Release v0.8.1

Fixed

• Missing flag in OASIS bounding box property
• Bug in bounding box when using explicit repetitions
• Segfault when loading GDSII files with missing cells

Changed

• GdsWriter C++ API
• Safer initializers C++ API

Release v0.8.0

Added

• Cell.get_polygons, Cell.get_paths, and Cell.get_labels return a copy of a cell’s polygons, paths or labels, including references, with the possibility of filtering by layer and type
• Library.layers_and_datatypes and Library.layers_and_texttypes return tuples with the layer and data/text types found in the library.
• gdstk.gds_info provide information about a GDSII file without fully loading it
• Several FlexPath and RobustPath attributes.

Fixed

• Label transforms in SVG output
• Label styling in SVG output
• Default label magnification when loading a GDSII file
• Bugs when loading some OASIS files
• Bug in OASIS output for some Manhattan geometry.
• Bug fix in Map::del
• Bounding box calculations take all repetitions into account
• Memory leaks

Changed

• Removed LAPACK dependency
• The implementation of layer and data/text type for shapes and labels use the type Tag in the C++ API
• Style arguments renamed in Cell.write_svg

Release v0.7.0

This version includes some breaking changes to the API. Most notably, the change in the gdstk.inside function and the addition of the dedicated short-circuit versions gdstk.all_inside and gdstk.any_inside, plus methods Polygon.contain, Polygon.contain_all, and Polygon.contain_any.

This version also introduces the new function gdstk.contour for the parametric generation of geometries similarly to contour plots.

Added

• contour function
• Polygon.transform to apply a general transformation to the polygon vertices
• Polygon.contain tests whether single points are inside the polygon
• Polygon.contain_all and Polygon.contain_any test multiple points with short circuit
• all_inside and any_inside test multiple points against multiple polygons with short circuit
• Alternative function interfaces in the C++ API

Fixed

• Holes in boolean results could lead to incorrect geometry in specific cases
• Bug in boolean operations resulting in self-intersecting polygons
• Bug in boolean operations with clockwise-oriented polygons
• Unsupported reccords found when loading a library generate a warning, not an error.

Changed

• inside has changed to use the better interfaces: grouping has been removed, scaling is not necessary, and short-circuit is implemented in all_inside and any_inside

Release v0.6.1

Minor bug fix release to fix the Library.read_oas (in Python) and gdstk::read_oas (in C++).

Release v0.6.0

Added

• Library.replace, used when adding cells with substitution of duplicate cell names
• Added pyproject.toml (thanks Ben Gollmer for the fix)

Changed

• Reference.cell is now writable

Fixed

• Bug in Array::insert not incerasing the array count

Release v0.5.0

Added

• Argument precision in Cell.write_svg controls the maximum number of digits of coordinates in the SVG
• Function gds_timestamp can be used to query or set the timestamp in a GDSII file
• Better error handling in the C++ API and argument validation for the Python wrapper

Changed

• oas_validate returns None if the file has no checksum information
• Library.write_gds and GdsWriter accept a timestamp setting

Fixed

• Bend calculation for FlexPath correctly accounts for bending angle to make sure the bend fits
• Missing files in the source distribution

Release v0.4.0

Besides the changes indicated in the CHANGELOG (copied below), this releases includes the documentation of the C++ API (all examples, a short introduction, and header files). However, the C++ API is not yet to be considered stable (neither is the Python wrapper, but there shouldn't be many braking changes there).

Added

• Cell.filter to remove elements by layer and data/text type
• Cell.convex_hull and Reference.convex_hull
• FlexPath.path_spines() and RobustPath.path_spines()
• Library.unit and Library.precision
• Shapes can be sorted in Cell.write_svg (sorting works within each cell, references remain on top)

Changed

• Bounding box calculations use convex hull for efficiency
• Bounding box and convex hull calculations cache intermediate results for efficiency

Fixed

• Robustpath.parametric docstring.
• Accept None as a possible value for arguments in several RobustPath methods

Release v0.3.2

Fixed

• Build system fixes for conda recipe

Release v0.3.1

Fixed

• Missing constant definition

Release v0.3.0

0.3.0 - 2021-02-12

Added

• Support for OASIS files
• Repetition property for geometric objects, labels and references
• Library and cells can have properties

Changed

• Use cmake to properly install library
• More efficient bounding box calculation for rotations multiple of 90°
• Labels are now included in bounding box calculations
• Properties can be general or GDSII-specific. Only the latter are stored in gds files.
• Attribute gdsii_path renamed to simple_path in FlexPath and RobustPath.