private void btnConstructMultiTriMesh_Click(object sender, EventArgs e)
{
try
{
if (gfactory == null)
gfactory = new GeometryFactory();
multiTriMesh = gfactory.CreateGeometry(gviGeometryType.gviGeometryMultiTrimesh, gviVertexAttribute.gviVertexAttributeZ) as IMultiTriMesh;
if (multiTriMesh == null)
return;
triMesh = gfactory.CreateGeometry(gviGeometryType.gviGeometryTriMesh, gviVertexAttribute.gviVertexAttributeZ) as ITriMesh;
if (triMesh == null)
return;
ArrayList vertices = new ArrayList(); //ITopoNode数组
point = gfactory.CreatePoint(gviVertexAttribute.gviVertexAttributeZ);
for (int i = 0; i < 17; ++i)
{
point.SetCoords(i, i, i, 0, 0);
vertices.Add(triMesh.AddPoint(point));
}
triMesh.AddTriangle(vertices[0] as ITopoNode, vertices[1] as ITopoNode, vertices[2] as ITopoNode);
triMesh.AddTriangle(vertices[2] as ITopoNode, vertices[1] as ITopoNode, vertices[3] as ITopoNode);
triMesh.AddTriangle(vertices[3] as ITopoNode, vertices[1] as ITopoNode, vertices[4] as ITopoNode);
triMesh.AddTriangle(vertices[3] as ITopoNode, vertices[4] as ITopoNode, vertices[5] as ITopoNode);
triMesh.AddTriangle(vertices[5] as ITopoNode, vertices[4] as ITopoNode, vertices[6] as ITopoNode);
triMesh.AddTriangle(vertices[5] as ITopoNode, vertices[6] as ITopoNode, vertices[7] as ITopoNode);
triMesh.AddTriangle(vertices[7] as ITopoNode, vertices[6] as ITopoNode, vertices[8] as ITopoNode);
triMesh.AddTriangle(vertices[7] as ITopoNode, vertices[8] as ITopoNode, vertices[9] as ITopoNode);
triMesh.AddTriangle(vertices[7] as ITopoNode, vertices[9] as ITopoNode, vertices[10] as ITopoNode);
triMesh.AddTriangle(vertices[10] as ITopoNode, vertices[9] as ITopoNode, vertices[11] as ITopoNode);
triMesh.AddTriangle(vertices[10] as ITopoNode, vertices[11] as ITopoNode, vertices[12] as ITopoNode);
triMesh.AddTriangle(vertices[13] as ITopoNode, vertices[10] as ITopoNode, vertices[12] as ITopoNode);
triMesh.AddTriangle(vertices[13] as ITopoNode, vertices[14] as ITopoNode, vertices[10] as ITopoNode);
triMesh.AddTriangle(vertices[13] as ITopoNode, vertices[15] as ITopoNode, vertices[14] as ITopoNode);
triMesh.AddTriangle(vertices[15] as ITopoNode, vertices[16] as ITopoNode, vertices[14] as ITopoNode);
triMesh.AddTriangle(vertices[16] as ITopoNode, vertices[5] as ITopoNode, vertices[14] as ITopoNode);
triMesh.AddTriangle(vertices[3] as ITopoNode, vertices[5] as ITopoNode, vertices[16] as ITopoNode);
triMesh.AddTriangle(vertices[2] as ITopoNode, vertices[3] as ITopoNode, vertices[16] as ITopoNode);
multiTriMesh.AddGeometry(triMesh);
MultiSurface geo = new MultiSurface();
// Geometry属性
geo.Dimension = multiTriMesh.Dimension;
if (multiTriMesh.Envelope != null)
{
geo.MaxX = multiTriMesh.Envelope.MaxX;
geo.MaxY = multiTriMesh.Envelope.MaxY;
geo.MaxZ = multiTriMesh.Envelope.MaxZ;
geo.MinX = multiTriMesh.Envelope.MinX;
geo.MinY = multiTriMesh.Envelope.MinY;
geo.MinZ = multiTriMesh.Envelope.MinZ;
}
geo.GeometryType = multiTriMesh.GeometryType;
geo.IsEmpty = multiTriMesh.IsEmpty;
geo.IsValid = multiTriMesh.IsValid;
geo.VertexAttribute = multiTriMesh.VertexAttribute;
