bd028579
 易尊强
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/**
* 心形
*/
import Path, { PathProps } from '../Path';
export class HeartShape {
cx = 0
cy = 0
width = 0
height = 0
}
export interface HeartProps extends PathProps {
shape?: Partial<HeartShape>
}
class Heart extends Path<HeartProps> {
shape: HeartShape
constructor(opts?: HeartProps) {
super(opts);
}
getDefaultShape() {
return new HeartShape();
}
buildPath(ctx: CanvasRenderingContext2D, shape: HeartShape) {
const x = shape.cx;
const y = shape.cy;
const a = shape.width;
const b = shape.height;
ctx.moveTo(x, y);
ctx.bezierCurveTo(
x + a / 2, y - b * 2 / 3,
x + a * 2, y + b / 3,
x, y + b
);
ctx.bezierCurveTo(
x - a * 2, y + b / 3,
x - a / 2, y - b * 2 / 3,
x, y
);
}
}
Heart.prototype.type = 'heart';
export default Heart;
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