public static IGeometry GetGeometryComponent([NotNull] IFeature feature,
GeometryComponent component)
{
IGeometry shape = feature.Shape;
return(shape == null ? null : GetGeometryComponent(shape, component));
}
/// <summary>
/// returns -1 if neighbourFeature is polygon, geometryComponent is entireGeometry and point lies within neighbourFeature.
/// otherwise returns distance.
/// </summary>
private static double GetDistance([NotNull] IPoint point,
[NotNull] IFeature neighbourFeature,
[NotNull] IPoint nearestPoint,
GeometryComponent geometryComponent,
double maxNeededDistance,
out bool isWithinPolygon,
out bool onRightSide)
{
isWithinPolygon = false;
if (geometryComponent == GeometryComponent.Boundary &&
neighbourFeature.Shape is IPolygon)
{
return(GetDistanceToCurve(point, neighbourFeature, nearestPoint,
maxNeededDistance, out onRightSide));
}
if (geometryComponent == GeometryComponent.Vertices)
{
onRightSide = false;
return(GetDistanceToVertices(point, neighbourFeature, nearestPoint,
maxNeededDistance));
}
// other cases: create component geometry explicitly
IGeometry neighbourGeometry =
Assert.NotNull(GeometryComponentUtils.GetGeometryComponent(
neighbourFeature, geometryComponent));
if (geometryComponent == GeometryComponent.EntireGeometry &&
neighbourGeometry is IPolygon)
{
if (((IRelationalOperator)neighbourGeometry).Disjoint(point))
{
// the point is outside the polygon - get the distance to the boundary
// (faster than getting the distance to the entire polygon)
return(GetDistanceToCurve(point, neighbourFeature, nearestPoint,
maxNeededDistance, out onRightSide));
}
// the point is inside the polygon or exactly on the boundary
isWithinPolygon = true;
onRightSide = false; // polygons borders are defined counter clock wise
return(-1);
}
if (geometryComponent == GeometryComponent.EntireGeometry &&
neighbourGeometry is IPolyline)
{
return(GetDistanceToCurve(point, neighbourFeature, nearestPoint,
maxNeededDistance, out onRightSide));
}
// Use IProximityOperator.QueryNearestPoint so that the error geometry can be constructed
((IProximityOperator)neighbourGeometry).QueryNearestPoint(
point, esriSegmentExtension.esriNoExtension, nearestPoint);
onRightSide = false;
return(((IProximityOperator)point).ReturnDistance(nearestPoint));
}
private int ReportError([NotNull] IFeature pointFeature,
[NotNull] IFeature referenceFeature,
[NotNull] IPoint point,
[NotNull] IPoint nearPoint,
double distance,
double minimumDistance, bool isWithinPolygon,
GeometryComponent geometryComponent,
[CanBeNull] IValidRelationConstraint validConstraint)
{
IssueCode issueCode;
string description;
IGeometry errorGeometry;
if (isWithinPolygon)
{
description = "Point lies within polygon";
errorGeometry = GeometryFactory.Clone(point);
issueCode = validConstraint == null
? Codes[Code.PointWithin]
: Codes[Code.PointWithin_ConstraintNotFulfilled];
}
else
{
if (geometryComponent == GeometryComponent.EntireGeometry)
{
description =
string.Format(
"Point is too close to reference feature: {0}",
FormatLengthComparison(distance, "<", minimumDistance,
_spatialReference));
}
else
{
description =
string.Format(
"Point is too close to {0} of reference feature: {1}",
GeometryComponentUtils.GetDisplayText(geometryComponent),
FormatLengthComparison(distance, "<", minimumDistance,
_spatialReference));
}
bool reportAsConnectionLine = MinimumErrorLineLength >= 0 &&
