ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Data.Analyst3D Namespace / TinFilter Class / FilterEnvelope Property
Example Version

FilterEnvelope Property
Gets and sets an envelope filter. Default value is null meaning that the envelope searched is the TIN's data area, See TinDataset.GetDataArea.
Syntax
public Envelope FilterEnvelope {get; set;}
Remarks
Use this to specify a specific area to search rather than the TIN's data area. If specified, the envelope will be projected into the spatial reference of the TIN dataset.
Example
Search for TIN Nodes
// search all nodes
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinDataset.SearchNodes(null))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search within an extent
ArcGIS.Core.Data.Analyst3D.TinNodeFilter nodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
nodeFilter.FilterEnvelope = envelope;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinDataset.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search all "inside" nodes
nodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
nodeFilter.FilterType = ArcGIS.Core.Data.Analyst3D.TinFilterType.InsideDataArea;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinDataset.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search for super nodes only
nodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
nodeFilter.FilterEnvelope = tinDataset.GetSuperNodeExtent();
nodeFilter.SuperNode = true;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinDataset.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}
Search for TIN Edges
// search all edges
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinDataset.SearchEdges(null))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}

// search within an extent
ArcGIS.Core.Data.Analyst3D.TinEdgeFilter edgeFilter = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilter.FilterEnvelope = envelope;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinDataset.SearchEdges(edgeFilter))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}

// search all "inside" edges
edgeFilter = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilter.FilterType = ArcGIS.Core.Data.Analyst3D.TinFilterType.InsideDataArea;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinDataset.SearchEdges(edgeFilter))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}

// search for hard edges
edgeFilter = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilter.FilterByEdgeType = true;
edgeFilter.EdgeType = ArcGIS.Core.Data.Analyst3D.TinEdgeType.HardEdge;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinDataset.SearchEdges(edgeFilter))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}
Search for TIN Triangles
// search all triangles
using (ArcGIS.Core.Data.Analyst3D.TinTriangleCursor triangleCursor = tinDataset.SearchTriangles(null))
{
  while (triangleCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinTriangle triangle = triangleCursor.Current)
    {

    }
  }
}

// search within an extent
ArcGIS.Core.Data.Analyst3D.TinTriangleFilter triangleFilter = new ArcGIS.Core.Data.Analyst3D.TinTriangleFilter();
triangleFilter.FilterEnvelope = envelope;
using (ArcGIS.Core.Data.Analyst3D.TinTriangleCursor triangleCursor = tinDataset.SearchTriangles(triangleFilter))
{
  while (triangleCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinTriangle triangle = triangleCursor.Current)
    {

    }
  }
}

// search all "inside" triangles
triangleFilter = new ArcGIS.Core.Data.Analyst3D.TinTriangleFilter();
triangleFilter.FilterType = ArcGIS.Core.Data.Analyst3D.TinFilterType.InsideDataArea;
using (ArcGIS.Core.Data.Analyst3D.TinTriangleCursor triangleCursor = tinDataset.SearchTriangles(triangleFilter))
{
  while (triangleCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinTriangle triangle = triangleCursor.Current)
    {

    }
  }
}
Seach for TIN Nodes, Edges, Triangles
// search all "inside" nodes
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(null))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search "inside" nodes with an extent
ArcGIS.Core.Data.Analyst3D.TinNodeFilter nodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
nodeFilter.FilterEnvelope = envelope;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search for super nodes only
var supernodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
supernodeFilter.FilterEnvelope = tinDataset.GetSuperNodeExtent();
supernodeFilter.DataElementsOnly = false;
supernodeFilter.SuperNode = true;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}


// search all edges within an extent
//    this could include outside or edges attached to super nodes depending upon the extent
ArcGIS.Core.Data.Analyst3D.TinEdgeFilter edgeFilterAll = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilterAll.FilterEnvelope = envelope;
edgeFilterAll.DataElementsOnly = false;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinLayer.SearchEdges(edgeFilterAll))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {
    }
  }
}


// search for hard edges in the TIN
var edgeFilter = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilter.FilterByEdgeType = true;
edgeFilter.EdgeType = ArcGIS.Core.Data.Analyst3D.TinEdgeType.HardEdge;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinLayer.SearchEdges(edgeFilter))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}


