protected override bool GetNextSliverArea(out double area, out double perimeter)
{
_latestPartSegments = null;
if (!_enumValid)
{
area = double.NaN;
perimeter = double.NaN;
return(false);
}
SegmentProxy segment = Assert.NotNull(_segmentsEnum.Current);
int currentPart = segment.PartIndex;
int segmentCount = _indexedMultiPatch.GetPartSegmentCount(currentPart);
var partSegments = new List <SegmentProxy>(segmentCount)
{
segment
};
while ((_enumValid = _segmentsEnum.MoveNext()) &&
Assert.NotNull(_segmentsEnum.Current).PartIndex == currentPart)
{
partSegments.Add(_segmentsEnum.Current);
}
List <Pnt> planePoints = QaGeometryUtils.GetPoints(partSegments);
Plane plane = QaGeometryUtils.CreatePlane((IEnumerable <SegmentProxy>)partSegments);
QaGeometryUtils.CalculateProjectedArea(plane, planePoints, out area, out perimeter);
_latestPartSegments = partSegments;
return(true);
}
public void CanProjectToPlaneTest()
{
var construction = new MultiPatchConstruction();
construction.StartRing(0, 0, 0)
.Add(5, 0, 0)
.Add(5, 0, 5)
.Add(0, 0, 5);
IMultiPatch multiPatch = construction.MultiPatch;
IIndexedMultiPatch indexedMultiPatch =
QaGeometryUtils.CreateIndexedMultiPatch(multiPatch);
IList <Pnt> points = QaGeometryUtils.GetPoints(indexedMultiPatch.GetSegments());
Plane plane = QaGeometryUtils.CreatePlane(points);
IList <WKSPointZ> projected = QaGeometryUtils.ProjectToPlane(plane, points);
ValidateForm(indexedMultiPatch, projected);
}
private static WKSPointZ[] GetWksPointZs(
[NotNull] IIndexedSegments indexedSegments,
int partIndex)
{
int partSegmentCount = indexedSegments.GetPartSegmentCount(partIndex);
var segments = new List <SegmentProxy>(partSegmentCount);
for (int segmentIndex = 0; segmentIndex < partSegmentCount; segmentIndex++)
{
segments.Add(indexedSegments.GetSegment(partIndex, segmentIndex));
}
var wksPoints = new List <WKSPointZ>(partSegmentCount + 1);
foreach (Pnt point in QaGeometryUtils.GetPoints(segments))
{
wksPoints.Add(QaGeometryUtils.GetWksPoint(point));
}
return(wksPoints.ToArray());
}