distance >= MinimumErrorLineLength;
errorGeometry =
GetErrorGeometry(point, nearPoint, reportAsConnectionLine);
issueCode = validConstraint == null
? Codes[Code.PointTooClose]
: Codes[Code.PointTooClose_ConstraintNotFulfilled];
}
return(ReportError(description, errorGeometry,
issueCode, _shapeFieldName,
pointFeature, referenceFeature));
}
private static void AssertEmpty(GeometryComponent geometryComponent,
IGeometry geometry)
{
var component = GeometryComponentUtils.GetGeometryComponent(geometry,
geometryComponent);
Assert.NotNull(component);
Assert.IsTrue(component.IsEmpty);
}
public static int ReportIntersections(
[NotNull] IRow row1, int tableIndex1,
[NotNull] IRow row2, int tableIndex2,
[NotNull] IErrorReporting errorReporting,
[CanBeNull] IssueCode issueCode,
[CanBeNull] IValidRelationConstraint validRelationConstraint,
bool reportIndividualParts,
[CanBeNull] GeometryConstraint validIntersectionGeometryConstraint = null,
GeometryComponent geomComponent1 = GeometryComponent.EntireGeometry,
GeometryComponent geomComponent2 = GeometryComponent.EntireGeometry)
{
Assert.ArgumentNotNull(row1, nameof(row1));
Assert.ArgumentNotNull(row2, nameof(row2));
Assert.ArgumentNotNull(errorReporting, nameof(errorReporting));
if (row1 == row2)
{
return(_noError);
}
string errorDescription;
if (HasFulfilledConstraint(row1, tableIndex1,
row2, tableIndex2,
validRelationConstraint, "Features intersect",
out errorDescription))
{
return(_noError);
}
IGeometry shape1 = ((IFeature)row1).Shape;
IGeometry shape2 = ((IFeature)row2).Shape;
var g1 = GeometryComponentUtils.GetGeometryComponent(shape1, geomComponent1);
var g2 = GeometryComponentUtils.GetGeometryComponent(shape2, geomComponent2);
var errorCount = 0;
if (g1 != null && g2 != null)
{
foreach (IGeometry errorGeometry in
IntersectionUtils.GetAllIntersections(g1, g2))
{
if (validIntersectionGeometryConstraint == null ||
!validIntersectionGeometryConstraint.IsFulfilled(errorGeometry))
{
errorCount += errorReporting.Report(errorDescription,
errorGeometry,
issueCode, reportIndividualParts,
row1, row2);
}
}
}
return(errorCount);
}
private static IGeometry GetLineEndPoint([NotNull] IGeometry shape,
GeometryComponent component)
{
var polyCurve = shape as IPolycurve;
Assert.NotNull(polyCurve, GetNotSupportedMessage(shape, component));
return(polyCurve.IsEmpty
? new PointClass {
SpatialReference = shape.SpatialReference
}
: polyCurve.ToPoint);
}
private static IGeometry GetCentroidPoint([NotNull] IGeometry shape,
GeometryComponent component)
{
var area = shape as IArea;
Assert.NotNull(area, GetNotSupportedMessage(shape, component));
return(shape.IsEmpty
? new PointClass {
SpatialReference = shape.SpatialReference
}
: area.Centroid);
}
private static IGeometry GetBoundary([NotNull] IGeometry shape,
GeometryComponent component)
{
var topoOp = shape as ITopologicalOperator;
Assert.NotNull(topoOp, GetNotSupportedMessage(shape, component));
// note: calling Boundary on an empty MultiPatch returns a NON-EMPTY polyline
// with 5 empty vertices and length = NaN
return(shape.IsEmpty
? new PolylineClass {
SpatialReference = shape.SpatialReference
}
: topoOp.Boundary);
}
private GeometryComponent Read_GeometryComponent(BinaryReader reader)
{
var result = new GeometryComponent();
result.Version = ReadVersion(reader, 1, 0x14120B5A0);
result.IndexCount = reader.ReadUInt32();
result.VertextCount = reader.ReadUInt32();
