swOperation/node_modules/@antv/gui/lib/util/matrix.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.vertical = exports.rotate = exports.normalize = exports.distance = exports.max = exports.min = exports.sub = exports.add = exports.scale = void 0;
var tslib_1 = require("tslib");
/**
 * @param vec
 * @param s
 */
function scale(vec, s) {
    return [vec[0] * s, vec[1] * s];
}
exports.scale = scale;
function add(vec1, vec2) {
    return [vec1[0] + vec2[0], vec1[1] + vec2[1]];
}
exports.add = add;
function sub(vec1, vec2) {
    return [vec1[0] - vec2[0], vec1[1] - vec2[1]];
}
exports.sub = sub;
function min(vec1, vec2) {
    return [Math.min(vec1[0], vec2[0]), Math.min(vec1[1], vec2[1])];
}
exports.min = min;
function max(vec1, vec2) {
    return [Math.max(vec1[0], vec2[0]), Math.max(vec1[1], vec2[1])];
}
exports.max = max;
function distance(vec1, vec2) {
    return Math.sqrt(Math.pow((vec1[0] - vec2[0]), 2) + Math.pow((vec1[1] - vec2[1]), 2));
}
exports.distance = distance;
function normalize(vec) {
    if (vec[0] === 0 && vec[1] === 0)
        return [0, 0];
    var len = Math.sqrt(Math.pow(vec[0], 2) + Math.pow(vec[1], 2));
    return [vec[0] / len, vec[1] / len];
}
exports.normalize = normalize;
/**
 * 将给定向量围绕指定点旋转指定角度
 * @param vec
 * @param origin 旋转中心
 * @param angle 旋转角度，弧度制
 */
function rotate(vec, origin, angle) {
    var _a = tslib_1.__read(vec, 2), x = _a[0], y = _a[1];
    var _b = tslib_1.__read(origin, 2), ox = _b[0], oy = _b[1];
    var dx = x - ox;
    var dy = y - oy;
    var sin = Math.sin(angle);
    var cos = Math.cos(angle);
    return [dx * cos - dy * sin + ox, dx * sin + dy * cos + oy];
}
exports.rotate = rotate;
function vertical(vec, flag) {
    return flag ? [vec[1], -vec[0]] : [-vec[1], vec[0]];
}
exports.vertical = vertical;
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