@antv/x6/es/registry/connection-point/rect.js

JavaScript diagramming library that uses SVG and HTML for rendering.

import { bbox } from './bbox';
import { offset, getStrokeWidth } from './util';
import { FunctionExt } from '../../util';
/**
 * Places the connection point at the intersection between the
 * link path end segment and the element's unrotated bbox.
 */
export const rect = function (line, view, magnet, options, type) {
    const cell = view.cell;
    const angle = cell.isNode() ? cell.getAngle() : 0;
    if (angle === 0) {
        return FunctionExt.call(bbox, this, line, view, magnet, options, type);
    }
    const bboxRaw = view.getUnrotatedBBoxOfElement(magnet);
    if (options.stroked) {
        bboxRaw.inflate(getStrokeWidth(magnet) / 2);
    }
    const center = bboxRaw.getCenter();
    const lineRaw = line.clone().rotate(angle, center);
    const intersections = lineRaw.setLength(1e6).intersect(bboxRaw);
    const p = intersections && intersections.length
        ? lineRaw.start.closest(intersections).rotate(-angle, center)
        : line.end;
    return offset(p, line.start, options.offset);
};
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