autodesk-forge - 贴花未显示在 Autodesk 查看器中

Question

使用 Autodesk 查看器时，贴花似乎没有按预期显示。上图正确显示贴花（未在 Autodesk Viewer 中渲染），下图没有贴花（在 Autodesk 查看器中渲染）。

为什么会这样？如何使贴花在 Autodesk Viewer 中工作？

源文件在这里。

Answer 1

这是我的代码示例。我在 Forge 上导入了 STEP 文件，并在我的 node.js 服务器上复制了 RefdFile_1.png 文件。

var attenuationVertexShader =`
  varying vec2 vUv;
  varying vec3 vPosition;
  void main() {
    vUv = uv;
    vec4 mvPosition = modelViewMatrix * vec4(position, 1.0);
    gl_Position = projectionMatrix * mvPosition;
  }
  ` ;

var attenuationFragmentShader = `
  varying vec2 vUv;
  uniform sampler2D checkerboard;
  void main() {
    gl_FragColor = texture2D(checkerboard, vec2 (vUv.x * 0.1263, vUv.y * 0.166)) ;
  }
` ;

var dbId =4 ;
var fragId =0 ;
var texturePath ="/RefdFile_1.png" ;
var material =null ;

oViewer =new Autodesk.Viewing.Private.GuiViewer3D ($("#viewer") [0], {}) ; // With toolbar
Autodesk.Viewing.Initializer (options, function () {
    oViewer.initialize () ;
    oViewer.addEventListener (Autodesk.Viewing.GEOMETRY_LOADED_EVENT, function (event) {
        oViewer.fitToView (true) ;
        setTimeout (function () { oViewer.autocam.setHomeViewFrom (oViewer.navigation.getCamera ()) ; }, 1000) ;
        setTimeout (createTexture, 500) ;
    }) ;
    oViewer.setGroundReflection (false) ;
    oViewer.setGroundShadow (false) ;
    oViewer.load (myurn) ;
}) ;

function createTexture () {
    var loader =new THREE.TextureLoader () ;
    loader.load (texturePath, function (texture) {
        texture.minFilter =THREE.LinearMipMapLinearFilter ; // THREE.LinearMipMapLinearFilter
        texture.magFilter =THREE.LinearFilter ;

        var uniforms ={
            checkerboard: {
                type: 't',
                value: texture
            }
        } ;
        material =new THREE.ShaderMaterial ({
          uniforms: uniforms,
          vertexShader: attenuationVertexShader,
          fragmentShader: attenuationFragmentShader,
          side: THREE.DoubleSide
        }) ;
        oViewer.impl.matman ().removeMaterial ('shaderMaterial') ;
        oViewer.impl.matman ().addMaterial ('shaderMaterial', material, true) ;
        var floor_mesh_render =oViewer.impl.getRenderProxy (oViewer.model, fragId) ;
        oViewer.model.getFragmentList ().setMaterial (fragId, material) ;
        oViewer.impl.invalidate (true) ;
    }) ;
}