${REST_ThemeUnique_Title}
${REST_ThemeUnique_Description}
private static string GetThemeInfoJson(ThemeUnique themeUnique)
{
if (themeUnique == null)
{
return null;
}
string themeInfoJson = "{";
List<string> themeInfoJsonList = new List<string>();
if (themeUnique.Items != null && themeUnique.Items.Count > 0)
{
themeInfoJsonList.Add(string.Format("\"items\":[{0}]", GetThemeItemsJson(themeUnique.Items)));
}
else
{
themeInfoJsonList.Add("\"items\":[]");
}
if (!string.IsNullOrEmpty(themeUnique.UniqueExpression))
{
themeInfoJsonList.Add(string.Format("\"uniqueExpression\":\"{0}\"", themeUnique.UniqueExpression));
}
else
{
themeInfoJsonList.Add("\"uniqueExpression\":\"\"");
}
themeInfoJsonList.Add(string.Format("\"colorGradientType\":\"{0}\"", themeUnique.ColorGradientType.ToString()));
if (themeUnique.DefaultStyle != null)
{
themeInfoJsonList.Add(string.Format("\"defaultStyle\":{0}", ServerStyle.ToJson(themeUnique.DefaultStyle)));
}
else
{
themeInfoJsonList.Add(string.Format("\"defaultStyle\":{0}", ServerStyle.ToJson(new ServerStyle())));
}
//添加专题图请求体必须的但不开放给用户的字段
themeInfoJsonList.Add("\"type\":\"UNIQUE\"");
if (themeUnique.MemoryData != null)
{
themeInfoJsonList.Add("\"memoryData\":" + themeUnique.ToJson(themeUnique.MemoryData));
}
else
{
themeInfoJsonList.Add("\"memoryData\":null");
}
themeInfoJson += string.Join(",", themeInfoJsonList.ToArray());
themeInfoJson += "}";
return themeInfoJson;
}
internal static string ToJson(ThemeUnique themeUnique)
{
string json = GetThemeInfoJson(themeUnique);
return json;
}
private async void commit_Click(object sender, RoutedEventArgs e)
{
//专题图子项数组
List<ThemeUniqueItem> items = new List<ThemeUniqueItem>
{
//专题图子项
new ThemeUniqueItem
{
//SmID字段值
Unique="1",
Style=new ServerStyle
{
FillForeColor = new Color {R=1,G=128,B=171},
LineWidth = 0.1
},
Visible=true,
},
new ThemeUniqueItem
{
//SmID字段值
Unique="247",
Style=new ServerStyle
{
FillForeColor= new Color {R=192,G=214,B=54},
LineWidth = 0.1
},
Visible=true,
}
};
//设置其他 SmID 字段显示风格
ThemeUnique themeUnique = new ThemeUnique
{
Items = items,
UniqueExpression = "SmID",
DefaultStyle = new ServerStyle
{
FillOpaqueRate = 100,
FillForeColor = new Color { R = 250, G = 237, B = 195 },
LineWidth = 0.1,
FillBackOpaque = true,
FillBackColor = Colors.Transparent
}
};
ThemeDotDensity themeDotDensity = new ThemeDotDensity
{
//专题图中每一个点所代表的数值
Value = 10000000,
//1994年人口字段
DotExpression = "Pop_1994",
Style = new ServerStyle
{
//设置点符号
MarkerSize = 2,
MarkerSymbolID = 1,
FillForeColor = Color.FromArgb(255, 0, 180, 150),
}
};
//专题图参数设置
ThemeParameters compostionThemeParameters = new ThemeParameters
{
DatasetName = "Countries",
DataSourceName = "World",
Themes = new List<Theme> { themeDotDensity, themeUnique }
};
// //与服务器交互成功
try
{
ThemeService compositeService = new ThemeService(url);
var result = await compositeService.ProcessAsync(compostionThemeParameters);
//显示专题图。专题图在服务端为一个资源，每个资源都有一个 ID 号和一个 url
//要显示专题图即将资源结果的 ID 号赋值给图层的 layersID 属性即可
themeLayer.LayersID = result.ResourceInfo.NewResourceID;
if (!this.MyMap.Layers.Contains(themeLayer))
