buffer-geometry

I used STLLoader to load an stl onto a threeJS scene returning a BufferGeometry. I then used myMesh.position.set( x,y,z ) myMesh.rotation.setFromQuaternion ( quaternion , 'XYZ'); to translate the geometry. This effectively changes the myMesh.position myMesh.quaternion Translation is happening in the scene and all works well. I expected that the myMesh.geometry.attributes.position.array would be different before and after the translation - but it remained identical. I want to extract the new veritces from the buffergeometry after translation . I tried to call myMesh.geometry.dynamic = true;

I was just wondering for a while now what exactly "offsets" and "indices / index" are. Offsets are e.g. mentioned in https://github.com/mrdoob/three.js/blob/dev/src/core/BufferGeometry.js and indices were mentioned in IndexedGeometry, however I can't currently find it anymore in the dev tree. Although indices seem rather obvious and although I could dive into the code to figure out some maybe-correct answer for myself I'd love to hear an "official" statement :) Thanks! There are two ways to defining geometries: Non-Indexed "vertices": [ 0, 1, 2, 3, 4, 5, 6, 7, 8, ... ], "normals": [ 0, 1, 2, 3

The problem: I have a point cloud with quite a lot of data points (around one million). When I apply transparency to the rendered points, the transparency somehow does not show what is behind the rendered points As you can see in the example of the marked point, it does not show what it should, it is as if there is a problem with the buffering. I use three.js to create a point cloud using the following "setup": The renderer: this.renderer = new THREE.WebGLRenderer({ canvas: this.canvas, antialias: true }); The material: this.pointMaterial = new THREE.ShaderMaterial( { uniforms: { time: { type:

When using BufferGeometry, how can I assign a material to a face ? Is there something like an array containing the same informations that Face#materialIndex ? BufferGeometry doesn't support MeshFaceMaterial . edap This answer is old. It is possible to add multiple materials to a buffer geometry see how do drawcalls work in three.js? 来源： https://stackoverflow.com/questions/15752173/buffergeometry-faces-materials