C#开发BIMFACE系列26 服务端API之获取模型数据11：获取单个面积分区信息

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　　在《C#开发BIMFACE系列25 服务端API之获取模型数据9：获取楼层对应面积分区列表》一文中介绍了如何获取单个模型中单个楼层包含的面积分区列表。有了面积分区列表之后，即可查询单个面积分区的具体信息。

请求地址：GET https://api.bimface.com/data/v2/files/{fileId}/areas

说明：获取单个模型中单个面积分区包含的信息

参数：

请求 path(示例)：https://api.bimface.com/data/v2/files/1211223382064960/areas/313467

请求 header(示例)："Authorization: Bearer dc671840-bacc-4dc5-a134-97c1918d664b"

HTTP响应示例(200)：

{
  "code" : "success",
  "data" : {
    "area" : 5.168684733047761E7,
    "boundary" : "",
    "id" : "313137",
    "levelId" : "11",
    "maxPt" : {
      "x" : -4938.068482562385,
      "y" : -3201.59397858169,
      "z" : 0.0
    },
    "minPt" : {
      "x" : -4938.068482562385,
      "y" : -3201.59397858169,
      "z" : 0.0
    },
    "name" : "dining room 4",
    "perimeter" : 28802.013920728663,
    "properties" : [ {
      "group" : "dimension",
      "items" : [ {
        "code" : "perimeter",
        "extension" : "object",
        "key" : "perimeter",
        "orderNumber" : 0,
        "unit" : "mm",
        "value" : 17200,
        "valueType" : 2
      } ]
    } ],
    "viewName" : "1 1"
  },
  "message" : ""
}

封装成对应的C#类如下：

/// <summary>
///  获取单个面积分区信息返回的结果类
/// </summary>
[Serializable]
public class SingleModelSingleArea : GeneralResponse<Area>
{

}

其中 Area 类，请参考《C#开发BIMFACE系列25 服务端API之获取模型数据10：获取楼层对应面积分区列表》。

C#实现方法：

/// <summary>
///  获取单个模型中单个面积分区信息
/// </summary>
/// <param name="accessToken">【必填】令牌</param>
/// <param name="fileId">【必填】代表该单模型的文件ID</param>
/// <param name="areaId">【必填】面积分区ID</param>
/// <returns></returns>
public virtual SingleModelSingleArea GetSingleModelSingleArea(string accessToken, long fileId, string areaId)
{
    // GET https://api.bimface.com/data/v2/files/{fileId}/areas/{areaId}
    string url = string.Format(BimfaceConstants.API_HOST + "/data/v2/files/{0}/areas/{1}", fileId, areaId);

    BimFaceHttpHeaders headers = new BimFaceHttpHeaders();
    headers.AddOAuth2Header(accessToken);

    try
    {
        SingleModelSingleArea response;

        HttpManager httpManager = new HttpManager(headers);
        HttpResult httpResult = httpManager.Get(url);
        if (httpResult.Status == HttpResult.STATUS_SUCCESS)
        {
            response = httpResult.Text.DeserializeJsonToObject<SingleModelSingleArea>();
        }
        else
        {
            response = new SingleModelSingleArea
            {
                Message = httpResult.RefText
            };
        }

        return response;
    }
    catch (Exception ex)
    {
        throw new Exception("[获取单个面积分区信息]发生异常！", ex);
    }
}

其中调用到的 httpManager.Get() 方法，请参考《C# HTTP系列》

测试

在BIMFACE的控制台中可以看到我们上传的文件列表，模型状态均为转换成功。

使用“bimface_2018_mdv_room.rvt”为例测试上述方法。

在《C#开发BIMFACE系列25 服务端API之获取模型数据10：获取楼层对应面积分区列表》中返回了2个面积分区ID，分别是1092832与1092841。

1092841完整的面积分区信息如下：

success

[area=4333552.00744229, 
 boundary={"version":"2.0",
           "loops":[[[{"z":2999.9998798520546,"y":-3201.5938503598827,"x":4505.6454184675295},
                      {"z":2999.9998798520546,"y":-3201.5938503598904,"x":7001.9312370150637}
                     ],
                     [{"z":2999.9998798520546,"y":-3302.5938463149096,"x":7001.9312370150637},
                      {"z":2999.9998798520546,"y":-1465.5939198856749,"x":7001.9312370150674}
                     ],
                     [{"z":2999.9998798520546,"y":-1465.5939198856749,"x":7001.9312370150665},
                      {"z":2999.9998798520546,"y":-1465.5939198856668,"x":4505.6454184675331}
                     ],
                     [{"z":2999.9998798520546,"y":-1465.5939198856677,"x":4505.6454184675331},
                      {"z":2999.9998798520546,"y":-3302.5938463149018,"x":4505.64541846753}
                     ]
                    ]
                   ]
          },
 id=1092841, 
 levelId=, 
 maxPt=[x=7001.93123701507, y=-1465.59391988567, z=2999.99987985205], 
 minPt=[x=4505.64541846753, y=-3302.59384631491, z=2999.99987985205], 
 name=面积 3, 
 perimeter=8104.57151246125, 
 properties=[group=其他, 
             items=[code=, extension=, key=面积类型, orderNumber=,unit=,value=建筑公共面积,valueType=4]
            ]
            [group=尺寸标注, 
             items=[code=, extension=, key=周长, orderNumber=,unit=mm,value=8105,valueType=2]
                   [code=, extension=, key=计算高度, orderNumber=,unit=mm,value=0,valueType=2]
                   [code=, extension=, key=面积, orderNumber=,unit=m²,value=4,valueType=2]
            ]
            [group=标识数据, 
             items=[code=, extension=, key=名称, orderNumber=,unit=,value=面积,valueType=3]
                   [code=, extension=, key=图像, orderNumber=,unit=,value=,valueType=4]
                   [code=, extension=, key=注释, orderNumber=,unit=,value=,valueType=3]
                   [code=, extension=, key=编号, orderNumber=,unit=,value=3,valueType=3]
            ]
            [group=限制条件, 
             items=[code=, extension=, key=标高, orderNumber=,unit=,value=Level 2,valueType=4]
            ], 
 viewName=
]

测试代码如下：

// 获取单个面积分区信息
protected void btnGetSingleModelSingleArea_Click(object sender, EventArgs e)
{
    long fileId = txtFileID.Text.Trim().ToLong();
    string areaId = txtAreaId.Text.Trim();
    FileConvertApi api = new FileConvertApi();
    SingleModelSingleArea response = api.GetSingleModelSingleArea(txtAccessToken.Text, fileId, areaId);

    txtResult.Text = response.Code.ToString2()
                   + Environment.NewLine
                   + response.Message.ToString2()
                   + Environment.NewLine
                   + response.Data;
}

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