使用HTML5 WebGL 360度全景查看器将动态图像与Codeigniter中的Three.js集成
如果您只是复制并粘贴其文档中提供的代码并将360图像放在索引文件旁边并将其打开，则找到的Panorama 360查看器HERE和HERE很容易使用浏览器。但有没有办法动态地从数据库中提取图像并在视图中渲染360图像（link）
全景查看器文件中给出的代码可以像这样获取全景数组中的图像
var panoramasArray = ["01.jpg","02.jpg","03.jpg","04.jpg","05.jpg","06.jpg"];
var panoramaNumber = Math.floor(Math.random()*panoramasArray.length);
如果我们只需显示一张图片怎么办？有没有人试图从数据库中动态引入图像并使用360查看器呈现视图？我看到了一个未答复的帖子here，但没有人回答这个问题。
1 个答案:
答案 0 :(得分：2)
对于许多Codeigniter开发人员和那些一直在开发房地产网站的人来说，要么想要尝试但未能将360图像查看器集成到他们的网站中。这是迄今为止我所做和所学的练习。
如何运作？
- 上传360图片
- 从数据库中获取360图像
- 显示/渲染视图
- 控制器中用于上传360张图像的功能
- 模型中用于保存和获取360图像列表的功能
- 调用视图以显示图像的功能。
- 显示360图像的标记页面，其中包含所有JavaScript。
我们需要什么？
这是我上传360图像的视图，这只是一个带有文件输入字段的表单。
public function upload_360_images()
{
if($this->session->userdata['id'] && $this->session->userdata['type']=='user')
{
if($_FILES)
{
if(isset($_FILES['files'])){
$data['errors']= array();
$extensions = array("jpeg","jpg","png");
foreach($_FILES['files']['tmp_name'] as $key => $tmp_name ){
$file_name = $key.$_FILES['files']['name'][$key];
$file_size =$_FILES['files']['size'][$key];
$file_tmp =$_FILES['files']['tmp_name'][$key];
$file_type=$_FILES['files']['type'][$key];
/*$file_ext=explode('.',$_FILES['image']['name'][$key]) ;
$file_ext=end($file_ext);*/
$i=1;
if($file_size > 7097152){
$data['errors'][$i]='File '.$i.' size must be less than 7 MB';
$i++;
}
$desired_dir="uploads";
if(empty($data['errors'])==true){
if(is_dir($desired_dir)==false){
mkdir("$desired_dir", 0700); // Create directory if it does not exist
}
if(is_dir("$desired_dir/".$file_name)==false){
move_uploaded_file($file_tmp,"uploads/".$file_name);
$this->post_model->add360Image('property_360_images',$file_name,$this->uri->segment(3));
}else{ //rename the file if another one exist
$new_dir="uploads/".$file_name.time();
rename($file_tmp,$new_dir) ;
}
}else{
$data['contact']=$this->admin_model->getContactDetails();
$data['images']=$this->post_model->getProperty360Images($this->uri->segment(3));
$data['title']='My Profile Image';
$this->load->view('site/static/head',$data);
$this->load->view('site/static/header');
$this->load->view('site/content/upload_360_images');
$this->load->view('site/static/footer');
$this->load->view('site/static/footer_links');
}
}
if(empty($data['errors']))
{
redirect(base_url().'dashboard');
}
else
{
$data['contact']=$this->admin_model->getContactDetails();
$data['images']=$this->post_model->getProperty360Images($this->uri->segment(3));
$data['title']='My Profile Image';
$this->load->view('site/static/head',$data);
$this->load->view('site/static/header');
$this->load->view('site/content/upload_360_images');
$this->load->view('site/static/footer');
$this->load->view('site/static/footer_links');
}
}
}
else
{
$data['contact']=$this->admin_model->getContactDetails();
$data['images']=$this->post_model->getProperty360Images($this->uri->segment(3));
$data['title']='My Profile Image';
$this->load->view('site/static/head',$data);
$this->load->view('site/static/header');
$this->load->view('site/content/upload_360_images');
$this->load->view('site/static/footer');
$this->load->view('site/static/footer_links');
}
}
else
{
redirect(base_url().'user/login');
}
}
上面是我的Controller功能，它上传360 Image并将名称保存在数据库中。没什么好看的，我没有使用CI上传库
这是我的数据库表，用于存储360图像名称
public function property_detail()
{
$id=$this->uri->segment(3);
