@antv/g2
Version:
the Grammar of Graphics in Javascript
33 lines • 1.55 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.hideOverlap = void 0;
var util_1 = require("@antv/util");
var collision_detect_1 = require("../../../util/collision-detect");
var util_2 = require("../util");
/**
* label 防遮挡布局：在不改变 label 位置的情况下对相互重叠的 label 进行隐藏（非移除）
* 不同于 'overlap' 类型的布局，该布局不会对 label 的位置进行偏移调整。
* @param labels 参与布局调整的 label 数组集合
*/
function hideOverlap(items, labels, shapes, region) {
// todo 添加 labelrank
// each label will hide the next one because the next one always has lower rank.
// Detect overlapping labels
for (var i = 0; i < labels.length; i++) {
var label1 = labels[i];
if (labels[i].get('visible')) {
for (var j = i + 1; j < labels.length; j++) {
var label2 = labels[j];
if (label1 && label2 && label1 !== label2 && label2.get('visible')) {
var box1 = util_2.getlLabelBackgroundInfo(label1, items[i], util_1.get(items[i], 'background.padding'));
var box2 = util_2.getlLabelBackgroundInfo(label2, items[j], util_1.get(items[j], 'background.padding'));
if (collision_detect_1.isIntersect(box1, box2)) {
labels[j].set('visible', false);
}
}
}
}
}
}
exports.hideOverlap = hideOverlap;
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