360°全景影像移动端类库--PanoramaGL

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介绍

        本指南将介绍一个PanoramaGL 0.1类库的简单用法,更多的细节请签出HelloPanoramaGL示例查看。

细节

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
                 }
                ]
}

3.3看到

PLJSONLoader类和PLView加载方法。
json_spherical.data、json_spherical2、json_cylindrical.data和json_cubic.data都位于HelloPanoramaGL示例的“res/raw”文件夹中。

4更多信息

想获得更多信息,请签出HelloPanoramaGL示例,该示例运行在Android2.x或以上版本。

5效果图

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