v6.2.0

• Layer repair:
  • Fixed single-pass island and suction-cup re-detection.
  • Fixed the inclusive layer range so the final selected layer is processed.
  • Restricted repairs and island detection to the selected range.
  • Removed the early return that skipped morphology and empty-layer removal.
  • Indexed issues by layer instead of repeatedly scanning all issues.
  • Added deterministic Mat disposal and exception-safe attachment locking.
  • Fixed attachment of early layers and prevented source-layer modification.
  • Improved cancellation handling, validation, progress counts, and all-empty-file handling.
  • Prevented repaired islands from being processed again by later stages.
• Operations:
  • Audited all operation implementations for correctness, cancellation, native-resource ownership, and avoidable work.
  • Invalidated cached validation after settings change, rejected reversed layer ranges, and disposed internally owned
    progress state.
  • Made native matrix, ROI, cache, and imported-format cleanup deterministic across calibration, import, mesh export,
    dynamic-height, arithmetic, dimming, raft, re-height, and redraw operations.
  • Reduced multi-layer removal from repeated full-layer shifts to one pass while handling duplicate and invalid indexes
    safely.
  • Replaced quadratic pattern-image string construction with row builders and avoided oversized pattern tiling.
  • Fixed re-height difference accumulation and pixel-corrosion indexing errors.
  • Fixed clone, phased-exposure, double-exposure, and timelapse layer placement/counting while avoiding partial commits
    on cancellation.
  • Made light-bleed compensation deterministic by reading immutable layer snapshots instead of concurrently modified
    neighbors.
  • Fixed dynamic-lift zero-range calculations, resize fade endpoints, overlapping copy moves, transition progress, and
    lift-time calculations.
  • Fixed infill wave stepping/Z accumulation, pattern cleanup, and exact pattern repeat sizing.
  • Fixed GIF frame counts, zero FPS handling, rotated frame dimensions, save error reporting, and image/heat-map crop
    transforms.
  • Improved mask ownership and ROI behavior, layer-arithmetic bounds/masking, lithophane sizing, and PCB render reuse.
• Gerber:
  • Audited the complete Gerber parser, apertures, macros, and drawing primitives.
  • Reworked command tokenization to support multiple commands per line and multiline extended commands without repeated
    string concatenation.
  • Fixed signed and trailing-zero coordinates, modal D01/D02/D03 operations, relative positioning, duplicate
    definitions, and combined G01/G02/G03 commands.
  • Added validated single- and multi-quadrant arc interpolation, optional I/J offsets, correctly stroked full circles,
    and arc support inside regions.
  • Replaced the aperture regex parser with allocation-conscious validated parsing and fixed clipped rectangle flashes
    near image boundaries.
  • Added ordered macro variable assignments, invariant-culture expression evaluation, malformed-input handling, outline
    vertex validation, and rotation around the macro origin for every primitive.
  • Consolidated duplicated primitive expression logic and reduced temporary allocations throughout parsing and drawing.
  • Capture the coordinate sign so negative plots are placed correctly. by @The-Bootloader (#1133)
  • Auto-center the artwork, render it upright, and optionally by @The-Bootloader (#1133)
  • Warn when a drill file would be silently ignored. by @The-Bootloader (#1133)
  • Add anchors to PCB render
• Excellon:
  • Reworked coordinate and tool parsing to handle declared formats, signed and decimal coordinates, zero suppression,
    omitted axes, and malformed input without regex allocations or parser exceptions.
  • Added incremental coordinates, repeats, routed linear slots, G85 slots, M71/M72 units, and G90/G91 positioning.
  • Fixed FILE_FORMAT fractional precision, asymmetric pixel scaling, duplicate tools, stale parser state, and
    invariant-culture serialization.
  • Added slot rendering and deterministic sizing validation.
• GCode:
  • Audited the complete GCode builder, command, and layer-state implementations.
