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/*
* Copyright 2017, Magnus Jacobsson
* Copyright 2023, The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: BSD-3-Clause
*
* This file Incorporates patches from the Refinery authors.
*
* Redistribution and use is only permitted if neither
* the name of the copyright holder Magnus Jacobsson nor the names of other
* contributors to the d3-graphviz project are used to endorse or promote
* products derived from this software as per the 3rd clause of the
* 3-clause BSD license.
*
* See LICENSES/BSD-3-Clause.txt for more details.
*/
export interface BBox {
x: number;
y: number;
width: number;
height: number;
}
function parsePoints(points: string[]): BBox {
const x = points.map((p) => Number(p.split(',')[0] ?? 0));
const y = points.map((p) => Number(p.split(',')[1] ?? 0));
const xmin = Math.min.apply(null, x);
const xmax = Math.max.apply(null, x);
const ymin = Math.min.apply(null, y);
const ymax = Math.max.apply(null, y);
return {
x: xmin,
y: ymin,
width: xmax - xmin,
height: ymax - ymin,
};
}
/**
* Compute the bounding box of a polygon without adding it to the DOM.
*
* Copyed from
* https://github.com/magjac/d3-graphviz/blob/81ab523fe5189a90da2d9d9cc9015c7079eea780/src/element.js#L36-L53
*
* @param path The polygon to compute the bounding box of.
* @returns The computed bounding box.
*/
export function parsePolygonBBox(polygon: SVGPolygonElement): BBox {
const points = (polygon.getAttribute('points') ?? '').split(' ');
return parsePoints(points);
}
/**
* Compute the bounding box of a path without adding it to the DOM.
*
* Copyed from
* https://github.com/magjac/d3-graphviz/blob/81ab523fe5189a90da2d9d9cc9015c7079eea780/src/element.js#L56-L75
*
* @param path The path to compute the bounding box of.
* @returns The computed bounding box.
*/
export function parsePathBBox(path: SVGPathElement): BBox {
const d = path.getAttribute('d') ?? '';
const points = d.split(/[A-Z ]/);
points.shift();
return parsePoints(points);
}
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