kirra-docs

DXF Import

Kirra imports AutoCAD DXF files (both ASCII and binary formats) and converts them into blast holes and KAD drawing entities.

Screenshot coming soon

How to Import

Click File > Import in the DXF section
Select one or more .dxf files – Kirra supports batch upload of multiple DXF files at once
Kirra auto-detects whether each file is ASCII or binary DXF
Entities are imported and appear in the TreeView

Batch Upload

You can select multiple DXF files in the file picker (hold Ctrl or Shift to multi-select) or drag and drop several files at once. Each file is parsed individually and its entities are added to the project. This is especially useful when importing blast designs that are split across multiple DXF files (e.g., one per bench level or blast area).

Supported DXF Entity Types

DXF Entity	Imported As	Notes
POINT	KAD point or blast hole collar	Auto-detected based on attributes
LINE	KAD line (2-point polyline)
POLYLINE	KAD line or polygon	Open = line, closed = polygon
LWPOLYLINE	KAD line or polygon	Lightweight polyline variant
CIRCLE	KAD circle
ELLIPSE	KAD polyline	Approximated as arc segments
TEXT / MTEXT	KAD text entity
3DFACE	Surface triangles	Imported as triangulated surface

Layer Handling

Each DXF layer becomes a separate entity in Kirra
The layer name becomes the entityName
DXF colour codes are converted to hex colours

Binary DXF

Kirra automatically detects binary DXF files (identified by their header bytes). Binary DXF files are approximately 25% smaller and parse up to 5x faster than ASCII DXF.

3DFACE Surface Import

DXF files containing large numbers of 3DFACE entities (surface triangles) are imported using a spatial-hash vertex deduplication algorithm for fast performance. This handles files with 100,000+ triangles efficiently.

Coordinate System

Full 3D coordinates (X, Y, Z) are preserved on import. No coordinate transformation is applied – ensure your DXF uses the same coordinate system as your project.