// search for "inside" triangles in an extent
ArcGIS.Core.Data.Analyst3D.TinTriangleFilter triangleFilter = new ArcGIS.Core.Data.Analyst3D.TinTriangleFilter();
triangleFilter.FilterEnvelope = envelope;
triangleFilter.DataElementsOnly = true;
using (ArcGIS.Core.Data.Analyst3D.TinTriangleCursor triangleCursor = tinLayer.SearchTriangles(triangleFilter))
{
  while (triangleCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinTriangle triangle = triangleCursor.Current)
    {
    }
  }
}
Seach for TIN Nodes, Edges, Triangles
// search all "inside" nodes
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(null))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search "inside" nodes with an extent
ArcGIS.Core.Data.Analyst3D.TinNodeFilter nodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
nodeFilter.FilterEnvelope = envelope;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search for super nodes only
var supernodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
supernodeFilter.FilterEnvelope = tinDataset.GetSuperNodeExtent();
supernodeFilter.DataElementsOnly = false;
supernodeFilter.SuperNode = true;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}


// search all edges within an extent
//    this could include outside or edges attached to super nodes depending upon the extent
ArcGIS.Core.Data.Analyst3D.TinEdgeFilter edgeFilterAll = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilterAll.FilterEnvelope = envelope;
edgeFilterAll.DataElementsOnly = false;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinLayer.SearchEdges(edgeFilterAll))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {
    }
  }
}


// search for hard edges in the TIN
var edgeFilter = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilter.FilterByEdgeType = true;
edgeFilter.EdgeType = ArcGIS.Core.Data.Analyst3D.TinEdgeType.HardEdge;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinLayer.SearchEdges(edgeFilter))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}


// search for "inside" triangles in an extent
ArcGIS.Core.Data.Analyst3D.TinTriangleFilter triangleFilter = new ArcGIS.Core.Data.Analyst3D.TinTriangleFilter();
triangleFilter.FilterEnvelope = envelope;
triangleFilter.DataElementsOnly = true;
using (ArcGIS.Core.Data.Analyst3D.TinTriangleCursor triangleCursor = tinLayer.SearchTriangles(triangleFilter))
{
  while (triangleCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinTriangle triangle = triangleCursor.Current)
    {
    }
  }
}
Seach for TIN Nodes, Edges, Triangles
// search all "inside" nodes
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(null))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search "inside" nodes with an extent
ArcGIS.Core.Data.Analyst3D.TinNodeFilter nodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
nodeFilter.FilterEnvelope = envelope;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}

// search for super nodes only
var supernodeFilter = new ArcGIS.Core.Data.Analyst3D.TinNodeFilter();
supernodeFilter.FilterEnvelope = tinDataset.GetSuperNodeExtent();
supernodeFilter.DataElementsOnly = false;
supernodeFilter.SuperNode = true;
using (ArcGIS.Core.Data.Analyst3D.TinNodeCursor nodeCursor = tinLayer.SearchNodes(nodeFilter))
{
  while (nodeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinNode node = nodeCursor.Current)
    {

    }
  }
}


// search all edges within an extent
//    this could include outside or edges attached to super nodes depending upon the extent
ArcGIS.Core.Data.Analyst3D.TinEdgeFilter edgeFilterAll = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilterAll.FilterEnvelope = envelope;
edgeFilterAll.DataElementsOnly = false;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinLayer.SearchEdges(edgeFilterAll))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {
    }
  }
}


// search for hard edges in the TIN
var edgeFilter = new ArcGIS.Core.Data.Analyst3D.TinEdgeFilter();
edgeFilter.FilterByEdgeType = true;
edgeFilter.EdgeType = ArcGIS.Core.Data.Analyst3D.TinEdgeType.HardEdge;
using (ArcGIS.Core.Data.Analyst3D.TinEdgeCursor edgeCursor = tinLayer.SearchEdges(edgeFilter))
{
  while (edgeCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinEdge edge = edgeCursor.Current)
    {

    }
  }
}


// search for "inside" triangles in an extent
ArcGIS.Core.Data.Analyst3D.TinTriangleFilter triangleFilter = new ArcGIS.Core.Data.Analyst3D.TinTriangleFilter();
triangleFilter.FilterEnvelope = envelope;
triangleFilter.DataElementsOnly = true;
using (ArcGIS.Core.Data.Analyst3D.TinTriangleCursor triangleCursor = tinLayer.SearchTriangles(triangleFilter))
{
  while (triangleCursor.MoveNext())
  {
    using (ArcGIS.Core.Data.Analyst3D.TinTriangle triangle = triangleCursor.Current)
    {
    }
  }
}
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.
See Also