截图中的墙，通过GLB格式导出后，导入到小程序xr-frame中，会显示一个黑不溜秋的东西，很难调节。
截图中的管子，通过点位数据导出，通过registerGeometry插入，会变成一个另类的东西。
【后面的那个白色就是那个管子】
附上插入代码【在xr-basic例子中插入】：
const xr = wx.getXrFrameSystem();
const xrScene = this.scene = detail.value;
let scene = xrScene;
console.log('xr-scene', xrScene);
let defaultVertexLayoutInfo = {
attributes: [
{
name: "a_position",
format: xr.EVertexFormat.FLOAT3,
offset: 0,
usage: xr.EVertexLayoutUsage.POSITION
},
{
name: "a_normal",
format: xr.EVertexFormat.FLOAT3,
offset: 12,
usage: xr.EVertexLayoutUsage.NORMAL,
},
{
name: "a_texCoord",
format: xr.EVertexFormat.FLOAT2,
offset: 24,
usage: xr.EVertexLayoutUsage.UV0
},
{
name: "a_color",
format: xr.EVertexFormat.FLOAT4,
offset: 32,
usage: xr.EVertexLayoutUsage.COLOR
}
],
stride: 48
};
let vertexs = [];
let indices = [];
vertexs.push(...[-0.0015113172000000002, 0.0143994946, -0.047332552, 0.030442, -0.468643, -0.882863, 0.75, 1, 1, 1, 1, 1, 0.004940709600000001, -0.0470739829, -0.014478588400000002, 0.198291, -0.914063, -0.353793, 1, 0.968106, 1, 1, 1, 1, 0.0015113172000000002, -0.0143994946, 0.047332552, 0.187446, -0.864073, 0.467164, 0.5, 1, 1, 1, 1, 1, -0.004940709600000001, 0.0470739829, 0.014478588400000002, 0.140296, -0.987724, 0.06869, 0.75, 0.968106, 1, 1, 1, 1, 0.3285223183, 0.0358379627, -0.047332552, -0.066037, 0.46492, 0.882886, 0.25, 1, 1, 1, 1, 1, 0.39032958770000004, 0.036529722900000006, -0.014478588400000002, 0.038404, 0.994907, -0.093196, 0.5, 0.968106, 1, 1, 1, 1, 0.3574776817, 0.0361620373, 0.047332552, 0.034136, 0.884344, -0.465586, 0, 1, 1, 1, 1, 1, 0.2956704123, 0.0354702771, 0.014478588400000002, -0.064795, 0.997491, -0.028504, 0.25, 0.968106, 1, 1, 1, 1, -0.055189746100000006, 4.0988116985000005, -0.047332552, 0.468519, 0.044248, -0.882344, 0.75, 0.968106, 1, 1, 1, 1, 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indices.push(...[1, 4, 0, 4, 1, 5, 2, 5, 1, 5, 2, 6, 3, 6, 2, 6, 3, 7, 0, 7, 3, 7, 0, 4, 5, 8, 4, 8, 5, 9, 6, 9, 5, 9, 6, 10, 7, 10, 6, 10, 7, 11, 4, 11, 7, 11, 4, 8, 9, 12, 8, 12, 9, 13, 10, 13, 9, 13, 10, 14, 11, 14, 10, 14, 11, 15, 8, 15, 11, 15, 8, 12, 13, 16, 12, 16, 13, 17, 14, 17, 13, 17, 14, 18, 15, 18, 14, 18, 15, 19, 12, 19, 15, 19, 12, 16, 17, 20, 16, 20, 17, 21, 18, 21, 17, 21, 18, 22, 19, 22, 18, 22, 19, 23, 16, 23, 19, 23, 16, 20, 1, 0, 3, 1, 3, 2, 21, 23, 20, 21, 22, 23, 25, 32, 24, 32, 25, 33, 26, 33, 25, 33, 26, 34, 27, 34, 26, 34, 27, 35, 28, 35, 27, 35, 28, 36, 29, 36, 28, 36, 29, 37, 30, 37, 29, 37, 30, 38, 31, 38, 30, 38, 31, 39, 24, 39, 31, 39, 24, 32, 33, 40, 32, 40, 33, 41, 34, 41, 33, 41, 34, 42, 35, 42, 34, 42, 35, 43, 36, 43, 35, 43, 36, 44, 37, 44, 36, 44, 37, 4, 38, 45, 37, 45, 38, 46, 39, 46, 38, 46, 39, 47, 32, 47, 39, 47, 32, 40, 41, 48, 40, 48, 41, 49, 42, 49, 41, 49, 42, 50, 43, 50, 42, 50, 43, 51, 44, 51, 43, 51, 44, 52, 45, 52, 44, 52, 45, 53, 46, 