  • Fixed invariant-culture output, command equality/hash consistency, line counting, compact command parsing, numeric
    validation, LED-off detection, PWM scaling, sync-delay detection, and layer bounds/state resets.
  • Fixed relative retract acceleration, zero-valued retract suppression, event arguments, Klipper setup idempotence,
    malformed thumbnail handling, and out-of-range layer detection.
  • Reduced rebuild work by reusing movement lists, replacing quadratic remaining-time sums with a running total, and
    avoiding thumbnail chunk allocations.
• File formats:
  • Reduced GCode thumbnail and FlashForge SVGX path-building allocations with bounded stack-backed and sparse DotNext
    buffer writers.
  • Made FlashForge SVG coordinate serialization culture-invariant.
  • Add GetRleBufferInitialCapacity helper to FileFormat for consistent RLE buffer sizing
  • Add Goo V5.0, V5.1 and V5.2 support by @AlchMeow (#1129) fixes #1114
  • Refactor RLE encode/decode across all file formats to use BufferWriterSlim<byte> instead of List<byte>, reducing
    allocations
  • Replace List<byte> layer line buffers with MemoryOwner<byte> using ArrayPool for pooled, zero-copy layer
    encoding/decoding
  • Improve robustness: add bounds checks to RLE decoders, dispose Mat on error, validate ZIP entry sizes
  • Fix CTBEncryptedFile.CryptFile to use a shared backing buffer instead of copying
  • Fix SL1File swapped BottomLightPWM/LightPWM default values
  • Fix NanoDLPFile incorrect DisplayController condition
  • Fix KlipperFile regex group count checks and float parsing with InvariantCulture
  • Fix ZCodexFile division-by-zero when LayerCount == 0
• Layer compression:
  • Preserved sparse, incrementally growing compression streams for large matrices while reducing Zstandard
    decompression overhead by decoding directly into the destination matrix.
  • Rejected truncated, oversized, and dimension-mismatched LZ4 and Zstandard decompressed data.
• Mesh export:
  • Added shared stack-buffered, invariant UTF-8 record formatting across AMF, 3MF, OBJ, OFF, PLY, STL, and WRL exports.
  • Replaced repeated dictionary lookups with single-probe vertex-cache access in all indexed mesh exporters.
  • Combined binary PLY vertex/face records and STL triangles into one stream write per record without heap allocations.
  • Removed per-candidate string allocations from mesh extension lookup and made matching case-insensitive.
  • Fixed cropped rotation/flip exports, non-square pixel pitch after quarter-turn rotation, and layer Z placement.
  • Made cancellation, temporary writer, and voxel subtraction-matrix cleanup deterministic while preserving the
    selected output extension.
• Suggestions:
  • Audited every suggestion for validation, cancellation, progress ownership, malformed profile handling, and avoidable
    work.
  • Fixed bottom-layer target caps, transition-layer zero-step handling and reporting, and exact/stable model corner
    placement.
  • Corrected bottom/normal limits, clamping, proportional inputs, and light-off-delay handling for wait-before-cure and
    wait-after-cure suggestions.
  • Removed repeated transition-layer scans, made random anchors allocation-free, and replaced whole-file XML regex
    matching with secure streaming profile discovery.
• Advanced image box:
  • Fixed zoom-level navigation skipping adjacent levels and failing with an empty level collection
  • Corrected centered zoom anchoring and tracker-image sizing when automatic tracker zoom is disabled
  • Made pointer panning and selection end reliably when the pointer is released outside the control
  • Rejected empty zoom regions and clipped selections safely to image bounds
• Optimize FileStreamExtensions read/write methods using BinaryPrimitives and stack-allocated spans
• Fix .gitignore the NUKE temp directory by @The-Bootloader (#1132)
• Rename "010" solution folder to work around Nuke source generator bug by @The-Bootloader (#1133)
• (Upgrade) .NET from 10.0.9 to 10.0.10
• (Upgrade) AvaloniaUI from 12.0.5 to 12.1.1