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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;
|
|