53, 45, 53, 46, 54, 47, 54, 46, 54, 47, 55, 40, 55, 47, 55, 40, 48, 49, 56, 48, 56, 49, 57, 50, 57, 49, 57, 50, 58, 51, 58, 50, 58, 51, 59, 52, 59, 51, 59, 52, 60, 53, 60, 52, 60, 53, 61, 54, 61, 53, 61, 54, 62, 55, 62, 54, 62, 55, 63, 48, 63, 55, 63, 48, 56, 57, 64, 56, 64, 57, 65, 58, 65, 57, 65, 58, 66, 59, 66, 58, 66, 59, 67, 60, 67, 59, 67, 60, 68, 61, 68, 60, 68, 61, 69, 62, 69, 61, 69, 62, 70, 63, 70, 62, 70, 63, 71, 56, 71, 63, 71, 56, 64, 25, 24, 31, 25, 31, 30, 25, 30, 29, 25, 29, 28, 25, 28, 27, 25, 27, 26, 65, 71, 64, 65, 70, 71, 65, 69, 70, 65, 68, 69, 65, 67, 68, 65, 66, 67, 1, 4, 0, 4, 1, 5, 2, 5, 1, 5, 2, 6, 3, 6, 2, 6, 3, 7, 0, 7, 3, 7, 0, 4, 5, 8, 4, 8, 5, 9, 6, 9, 5, 9, 6, 10, 7, 10, 6, 10, 7, 11, 4, 11, 7, 11, 4, 8, 9, 12, 8, 12, 9, 13, 10, 13, 9, 13, 10, 14, 11, 14, 10, 14, 11, 15, 8, 15, 11, 15, 8, 12, 13, 16, 12, 16, 13, 17, 14, 17, 13, 17, 14, 18, 15, 18, 14, 18, 15, 19, 12, 19, 15, 19, 12, 16, 17, 20, 16, 20, 17, 21, 18, 21, 17, 21, 18, 22, 19, 22, 18, 22, 19, 23, 16, 23, 19, 23, 16, 20, 1, 0, 3, 1, 3, 2, 21, 23, 20, 21, 22, 23, 25, 32, 24, 32, 25, 33, 26, 33, 25, 33, 26, 34, 27, 34, 26, 34, 27, 35, 28, 35, 27, 35, 28, 36, 29, 36, 28, 36, 29, 37, 30, 37, 29, 37, 30, 38, 31, 38, 30, 38, 31, 39, 24, 39, 31, 39, 24, 32, 33, 40, 32, 40, 33, 41, 34, 41, 33, 41, 34, 42, 35, 42, 34, 42, 35, 43, 36, 43, 35, 43, 36, 44, 37, 44, 36, 44, 37, 45, 38, 45, 37, 45, 38, 46, 39, 46, 38, 4, 39, 47, 32, 47, 39, 47, 32, 40, 41, 48, 40, 48, 41, 49, 42, 49, 41, 49, 42, 50, 43, 50, 42, 50, 43, 51, 44, 51, 43, 51, 44, 52, 45, 52, 44, 52, 45, 53, 46, 53, 45, 53, 46, 54, 47, 54, 46, 54, 47, 55, 40, 55, 47, 55, 40, 48, 49, 56, 48, 56, 49, 57, 50, 57, 49, 57, 50, 58, 51, 58, 50, 58, 51, 59, 52, 59, 51, 59, 52, 60, 53, 60, 52, 60, 53, 61, 54, 61, 53, 61, 54, 62, 55, 62, 54, 62, 55, 63, 48, 63, 55, 63, 48, 56, 57, 64, 56, 64, 57, 65, 58, 65, 57, 65, 58, 66, 59, 66, 58, 66, 59, 67, 60, 67, 59, 67, 60, 68, 61, 68, 60, 68, 61, 69, 62, 69, 61, 69, 62, 70, 63, 70, 62, 70, 63, 71, 56, 71, 63, 71, 56, 64, 25, 24, 31, 25, 31, 30, 25, 30, 29, 25, 29, 28, 25, 28, 27, 25, 27, 26, 65, 71, 64, 65, 70, 71, 65, 69, 70, 65, 68, 69, 65, 67, 68, 65, 66, 67]);
const vl = scene.createVertexLayout(defaultVertexLayoutInfo);
const vb = new Float32Array(vertexs);
const ib = new Uint16Array(indices);
const geometry = scene.createGeometry(vl, vb, ib);
geometry.addSubMesh(ib.length, 0, 0);
xr.registerGeometry("man", scene => {
return geometry;
});
let ele = scene.createElement(xr.XRMesh, {
geometry: "man",
material: "standard-mat",
scale: "10 10 10",
position: "0 0 0"
});
let geometryRoot = scene.getElementById("node");
geometryRoot.addChild(ele);
另外希望能够提供：ExtrudeGeometry等基础类，不然不如three方便，但是three小程序兼容性比较差【即使改造后】。
glb那个可以私发我看下，我没太清楚具体问题。
registerGeometry的话，我估计是用法上的差异（应该可以，不过要注意顶点格式与顺序、饶序）。
可以参考下 模版 - 自定义Geometry