kopia lustrzana https://github.com/Tldraw/Tldraw
114 wiersze
2.4 KiB
TypeScript
114 wiersze
2.4 KiB
TypeScript
import { v4 as uuid } from "uuid"
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import * as vec from "utils/vec"
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import { EllipseShape, ShapeType } from "types"
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import { createShape } from "./index"
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import { boundsContained } from "utils/bounds"
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import { intersectEllipseBounds } from "utils/intersections"
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import { pointInEllipse } from "utils/hitTests"
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import { translateBounds } from "utils/utils"
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const ellipse = createShape<EllipseShape>({
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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.Ellipse,
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isGenerated: false,
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name: "Ellipse",
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parentId: "page0",
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childIndex: 0,
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point: [0, 0],
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radiusX: 20,
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radiusY: 20,
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rotation: 0,
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style: {
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fill: "rgba(142, 143, 142, 1.000)",
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stroke: "#000",
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},
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...props,
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}
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},
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render({ id, radiusX, radiusY }) {
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return (
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<ellipse id={id} cx={radiusX} cy={radiusY} rx={radiusX} ry={radiusY} />
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)
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},
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getBounds(shape) {
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if (!this.boundsCache.has(shape)) {
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const { radiusX, radiusY } = shape
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const bounds = {
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minX: 0,
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maxX: radiusX * 2,
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minY: 0,
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maxY: radiusY * 2,
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width: radiusX * 2,
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height: radiusY * 2,
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}
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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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return [shape.point[0] + shape.radiusX, shape.point[1] + shape.radiusY]
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},
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hitTest(shape, point) {
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return pointInEllipse(
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point,
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vec.add(shape.point, [shape.radiusX, shape.radiusY]),
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shape.radiusX,
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shape.radiusY
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)
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},
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hitTestBounds(this, shape, brushBounds) {
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const shapeBounds = this.getBounds(shape)
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return (
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boundsContained(shapeBounds, brushBounds) ||
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intersectEllipseBounds(
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vec.add(shape.point, [shape.radiusX, shape.radiusY]),
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shape.radiusX,
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shape.radiusY,
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brushBounds
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).length > 0
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)
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},
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rotate(shape) {
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return shape
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},
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translate(shape, delta) {
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shape.point = vec.add(shape.point, delta)
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return shape
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},
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scale(shape, scale: number) {
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return shape
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},
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transform(shape, bounds) {
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shape.point = [bounds.minX, bounds.minY]
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shape.radiusX = bounds.width / 2
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shape.radiusY = bounds.height / 2
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return shape
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},
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canTransform: true,
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})
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export default ellipse
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