/// <summary>
/// 判断两个包络是否系统兼容一致
/// 主要用于地图缩放到指定的包络时不要频繁刷新
/// </summary>
/// <param name="envelope1">ESRI包络几何形状接口1</param>
/// <param name="envelope2">ESRI包络几何形状接口2</param>
/// <returns>是否</returns>
public static bool IsCompatibleEnvlope(IEnvelope envelope1, IEnvelope envelope2)
{
bool isCompatible = false;
if (IsHighLevelGeometry(envelope1) && IsHighLevelGeometry(envelope2))
{
isCompatible = (envelope1 as IRelationalOperator).Disjoint(envelope2);
if (!isCompatible)
{
if ((envelope1 as IArea).Area >= (envelope2 as IArea).Area)
{
isCompatible = (envelope1 as IRelationalOperator).Contains(envelope2);
}
else
{
isCompatible = (envelope2 as IRelationalOperator).Contains(envelope1);
}
if (isCompatible)
{
object lpEnvelope1 = new EnvelopeClass();
SystemUtility.ObjectCopy(envelope1, ref lpEnvelope1);
object lpEnvelope2 = new EnvelopeClass();
SystemUtility.ObjectCopy(envelope2, ref lpEnvelope2);
if ((envelope1 as IArea).Area >= (envelope2 as IArea).Area)
{
(lpEnvelope2 as IEnvelope).Expand(1.001, 1.001, true);
isCompatible = (lpEnvelope1 as IRelationalOperator).Contains((IEnvelope)lpEnvelope2);
return(!isCompatible);
}
else
{
(lpEnvelope1 as IEnvelope).Expand(1.001, 1.001, true);
isCompatible = (lpEnvelope2 as IRelationalOperator).Contains((IEnvelope)lpEnvelope1);
return(!isCompatible);
}
}
}
}
return(isCompatible);
}
/// <summary>
/// 获取几何形状的边线，对于面几何形状就是外型边线
/// </summary>
/// <param name="geometry">查询的几何形状</param>
/// <returns>几何形状的边线</returns>
public static IPolycurve GeometryLineShape(IGeometry geometry)
{
if (IsValidGeometry(geometry) && geometry is IPolycurve)
{
try
{
IPolycurve lineShape = new PolylineClass();
object shapeLineObj = (object)lineShape;
SystemUtility.ObjectCopy(geometry, ref shapeLineObj);
lineShape = (IPolycurve)shapeLineObj;
return(lineShape);
}
catch
{
return(null);
}
}
else
{
return(null);
}
}