Overview

SDK components

The Hanulsoft ENC Kernel SDK is organised as:

• henc kernel — chart loading, display, and view management
• egl module — colours, line styles, polygon fill patterns over OpenGL
• util — coordinate/distance/azimuth helpers (Vincenty, Haversine, …)
• Language bindings — uniform interface across C / C++ / C# applications

Typical workflow

flowchart LR
    A[hencInit] --> B[hencCreate]
    B --> C[hencLoad]
    C --> D[Display / Pan / Zoom / Rotate]
    D --> E[hencDelete]
    E --> F[hencDeinit]

1. hencInit — loads S-52 data and the user config (data\encoptions.ini).
2. hencCreate — creates a view handle. Multi-view setups simply allocate more handles.
3. hencLoad — loads an S-57 cell into the view.
4. Use display / pan / zoom / rotate / layer toggle functions from application logic.
5. hencDelete / hencDeinit — release view and kernel resources in order.

Standards

• S-52 — presentation library
• S-57 — ENC data exchange standard
• S-63 — secure (encrypted cells) standard — all conformance items passed

Certifications

• Korean Register (KR)
• IHO S-63 conformance suite

Next steps

• API Reference / henc
• Samples
• Hanulsoft home

⚠️ This is a stub translation. The Korean version is the source of truth until full translation lands.