leader_path

The un-roughened path a callout / annotation leader takes from its start
<code>(sx, sy)</code> (a box edge) to the target <code>(xe, ye)</code>: a <code>"straight"</code> line, an
<code>"elbow"</code> (horizontal then vertical, flowchart style) or a <code>"curved"</code>
quadratic-Bezier bow. Also reports the end tangent so the arrowhead can orient
to it. Pure geometry; the grob roughens the result.

Provides 'ggplot2' geoms that render with a hand-drawn, sketchy
aesthetic: roughened strokes, double-pass lines, and hachure, cross-hatch,
zigzag, and dots fill patterns. Implemented as pure-R 'grid' grobs wrapped
in 'ggproto' geoms, composable with aes(), stats, scales, and faceting.
Works on every R graphics device (PDF, PNG, SVG, screen) with no browser
dependency. Algorithms are reimplemented from the published 'rough.js'
algorithm description (Shihn, 2020,
<https://shihn.ca/posts/2020/roughjs-algorithms/>) and Wood and others
(2012, <doi:10.1109/TVCG.2012.262>); see the NOTICE file in the package
sources for attribution.

Arijit Ghosh

ggsketch

Grammar-Native Hand-Drawn Geoms for 'ggplot2'

leader_path function

<dl><dt>sx, sy</dt>
<dd>Leader start (inch space).</dd>
<dt>xe, ye</dt>
<dd>Target point (inch space).</dd>
<dt>style</dt>
<dd>One of <code>"straight"</code>, <code>"elbow"</code>, <code>"curved"</code>.</dd>
<dt>curvature</dt>
<dd>Bow size for <code>"curved"</code> (signed). Default 0.3.</dd></dl>

Arguments

Route a leader line from a box edge to a target — leader_path

<dl>

<dt>sx, sy</dt>
<dd>Leader start (inch space).</dd>


<dt>xe, ye</dt>
<dd>Target point (inch space).</dd>


<dt>style</dt>
<dd>One of <code>"straight"</code>, <code>"elbow"</code>, <code>"curved"</code>.</dd>


<dt>curvature</dt>
<dd>Bow size for <code>"curved"</code> (signed). Default 0.3.</dd>

</dl>

leader_path: Route a leader line from a box edge to a target

Description

Usage

Value

Arguments

See Also

Examples