小编pri*_*ton的帖子

是否可以在同一对象上显示对象的线框以及其面的纯色？我找到了一种方法,使用对象的克隆并分配不同的材料,例如

var geometry = new THREE.PlaneGeometry(plane.width, plane.height,width - 1, height - 1);
var materialWireframe = new THREE.MeshPhongMaterial({color:"red",wireframe:true});
var materialSolid = new THREE.MeshPhongMaterial({color:"green",wireframe:false});
var plane = new THREE.Mesh(geometry, materialWireframe );
var plane1 = plane.clone();
plane1.material = materialSolid ;
plane1.material.needsUpdate = true;

有什么想法吗？

快问

如果我创建一个包含4个worker(我的应用程序的4个实例)的节点集群应用程序,我应该使用mySQL池还是mysql池集群？如果我使用池,它将为每个应用程序创建一个池但如果我使用池集群,它将为每个应用程序创建4个池(总共16个).这是一个很好的实现还是会降低性能？

让我们举一个假的例子来说明我在问什么.我正在创建一个这样的nodeJS服务器应用程序.

首先,让我们为mysql数据库创建配置文件(重要的是我创建db worker的这个文件的最后一部分):

DBconfig.js

'use strict'
const mysql   = require('mysql'),
      workers = process.env.WORKERS || require('os').cpus().length,
      cluster = require('cluster');

//Local Database Settings
const local_settings = {
    user       : 'user',
    host       : '127.0.0.1',
    password   : 'pass',
    database   : 'dbname',
    debug      : false,
    dateStrings: true,
    connectionLimit     : 10,
    defaultSelector     : 'RR',
    multipleStatements  : true,
    removeNodeErrorCount: 1
};

let poolCluster = module.exports = mysql.createPoolCluster( local_settings );

//here I make one db worker for each app worker
for(let i = 0; i < …

我如何绘制物体轴.我是在网格局部轴而不是世界轴上引用的.我知道使用:

function drawlines(){
            var material = new THREE.LineBasicMaterial({
                    color: 0x0000ff
                });

                var geometry = new THREE.Geometry();
                geometry.vertices.push(
                    new THREE.Vector3( 100, 0, 0 ),
                    new THREE.Vector3( 0, 0, 0 )
                );

                var line = new THREE.Line( geometry, material );
                scene.add( line );

                var material = new THREE.LineBasicMaterial({
                    color: 0x00ff00
                });

                var geometry = new THREE.Geometry();
                geometry.vertices.push(
                    new THREE.Vector3( 0, 100, 0 ),
                    new THREE.Vector3( 0, 0, 0 )
                );

                var line = new THREE.Line( geometry, material );
                scene.add( line );

                var …