META-INF.assets.rjzjh.echarts.src.chart.chord.Ribbon.js Maven / Gradle / Ivy
define(function (require) {
var sin = Math.sin;
var cos = Math.cos;
return require('../../util/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
);
}
});
});