public void MeasureBufferConstructionConstructBuffersPerformance()
{
const int iterations = 100;
IEnumerable <IGeometry> sources = GetBufferInput(iterations);
IBufferConstruction bufferConstruction = GetBufferConstruction();
IGeometryBag outputBag = new GeometryBagClass();
var watch = new Stopwatch();
watch.Start();
bufferConstruction.ConstructBuffers(
new GeometryEnumerator <IGeometry>(sources),
10, (IGeometryCollection)outputBag);
watch.Stop();
Assert.AreEqual(iterations, ((IGeometryCollection)outputBag).GeometryCount);
Console.Out.WriteLine(
"IBufferConstruction.ConstructBuffers: {0:N2} ms per geometry",
(double)watch.ElapsedMilliseconds / iterations);
}
public void Dispose()
{
ComUtils.ReleaseComObject(_construction);
_properties = null;
_construction = null;
}
public void LearningTestBufferConstructionHandlingEmptyInput()
{
var inputBag = new GeometryBagClass();
IBufferConstruction bufferConstruction = GetBufferConstruction();
IGeometryBag outputBag = new GeometryBagClass();
bufferConstruction.ConstructBuffers(inputBag, 10,
(IGeometryCollection)outputBag);
Assert.AreEqual(0, ((IGeometryCollection)outputBag).GeometryCount);
}
/// <summary>
/// Initializes a new instance of the <see cref="BufferFactory"/> class.
/// </summary>
/// <param name="explodeBuffers">if set to <c>true</c> multipart buffers will be exploded.</param>
/// <param name="densify">if set to <c>true</c> straight line segments are used to represent the buffer output (i.e. <see cref="GenerateCurves"/> is set to <c>false</c>). Otherwise, curve segments are used in the output.</param>
/// <param name="densifyDeviation"> The maximum distance between a line connecting two buffer curve points and the true curve
/// (defaults to -1, indicating 1000 * xy tolerance of spatial reference of input geometries ).</param>
public BufferFactory(bool explodeBuffers = false, bool densify = false,
double densifyDeviation = -1)
{
_construction = new BufferConstructionClass();
_properties = (IBufferConstructionProperties)_construction;
_properties.ExplodeBuffers = explodeBuffers;
if (densify)
{
_properties.GenerateCurves = false;
_properties.DensifyDeviation = densifyDeviation;
}
}
