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| import { isAroundZero } from './helper.js';
| var mathSin = Math.sin;
| var mathCos = Math.cos;
| var PI = Math.PI;
| var PI2 = Math.PI * 2;
| var degree = 180 / PI;
| var SVGPathRebuilder = (function () {
| function SVGPathRebuilder() {
| }
| SVGPathRebuilder.prototype.reset = function (precision) {
| this._start = true;
| this._d = [];
| this._str = '';
| this._p = Math.pow(10, precision || 4);
| };
| SVGPathRebuilder.prototype.moveTo = function (x, y) {
| this._add('M', x, y);
| };
| SVGPathRebuilder.prototype.lineTo = function (x, y) {
| this._add('L', x, y);
| };
| SVGPathRebuilder.prototype.bezierCurveTo = function (x, y, x2, y2, x3, y3) {
| this._add('C', x, y, x2, y2, x3, y3);
| };
| SVGPathRebuilder.prototype.quadraticCurveTo = function (x, y, x2, y2) {
| this._add('Q', x, y, x2, y2);
| };
| SVGPathRebuilder.prototype.arc = function (cx, cy, r, startAngle, endAngle, anticlockwise) {
| this.ellipse(cx, cy, r, r, 0, startAngle, endAngle, anticlockwise);
| };
| SVGPathRebuilder.prototype.ellipse = function (cx, cy, rx, ry, psi, startAngle, endAngle, anticlockwise) {
| var dTheta = endAngle - startAngle;
| var clockwise = !anticlockwise;
| var dThetaPositive = Math.abs(dTheta);
| var isCircle = isAroundZero(dThetaPositive - PI2)
| || (clockwise ? dTheta >= PI2 : -dTheta >= PI2);
| var unifiedTheta = dTheta > 0 ? dTheta % PI2 : (dTheta % PI2 + PI2);
| var large = false;
| if (isCircle) {
| large = true;
| }
| else if (isAroundZero(dThetaPositive)) {
| large = false;
| }
| else {
| large = (unifiedTheta >= PI) === !!clockwise;
| }
| var x0 = cx + rx * mathCos(startAngle);
| var y0 = cy + ry * mathSin(startAngle);
| if (this._start) {
| this._add('M', x0, y0);
| }
| var xRot = Math.round(psi * degree);
| if (isCircle) {
| var p = 1 / this._p;
| var dTheta_1 = (clockwise ? 1 : -1) * (PI2 - p);
| this._add('A', rx, ry, xRot, 1, +clockwise, cx + rx * mathCos(startAngle + dTheta_1), cy + ry * mathSin(startAngle + dTheta_1));
| if (p > 1e-2) {
| this._add('A', rx, ry, xRot, 0, +clockwise, x0, y0);
| }
| }
| else {
| var x = cx + rx * mathCos(endAngle);
| var y = cy + ry * mathSin(endAngle);
| this._add('A', rx, ry, xRot, +large, +clockwise, x, y);
| }
| };
| SVGPathRebuilder.prototype.rect = function (x, y, w, h) {
| this._add('M', x, y);
| this._add('l', w, 0);
| this._add('l', 0, h);
| this._add('l', -w, 0);
| this._add('Z');
| };
| SVGPathRebuilder.prototype.closePath = function () {
| if (this._d.length > 0) {
| this._add('Z');
| }
| };
| SVGPathRebuilder.prototype._add = function (cmd, a, b, c, d, e, f, g, h) {
| var vals = [];
| var p = this._p;
| for (var i = 1; i < arguments.length; i++) {
| var val = arguments[i];
| if (isNaN(val)) {
| this._invalid = true;
| return;
| }
| vals.push(Math.round(val * p) / p);
| }
| this._d.push(cmd + vals.join(' '));
| this._start = cmd === 'Z';
| };
| SVGPathRebuilder.prototype.generateStr = function () {
| this._str = this._invalid ? '' : this._d.join('');
| this._d = [];
| };
| SVGPathRebuilder.prototype.getStr = function () {
| return this._str;
| };
| return SVGPathRebuilder;
| }());
| export default SVGPathRebuilder;
|
|