geo.HasId = multiTriMesh.HasId();
geo.HasM = multiTriMesh.HasM();
geo.HasZ = multiTriMesh.HasZ();
// GeometryCollection属性
geo.GeometryCount = multiTriMesh.GeometryCount;
geo.IsOverlap = multiTriMesh.IsOverlap;
// MultiSurface属性
geo.Area = multiTriMesh.GetArea();
this.propertyGrid1.SelectedObject = geo;
}
catch (System.Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
}
}
private void btnConstructMultiPolygon_Click(object sender, EventArgs e)
{
if (gfactory == null)
gfactory = new GeometryFactory();
multiPolygon = gfactory.CreateGeometry(gviGeometryType.gviGeometryMultiPolygon, gviVertexAttribute.gviVertexAttributeZ) as IMultiPolygon;
if (multiPolygon == null)
return;
//添加第一个polygon
IPolygon polygonFirst = gfactory.CreateGeometry(gviGeometryType.gviGeometryPolygon, gviVertexAttribute.gviVertexAttributeZ) as IPolygon;
if (polygonFirst == null)
return;
/// 外环顺时针：1-4-3-2-1
/// 4-------3
/// | |
/// | |
/// 1-------2
IRing exteriorRing = polygonFirst.ExteriorRing;
point = gfactory.CreatePoint(gviVertexAttribute.gviVertexAttributeZ);
point.SetCoords(0, 0, 0, 0, 1);
exteriorRing.AppendPoint(point);
point.SetCoords(0, 200, 0, 0, 2);
exteriorRing.AppendPoint(point);
point.SetCoords(100, 200, 0, 0, 3);
exteriorRing.AppendPoint(point);
point.SetCoords(100, 0, 0, 0, 4);
exteriorRing.AppendPoint(point);
point.SetCoords(0, 0, 0, 0, 5);
exteriorRing.AppendPoint(point); //闭合
/// 内环逆时针：1-2-3-4-1
/// 4-------3
/// | |
/// | |
/// 1-------2
IRing interiorRing = gfactory.CreateGeometry(gviGeometryType.gviGeometryRing, gviVertexAttribute.gviVertexAttributeZ) as IRing;
point.SetCoords(25, 25, 0, 0, 1);
interiorRing.AppendPoint(point);
point.SetCoords(75, 25, 0, 0, 2);
interiorRing.AppendPoint(point);
point.SetCoords(75, 75, 0, 0, 3);
interiorRing.AppendPoint(point);
point.SetCoords(25, 75, 0, 0, 4);
interiorRing.AppendPoint(point);
point.SetCoords(25, 25, 0, 0, 5);
interiorRing.AppendPoint(point); //闭合
polygonFirst.AddInteriorRing(interiorRing);
//Clone一个新的内环
IRing pInteriorRingNew = interiorRing.Clone() as IRing;
polygonFirst.AddInteriorRing(pInteriorRingNew);
multiPolygon.AddPolygon(polygonFirst);
//Clone一个新的polygon
IPolygon pPolygonNew = polygonFirst.Clone() as IPolygon;
multiPolygon.AddPolygon(pPolygonNew);
MultiSurface geo = new MultiSurface();
// Geometry属性
geo.Dimension = multiPolygon.Dimension;
if (multiPolygon.Envelope != null)
{
geo.MaxX = multiPolygon.Envelope.MaxX;
geo.MaxY = multiPolygon.Envelope.MaxY;
geo.MaxZ = multiPolygon.Envelope.MaxZ;
geo.MinX = multiPolygon.Envelope.MinX;
geo.MinY = multiPolygon.Envelope.MinY;
geo.MinZ = multiPolygon.Envelope.MinZ;
}
geo.GeometryType = multiPolygon.GeometryType;
geo.IsEmpty = multiPolygon.IsEmpty;
geo.IsValid = multiPolygon.IsValid;
geo.VertexAttribute = multiPolygon.VertexAttribute;
geo.HasId = multiPolygon.HasId();
geo.HasM = multiPolygon.HasM();
geo.HasZ = multiPolygon.HasZ();
// GeometryCollection属性
geo.GeometryCount = multiPolygon.GeometryCount;
geo.IsOverlap = multiPolygon.IsOverlap;
// MultiSurface属性
geo.Area = multiPolygon.GetArea();
this.propertyGrid1.SelectedObject = geo;
}