PanoramaGL向你展示360°全景影像
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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。
