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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.
| */
|
| import * as graphic from '../../util/graphic';
|
| var sin = Math.sin;
| var cos = Math.cos;
|
| export default graphic.extendShape({
|
| type: 'ec-ribbon',
|
| shape: {
| cx: 0,
| cy: 0,
| r: 0,
| s0: 0,
| s1: 0,
| t0: 0,
| t1: 0
| },
|
| style: {
| fill: '#000'
| },
|
| buildPath: function (ctx, shape) {
|
| var clockwise = shape.clockwise || false;
|
| var cx = shape.cx;
| var cy = shape.cy;
| var r = shape.r;
| var s0 = shape.s0;
| var s1 = shape.s1;
| var t0 = shape.t0;
| var t1 = shape.t1;
| var sx0 = cx + cos(s0) * r;
| var sy0 = cy + sin(s0) * r;
| var sx1 = cx + cos(s1) * r;
| var sy1 = cy + sin(s1) * r;
| var tx0 = cx + cos(t0) * r;
| var ty0 = cy + sin(t0) * r;
| var tx1 = cx + cos(t1) * r;
| var ty1 = cy + sin(t1) * r;
|
| ctx.moveTo(sx0, sy0);
| ctx.arc(cx, cy, shape.r, s0, s1, !clockwise);
| ctx.bezierCurveTo(
| (cx - sx1) * 0.70 + sx1,
| (cy - sy1) * 0.70 + sy1,
| (cx - tx0) * 0.70 + tx0,
| (cy - ty0) * 0.70 + ty0,
| tx0, ty0
| );
| // Chord to self
| if (shape.s0 === shape.t0 && shape.s1 === shape.t1) {
| return;
| }
| ctx.arc(cx, cy, shape.r, t0, t1, !clockwise);
| ctx.bezierCurveTo(
| (cx - tx1) * 0.70 + tx1,
| (cy - ty1) * 0.70 + ty1,
| (cx - sx0) * 0.70 + sx0,
| (cy - sy0) * 0.70 + sy0,
| sx0, sy0
| );
| }
| });
|
|
