aaac7fed
 liuqimichale
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/*
* 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) {
(isLine(shape) ? straightLineProto : bezierCurveProto).buildPath(ctx, shape);
},
pointAt: function (t) {
return isLine(this.shape)
? straightLineProto.pointAt.call(this, t)
: bezierCurveProto.pointAt.call(this, t);
},
tangentAt: function (t) {
var shape = this.shape;
var p = isLine(shape)
? [shape.x2 - shape.x1, shape.y2 - shape.y1]
: bezierCurveProto.tangentAt.call(this, t);
return vec2.normalize(p, p);
}
});
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