[置顶] 实现360度全景图像的利器--PanoramaGL

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mob604756f09529 2013-07-29 19:53:00

文章标签 json 加载 android jar ide 文章分类 运维

介绍

1如何导入PanoramaGL类库？

1.1从源代码中导入

(1)下载PanoramaGL_0.1.zip或从代码仓库下载源代码

(2)如果你下载zip文件然后解压该文件

(3)在Eclipse中导入PanoramaGL项目：

点击“File”选择“Import”菜单；

选择“General”目录中的“Existing Projects into Workspace”，点击“Next”按钮；

点击“Browse”按钮，选择PanoramaGL项目文件夹

点击“Finish”按钮。

(4)右键单击你的项目并选择“Properties”选项

(5)选择左侧面板“Android”选项

(6)找到右侧面板“Library”部分，点击“Add...”按钮

(7)选择“PanoramaGL”类库，点击“OK”按钮

(8)在属性窗口的右下角选择“OK”按钮表示接受更改

1.2从编译后的文件中导入

(1)下载libglues.zip

(2)解压zip文件并复制到你的项目的“libs”文件夹中

(3)下载PanoramaGL 0.1.jar

(4)复制jar文件到你的项目的“libs”文件夹中

(5)在你的项目中导入jar文件:

右键单击你的项目并选择“Properties”选项；

选择左侧面板“Java Build Path”选项；

选择“Libraries”选项卡；

点击“Add JARs”按钮；

在你的项目中选择“libs/PanoramaGL_0.1.jar”文件；

点击“OK”按钮；

在属性窗口的右下角选择“OK”按钮表示接受更改。

2在应用程序中如何使用PanoramaGL？

(1)如前面描述那样导入类库

(2)在“res/raw”文件夹中导入一个球面图像（如：pano_sphere.jpg）

(3)在Activity中，你需要构建一个全景图像的查看器，具体做法如下：

继承PLView类

public class YourActivity extends PLView

在onCreate()方法中加载全景图像

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    PLSphericalPanorama panorama = new PLSphericalPanorama();
    panorama.setImage(this.getCurrentGL(), PLImage.imageWithBitmap(PLUtils.getBitmap(this, R.raw.pano_sphere)));
    this.setPanorama(panorama);
}

注意：如果有必要的话，你也可以从其他方法中加载全景图像或事件。

3简单JSON协议

同样，你可以使用JSON协议加载全景图像。

注意：在该版本中，JSON协议被限制只处理本地文件。

3.1源代码

this.load(new PLJSONLoader(this, "res://raw/json_spherical"));

注意：在我的应用程序的“res/raw”文件夹中有一个名为“json_spherical.data”的文件，可以使用这段代码加载。或

this.load(new PLJSONLoader(this, "file:///sdcard/files/json_spherical.data"));

注意：在Android设备的“/sdcard/files”文件夹中有一个名为“json_spherical.data”的文件，可以使用这段代码加载。

3.2JSON协议

{
    "urlBase": "file:///sdcard/files",  //URL base where the files are
                                        //The options are res:// for application resources and file:// for file system (this feature will be improved to support the http protocol)
    "type": "spherical",                //Panorama type: [spherical, spherical2, cubic, cylindrical]
    "sensorialRotation": false,         //Automatic rotation using sensors [true, false] <Optional>
    "scrolling":                        //Scrolling section <Optional>
    {
        "enabled": false                //Enable scrolling feature [true, false] <Optional>
    },
    "inertia":                          //Inertia section <Optional>
    {
        "enabled": false,               //Enable inertia feature [true, false] <Optional>
        "interval": 3                   //Inertia's interval in seconds <Optional>
    },
    "accelerometer":                    //Accelerometer section <Optional>
    {
        "enabled": false,               //Enable the accelerometer feature [true, false] <Optional>
        "interval": 0.033,              //Update interval of accelerometer (this value must be calculated as 1/frequency) <Optional>
        "sensitivity": 10.0,            //Sensitivity of the accelerometer <Optional>
        "leftRightEnabled": true,       //Enable the direction of movement with the accelerometer (left/right) <Optional>
        "upDownEnabled": false          //Enable the direction of movement with the accelerometer (up/down) <Optional>
    },
    "images":                           //Panoramic images section
                                        //A property can be a name e.g. preview.jpg, preview or URL e.g. file:///sdcard/files/preview.jpg, res://raw/preview
                                        //if a property only have a name, the real path will be the urlBase + image name
    {
        "preview": "preview.jpg",       //Preview image name or URL (this option will be used with http protocol) <Optional>
        "image": "pano.jpg"             //Panoramic image name or URL for spherical, spherical2 and cylindrical panoramas
        "front": "front.jpg",           //Front image name or URL for cubic panorama (only use with cubic panorama)
        "back": "back.jpg",             //Back image name or URL for cubic panorama (only use with cubic panorama)
        "left": "left.jpg",             //Left image name or URL for cubic panorama (only use with cubic panorama)
        "right": "right.jpg",           //Right image name or URL for cubic panorama (only use with cubic panorama)
        "up": "up.jpg",                 //Up image name or URL for cubic panorama (only use with cubic panorama)
        "down": "down.jpg"              //Down image name or URL for cubic panorama (only use with cubic panorama)
    },
    "camera":                           //Camera settings section <Optional>
    {
        "vlookat": 0,                   //Initial vertical position [-90, 90]
        "hlookat": 0,                   //Initial horizontal position [-180, 180]
        "atvmin": -90,                  //Min vertical position [-90, 90]
        "atvmax": 90,                   //Max vertical position [-90, 90]
        "athmin": -180,                 //Min horizontal position [-180, 180]
        "athmax": 180                   //Max horizontal position [-180, 180]
    },
    "hotspots": [                       //Hotspots section (this section is an array of hotspots) <Optional>
                 {
                 "id": 1,               //Hotspot identifier (long)
                 "atv": 0,              //Vertical position [-90, 90]
                 "ath": 0,              //Horizontal position [-180, 180]
                 "width": 0.08,         //Width
                 "height": 0.08,        //Height
                 "image": "hotspot.png" //Image name or URL
                 }
                ]
}