trois/README.md

✨ VueJS 3 + ViteJS + ThreeJS ⚡

I wanted to try to write a lib similar to react-three-fiber but for VueJS.

Demos : https://troisjs.github.io/trois/

I started from scratch... I don't know if I will have time to maintain this, but feel free to participate :)

I will try to rewrite some of my WebGL demos to see if this little toy can do the job.

Trois is a french word, it means Three.

HMR

Thanks to VueJS/ViteJS, TroisJS use watchers and HMR to update ThreeJS objects when you update a template. This means the result in your browser will be automatically updated without reloading all the stuff. This is really helpful when you are creating a TroisJS Scene.

• HMR
  • Scene : add or remove objects (lights, meshes)
  • PerspectiveCamera : aspect, far, fov, near, position
  • Light : castShadow, color, intensity, position, target
    • SpotLight : angle, decay, distance, penumbra
    • ...
  • Material : color, depthTest, depthWrite, fog, opacity, transparent
    • StandardMaterial : emissive, emissiveIntensity, metalness, roughness
    • ...
  • Mesh : materialId, position, rotation, scale, castShadow, receiveShadow
    • Box (geometry replace) : size, width, height, depth
    • Plane (geometry replace) : width, height, widthSegments, heightSegments
    • Sphere (geometry replace) : radius, widthSegments, heightSegments
    • Text (geometry replace) : all props except fontSrc (wip)
    • ...
  • PostProcessing
    • BokehPass : focus, aperture, maxblur
    • FilmPass : noiseIntensity, scanlinesIntensity, scanlinesCount, grayscale
    • HalftonePass : shape, radius, rotateR, rotateG, rotateB, scatter
    • UnrealBloomPass : strength, radius, threshold
    • ...
  • ...

Features

• Lights
  • AmbientLight
  • DirectionalLight
  • PointLight
  • SpotLight
  • ...
• Materials
  • Basic
  • Lambert
  • Phong
  • Standard
  • Physical
  • SubSurface
  • ...
• Geometries
  • Box
  • Sphere
  • ...
• Meshes
  • Box
  • Image (wip)
  • InstancedMesh
  • Plane
  • Sphere
  • Sprite
  • Text
  • ...
• Post Processing
  • EffectComposer
  • Renderpass
  • UnrealBloomPass
  • ...

Installation

yarn add troisjs

Vue plugin

import { TroisJSVuePlugin } from 'troisjs';
app.use(TroisJSVuePlugin);

PoC

I first made a simple Proof of Concept, take a look at Demo1.vue :

<template>
  <Renderer ref="renderer">
    <Camera :position="{ z: 100 }"></Camera>
    <LambertMaterial id="material"></LambertMaterial>
    <Scene>
      <PointLight :position="{ y: 50, z: 50 }"></PointLight>
      <Box ref="box" :size="10" :rotation="{ y: Math.PI / 4, z: Math.PI / 4 }" material="material"></Box>
    </Scene>
  </Renderer>
</template>

<script>
export default {
  mounted() {
    const renderer = this.$refs.renderer;
    const box = this.$refs.box.mesh;

    renderer.onBeforeRender(() => {
      box.rotation.x += 0.01;
    });
  },
};
</script>

InstancedMesh

Take a look at Demo2.vue.

Template

<Renderer ref="renderer" :orbit-ctrl="{ enableDamping: true, dampingFactor: 0.05 }" mouse-move="body" :mouse-raycast="true">
  <Camera :position="{ z: 200 }"></Camera>
  <StandardMaterial id="material" :transparent="true" :opacity="0.9" :metalness="0.8" :roughness="0.5"></StandardMaterial>
  <Scene id="scene1" background="#000000">
    <AmbientLight color="#808080"></AmbientLight>
    <PointLight color="#ff6000"></PointLight>
    <PointLight ref="light" color="#0060ff" :intensity="0.5" :position="{ z: 200 }"></PointLight>
    <InstancedMesh ref="imesh" material="material" :count="NUM_INSTANCES">
      <BoxGeometry :width="2" :height="2" :depth="10"></BoxGeometry>
    </InstancedMesh>
  </Scene>
</Renderer>

GLTF

Take a look at DemoGLTF.vue.

<GLTFViewer src="test.glb" :camera-position="{ z: 1 }">
  <AmbientLight></AmbientLight>
</GLTFViewer>

Dev

git clone https://github.com/troisjs/trois
cd trois
yarn
yarn dev