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60 lines
2.5 KiB
JavaScript
60 lines
2.5 KiB
JavaScript
"use strict";
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var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.drawPolylinePath = drawPolylinePath;
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exports.drawBezierCurvePath = drawBezierCurvePath;
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exports["default"] = void 0;
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var _toConsumableArray2 = _interopRequireDefault(require("@babel/runtime/helpers/toConsumableArray"));
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/**
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* @description Draw a polyline path
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* @param {Object} ctx Canvas 2d context
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* @param {Array} points The points that makes up a polyline
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* @param {Boolean} beginPath Whether to execute beginPath
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* @param {Boolean} closePath Whether to execute closePath
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* @return {Undefined} Void
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*/
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function drawPolylinePath(ctx, points) {
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var beginPath = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
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var closePath = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
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if (!ctx || points.length < 2) return false;
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if (beginPath) ctx.beginPath();
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points.forEach(function (point, i) {
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return point && (i === 0 ? ctx.moveTo.apply(ctx, (0, _toConsumableArray2["default"])(point)) : ctx.lineTo.apply(ctx, (0, _toConsumableArray2["default"])(point)));
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});
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if (closePath) ctx.closePath();
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}
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/**
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* @description Draw a bezier curve path
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* @param {Object} ctx Canvas 2d context
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* @param {Array} points The points that makes up a bezier curve
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* @param {Array} moveTo The point need to excute moveTo
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* @param {Boolean} beginPath Whether to execute beginPath
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* @param {Boolean} closePath Whether to execute closePath
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* @return {Undefined} Void
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*/
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function drawBezierCurvePath(ctx, points) {
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var moveTo = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : false;
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var beginPath = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : false;
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var closePath = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : false;
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if (!ctx || !points) return false;
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if (beginPath) ctx.beginPath();
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if (moveTo) ctx.moveTo.apply(ctx, (0, _toConsumableArray2["default"])(moveTo));
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points.forEach(function (item) {
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return item && ctx.bezierCurveTo.apply(ctx, (0, _toConsumableArray2["default"])(item[0]).concat((0, _toConsumableArray2["default"])(item[1]), (0, _toConsumableArray2["default"])(item[2])));
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});
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if (closePath) ctx.closePath();
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}
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var _default = {
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drawPolylinePath: drawPolylinePath,
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drawBezierCurvePath: drawBezierCurvePath
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};
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exports["default"] = _default; |