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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| import { effect } from '@preact/signals-core' | ||
| import { | ||
| ComponentPropsWithoutRef, | ||
| ReactNode, | ||
| RefObject, | ||
| forwardRef, | ||
| useEffect, | ||
| useImperativeHandle, | ||
| useMemo, | ||
| useRef, | ||
| } from 'react' | ||
| import { HalfFloatType, LinearFilter, Scene, WebGLRenderTarget } from 'three' | ||
| import { Image } from './image.js' | ||
| import { InjectState, RootState, createPortal, useFrame, useStore } from '@react-three/fiber' | ||
| import type { DomEvent } from '@react-three/fiber/dist/declarations/src/core/events.js' | ||
| import type { ComponentInternals } from './utils.js' | ||
|
|
||
| export const Portal = forwardRef< | ||
| ComponentInternals, | ||
| { | ||
| frames?: number | ||
| renderPriority?: number | ||
| eventPriority?: number | ||
| resolution?: number | ||
| children?: ReactNode | ||
| } & Omit<ComponentPropsWithoutRef<typeof Image>, 'src' | 'fit'> | ||
| >(({ children, resolution = 1, frames = Infinity, renderPriority = 0, eventPriority = 0, ...props }, ref) => { | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| const fbo = useMemo( | ||
| () => | ||
| new WebGLRenderTarget(1, 1, { | ||
| minFilter: LinearFilter, | ||
| magFilter: LinearFilter, | ||
| type: HalfFloatType, | ||
| }), | ||
| [], | ||
| ) | ||
| const imageRef = useRef<ComponentInternals>(null) | ||
| const injectState = useMemo<InjectState>( | ||
| () => ({ | ||
| events: { compute: uvCompute.bind(null, imageRef), priority: eventPriority }, | ||
| size: { width: 1, height: 1, left: 0, top: 0 }, | ||
| }), | ||
| [eventPriority], | ||
| ) | ||
| useEffect(() => { | ||
| if (imageRef.current == null) { | ||
| return | ||
| } | ||
| const { size } = imageRef.current | ||
| const unsubscribeSetSize = effect(() => { | ||
| const [width, height] = size.value | ||
| fbo.setSize(width, height) | ||
| injectState.size!.width = width | ||
| injectState.size!.height = height | ||
| }) | ||
| return () => { | ||
| unsubscribeSetSize() | ||
| fbo.dispose() | ||
| } | ||
| }, [fbo, injectState]) | ||
| useImperativeHandle(ref, () => imageRef.current!, []) | ||
| const vScene = useMemo(() => new Scene(), []) | ||
| return ( | ||
| <> | ||
| {createPortal( | ||
| <ChildrenToFBO imageRef={imageRef} renderPriority={renderPriority} frames={frames} fbo={fbo}> | ||
| {children} | ||
| {/* Without an element that receives pointer events state.pointer will always be 0/0 */} | ||
| <group onPointerOver={() => null} /> | ||
| </ChildrenToFBO>, | ||
| vScene, | ||
| injectState, | ||
| )} | ||
| <Image {...props} src={fbo.texture} fit="fill" keepAspectRatio={false} ref={imageRef} /> | ||
| </> | ||
| ) | ||
| }) | ||
|
|
||
| function uvCompute( | ||
| { current }: RefObject<ComponentInternals>, | ||
| event: DomEvent, | ||
| state: RootState, | ||
| previous?: RootState, | ||
| ) { | ||
| if (current == null || previous == null) { | ||
| return false | ||
| } | ||
| // First we call the previous state-onion-layers compute, this is what makes it possible to nest portals | ||
| if (!previous.raycaster.camera) previous.events.compute?.(event, previous, previous.previousRoot?.getState()) | ||
| // We run a quick check against the parent, if it isn't hit there's no need to raycast at all | ||
| const [intersection] = previous.raycaster.intersectObject(current.interactionPanel) | ||
| if (!intersection) return false | ||
| // We take that hits uv coords, set up this layers raycaster, et voilà, we have raycasting on arbitrary surfaces | ||
| const uv = intersection.uv | ||
| if (!uv) return false | ||
| state.raycaster.setFromCamera(state.pointer.set(uv.x * 2 - 1, uv.y * 2 - 1), state.camera) | ||
| } | ||
|
|
||
| function ChildrenToFBO({ | ||
| frames, | ||
| renderPriority, | ||
| children, | ||
| fbo, | ||
| imageRef, | ||
| }: { | ||
| frames: number | ||
| renderPriority: number | ||
| children: ReactNode | ||
| fbo: WebGLRenderTarget | ||
| imageRef: RefObject<ComponentInternals> | ||
| }) { | ||
| const store = useStore() | ||
| useEffect(() => { | ||
| if (imageRef.current == null) { | ||
| return | ||
| } | ||
| const { size } = imageRef.current | ||
| return effect(() => { | ||
| const [width, height] = size.value | ||
| store.setState({ size: { width, height, top: 0, left: 0 } }) | ||
| }) | ||
| }) | ||
| let count = 0 | ||
| let oldAutoClear | ||
| let oldXrEnabled | ||
| useFrame((state) => { | ||
| if (frames === Infinity || count < frames) { | ||
| oldAutoClear = state.gl.autoClear | ||
| oldXrEnabled = state.gl.xr.enabled | ||
| state.gl.autoClear = true | ||
| state.gl.xr.enabled = false | ||
| state.gl.setRenderTarget(fbo) | ||
| state.gl.render(state.scene, state.camera) | ||
| state.gl.setRenderTarget(null) | ||
| state.gl.autoClear = oldAutoClear | ||
| state.gl.xr.enabled = oldXrEnabled | ||
| count++ | ||
| } | ||
| }, renderPriority) | ||
| return <>{children}</> | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| import { ComponentPropsWithoutRef } from 'react' | ||
| import { Image } from './image.js' | ||
| import { useLoader } from '@react-three/fiber' | ||
| import { TextureLoader } from 'three' | ||
|
|
||
| export function SuspendingImage({ | ||
| src, | ||
| ...props | ||
| }: Omit<ComponentPropsWithoutRef<typeof Image>, 'src'> & { src: string }) { | ||
| const texture = useLoader(TextureLoader, src) | ||
| return <Image src={texture} {...props} /> | ||
| } |