2023-02 Porter-Duff Compositing Operators in R Graphics
This document describes an upate to the behaviour of Porter-Duff compositing operators in R graphics. Paul Murrell, Thomas Lin Pedersen, and Panagiotis Skintzos. Download
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2023-01 Rendering Typeset Glyphs in R Graphics
This document describes a new feature in the R graphics engine to support rendering typeset glyphs. This provides a basis for developing improved text rendering …
2022-04 Constructive Solid Geometry and Function Representation in R
The HyperFun Project provides a language and interpreter for describing 3D scenes using Function Representation and Constructive Solid Geometry. This document describes the R package …
2022-03 Offsetting Lines and Polygons in ‘grid’
This document describes new functions in the ‘gridGeometry’ package for R that generate offset regions and Minkowski Sums for lines and polygons. Jack Wong and …
2022-02 Constructive Geometry for Complex Grobs
This document describes developments in the grobCoords() function in the R package ‘grid’, plus improvements to the ‘gridGeometry’ package that makes use of the grobCoords() …
2022-01 Vectorised Pattern Fills in R Graphics
This document describes an extension of the support for pattern fills in R graphics (linear gradients, radial gradients, and tiling patterns) to allow multiple pattern …
2021-04 Luminance Masks in R Graphics
This document describes an extension of the support for masks in R graphics to allow luminance masks as well as alpha masks. Paul Murrell Download
2021-03 Stroking and Filling Paths in R Graphics
This document describes an expansion of the R graphics engine to support stroking and filling paths. Paul Murrell Download
2021-02 Groups, Compositing Operators, and Affine Transformations in R Graphics
This document describes an expansion of the R graphics engine to support a number of new graphical features: isolated groups, compositing operators, and affine transformations. …
2021-01 Accessing ‘grid’ from ‘ggplot2’
This report describes the ‘gggrid’ package, which provides a convenient interface for making use of raw ‘grid’ functions in combination with ‘ggplot2’. The ‘gggrid’ package …