private void btnConstructMultiPolyline_Click(object sender, EventArgs e)
{
if (gfactory == null)
gfactory = new GeometryFactory();
multiPolyline = gfactory.CreateGeometry(gviGeometryType.gviGeometryMultiPolyline, gviVertexAttribute.gviVertexAttributeZ) as IMultiPolyline;
if (multiPolyline == null)
return;
// 添加两条Polyline
point = gfactory.CreatePoint(gviVertexAttribute.gviVertexAttributeZ);
polyline = gfactory.CreateGeometry(gviGeometryType.gviGeometryPolyline, gviVertexAttribute.gviVertexAttributeZ) as IPolyline;
int length = 100;
for (int i = 0; i < length; i++)
{
point.SetCoords(i, 2 * i, 0, 0, i + 1);
polyline.AppendPoint(point);
}
IPolyline polylineClone = polyline.Clone() as IPolyline;
polylineClone.RemovePoints(50, 50);
multiPolyline.AddPolyline(polyline);
multiPolyline.AddPolyline(polylineClone);
MultiCurve geo = new MultiCurve();
// Geometry属性
geo.Dimension = multiPolyline.Dimension;
if (multiPolyline.Envelope != null)
{
geo.MaxX = multiPolyline.Envelope.MaxX;
geo.MaxY = multiPolyline.Envelope.MaxY;
geo.MaxZ = multiPolyline.Envelope.MaxZ;
geo.MinX = multiPolyline.Envelope.MinX;
geo.MinY = multiPolyline.Envelope.MinY;
geo.MinZ = multiPolyline.Envelope.MinZ;
}
geo.GeometryType = multiPolyline.GeometryType;
geo.IsEmpty = multiPolyline.IsEmpty;
geo.IsValid = multiPolyline.IsValid;
geo.VertexAttribute = multiPolyline.VertexAttribute;
geo.HasId = multiPolyline.HasId();
geo.HasM = multiPolyline.HasM();
geo.HasZ = multiPolyline.HasZ();
// GeometryCollection属性
geo.GeometryCount = multiPolyline.GeometryCount;
geo.IsOverlap = multiPolyline.IsOverlap;
// MultiCurve属性
geo.Length = multiPolyline.Length;
this.propertyGrid1.SelectedObject = geo;
}
private void ReversePolyline(ref IPolyline ply)
{
if ((ply != null) && (ply.PointCount != 0))
{
Stack <IPoint> stack = null;
stack = new Stack <IPoint>();
for (int i = 0; i < ply.PointCount; i++)
{
stack.Push(ply.GetPoint(i));
}
ply.RemovePoints(0, ply.PointCount);
while (stack.Count > 0)
{
ply.AppendPoint(stack.Pop());
}
}
}
// Shap数据中含各顶点高程数据
private bool GetPipeLineVertexs(IGeometry geo, double sHeight, double eHeight, out IPolyline route)
{
route = null;
try
{
IPolyline polyline = null;
if ((geo == null) || ((polyline = geo as IPolyline) == null))
{
return(false);
}
IPoint pointValue = null;
route = DrawGeometry.geoFactory.CreateGeometry(gviGeometryType.gviGeometryPolyline, gviVertexAttribute.gviVertexAttributeZ) as IPolyline;
if (polyline.PointCount == 2)
{
pointValue = polyline.StartPoint.Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPoint;
pointValue.Z = sHeight;
route.AppendPoint(pointValue);
pointValue = polyline.EndPoint.Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPoint;
pointValue.Z = eHeight;
route.AppendPoint(pointValue);
}
else
{
IPoint point;
Stack <int> stack = new Stack <int>();
double num4 = eHeight - sHeight;
if (Math.Abs(num4) < 0.0015)
{
point = null;
for (int i = 0; i < polyline.PointCount; i++)
{
pointValue = polyline.GetPoint(i).Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPoint;
if (i < 1)
{
pointValue.Z = sHeight;
route.AppendPoint(pointValue);
point = pointValue;
}
else if (Math.Sqrt(((pointValue.X - point.X) * (pointValue.X - point.X)) + ((pointValue.Y - point.Y) * (pointValue.Y - point.Y))) < (this._dia1 * 1.5))
{
stack.Push(i);
}
else
{
pointValue.Z = sHeight;
route.AppendPoint(pointValue);
point = pointValue;
}
}
}
else
{
double num3 = sHeight;
IPolyline o = polyline.Clone2(gviVertexAttribute.gviVertexAttributeNone) as IPolyline;
double length = o.Length;
Marshal.ReleaseComObject(o);
point = null;
for (int j = 0; j < polyline.PointCount; j++)
{
pointValue = polyline.GetPoint(j).Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPoint;
if (j < 1)
{
pointValue.Z = sHeight;
route.AppendPoint(pointValue);
point = pointValue;
}
else
{
double num2;
if ((num2 = Math.Sqrt(((pointValue.X - point.X) * (pointValue.X - point.X)) + ((pointValue.Y - point.Y) * (pointValue.Y - point.Y)))) < (this._dia1 * 1.5))
{
stack.Push(j);
}
else
{
num3 += (num2 / length) * num4;
pointValue.Z = num3;
route.AppendPoint(pointValue);
point = pointValue;
}
}
}
}
while (stack.Count > 0)
{
polyline.RemovePoints(stack.Pop(), 1);
}
}
return(true);
}
catch (Exception exception)
{
return(false);
}
}