result.IndexFormat = reader.ReadUInt32();
var indexDataLength = reader.ReadInt32();
result.IndexData = reader.ReadBytes(indexDataLength);
result.VertexStreams = Read_List(reader, Read_VertexStream, 1, 0x1411D9B70);
return(result);
}
private static IGeometry GetVertices([NotNull] IGeometry shape,
GeometryComponent component)
{
switch (shape.GeometryType)
{
case esriGeometryType.esriGeometryPoint:
return(GeometryFactory.Clone(shape));
case esriGeometryType.esriGeometryMultipoint:
case esriGeometryType.esriGeometryMultiPatch:
case esriGeometryType.esriGeometryPolygon:
case esriGeometryType.esriGeometryPolyline:
var points = (IPointCollection)GeometryFactory.Clone(shape);
IMultipoint multipoint = GeometryFactory.CreateMultipoint(points);
GeometryUtils.Simplify(multipoint);
return(multipoint);
default:
throw new ArgumentException(GetNotSupportedMessage(shape, component));
}
}
public static string GetDisplayText(GeometryComponent geometryComponent)
{
switch (geometryComponent)
{
case GeometryComponent.EntireGeometry:
return("entire geometry");
case GeometryComponent.Boundary:
return("boundary");
case GeometryComponent.Vertices:
return("vertices");
case GeometryComponent.LineEndPoints:
return("end points");
case GeometryComponent.LineStartPoint:
return("start point");
case GeometryComponent.LineEndPoint:
return("end point");
case GeometryComponent.Centroid:
return("centroid");
case GeometryComponent.LabelPoint:
return("label point");
case GeometryComponent.InteriorVertices:
return("interior vertices");
default:
throw new ArgumentOutOfRangeException(
nameof(geometryComponent), geometryComponent,
$@"Unsupported geometry component: {geometryComponent}");
}
}
public static IGeometry GetGeometryComponent([NotNull] IGeometry shape,
GeometryComponent component)
{
switch (component)
{
case GeometryComponent.EntireGeometry:
return(shape);
case GeometryComponent.Boundary:
return(GetBoundary(shape, component));
case GeometryComponent.Vertices:
return(GetVertices(shape, component));
case GeometryComponent.LineEndPoints:
return(GetLineEndPoints(shape, component));
case GeometryComponent.LineStartPoint:
return(GetLineStartPoint(shape, component));
case GeometryComponent.LineEndPoint:
return(GetLineEndPoint(shape, component));
case GeometryComponent.Centroid:
return(GetCentroidPoint(shape, component));
case GeometryComponent.LabelPoint:
return(GetLabelPoint(shape, component));
case GeometryComponent.InteriorVertices:
return(GetInteriorVertices(shape, component));
default:
throw new ArgumentOutOfRangeException(
$"Illegal geometry component: {component}");
}
}
private static IGeometry GetInteriorVertices([NotNull] IGeometry shape,
GeometryComponent component)
{
Assert.True(shape.GeometryType == esriGeometryType.esriGeometryPolyline,
GetNotSupportedMessage(shape, component));
if (shape.IsEmpty)
{
return(new MultipointClass {
SpatialReference = shape.SpatialReference
});
}
var points = (IPointCollection)GeometryFactory.Clone(shape);
points.RemovePoints(points.PointCount - 1, 1);
points.RemovePoints(0, 1);
IMultipoint multipoint = GeometryFactory.CreateMultipoint(points);
GeometryUtils.Simplify(multipoint);
return(multipoint);
}
public void ProcessNew(BoundingSphereComponent bounds, TransformComponent transform, GeometryComponent geometry) => this.Partition.Add(transform.Entity, bounds.Radius, transform.Transform, this.GeometryService);
