openiso 0.7.7

Lightweight isometric piping symbol editor

OpenIso

Lightweight Isometric Piping Symbol Editor

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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.

Features

• 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.

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Supported Symbol Keys (Skeys)

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

Category	Skey Examples	Description
Valves	VAVW, VAGL, VACK	Gate, Globe, and Check valves
Fittings	ELBW, TEBW, REDC	Elbows, Tees, and Concentric Reducers
Supports	HNGR, GUID, STOP	Pipe hangers and supports
Instruments	INST, FLME	Inline instruments and Flow meters
Special	CAPW, FLRF	Caps and Raised Face Flanges

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Symbol Anatomy

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

• 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.

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Installation

Clone repository:

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

Install dependencies:

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

Run from the source:

python -m openiso

Building Standalone Executable

Windows

From the repository root:

pyinstaller --clean OpenIso_win.spec

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

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Documentation

:uk: English - Guide to using OpenIso, installation instructions, tutorials, and more.