kopia lustrzana https://github.com/Tldraw/Tldraw
121 wiersze
2.8 KiB
TypeScript
121 wiersze
2.8 KiB
TypeScript
import { v4 as uuid } from 'uuid'
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import * as vec from 'utils/vec'
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import { CircleShape, ColorStyle, DashStyle, ShapeType, SizeStyle } from 'types'
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import { registerShapeUtils } 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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import { translateBounds } from 'utils/utils'
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import { defaultStyle, getShapeStyle } from 'lib/shape-styles'
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const circle = registerShapeUtils<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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seed: Math.random(),
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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: 1,
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isAspectRatioLocked: false,
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isLocked: false,
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isHidden: false,
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style: defaultStyle,
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...props,
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}
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},
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render({ id, radius, style }) {
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const styles = getShapeStyle(style)
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return (
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<circle
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id={id}
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cx={radius}
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cy={radius}
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r={Math.max(0, radius - Number(styles.strokeWidth) / 2)}
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/>
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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 { radius } = shape
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const bounds = {
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minX: 0,
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maxX: radius * 2,
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minY: 0,
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maxY: 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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}
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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.radius, shape.point[1] + shape.radius]
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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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transform(shape, bounds, { initialShape, transformOrigin, scaleX, scaleY }) {
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shape.radius =
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initialShape.radius * Math.min(Math.abs(scaleX), Math.abs(scaleY))
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shape.point = [
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bounds.minX +
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(bounds.width - shape.radius * 2) *
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(scaleX < 0 ? 1 - transformOrigin[0] : transformOrigin[0]),
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bounds.minY +
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(bounds.height - shape.radius * 2) *
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(scaleY < 0 ? 1 - transformOrigin[1] : transformOrigin[1]),
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]
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return this
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},
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transformSingle(shape, bounds, info) {
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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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return this
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},
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canChangeAspectRatio: false,
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})
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export default circle
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