protected virtual void UppdateGeometry(IEntityManager manager, ElementTag tag, GeometryComponent geo)
{
var en = manager.GetEntity(tag);
en.RemoveComponents <GeometryComponent>();
en.AddComponent(geo);
}
static void ComputeTangents(GeometryComponent geo)
{
var positions = geo.Positions;
var triangleIndices = geo.Indices;
var textureCoordinates = geo.TextureCoordinates;
var normals = geo.Normals;
var tan1 = new Vector3[positions.Length];
//var tan2 = new Vector3[positions.Count];
for (int t = 0; t < triangleIndices.Length; t += 3)
{
var i1 = triangleIndices[t];
var i2 = triangleIndices[t + 1];
var i3 = triangleIndices[t + 2];
var v1 = positions[i1];
var v2 = positions[i2];
var v3 = positions[i3];
var w1 = textureCoordinates[i1];
var w2 = textureCoordinates[i2];
var w3 = textureCoordinates[i3];
float x1 = v2.X - v1.X;
float x2 = v3.X - v1.X;
float y1 = v2.Y - v1.Y;
float y2 = v3.Y - v1.Y;
float z1 = v2.Z - v1.Z;
float z2 = v3.Z - v1.Z;
float s1 = w2.X - w1.X;
float s2 = w3.X - w1.X;
float t1 = w2.Y - w1.Y;
float t2 = w3.Y - w1.Y;
float r = 1.0f / (s1 * t2 - s2 * t1);
var udir = new Vector3((t2 * x1 - t1 * x2) * r, (t2 * y1 - t1 * y2) * r, (t2 * z1 - t1 * z2) * r);
//var vdir = new Vector3((s1 * x2 - s2 * x1) * r, (s1 * y2 - s2 * y1) * r, (s1 * z2 - s2 * z1) * r);
tan1[i1] += udir;
tan1[i2] += udir;
tan1[i3] += udir;
//tan2[i1] += vdir;
//tan2[i2] += vdir;
//tan2[i3] += vdir;
}
geo.Tangents = new List <Vector3>();
geo.Binormal = new List <Vector3>();
for (int i = 0; i < positions.Length; i++)
{
var n = normals[i];
var t = tan1[i];
t = (t - n * Vector3.Dot(n, t));
t.Normalize();
var b = Vector3.Cross(n, t);
geo.Tangents.Add(t);
geo.Binormal.Add(b);
}
}
private static string GetNotSupportedMessage([NotNull] IGeometry shape,
GeometryComponent component)
{
return(string.Format("{0} not supported for geometry type {1}",
component, shape.GeometryType));
}
private int CheckTable([NotNull] IFeature feature,
[NotNull] IFeatureClass referenceClass,
int referenceClassIndex)
{
GeometryComponent geometryComponent =
GetGeometryComponent(referenceClassIndex);
IValidRelationConstraint validConstraint =
GetValidRelationConstraint(referenceClassIndex);
if (_pointTemplate == null)
{
_pointTemplate = new PointClass();
}
var errorCount = 0;
foreach (IPoint point in GetNodes(feature.Shape, _pointTemplate))
{
ISpatialFilter filter = PrepareSpatialFilter(point, referenceClassIndex);
QueryFilterHelper helper = _helper[referenceClassIndex];
const int pointClassIndex = 0;
foreach (IRow referenceRow in Search((ITable)referenceClass,
filter, helper, point))
{
if (TestUtils.IsSameRow(feature, referenceRow))
{
continue;
}
var referenceFeature = (IFeature)referenceRow;
string conditionMessage;
if (validConstraint != null &&
validConstraint.HasConstraint &&
validConstraint.IsFulfilled(feature, pointClassIndex,
referenceFeature, referenceClassIndex,
out conditionMessage))
{
continue;
}
double standardDistance;
double?rightSideDistance;
double maxNeededDistance = GetMaxNeededDistance(
feature, referenceFeature, referenceClassIndex,
out standardDistance, out rightSideDistance);
maxNeededDistance = Math.Max(maxNeededDistance, _pointClassXyTolerance);
bool isWithinPolygon;
bool onRightSide;
double distance = GetDistance(point, referenceFeature, _nearPoint,
geometryComponent, maxNeededDistance,
out isWithinPolygon, out onRightSide);
if (AllowCoincidentPoints &&