$this->property_model->incPageViewById($id);
$data['contact']=$this->admin_model->getContactDetails();
$data['section_fields']=$this->admin_model->getSectionFields('property_sections');
$data['property']=$this->property_model->getPropertyById($id);
// Get 360 Images list of this property based on ID
$data['images360']=$this->post_model->getProperty360Images($id);
$data['profile']=$this->property_model->getFieldsById($id);
$data['types']=$this->admin_model->getAll('property_types');
$data['similar']=$this->property_model->getSimilarPropertiesById($data['property'][0]['posted_by']);
$data['popular']=$this->property_model->getAllProperties(0,0);
if($this->isLoggedIn())
{
$data['favorites']=$this->property_model->getMyFavorites($this->session->userdata['id']);
$data['is_favorite']=$this->property_model->isFavorite($id,$this->session->userdata['id']);
}
$data['posted_by']=$this->property_model->getPostedByDetails($id);
$data['comments']=$this->property_model->getCommentsById($id);
if($_POST)
{
$config=array(
array(
'field' => 'name',
'label' => 'Name',
'rules' => 'trim|required',
),
array(
'field' => 'email',
'label' => 'Email',
'rules' => 'trim|required',
),
array(
'field' => 'comment',
'label' => 'Comment',
'rules' => 'trim|required',
)
);
$this->form_validation->set_rules($config);
if($this->form_validation->run()==false)
{
$data['errors']=validation_errors();
$data['title']=$data['property'][0]['title'];
$this->load->view('site/static/head',$data);
$this->load->view('site/static/header');
$this->load->view('site/content/property_detail');
$this->load->view('site/static/footer');
$this->load->view('site/static/footer_links');
}
else
{
$this->property_model->addComment($_POST,$id);
$data['success']='Comment posted successfully';
$data['comments']=$this->property_model->getCommentsById($id);
$data['title']=$data['property'][0]['title'];
$this->load->view('site/static/head',$data);
$this->load->view('site/static/header');
$this->load->view('site/content/property_detail');
$this->load->view('site/static/footer');
$this->load->view('site/static/footer_links');
}
}
else
{
$data['title']=$data['property'][0]['title'];
$this->load->view('site/static/head',$data);
$this->load->view('site/static/header');
$this->load->view('site/content/property_detail');
$this->load->view('site/static/footer');
$this->load->view('site/static/footer_links');
}
}
上面是Controller Function，它从Models中获取所有数据并调用视图来呈现页面。您可以在控制器功能中看到以下行
// Get 360 Images list of this property based on ID
$data['images360']=$this->post_model->getProperty360Images($id);
从模型中获取360张图片的列表。现在在属性详细信息视图中，我再次调用实际在＆lt;中显示360图像的视图。 iframe＆gt;并将图像名称发送到显示360图像的URL。
<?php if(count($images360)>0){
?><h3>360 View</h3><?php
for($i=0;$i<count($images360);$i++){?>
<iframe src = "https://duperty.com/realestate/load360/showImage/<?php echo $images360[$i]['image']?>" width = "100%" height = "540" frameborder = "0" scrolling = "no"></iframe>
<?php }
}?>
我有另一个带有showImage函数的控制器load360，它接收Image name作为参数并调用显示360图像的视图
class Load360 extends CI_Controller {
function __construct()
{
parent::__construct();
}
public function showImage()
{
header("cache-Control: no-store, no-cache, must-revalidate");
header("cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
$data['image']=$this->uri->segment(3);
//echo $data['image'];exit;
$this->load->view('site/content/show360',$data);
