小编use*_*677的帖子

我正在尝试使用tree.js自定义几何生成一个正方形.但这段代码

var cubeGeo = new THREE.Geometry();
cubeGeo.vertices.push( new THREE.Vector3( -25,  25, -25 ) );
cubeGeo.vertices.push( new THREE.Vector3(  25,  25, -25 ) );
cubeGeo.vertices.push( new THREE.Vector3( -25, -25, -25 ) );
cubeGeo.vertices.push( new THREE.Vector3(  25,  -25, -25 ) );
cubeGeo.faces.push( new THREE.Face4( 0, 1, 2, 3, new THREE.Vector3( 0,  0,  1 ), 0xffffff, 0) );

    var cube = new THREE.Mesh(
  cubeGeo,  
  //new THREE.CubeGeometry(50, 50, 50),
  new THREE.MeshPhongMaterial({color: 0x696969, emissive: 0x696969, specular:0x696969, shininess: 15})
);

生成三角形可以有人解释为什么会发生吗？

我有个问题.我在three.js上写了一些代码,它由场景,2个对象,渲染器和相机组成.但当我添加光线时,我没有看到它!我尝试了一些选项..但没有任何帮助我我的代码 - http://codepen.io/usf/pen/LaDwh

var light = new THREE.SpotLight(0xff0000);
light.position.set( 0, 0, 50 );

var pointLight = new THREE.PointLight( 0xffffff);
pointLight.position.set( 0, 0, 50 );

scene.add(light);
scene.add(pointLight);

//code
renderer.render(scene, camera);

我不知道,是什么引起了这个问题:(

我有一些listview和SimpleAdapter

List<HashMap<String, Object>> dataList = new ArrayList<HashMap<String, Object>>();

    HashMap<String, Object> map = new HashMap<String, Object>();
    map.put(ITEMTITLE, getString(R.string.broadcast_street_1_text));
    map.put(ITEMDESCR, getString(R.string.broadcast_request_1_text));
    dataList.add(map);

    map = new HashMap<String, Object>();
    map.put(ITEMTITLE, getString(R.string.broascast_street_2_text)); 
    map.put(ITEMDESCR, getString(R.string.broadcast_request_2_text));
    dataList.add(map);

    SimpleAdapter adapter = new SimpleAdapter(this, 
                                               dataList,
                                               R.layout.broadcast_list_item,
                                               new String[] {ITEMTITLE, ITEMDESCR}, 
                                               new int[] {R.id.broadcast_list_item_title, R.id.broadcast_list_item_descr}); 

    list.setAdapter(adapter);

所以,当我点击一些列表项时,我需要更改活动.

        list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onItemClick(AdapterView<?> arg0, View arg1, int position,long arg3) {
            Intent intent = new Intent(getParent(), BroadcastDataActivity.class);
            intent.putExtra("street", arg0.getItemAtPosition(position).toString());
            intent.putExtra("time", arg0.getItemAtPosition(position).toString());
            parentActivity = (WorldTaxiActivityGroup) getParent();
            parentActivity.startChildActivity("BroadcastData", intent);
        }
    });

但是arg0.getItemAtPosition(position)只返回一个数据对象请帮帮我,我怎样才能正确获取数据？

有课，在画布上画了一些领域

  package com.cerbertek;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Region;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class PlayGameView extends SurfaceView implements SurfaceHolder.Callback {

    private CanvasThread canvasthread;
    private Context mContext;
    private Region firstRec;

    private class CanvasThread extends Thread  {
        private SurfaceHolder _holder;
        private boolean _run = false;

        public CanvasThread(SurfaceHolder surfaceHolder) {
            _holder = surfaceHolder;
        }

        public void setRunning(boolean run) {
            _run = run;
        }

        @Override
        public void run() {
            Canvas  c; …