kopia lustrzana https://github.com/Tldraw/Tldraw
150 wiersze
3.4 KiB
TypeScript
150 wiersze
3.4 KiB
TypeScript
import { v4 as uuid } from "uuid"
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import * as vec from "utils/vec"
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import { PolylineShape, ShapeType } from "types"
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import { registerShapeUtils } from "./index"
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import { intersectPolylineBounds } from "utils/intersections"
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import {
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boundsCollide,
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boundsContained,
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boundsContainPolygon,
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} from "utils/bounds"
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import { getBoundsFromPoints, translateBounds } from "utils/utils"
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import { colors } from "state/data"
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const polyline = registerShapeUtils<PolylineShape>({
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boundsCache: new WeakMap([]),
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create(props) {
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return {
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id: uuid(),
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type: ShapeType.Polyline,
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isGenerated: false,
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name: "Polyline",
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parentId: "page0",
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childIndex: 0,
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point: [0, 0],
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points: [[0, 0]],
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rotation: 0,
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style: {
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strokeWidth: 2,
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strokeLinecap: "round",
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strokeLinejoin: "round",
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},
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...props,
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}
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},
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render({ id, points }) {
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return <polyline id={id} points={points.toString()} />
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},
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applyStyles(shape, style) {
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Object.assign(shape.style, style)
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return this
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},
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getBounds(shape) {
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if (!this.boundsCache.has(shape)) {
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const bounds = getBoundsFromPoints(shape.points)
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this.boundsCache.set(shape, bounds)
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}
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return translateBounds(this.boundsCache.get(shape), shape.point)
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},
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getRotatedBounds(shape) {
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return this.getBounds(shape)
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},
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getCenter(shape) {
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const bounds = this.getBounds(shape)
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return [bounds.minX + bounds.width / 2, bounds.minY + bounds.height / 2]
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},
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hitTest(shape, point) {
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let pt = vec.sub(point, shape.point)
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let prev = shape.points[0]
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for (let i = 1; i < shape.points.length; i++) {
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let curr = shape.points[i]
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if (vec.distanceToLineSegment(prev, curr, pt) < 4) {
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return true
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}
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prev = curr
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}
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return false
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},
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hitTestBounds(this, shape, brushBounds) {
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const b = this.getBounds(shape)
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const center = [b.minX + b.width / 2, b.minY + b.height / 2]
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const rotatedCorners = [
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[b.minX, b.minY],
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[b.maxX, b.minY],
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[b.maxX, b.maxY],
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[b.minX, b.maxY],
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].map((point) => vec.rotWith(point, center, shape.rotation))
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return (
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boundsContainPolygon(brushBounds, rotatedCorners) ||
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intersectPolylineBounds(
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shape.points.map((point) => vec.add(point, shape.point)),
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brushBounds
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).length > 0
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)
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},
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rotateTo(shape, rotation) {
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shape.rotation = rotation
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return this
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},
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translateTo(shape, point) {
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shape.point = point
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return this
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},
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transform(shape, bounds, { initialShape, scaleX, scaleY }) {
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const initialShapeBounds = this.getBounds(initialShape)
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shape.points = shape.points.map((_, i) => {
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const [x, y] = initialShape.points[i]
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return [
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bounds.width *
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(scaleX < 0
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? 1 - x / initialShapeBounds.width
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: x / initialShapeBounds.width),
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bounds.height *
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(scaleY < 0
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? 1 - y / initialShapeBounds.height
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: y / initialShapeBounds.height),
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]
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})
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shape.point = [bounds.minX, bounds.minY]
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return this
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},
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transformSingle(shape, bounds, info) {
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this.transform(shape, bounds, info)
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return this
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},
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setParent(shape, parentId) {
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shape.parentId = parentId
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return this
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},
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setChildIndex(shape, childIndex) {
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shape.childIndex = childIndex
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return this
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},
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canTransform: true,
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canChangeAspectRatio: true,
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})
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export default polyline
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