Morphtargetinfluences undefined

Questions
9

Indeed, the geometry was empty. Here is the code should anyone need it:

//geometry
const sphereMesh = new Mesh(new SphereGeometry(2), polyMat)
const tetraGeo = new TetrahedronGeometry(2, 0) //const tetraGeo =  new DecalGeometry( mesh, position, orientation, size );
const tetraMesh = new Mesh(tetraGeo, polyMat)
tetraMesh.rotation.y = Math.PI / 4
tetraMesh.rotation.x = (Math.PI / 4) * 3
const cubeMesh = new Mesh(new BoxGeometry(2, 2, 2), polyMat)
const icoMesh = new Mesh(new IcosahedronGeometry(2, 0), polyMat)
const octoMesh = new Mesh(new TorusKnotGeometry(1.5, 0.5, 80, 15, 2, 3), polyMat)

const sphereSampler = new MeshSurfaceSampler(sphereMesh).build()
const tetraSampler  = new MeshSurfaceSampler(tetraMesh).build()
const cubeSampler   = new MeshSurfaceSampler(cubeMesh).build()
const icoSampler    = new MeshSurfaceSampler(icoMesh).build()
const octoSampler   = new MeshSurfaceSampler(octoMesh).build()

const harmonySamplers = [sphereSampler, tetraSampler, cubeSampler, icoSampler, octoSampler]
const harmonyBuffers = []

//console.log( harmonySamplers[0])

for (let i = 0; i < harmonySamplers.length; i++) {
  const vertices = []
  const tempPosition = new Vector3()
  const tempBufferGeometry = new BufferGeometry()

  for (let j = 0; j < maxParticles; j++) {
    harmonySamplers[i].sample(tempPosition)
    vertices.push(tempPosition.x, tempPosition.y, tempPosition.z)

  }

  geometry.morphAttributes.position[i] = new Float32BufferAttribute(vertices, 3)
  harmonyBuffers[i] = tempBufferGeometry

}

const systemGeom = new BufferGeometry()

    systemGeom.setAttribute('size', new BufferAttribute(OGscales, 1))
    systemGeom.setAttribute('position', new Float32BufferAttribute(OGPos, 3))
    systemGeom.morphAttributes.position = geometry.morphAttributes.position

    const particles = new Points(systemGeom, shaderMat) //mat_P);
    particles.updateMorphTargets()
    particles.morphTargetInfluences[0] = 0


//shader 

const vShader = `
      attribute float size;
      varying vec3 vColor;
     // uniform float morphTargetInfluences[ 5 ];
       #include <morphtarget_pars_vertex>

      void main() {
         #include <begin_vertex>
        #include <morphtarget_vertex>

      vec4 mvPosition = modelViewMatrix * vec4( transformed, 1.0 );
      gl_PointSize = size   ;
      gl_Position = projectionMatrix * mvPosition;

          // gl_Position = vec4( transformed, 1.0 );

   }`

const fShader = `
      uniform vec3 color;
      uniform float alphaTest;
      uniform vec2 u_resolution;
      varying vec3 vColor;

      void main() {
      vec2 xy = gl_PointCoord.xy - vec2(0.5);
      float ll = length(xy);
      gl_FragColor = vec4(color * 10.0 , step(ll, 0.5 ) * alphaTest);
       
   }`

const shaderMat = new ShaderMaterial({
  uniforms: {
    color: { value: new Color(0xffffff) }, // pointTexture: { value: new THREE.TextureLoader().load( 'textures/sprites/disc.png' ) },
    alphaTest: { value: 0.025 },
    size: { value: minScale },
    scale: { value: 1 }
  },
  vertexShader: vShader,
  fragmentShader: fShader,
  blending: AdditiveBlending,
  depthTest: false,
  transparent: true
  //, lighting : true
})


//Updating morph targets
          group.children[0].morphTargetInfluences[i] += 0.001
1 Like