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147 | import { Canvas } from '@react-three/fiber'
import Polyhedron from './Polyhedron'
import * as THREE from 'three'
import { Stats, OrbitControls } from '@react-three/drei'
import { useControls } from 'leva'
import { useRef } from 'react'
function Lights() {
const ambientRef = useRef()
const directionalRef = useRef()
const pointRef = useRef()
const spotRef = useRef()
useControls('Ambient Light', {
visible: {
value: false,
onChange: (v) => {
ambientRef.current.visible = v
},
},
color: {
value: 'white',
onChange: (v) => {
ambientRef.current.color = new THREE.Color(v)
},
},
})
useControls('Directional Light', {
visible: {
value: true,
onChange: (v) => {
directionalRef.current.visible = v
},
},
position: {
x: 1,
y: 1,
z: 1,
onChange: (v) => {
directionalRef.current.position.copy(v)
},
},
color: {
value: 'white',
onChange: (v) => {
directionalRef.current.color = new THREE.Color(v)
},
},
})
useControls('Point Light', {
visible: {
value: false,
onChange: (v) => {
pointRef.current.visible = v
},
},
position: {
x: 2,
y: 0,
z: 0,
onChange: (v) => {
pointRef.current.position.copy(v)
},
},
color: {
value: 'white',
onChange: (v) => {
pointRef.current.color = new THREE.Color(v)
},
},
})
useControls('Spot Light', {
visible: {
value: false,
onChange: (v) => {
spotRef.current.visible = v
},
},
position: {
x: 3,
y: 2.5,
z: 1,
onChange: (v) => {
spotRef.current.position.copy(v)
},
},
color: {
value: 'white',
onChange: (v) => {
spotRef.current.color = new THREE.Color(v)
},
},
})
return (
<>
<ambientLight ref={ambientRef} />
<directionalLight ref={directionalRef} />
<pointLight ref={pointRef} />
<spotLight ref={spotRef} />
</>
)
}
export default function App() {
return (
<Canvas camera={{ position: [4, 4, 1.5] }}>
<Lights />
<Polyhedron
name="meshBasicMaterial"
position={[-3, 1, 0]}
material={
new THREE.MeshBasicMaterial({ color: 'yellow', flatShading: true })
}
/>
<Polyhedron
name="meshNormalMaterial"
position={[-1, 1, 0]}
material={new THREE.MeshNormalMaterial({ flatShading: true })}
/>
<Polyhedron
name="meshPhongMaterial"
position={[1, 1, 0]}
material={
new THREE.MeshPhongMaterial({ color: 'lime', flatShading: true })
}
/>
<Polyhedron
name="meshStandardMaterial"
position={[3, 1, 0]}
material={
new THREE.MeshStandardMaterial({
color: 0xff0033,
flatShading: true,
})
}
/>
<OrbitControls target={[2, 2, 0]} />
<axesHelper args={[5]} />
<gridHelper />
<Stats />
</Canvas>
)
}
|
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