本文整理汇总了C#中Feature.Area方法的典型用法代码示例。如果您正苦于以下问题：C# Feature.Area方法的具体用法？C# Feature.Area怎么用？C# Feature.Area使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Feature的用法示例。
在下文中一共展示了Feature.Area方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: SectionPolygonWithLine
/// <summary>
/// Sections a polygon into multiple parts depending on where line crosses it and if previous sectioning has occured.
/// </summary>
/// <param name="line">The line that splits the polygon. First and last points are intersect points.</param>
/// <param name="polygon">The polygon that is to be split by the line.</param>
/// <param name="polyStart">Index to polygon segment where the first intersect point is found.</param>
/// <param name="polyEnd">Index to polygon segment where last intersect point is found.</param>
/// <param name="resultFeatureSet">Reference to result shapefile where new polygon sections will be saved.</param>
/// <returns>False if an error occurs, true otherwise.</returns>
private static bool SectionPolygonWithLine(
ref IFeature line, ref IFeature polygon, int polyStart, int polyEnd, ref IFeatureSet resultFeatureSet)
{
int numResults = resultFeatureSet.Features.Count;
bool previousSplits = false;
if (numResults != 0)
{
previousSplits = true;
}
// we can now make two new polygons by splitting the original one with the line segment
IFeature poly1 = new Feature();
IFeature poly2 = new Feature();
SplitPolyInTwo(ref line, ref polygon, polyStart, polyEnd, ref poly1, ref poly2);
if (previousSplits == false)
{
// if this split creates a sliver, we do not want to add either poly
if (poly1.Area() > FindIntersectionTolerance && poly2.Area() > FindIntersectionTolerance)
{
int shpIndex = 0;
resultFeatureSet.Features.Insert(shpIndex, poly1);
shpIndex = 1;
resultFeatureSet.Features.Insert(shpIndex, poly2);
}
}
else
{
// this polygon underwent previous splittings, check
// if the new results overlay the old ones before adding to resultSF
IFeatureSet testFeatureSet = new FeatureSet(FeatureType.Polygon);
IFeatureSet testFeatureSet2 = new FeatureSet(FeatureType.Polygon);
if (ClipPolygonFeatureSetWithPolygon(resultFeatureSet, poly1, testFeatureSet, false) == false)
{
return false;
}
if (ClipPolygonFeatureSetWithPolygon(resultFeatureSet, poly2, testFeatureSet2, false) == false)
{
return false;
}
if (testFeatureSet.Features.Count > 0 || testFeatureSet2.Features.Count > 0)
{
int numTestShapes = testFeatureSet.Features.Count;
const int insertIndex = 0;
IFeature insertShape;
for (int j = 0; j <= numTestShapes - 1; j++)
{
insertShape = testFeatureSet.Features[j];
resultFeatureSet.Features.Insert(insertIndex, insertShape);
}
numTestShapes = testFeatureSet2.Features.Count;
for (int j = 0; j <= numTestShapes - 1; j++)
{
insertShape = testFeatureSet2.Features[j];
resultFeatureSet.Features.Insert(insertIndex, insertShape);
}
}
}
// end of checking against previous splits
return true;
}示例2: addPolyFromPointsList
private void addPolyFromPointsList(IFeatureSet polyOut, List<Point> lstPoints, double currVal, ICancelProgressHandler cancelProgressHandler)
{
List<ICoordinate> coordinates = new List<ICoordinate>();
double area;
//check if (lstPoints.Count > 1)
if (lstPoints.Count > 2)
{
foreach (Point tmpPoint in lstPoints)
{
coordinates.Add(tmpPoint.Coordinate);
}
try
{
IFeature tmpPoly = new Feature(FeatureTypes.Polygon, coordinates);
polyOut.Features.Add(tmpPoly);
area = tmpPoly.Area();
}
catch (Exception ex)
{
throw new SystemException("Could not add new polygon to featureset in addPolyFromPointsList", ex);
}
polyOut.DataTable.Rows[polyOut.Features.Count - 1][2] = area;
if (currVal == 1)
{
polyOut.DataTable.Rows[polyOut.Features.Count - 1][0] = 1;
polyOut.DataTable.Rows[polyOut.Features.Count - 1][1] = "Initiation";
}
if (currVal == 3)
{
polyOut.DataTable.Rows[polyOut.Features.Count - 1][0] = 3;
polyOut.DataTable.Rows[polyOut.Features.Count - 1][1] = "In-flow";
}
if (currVal > 3)
{
polyOut.DataTable.Rows[polyOut.Features.Count - 1][0] = 2;
polyOut.DataTable.Rows[polyOut.Features.Count - 1][1] = "Out-flow";
polyOut.DataTable.Rows[polyOut.Features.Count - 1][3] = Convert.ToString(currVal);
}
}
}