tldraw/lib/shapes/ray.tsx

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2021-05-14 12:44:23 +00:00
import { v4 as uuid } from "uuid"
import * as vec from "utils/vec"
import { RayShape, ShapeType } from "types"
import { createShape } from "./index"
import { boundsContained } from "utils/bounds"
import { intersectCircleBounds } from "utils/intersections"
const ray = createShape<RayShape>({
boundsCache: new WeakMap([]),
create(props) {
return {
id: uuid(),
type: ShapeType.Ray,
name: "Ray",
parentId: "page0",
childIndex: 0,
point: [0, 0],
vector: [0, 0],
rotation: 0,
style: {},
...props,
}
},
render({ id }) {
return <circle id={id} cx={4} cy={4} r={4} />
},
getBounds(shape) {
if (this.boundsCache.has(shape)) {
return this.boundsCache.get(shape)
}
const {
point: [x, y],
} = shape
const bounds = {
minX: x,
maxX: x + 8,
minY: y,
maxY: y + 8,
width: 8,
height: 8,
}
this.boundsCache.set(shape, bounds)
return bounds
},
hitTest(shape, test) {
return vec.dist(shape.point, test) < 4
},
hitTestBounds(this, shape, brushBounds) {
const shapeBounds = this.getBounds(shape)
return (
boundsContained(shapeBounds, brushBounds) ||
intersectCircleBounds(shape.point, 4, brushBounds).length > 0
)
},
rotate(shape) {
return shape
},
translate(shape, delta) {
shape.point = vec.add(shape.point, delta)
return shape
},
scale(shape, scale: number) {
return shape
},
stretch(shape, scaleX: number, scaleY: number) {
return shape
},
transform(shape, bounds) {
return shape
},
})
export default ray