| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /** |
| * Line path for bezier and straight line draw |
| */ |
| import * as graphic from '../../util/graphic'; |
| import * as vec2 from 'zrender/src/core/vector'; |
| var straightLineProto = graphic.Line.prototype; |
| var bezierCurveProto = graphic.BezierCurve.prototype; |
| |
| function isLine(shape) { |
| return isNaN(+shape.cpx1) || isNaN(+shape.cpy1); |
| } |
| |
| export default graphic.extendShape({ |
| type: 'ec-line', |
| style: { |
| stroke: '#000', |
| fill: null |
| }, |
| shape: { |
| x1: 0, |
| y1: 0, |
| x2: 0, |
| y2: 0, |
| percent: 1, |
| cpx1: null, |
| cpy1: null |
| }, |
| buildPath: function (ctx, shape) { |
| this[isLine(shape) ? '_buildPathLine' : '_buildPathCurve'](ctx, shape); |
| }, |
| _buildPathLine: straightLineProto.buildPath, |
| _buildPathCurve: bezierCurveProto.buildPath, |
| pointAt: function (t) { |
| return this[isLine(this.shape) ? '_pointAtLine' : '_pointAtCurve'](t); |
| }, |
| _pointAtLine: straightLineProto.pointAt, |
| _pointAtCurve: bezierCurveProto.pointAt, |
| tangentAt: function (t) { |
| var shape = this.shape; |
| var p = isLine(shape) ? [shape.x2 - shape.x1, shape.y2 - shape.y1] : this._tangentAtCurve(t); |
| return vec2.normalize(p, p); |
| }, |
| _tangentAtCurve: bezierCurveProto.tangentAt |
| }); |