{
//加载专题图图层
this.MyMap.Layers.Add(themeLayer);
}
if (!themeLayer.IsVisible)
{
themeLayer.IsVisible = true;
}
}
//与服务器交互失败
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
internal static ThemeUnique FromJson(JsonObject json)
{
if (json == null) { return null; }
ThemeUnique themeUnique = new ThemeUnique();
if (json["defaultStyle"].ValueType != JsonValueType.Null)
{
themeUnique.DefaultStyle = ServerStyle.FromJson(json["defaultStyle"].GetObjectEx());
}
if (json["colorGradientType"].ValueType!= JsonValueType.Null)
{
themeUnique.ColorGradientType = (ColorGradientType)Enum.Parse(typeof(ColorGradientType), json["colorGradientType"].GetStringEx(), true);
}
else
{
//这里不处理为空时的情况
}
List<ThemeUniqueItem> items = new List<ThemeUniqueItem>();
if (json["items"].ValueType != JsonValueType.Null && json["items"].GetArray().Count > 0)
{
for (int i = 0; i < json["items"].GetArray().Count; i++)
{
items.Add(ThemeUniqueItem.FromJson((JsonValue)json["items"].GetArray()[i]));
}
}
themeUnique.Items = items;
themeUnique.UniqueExpression = json["uniqueExpression"].GetStringEx();
return themeUnique;
}
//点击生成专题图触发事件
private async void commit_Click(object sender, RoutedEventArgs e)
{
//专题图子项数组
List<ThemeUniqueItem> items = new List<ThemeUniqueItem>
{
//专题图子项
new ThemeUniqueItem
{
Unique = "城市",
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=157,G=127,B=255},
LineWidth = 0.05
}
},
new ThemeUniqueItem
{
Unique = "旱地",
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=250,G=237,B=195},
LineWidth = 0.05
}
},
new ThemeUniqueItem
{
Unique="水浇地",
Visible=true,
Style=new ServerStyle
{
FillForeColor = new Color {R=59,G=188,B=230},
LineWidth = 0.05
}
},
new ThemeUniqueItem
{
Unique = "湖泊水库",
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=1,G=128,B=171},
LineWidth = 0.05
}
},
new ThemeUniqueItem
{
Unique = "水田",
Visible = true ,
Style = new ServerStyle
{
FillForeColor = new Color {R=167,G=219,B=232},
LineWidth = 0.05
}
},
new ThemeUniqueItem
{
Unique = "草地",
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=192,G=214,B=54},
LineWidth = 0.05
}
},
};
//设置其他土地利用类型显示风格
ThemeUnique themeUnique = new ThemeUnique
{
Items = items,
UniqueExpression = "LandType",
DefaultStyle = new ServerStyle
{
FillOpaqueRate = 100,
FillForeColor = new Color
{
R = 80,
G = 130,
B = 255
},
FillBackOpaque = true,
LineWidth = 0.05,
}
};
//专题图参数对象
ThemeParameters themeUniqueParameters = new ThemeParameters
{
Themes = new List<Theme> { themeUnique },
//数据集名称
DatasetName = "Landuse_R",
//数据源名称
DataSourceName = "Jingjin"
};
//与服务器交互
try
{
ThemeService themeUniqueService = new ThemeService(url);
var result = await themeUniqueService.ProcessAsync(themeUniqueParameters);
//显示专题图。专题图在服务端为一个资源，每个资源都有一个 ID 号和一个 url
//要显示专题图即将资源结果的 ID 号赋值给图层的 layersID 属性即可
themeLayer.LayersID = result.ResourceInfo.NewResourceID;
if (!this.MyMap.Layers.Contains(themeLayer))
{
//加载专题图图层
this.MyMap.Layers.Add(themeLayer);
}
if (!themeLayer.IsVisible)
{
themeLayer.IsVisible = true;
}
}
//交互失败
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
