Contact person: Business Client

Phone:Show

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Location: Seoul, Korea, Republic of

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"Project Brief (Freelancer.com)

Project Title: Build an automated PLT (Left/Right) → Han’s Laser .hs Converter (Windows)
Client: Betterway Systems (BWS) — Korea
Posting Date: 20 Oct 2025 (KST)
Project Type: One-time build with optional maintenance
Experience Level: Expert (HPGL/CAM/CNC, file-format writer & reverse engineering)

0) TL;DR

Input is already two PLT files per job ([login to view URL], [login to view URL]) generated by us.

Your task is to convert PLT (L/R) → .hs (L/R) and fully automate what we currently do inside the machine software:

auto-detect the centers of two registration crosses, create mark1/mark2 point entities on dedicated layers,

translate the Right design by −263.5 mm in X (HPGL baseline 40 units/mm ⇒ −10,540 units),

and save native Han’s Laser .hs files that load and cut without manual edits.

Timeline: 2 weeks (14 days) fast track, with a D+2 format-access gate (official SDK/spec or lawful interoperability reverse-engineering).

1) Company & Background

Betterway Systems (BWS) runs high-volume custom printing and laser cutting lines. We already generate Left/Right PLT (HPGL) files. Today, operators still need to add marks, offset the Right design, and export .hs inside the Han’s Laser software. This manual step is the bottleneck and a source of errors. We need a fully automated converter from PLT(L/R) to .hs(L/R).

2) Objective

Given [login to view URL] and [login to view URL], automatically produce two .hs files (Left/Right) that open and cut in the Han’s Laser software with zero manual edits.

3) Scope of Work (V1 — 2-Week Fast Track)

Ingestion: Watch-folder + CLI (Windows). Input per job: [login to view URL], right.plt.

HPGL parser & unit guardrails: Validate or configure 40 units/mm (1016 dpi); prevent double conversions.

Cross detection: Auto-detect two registration crosses in each PLT and compute their intersection centers (robust against noise/±5° rotation).

Marks: In the output .hs, create mark1 and mark2 point entities on dedicated layers at those centers.

Right-side offset: Apply X = −263.5 mm translation to the Right design (configurable), with precise unit conversion (−10,540 units at 40 units/mm).

.hs writer: Generate native Han’s Laser .hs files for Left/Right with the required layers/attributes so the machine software can load & cut without manual edits.

Preview & logging: Produce PNG thumbnails and JSON logs per job (mark coordinates, unit conversions, offsets, warnings/errors).

Deferred (Phase 2, optional after 2 weeks): Minimal GUI, advanced geometry healing beyond essentials, broader PLT dialect compatibility matrix, multi-threaded batch orchestrator, RBAC.

4) Inputs We Provide

For each job: [login to view URL] and [login to view URL] (already split by our existing process)

2–3 reference .hs files exported from the machine software

Device notes: Han’s Laser model/software version, work area, origin/units, current calibration values

Registration cross specs: line length/thickness, layer/color, edge cases

5) Deliverables

Windows build: Installer or portable package (watch-service + CLI)

Source code in a Git repository + build scripts + sample configs

.hs writer implementation with format notes/spec (if reverse-engineered)

Documentation: Architecture, data flow, CLI usage, operations manual, troubleshooting

Automated tests: Unit/integration/E2E + verification report (precision & compatibility)

Demo assets: Short screencast; throughput & accuracy report

6) Technical Expectations (Preferred Stack)

Language/runtime: C#/.NET or Python (C++ module if needed for performance)

HPGL handling: robust PLT (HPGL) parser/writer know-how

Geometry: clipping/offset/healing as needed to ensure stable export

Rendering: Cairo/Skia for preview images

Packaging: Windows Service + CLI (minimal GUI may be Phase 2)

Licensing: Avoid GPLv3-viral dependencies for distribution

7) Acceptance Criteria (UAT / Quality)

Precision: mark placement error ≤ ±0.02 mm; offset/coordinate error ≤ ±0.05 mm

Performance: P95 ≤ 10 s/job (A3-scale complexity, ≤100k primitives) on a standard Windows workstation

Compatibility: .hs opens and runs in Han’s Laser software with zero manual edits (Left & Right, ≥3 jobs each)

Robustness: Batch of 50 jobs (100 PLTs) ⇒ initial failure ≤ 0.5%; after auto-retry ≤ 0.2%

Logging: Each job logs mark coordinates, unit conversions, offset applied, and any error reasons

8) Legal & IP

.hs is a vendor format. Plan A: use official spec/SDK if available.

Plan B: lawful reverse engineering for interoperability (jurisdiction-compliant).

All source code and deliverables are work-for-hire assigned to BWS. Third-party licenses must be listed with versions.

NDA required prior to receiving proprietary samples." (client-provided description)