Alain Matthes submitted an update to the

tkz-elements

package.

Version number: 3.30c License type: lppl1.3

Summary description: A Lua library for drawing Euclidean geometry with TikZ or tkz-euclide

Announcement text: ----------------------------------------------------------------------

Major evolution of tkz-elements with the introduction of the "conic" class, which replaces the "ellipse" class.

- The latter was based on the "ellipse" operation, whereas "plot coordinates" is now used to construct all conic sections: parabolas, hyperbolas, and ellipses. It is worth noting that the circle, although a conic section, is not included in this class. Its significance grants it a special status and a dedicated class of its own. - Another class has been introduced: the "occs" class (orthonormal Cartesian coordinate system). To simplify the construction of conic sections, it was necessary to use well-suited coordinate systems. - A major change is the removal of scaling within the "Lua" section. Initially, I was in favor of avoiding scaling in the "TikZ" part, but since most calculations were already performed there, I realized that it was significantly simpler to apply scaling within the tikzpicture environment. Technical complexities sometimes arise when scaling is handled in the "Lua" section, so I decided to remove this option.

Modifications: - In the "regular_polygon" class, I renamed the item "table" to "vertices," which is more appropriate and I also removed the "first" and "next" items, as they were unnecessary. -Correction of the code for the intersection of two circles, which did not provide an appropriate response in cases where no intersection was possible. - Improvement of the code for the "euler_line" method of the class "triangle". - Improvement of the code for the "is_orthogonal" method of the class "line".

Additions:: - Major additions: the "conic" and "occs" classes. - An object of the "conic" class is created using the following arguments: focus, directrix, and eccentricity. - The available methods are: points, point, antipode, tangent_at, tangent_from, intersection, in_out, orthopedic, and asymptotes. - The 'points' method, common in many classes, allows creating a set of coordinates defining an object (e.g., a conic), extending the 'point' method which creates individual points. - The functions EL_points, EL_bifocal, HY_bifocal, PA_dir, and PA_focus provide the necessary arguments depending on the given data and the conic section being constructed. - The transformations "projection_ll" and "affinity" are now available for the "line" class. - The creation of an object from the "occs" class is done using the data of a line and a point. This point will be the origin of the new coordinate system, while the line will define the direction of the new y-axis. - The 'kimberling' method allows the creation of some points using this notation with the 'triangle' class. - The methods: steiner_line, simson_line, fermat-axis, brocard_axis, lemoine_axis, orthic_axis and orthic_axis_points complete the methods of the triangle class, as well as the anticomplementary or anti method, the taylor_circle and the taylor_points methods. - Two macros for the 'tikzpicture' part have been created: \tkzDrawCoordinates for obtaining a curve from a table of coordinates and \tkzDrawPointOnCurve for placing a point on such a curve.

About documentation: Removal of all “overfull boxes”. Added examples concerning new features Corrected some examples, such as the Euler line.

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This package is located at https://mirrors.ctan.org/macros/latex/contrib/tkz/tkz-elements

More information is at https://www.ctan.org/pkg/tkz-elements

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Thanks for the upload.

For the CTAN Team Erik Braun

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