tldraw_0/lib/shapes/circle.tsx

import { v4 as uuid } from "uuid"
import * as vec from "utils/vec"
import { BaseLibShape, CircleShape, ShapeType } from "types"

const Circle: BaseLibShape<ShapeType.Circle> = {
  create(props): CircleShape {
    return {
      id: uuid(),
      type: ShapeType.Circle,
      name: "Circle",
      parentId: "page0",
      childIndex: 0,
      point: [0, 0],
      radius: 20,
      rotation: 0,
      style: {},
      ...props,
    }
  },

  render({ id, radius }) {
    return <circle id={id} cx={radius} cy={radius} r={radius} />
  },

  getBounds(shape) {
    const {
      point: [cx, cy],
      radius,
    } = shape

    return {
      minX: cx,
      maxX: cx + radius * 2,
      minY: cy,
      maxY: cy + radius * 2,
      width: radius * 2,
      height: radius * 2,
    }
  },

  hitTest(shape, test) {
    return (
      vec.dist(vec.addScalar(shape.point, shape.radius), test) < shape.radius
    )
  },

  rotate(shape) {
    return shape
  },

  translate(shape) {
    return shape
  },

  scale(shape, scale: number) {
    return shape
  },

  stretch(shape, scaleX: number, scaleY: number) {
    return shape
  },
}

export default Circle