44 lines
1.1 KiB
JavaScript
44 lines
1.1 KiB
JavaScript
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var Path = require("../Path");
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var fixClipWithShadow = require("../helper/fixClipWithShadow");
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/**
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* 扇形
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* @module zrender/graphic/shape/Sector
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*/
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var _default = Path.extend({
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type: 'sector',
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shape: {
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cx: 0,
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cy: 0,
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r0: 0,
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r: 0,
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startAngle: 0,
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endAngle: Math.PI * 2,
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clockwise: true
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},
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brush: fixClipWithShadow(Path.prototype.brush),
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buildPath: function (ctx, shape) {
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var x = shape.cx;
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var y = shape.cy;
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var r0 = Math.max(shape.r0 || 0, 0);
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var r = Math.max(shape.r, 0);
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var startAngle = shape.startAngle;
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var endAngle = shape.endAngle;
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var clockwise = shape.clockwise;
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var unitX = Math.cos(startAngle);
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var unitY = Math.sin(startAngle);
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ctx.moveTo(unitX * r0 + x, unitY * r0 + y);
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ctx.lineTo(unitX * r + x, unitY * r + y);
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ctx.arc(x, y, r, startAngle, endAngle, !clockwise);
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ctx.lineTo(Math.cos(endAngle) * r0 + x, Math.sin(endAngle) * r0 + y);
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if (r0 !== 0) {
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ctx.arc(x, y, r0, endAngle, startAngle, clockwise);
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}
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ctx.closePath();
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}
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});
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module.exports = _default;
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