.git
cd OpenIso

OpenIso requires Python 3.10 or higher and the following Python modules:

• PyQt6 (≥6.0.0) – Qt bindings for the graphical user interface

• markdown (≥3.0.0) – Markdown parser for documentation rendering

• pyinstaller (≥5.0.0) – Package Python applications into standalone executables

pip install -r requirements.txt

python -m openiso

From the repository root:

pyinstaller --clean OpenIso_win.spec 

Output file will be save in folder dist with name OpenIso_.exe

🇬🇧 English - Complete guide to using OpenIso, installation instructions, tutorials, and more.