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1829efb | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 | import { useCallback, useEffect, useRef } from 'react'
import { useThree } from '@react-three/fiber'
import { useCameraDollyGestures } from '../camera/useCameraDollyGestures'
import { useButterflyStore } from './store'
import { isEditableTarget } from '../../utils/dom'
export interface ButterflyInput {
keys: React.MutableRefObject<Set<string>>
yaw: React.MutableRefObject<number>
pitch: React.MutableRefObject<number>
distance: React.MutableRefObject<number>
targetDistance: React.MutableRefObject<number>
touchMoveVec: React.MutableRefObject<{ x: number; y: number }>
touchVertical: React.MutableRefObject<number>
}
const PITCH_LIMIT = Math.PI / 2.1
const DOLLY_UNITS_PER_PIXEL = 0.01
export function useButterflyInput(): ButterflyInput {
const { gl } = useThree()
const keys = useRef(new Set<string>())
const yaw = useRef(useButterflyStore.getState().defaultYaw)
const pitch = useRef(useButterflyStore.getState().defaultPitch)
const distance = useRef(useButterflyStore.getState().defaultDistance)
const targetDistance = useRef(useButterflyStore.getState().defaultDistance)
const touchMoveVec = useRef({ x: 0, y: 0 })
const touchVertical = useRef(0)
const applyDolly = useCallback((deltaY: number) => {
const s = useButterflyStore.getState()
targetDistance.current = Math.max(
s.minDistance,
Math.min(s.maxDistance, targetDistance.current + deltaY * DOLLY_UNITS_PER_PIXEL * s.zoomSpeed),
)
}, [])
useCameraDollyGestures({ domElement: gl.domElement, onDollyPixels: applyDolly })
useEffect(() => {
const onKey = (e: KeyboardEvent) => {
if (isEditableTarget(e.target)) {
keys.current.delete(e.code)
return
}
if (e.type === 'keydown') {
keys.current.add(e.code)
if (e.code === 'KeyP') {
const s = useButterflyStore.getState()
s.setParam('paused', !s.paused)
}
} else {
keys.current.delete(e.code)
}
}
window.addEventListener('keydown', onKey)
window.addEventListener('keyup', onKey)
const onBlur = () => keys.current.clear()
window.addEventListener('blur', onBlur)
const onWheel = (e: WheelEvent) => {
e.preventDefault()
const s = useButterflyStore.getState()
targetDistance.current = Math.max(
s.minDistance,
Math.min(s.maxDistance, targetDistance.current + e.deltaY * 0.01 * s.zoomSpeed),
)
}
gl.domElement.addEventListener('wheel', onWheel, { passive: false })
const touches = new Map<number, { x: number; y: number }>()
let moveTouchId: number | null = null
let lookTouchId: number | null = null
let moveOrigin = { x: 0, y: 0 }
const onTouchStart = (e: TouchEvent) => {
const changedTouches = Array.from(e.changedTouches)
for (const t of changedTouches) {
touches.set(t.identifier, { x: t.clientX, y: t.clientY })
}
if (e.touches.length >= 2) {
touchMoveVec.current.x = 0
touchMoveVec.current.y = 0
return
}
for (const t of changedTouches) {
const isLeft = t.clientX < window.innerWidth / 2
if (isLeft && moveTouchId === null) {
moveTouchId = t.identifier
moveOrigin = { x: t.clientX, y: t.clientY }
} else if (!isLeft && lookTouchId === null) {
lookTouchId = t.identifier
}
}
}
const onTouchMove = (e: TouchEvent) => {
for (const t of Array.from(e.changedTouches)) {
const prev = touches.get(t.identifier)
touches.set(t.identifier, { x: t.clientX, y: t.clientY })
if (e.touches.length >= 2) continue
if (t.identifier === lookTouchId && prev) {
const st = useButterflyStore.getState()
const s = st.mouseSensitivity
const ySign = st.invertY ? 1 : -1
yaw.current -= (t.clientX - prev.x) * s * 1.5
pitch.current += (t.clientY - prev.y) * s * 1.5 * ySign
pitch.current = Math.max(-PITCH_LIMIT, Math.min(PITCH_LIMIT, pitch.current))
}
if (t.identifier === moveTouchId) {
const dx = (t.clientX - moveOrigin.x) / 50
const dy = (t.clientY - moveOrigin.y) / 50
touchMoveVec.current.x = Math.max(-1, Math.min(1, dx))
touchMoveVec.current.y = Math.max(-1, Math.min(1, -dy))
}
}
if (e.touches.length >= 2) {
touchMoveVec.current.x = 0
touchMoveVec.current.y = 0
}
}
const onTouchEnd = (e: TouchEvent) => {
for (const t of Array.from(e.changedTouches)) {
touches.delete(t.identifier)
if (t.identifier === moveTouchId) {
moveTouchId = null
touchMoveVec.current.x = 0
touchMoveVec.current.y = 0
}
if (t.identifier === lookTouchId) lookTouchId = null
}
}
gl.domElement.addEventListener('touchstart', onTouchStart, { passive: true })
gl.domElement.addEventListener('touchmove', onTouchMove, { passive: true })
gl.domElement.addEventListener('touchend', onTouchEnd, { passive: true })
gl.domElement.addEventListener('touchcancel', onTouchEnd, { passive: true })
return () => {
window.removeEventListener('keydown', onKey)
window.removeEventListener('keyup', onKey)
window.removeEventListener('blur', onBlur)
gl.domElement.removeEventListener('wheel', onWheel)
gl.domElement.removeEventListener('touchstart', onTouchStart)
gl.domElement.removeEventListener('touchmove', onTouchMove)
gl.domElement.removeEventListener('touchend', onTouchEnd)
gl.domElement.removeEventListener('touchcancel', onTouchEnd)
}
}, [gl])
return { keys, yaw, pitch, distance, targetDistance, touchMoveVec, touchVertical }
}
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