vexy-lines-py 1.0.4

Pure-Python cross-platform parser for Vexy Lines .lines vector art files

vexy-lines-py

Parse Vexy Lines .lines vector art files in pure Python — no app, no macOS, no heavy dependencies.

Install

pip install vexy-lines-py

Python 3.10+. Runtime dependency: loguru only.

Quick start

from vexy_lines import parse, GroupInfo, LayerInfo

doc = parse("artwork.lines")
print(doc.caption, doc.dpi)          # "My Art"  300
print(doc.props.width_mm, "x", doc.props.height_mm, "mm")

# Walk the layer tree
for node in doc.groups:
    if isinstance(node, GroupInfo):
        for child in node.children:
            if isinstance(child, LayerInfo):
                for fill in child.fills:
                    p = fill.params
                    print(p.fill_type, p.color, f"interval={p.interval}")
                    # "linear"  "#1a2b3c"  interval=2.5

# Embedded source image (JPEG)
if doc.source_image_data:
    open("source.jpg", "wb").write(doc.source_image_data)

# Embedded preview image (PNG)
if doc.preview_image_data:
    open("preview.png", "wb").write(doc.preview_image_data)

Convenience wrappers for image extraction:

from vexy_lines import extract_source_image, extract_preview_image

extract_source_image("artwork.lines", "source.jpg")
extract_preview_image("artwork.lines", "preview.png")

API

parse(path) -> LinesDocument

Parse a .lines file and return a fully populated LinesDocument.

• FileNotFoundError — path does not exist
• xml.etree.ElementTree.ParseError — file is not valid XML

extract_source_image(path, output) -> Path

Parse and save the embedded JPEG source image to output. Raises ValueError if no source image is present.

extract_preview_image(path, output) -> Path

Parse and save the embedded PNG preview to output. Raises ValueError if no preview is present.

Types

Type	Key attributes
LinesDocument	caption, version, dpi, props, groups, source_image_data, preview_image_data
DocumentProps	width_mm, height_mm, dpi, thickness_min/max, interval_min/max
GroupInfo	caption, object_id, expanded, `children: list[GroupInfo
LayerInfo	caption, object_id, visible, mask, fills: list[FillNode], grid_edges
FillNode	xml_tag, caption, params: FillParams, object_id
FillParams	fill_type, color, interval, angle, thickness, smoothness, uplimit, downlimit, multiplier, dispersion, shear, raw
MaskInfo	mask_type, invert, tolerance

FillParams.raw holds every original XML attribute, including algorithm-specific keys not promoted to named fields.

Colors are normalised to #RRGGBB (opaque) or #RRGGBBAA. The raw Vexy Lines #AARRGGBB encoding is converted automatically.

Fill types

14 algorithms are recognised in FillParams.fill_type:

Value	Algorithm
linear	Parallel straight lines
circular	Concentric circles
trace	Free-curve strokes following image contours
spiral	Archimedean spirals
wave	Sine-wave strokes
radial	Lines radiating from a centre point
halftone	Halftone dot/line patterns
scribble	Random scribble-style strokes
fractals	Fractal-branching strokes
handmade	Sketch-style handmade strokes
peano	Peano space-filling curves
sigmoid	Sigmoid-shaped strokes
trace_area	Area-trace fill
source_strokes	Strokes derived from the source image

The mapping from XML tags to these names is available as FILL_TAG_MAP. The full set of recognised tags is FILL_TAGS.

Full documentation

Read the docs for the complete API reference, file format specification, and more examples.

License

MIT