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Co-Authored-By: 狸花猫/Claude-Qwen3.6-Plus 🐾
82 lines
2.7 KiB
JavaScript
82 lines
2.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.getShape = void 0;
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var g_base_1 = require("@antv/g-base");
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function invertFromMatrix(v, matrix) {
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if (matrix) {
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var invertMatrix = g_base_1.invert(matrix);
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return g_base_1.multiplyVec2(invertMatrix, v);
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}
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return v;
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}
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function getRefXY(element, x, y) {
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// @ts-ignore
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var totalMatrix = element.getTotalMatrix();
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if (totalMatrix) {
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var _a = invertFromMatrix([x, y, 1], totalMatrix), refX = _a[0], refY = _a[1];
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return [refX, refY];
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}
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return [x, y];
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}
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// 拾取前的检测，只有通过检测才能继续拾取
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function preTest(element, x, y) {
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// @ts-ignore
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if (element.isCanvas && element.isCanvas()) {
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return true;
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}
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// 不允许被拾取，则返回 null
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// @ts-ignore
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if (!g_base_1.isAllowCapture(element) || element.cfg.isInView === false) {
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return false;
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}
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if (element.cfg.clipShape) {
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// 如果存在 clip
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var _a = getRefXY(element, x, y), refX = _a[0], refY = _a[1];
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if (element.isClipped(refX, refY)) {
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return false;
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}
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}
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// @ts-ignore ，这个地方调用过于频繁
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var bbox = element.cfg.cacheCanvasBBox || element.getCanvasBBox();
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// 如果没有缓存 bbox，则说明不可见
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// 注释掉的这段可能会加速拾取，上面的语句改写成 const bbox = element.cfg.cacheCanvasBBox;
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// 这时候的拾取假设图形/分组在上一次绘制都在视窗内，但是上面已经判定了 isInView 所以意义不大
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// 现在还调用 element.getCanvasBBox(); 一个很大的原因是便于单元测试
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// if (!bbox) {
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// return false;
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// }
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if (!(x >= bbox.minX && x <= bbox.maxX && y >= bbox.minY && y <= bbox.maxY)) {
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return false;
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}
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return true;
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}
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// 这个方法复写了 g-base 的 getShape
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function getShape(container, x, y) {
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// 没有通过检测，则返回 null
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if (!preTest(container, x, y)) {
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return null;
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}
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var shape = null;
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var children = container.getChildren();
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var count = children.length;
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for (var i = count - 1; i >= 0; i--) {
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var child = children[i];
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if (child.isGroup()) {
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shape = getShape(child, x, y);
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}
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else if (preTest(child, x, y)) {
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var curShape = child;
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var _a = getRefXY(child, x, y), refX = _a[0], refY = _a[1];
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// @ts-ignore
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if (curShape.isInShape(refX, refY)) {
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shape = child;
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}
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}
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if (shape) {
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break;
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}
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}
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return shape;
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}
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exports.getShape = getShape;
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//# sourceMappingURL=hit.js.map
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