}
}
在我在这里调用的show360视图中，我只是回显图像变量和图像路径。
<html>
<head>
<style>
body{
margin: 0;
}
canvas {
height: 100%;
width: 100%;
}
</style>
<script src="//cdnjs.cloudflare.com/ajax/libs/three.js/r69/three.min.js"></script>
</head>
<body>
<script>
var manualControl = false;
var longitude = 0;
var latitude = 0;
var savedX;
var savedY;
var savedLongitude;
var savedLatitude;
// panoramas background
var panoramasArray = ["<?php echo base_url().'uploads/'.$image;?>"];
var panoramaNumber = Math.floor(Math.random()*panoramasArray.length);
// setting up the renderer
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
// creating a new scene
var scene = new THREE.Scene();
// adding a camera
//var camera = new THREE.PerspectiveCamera(35, window.innerWidth / window.innerHeight, 0.5, 500);
var camera = new THREE.PerspectiveCamera(75, window.innerWidth / window.innerHeight, 1, 1000);
camera.target = new THREE.Vector3(0, 0, 0);
// creation of a big sphere geometry
var sphere = new THREE.SphereGeometry(100, 100, 40);
sphere.applyMatrix(new THREE.Matrix4().makeScale(-1, 1, 1));
// creation of the sphere material
var sphereMaterial = new THREE.MeshBasicMaterial();
sphereMaterial.map = THREE.ImageUtils.loadTexture(panoramasArray[panoramaNumber])
// geometry + material = mesh (actual object)
var sphereMesh = new THREE.Mesh(sphere, sphereMaterial);
scene.add(sphereMesh);
// listeners
document.addEventListener("mousedown", onDocumentMouseDown, false);
document.addEventListener("mousemove", onDocumentMouseMove, false);
document.addEventListener("mouseup", onDocumentMouseUp, false);
render();
function render(){
requestAnimationFrame(render);
if(!manualControl){
longitude += 0.1;
}
// limiting latitude from -85 to 85 (cannot point to the sky or under your feet)
latitude = Math.max(-85, Math.min(85, latitude));
// moving the camera according to current latitude (vertical movement) and longitude (horizontal movement)
camera.target.x = 500 * Math.sin(THREE.Math.degToRad(90 - latitude)) * Math.cos(THREE.Math.degToRad(longitude));
camera.target.y = 500 * Math.cos(THREE.Math.degToRad(90 - latitude));
camera.target.z = 500 * Math.sin(THREE.Math.degToRad(90 - latitude)) * Math.sin(THREE.Math.degToRad(longitude));
camera.lookAt(camera.target);
// calling again render function
renderer.render(scene, camera);
}
// when the mouse is pressed, we switch to manual control and save current coordinates
function onDocumentMouseDown(event){
event.preventDefault();
manualControl = true;
savedX = event.clientX;
savedY = event.clientY;
savedLongitude = longitude;
savedLatitude = latitude;
}
// when the mouse moves, if in manual contro we adjust coordinates
function onDocumentMouseMove(event){
if(manualControl){
longitude = (savedX - event.clientX) * 0.1 + savedLongitude;
latitude = (event.clientY - savedY) * 0.1 + savedLatitude;
}
}
// when the mouse is released, we turn manual control off
function onDocumentMouseUp(event){
manualControl = false;
}
// pressing a key (actually releasing it) changes the texture map
document.onkeyup = function(event){
panoramaNumber = (panoramaNumber + 1) % panoramasArray.length
sphereMaterial.map = THREE.ImageUtils.loadTexture(panoramasArray[panoramaNumber])
}
</script>
</body>
</html>
和乔布斯完成。您可以在以下链接中查看视图的呈现方式
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