${REST_ThemeRange_Title}
${REST_ThemeRange_Description}
internal static string ToJson(ThemeRange themeRange)
{
string json = "{";
List<string> list = new List<string>();
if (themeRange.Items != null && themeRange.Items.Count >= 1)
{
List<string> tempTUI = new List<string>();
foreach (var item in themeRange.Items)
{
tempTUI.Add(ThemeRangeItem.ToJson(item));
}
list.Add(string.Format("\"items\":[{0}]", String.Join(",", tempTUI.ToArray())));
}
else
{
list.Add("\"items\":[]");
}
list.Add(string.Format("\"rangeParameter\":\"{0}\"", themeRange.RangeParameter.ToString()));
list.Add(string.Format("\"rangeMode\":\"{0}\"", themeRange.RangeMode));
list.Add(string.Format("\"colorGradientType\":\"{0}\"", themeRange.ColorGradientType.ToString()));
if (!string.IsNullOrEmpty(themeRange.RangeExpression))
{
list.Add(string.Format("\"rangeExpression\":\"{0}\"", themeRange.RangeExpression));
}
else
{
list.Add("\"rangeExpression\":\"\"");
}
if (themeRange.MemoryData != null)
{
list.Add("\"memoryData\":" + themeRange.ToJson(themeRange.MemoryData));
}
else
{
list.Add("\"memoryData\":null");
}
list.Add("\"type\":\"RANGE\"");
json += string.Join(",", list.ToArray());
json += "}";
return json;
}
//点击生成专题图触发事件
private async void commit_Click(object sender, RoutedEventArgs e)
{
//设置专题图子项
List<ThemeRangeItem> themeRangeItems = new List<ThemeRangeItem>
{
new ThemeRangeItem
{
Start = 0.0,
End = 59973,
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=216,G=244,B=254},
LineWidth = 0.1,
}
},
new ThemeRangeItem
{
Start = 59973,
End = 1097234,
Visible = true ,
Style = new ServerStyle
{
FillForeColor = new Color {R=131,G=232,B=252},
LineWidth = 0.1 ,
}
},
new ThemeRangeItem
{
Start = 1097234,
End = 5245515,
Visible = true ,
Style = new ServerStyle
{
FillForeColor = new Color {R=112,G=212,B=243},
LineWidth = 0.1,
}
},
new ThemeRangeItem
{
Start = 5245515,
End = 17250390,
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=23,G=198,B=238},
LineWidth = 0.1,
}
},
new ThemeRangeItem
{
Start = 17250390,
End = 894608700,
Visible = true,
Style = new ServerStyle
{
FillForeColor = new Color {R=0,G=187,B=236},
LineWidth = 0.1 ,
}
},
new ThemeRangeItem
{
Start = 894608700,
End = 12E+8,
Visible = true ,
Style = new ServerStyle
{
FillForeColor = new Color {R=0,G=133,B=236},
LineWidth = 0.1 ,
}
}
};
//设置范围分段专题图字段、分段模式、分段参数和子项数组
ThemeRange themeRange = new ThemeRange
{
RangeExpression = "Pop_1994",
RangeMode = RangeMode.EQUALINTERVAL,
RangeParameter = 6,
Items = themeRangeItems
};
//设置专题图参数
ThemeParameters themeRangeParams = new ThemeParameters
{
//数据集名称
DatasetName = "Countries",
//数据源名称
DataSourceName = "World",
Themes = new List<Theme> { themeRange }
};
//与服务器交互
try
{
ThemeService themeRangeServie = new ThemeService(url);
var result = await themeRangeServie.ProcessAsync(themeRangeParams);
//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 ThemeRange FromJson(JsonObject json)
{
if (json == null) return null;
ThemeRange themeRange = new ThemeRange();
if (json["items"].ValueType != JsonValueType.Null && json["items"].GetObjectEx().Count > 0)
{
List<ThemeRangeItem> itemsList = new List<ThemeRangeItem>();
foreach (JsonObject item in json["items"].GetArray())
{
itemsList.Add(ThemeRangeItem.FromJson(item));
}
themeRange.Items = itemsList;
}
if (json["colorGradientType"].ValueType != JsonValueType.Null)
{
themeRange.ColorGradientType = (ColorGradientType)Enum.Parse(typeof(ColorGradientType), json["colorGradientType"].GetStringEx(), true);
}
else
{
//这里不处理为空时的情况
}
themeRange.RangeExpression = json["rangeExpression"].GetStringEx();
if (json["rangeMode"].ValueType!= JsonValueType.Null)
{
themeRange.RangeMode = (RangeMode)Enum.Parse(typeof(RangeMode), json["rangeMode"].GetStringEx(), true);
}
else
{
//不处理Null的情况
}
themeRange.RangeParameter = json["rangeParameter"].GetNumberEx();
return themeRange;
}
