159 lines
3.7 KiB
TypeScript
159 lines
3.7 KiB
TypeScript
import { v4 as uuid } from "uuid"
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import * as vec from "utils/vec"
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import { CircleShape, ShapeType, TransformCorner, TransformEdge } from "types"
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import { createShape } from "./index"
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import { boundsContained } from "utils/bounds"
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import { intersectCircleBounds } from "utils/intersections"
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import { pointInCircle } from "utils/hitTests"
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const circle = createShape<CircleShape>({
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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.Circle,
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isGenerated: false,
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name: "Circle",
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parentId: "page0",
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childIndex: 0,
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point: [0, 0],
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rotation: 0,
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radius: 20,
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style: {
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fill: "#777",
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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, radius }) {
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return <circle id={id} cx={radius} cy={radius} r={radius} />
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},
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getBounds(shape) {
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if (this.boundsCache.has(shape)) {
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return this.boundsCache.get(shape)
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}
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const {
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point: [x, y],
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radius,
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} = shape
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const bounds = {
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minX: x,
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maxX: x + radius * 2,
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minY: y,
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maxY: y + radius * 2,
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width: radius * 2,
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height: radius * 2,
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}
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this.boundsCache.set(shape, bounds)
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return bounds
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},
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hitTest(shape, point) {
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return pointInCircle(
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point,
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vec.addScalar(shape.point, shape.radius),
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shape.radius
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)
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},
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hitTestBounds(shape, bounds) {
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const shapeBounds = this.getBounds(shape)
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return (
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boundsContained(shapeBounds, bounds) ||
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intersectCircleBounds(
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vec.addScalar(shape.point, shape.radius),
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shape.radius,
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bounds
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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) {
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return shape
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},
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transform(shape, bounds, { anchor }) {
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// Set the new corner or position depending on the anchor
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switch (anchor) {
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case TransformCorner.TopLeft: {
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shape.radius = Math.min(bounds.width, bounds.height) / 2
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shape.point = [
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bounds.maxX - shape.radius * 2,
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bounds.maxY - shape.radius * 2,
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]
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break
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}
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case TransformCorner.TopRight: {
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shape.radius = Math.min(bounds.width, bounds.height) / 2
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shape.point = [bounds.minX, bounds.maxY - shape.radius * 2]
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break
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}
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case TransformCorner.BottomRight: {
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shape.radius = Math.min(bounds.width, bounds.height) / 2
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shape.point = [bounds.minX, bounds.minY]
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break
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}
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case TransformCorner.BottomLeft: {
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shape.radius = Math.min(bounds.width, bounds.height) / 2
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shape.point = [bounds.maxX - shape.radius * 2, bounds.minY]
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break
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}
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case TransformEdge.Top: {
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shape.radius = bounds.height / 2
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shape.point = [
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bounds.minX + (bounds.width / 2 - shape.radius),
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bounds.minY,
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]
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break
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}
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case TransformEdge.Right: {
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shape.radius = bounds.width / 2
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shape.point = [
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bounds.maxX - shape.radius * 2,
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bounds.minY + (bounds.height / 2 - shape.radius),
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]
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break
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}
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case TransformEdge.Bottom: {
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shape.radius = bounds.height / 2
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shape.point = [
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bounds.minX + (bounds.width / 2 - shape.radius),
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bounds.maxY - shape.radius * 2,
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]
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break
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}
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case TransformEdge.Left: {
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shape.radius = bounds.width / 2
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shape.point = [
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bounds.minX,
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bounds.minY + (bounds.height / 2 - shape.radius),
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]
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break
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}
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}
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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 circle
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