bd028579
 易尊强
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import { __extends } from "tslib";
import Path from '../Path.js';
var PI = Math.PI;
var sin = Math.sin;
var cos = Math.cos;
var IsogonShape = (function () {
function IsogonShape() {
this.x = 0;
this.y = 0;
this.r = 0;
this.n = 0;
}
return IsogonShape;
}());
export { IsogonShape };
var Isogon = (function (_super) {
__extends(Isogon, _super);
function Isogon(opts) {
return _super.call(this, opts) || this;
}
Isogon.prototype.getDefaultShape = function () {
return new IsogonShape();
};
Isogon.prototype.buildPath = function (ctx, shape) {
var n = shape.n;
if (!n || n < 2) {
return;
}
var x = shape.x;
var y = shape.y;
var r = shape.r;
var dStep = 2 * PI / n;
var deg = -PI / 2;
ctx.moveTo(x + r * cos(deg), y + r * sin(deg));
for (var i = 0, end = n - 1; i < end; i++) {
deg += dStep;
ctx.lineTo(x + r * cos(deg), y + r * sin(deg));
}
ctx.closePath();
return;
};
return Isogon;
}(Path));
Isogon.prototype.type = 'isogon';
export default Isogon;
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