Hovering points is imprecise

[vladinator1000]

Hey, I wonder how would you make the onPointerOver event on the Point component more precise?
I tried this but the precision is very rough. Am I going about it the right way? Not sure how you ray cast in Three.

firefox_18lRALfs8N.mp4

import * as THREE from 'three'
import { Canvas} from '@react-three/fiber'
import { Points, Point, PointMaterial, OrbitControls } from '@react-three/drei'
import React, {useState } from 'react'
import * as random from 'maath/random/dist/maath-random.esm'
import { MathUtils } from "three"

function getPoints(n = 10) {
  return Array.from({ length: n }, () => {
    return [MathUtils.randFloatSpread(4), MathUtils.randFloatSpread(4), MathUtils.randFloatSpread(4)]
  }).map((position, index) => {
    const id = index

    return {
      id,
      position: position,
      size: 1,
    }
  })
}


interface PointProps {
  id: string,
  position: number[],
  onHover: (id: string, position: number[]) => void
  onUnhover: (id: string, position: number[]) => void
}

function Star(props: PointProps) {
  const ref = useRef(null)

  return <>
    <Point
      {...props}
      onPointerOver={(event) => {
        console.log('hover', props.id);
        props.onHover && props.onHover(props.id)
      }}
    />

  </>

}

function Stars(props: PointProps) {
  const [sphere] = useState(() => random.inSphere(new Float32Array(5000), { radius: 1.5 }))
  const [points] = useState(() => getPoints(20))
  const [selected, setSelected] = useState(-1)



  return (
    <>
      <Points>
        <PointMaterial color={"green"} size={0.2} />
        {selected > -1 && <Star
          position={points[selected].position}
          key={props.id}
        />}
      </Points>

      <Points ref={ref}>
        <PointMaterial color={"white"} size={0.1} />
        {points.map(props => <Star
          {...props}
          onHover={setSelected}
          key={props.id}
        />)}
      </Points>
    </>
  )
}


export function Constellation() {
  const camera = {
    position: [0, 0, 5]
  }

  return <Canvas camera={camera} style={{
      position: 'absolute',
      top: 0,
      left: 0,
      width: '100%',
      height: '100%',
    }}>
      <Stars />
      <OrbitControls />
  </Canvas>
}

[drcmda]

this has to do with the raycaster in threejs, you need to define a threshold for it

<Canvas raycaster={{ params: { Points: { threshold: 0.1 } } }

https://threejs.org/docs/index.html?q=ray#api/en/core/Raycaster.params

i believe the reason is that a point is fully virtual, it only exists as a vertex and the thickness of it isn't a mesh that can be hit.