@antv/util
Version:
> AntV 底层依赖的工具库，不建议在自己业务中使用。
45 lines • 1.36 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.normalizeSegment = normalizeSegment;
/**
* Normalizes a single segment of a `PathArray` object.
* eg. H/V -> L, T -> Q
*/
function normalizeSegment(segment, params) {
var pathCommand = segment[0];
var px1 = params.x1, py1 = params.y1, px2 = params.x2, py2 = params.y2;
var values = segment.slice(1).map(Number);
var result = segment;
if (!'TQ'.includes(pathCommand)) {
// optional but good to be cautious
params.qx = null;
params.qy = null;
}
if (pathCommand === 'H') {
result = ['L', segment[1], py1];
}
else if (pathCommand === 'V') {
result = ['L', px1, segment[1]];
}
else if (pathCommand === 'S') {
var x1 = px1 * 2 - px2;
var y1 = py1 * 2 - py2;
params.x1 = x1;
params.y1 = y1;
result = ['C', x1, y1].concat(values);
}
else if (pathCommand === 'T') {
var qx = px1 * 2 - params.qx;
var qy = py1 * 2 - params.qy;
params.qx = qx;
params.qy = qy;
result = ['Q', qx, qy].concat(values);
}
else if (pathCommand === 'Q') {
var nqx = values[0], nqy = values[1];
params.qx = nqx;
params.qy = nqy;
}
return result;
}
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