tldraw/lib/shape-utils/line.tsx
2021-05-23 14:46:04 +01:00

108 lines
2.2 KiB
TypeScript

import { v4 as uuid } from "uuid"
import * as vec from "utils/vec"
import { LineShape, ShapeType } from "types"
import { registerShapeUtils } from "./index"
import { boundsContained } from "utils/bounds"
import { intersectCircleBounds } from "utils/intersections"
import { DotCircle } from "components/canvas/misc"
import { translateBounds } from "utils/utils"
const line = registerShapeUtils<LineShape>({
boundsCache: new WeakMap([]),
create(props) {
return {
id: uuid(),
type: ShapeType.Line,
isGenerated: false,
name: "Line",
parentId: "page0",
childIndex: 0,
point: [0, 0],
direction: [0, 0],
rotation: 0,
style: {
fill: "#c6cacb",
stroke: "#000",
},
...props,
}
},
render({ id, direction }) {
const [x1, y1] = vec.add([0, 0], vec.mul(direction, 100000))
const [x2, y2] = vec.sub([0, 0], vec.mul(direction, 100000))
return (
<g id={id}>
<line x1={x1} y1={y1} x2={x2} y2={y2} />
<DotCircle cx={0} cy={0} r={4} />
</g>
)
},
getBounds(shape) {
if (!this.boundsCache.has(shape)) {
const bounds = {
minX: 0,
maxX: 1,
minY: 0,
maxY: 1,
width: 1,
height: 1,
}
this.boundsCache.set(shape, bounds)
}
return translateBounds(this.boundsCache.get(shape), shape.point)
},
getRotatedBounds(shape) {
return this.getBounds(shape)
},
getCenter(shape) {
return shape.point
},
hitTest(shape, test) {
return true
},
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
},
transform(shape, bounds) {
shape.point = [bounds.minX, bounds.minY]
return shape
},
transformSingle(shape, bounds, info) {
return this.transform(shape, bounds, info)
},
canTransform: false,
canChangeAspectRatio: false,
})
export default line