IsSmallerThanXyTolerance(distance, referenceClassIndex))
{
continue;
}
if (distance > maxNeededDistance)
{
continue;
}
double minimumDistance = maxNeededDistance;
if (rightSideDistance.HasValue)
{
if (_referenceFlipConditions == null)
{
_referenceFlipConditions =
CreateFlipConditions(_referenceFlipExpressions);
}
bool flip = _referenceFlipConditions.Count > 0
? _referenceFlipConditions[
referenceClassIndex -
_firstReferenceClassIndex].IsFulfilled(
referenceFeature)
: false;
double useDistance = (onRightSide == flip)
? standardDistance
: rightSideDistance.Value;
if (distance > useDistance)
{
continue;
}
minimumDistance = useDistance;
}
errorCount += ReportError(feature, referenceFeature,
point, _nearPoint,
distance, minimumDistance,
isWithinPolygon, geometryComponent,
validConstraint);
}
}
return(errorCount);
}
public TerrainChunk(float[,] heightMap, uint chunkSize, uint offsetX, uint offsetY, ShaderResourceView texture, SamplerState sampler)
{
var mapSize = chunkSize;
var fullMapSize = heightMap.GetLength(1) - 1;
var numPoints = mapSize * 2 + 1;
var triPoints = new Vector3[numPoints * numPoints];
var triUV = new Vector2[numPoints * numPoints];
for (var z = 0; z < numPoints; z++)
{
for (var x = 0; x < numPoints; x++)
{
if (z % 2 == 0)
{
if (x % 2 == 0)
{
triPoints[x + z * numPoints] = new Vector3(x / 2 + offsetX - 0.5f,
GetHeight(heightMap, x / 2 + offsetX, z / 2 + offsetY, -1, -1),
fullMapSize - (z / 2 + offsetY - 0.5f));
}
else
{
triPoints[x + z * numPoints] = new Vector3(x / 2 + offsetX - 0.0f,
GetHeight(heightMap, x / 2 + offsetX, z / 2 + offsetY, 0, -1),
fullMapSize - (z / 2 + offsetY - 0.5f));
}
}
else
{
if (x % 2 == 0)
{
triPoints[x + z * numPoints] = new Vector3(x / 2 + offsetX - 0.5f,
GetHeight(heightMap, x / 2 + offsetX, z / 2 + offsetY, -1, 0),
fullMapSize - (z / 2 + offsetY - 0));
}
else
{
triPoints[x + z * numPoints] = new Vector3(x / 2 + offsetX - 0.0f,
GetHeight(heightMap, x / 2 + offsetX, z / 2 + offsetY, 0, 0),
fullMapSize - (z / 2 + offsetY - 0));
}
}
triUV[x + z * numPoints] = new Vector2(x / (numPoints - 1.0f), z / (numPoints - 1.0f));
}
}
var indices = new uint[mapSize * mapSize * 24];
var count = 0;
for (uint y = 0; y < numPoints - 1; y++)
{
for (uint x = 0; x < numPoints - 1; x++)
{
var mapSize2 = numPoints;
var fx = x;
if ((x % 2 == 0 && y % 2 == 0) || (x % 2 != 0 && y % 2 != 0))
{
indices[count++] = fx + y * mapSize2;
indices[count++] = fx + 1 + y * mapSize2;
indices[count++] = fx + 1 + (y + 1) * mapSize2;
indices[count++] = fx + y * mapSize2;
indices[count++] = fx + 1 + (y + 1) * mapSize2;
indices[count++] = fx + (y + 1) * mapSize2;
}
if ((x % 2 != 0 && y % 2 == 0) || (x % 2 == 0 && y % 2 != 0))
{
indices[count++] = fx + y * mapSize2;
indices[count++] = fx + 1 + y * mapSize2;
indices[count++] = fx + (y + 1) * mapSize2;
indices[count++] = fx + (y + 1) * mapSize2;
indices[count++] = fx + 1 + y * mapSize2;
indices[count++] = fx + 1 + (y + 1) * mapSize2;
}
}
}
var geo = new GeometryComponent();
geo.Executor.Geometry.Vertices = triPoints;
geo.Executor.Geometry.Normals = CalcNormals(triPoints, numPoints);
geo.Executor.Geometry.Indices = indices;
geo.Executor.Geometry.UVs = triUV;
geo.Executor.Geometry.Topology = Topology.TriangleList;
geo.Executor.RenderParameter.SetParameter("AlbedoTexture", texture);
geo.Executor.RenderParameter.SetParameter("Sampler", sampler);
this.AddComponent(geo);
}