/// <summary>
/// Returns an array of objects that intersect with the specified bounds, if any. Otherwise returns an empty array. See also: IsColliding.
/// </summary>
/// <param name="checkBounds">Bounds to check. Passing by ref as it improve performance with structs.</param>
/// <param name="result">List result.</param>
/// <returns>Objects that intersect with the specified bounds.</returns>
public void GetColliding(ref HLBoundingBoxXYZ checkBounds, List <T> result, Filter <T> flt)
{
// Are the input bounds at least partially in this node?
if (!bounds.Intersects(checkBounds))
{
return;
}
// Check against any objects in this node
for (int i = 0; i < objects.Count; i++)
{
if (objects[i].Bounds.Intersects(checkBounds))
{
result.Add(objects[i].Obj);
}
}
// Check children
if (children != null)
{
for (int i = 0; i < 8; i++)
{
children[i].GetColliding(ref checkBounds, result, flt);
}
}
}
/*
* /// <summary>
* /// Get the total amount of objects in this node and all its children, grandchildren etc. Useful for debugging.
* /// </summary>
* /// <param name="startingNum">Used by recursive calls to add to the previous total.</param>
* /// <returns>Total objects in this node and its children, grandchildren etc.</returns>
* public int GetTotalObjects(int startingNum = 0) {
* int totalObjects = startingNum + objects.Count;
* if (children != null) {
* for (int i = 0; i < 8; i++) {
* totalObjects += children[i].GetTotalObjects();
* }
* }
* return totalObjects;
* }
*/
// #### PRIVATE METHODS ####
/// <summary>
/// Set values for this node.
/// </summary>
/// <param name="baseLengthVal">Length of this node, not taking looseness into account.</param>
/// <param name="minSizeVal">Minimum size of nodes in this octree.</param>
/// <param name="loosenessVal">Multiplier for baseLengthVal to get the actual size.</param>
/// <param name="centerVal">Centre position of this node.</param>
void SetValues(float baseLengthVal, float minSizeVal, float loosenessVal, XYZ centerVal)
{
BaseLength = baseLengthVal;
minSize = minSizeVal;
looseness = loosenessVal;
Center = centerVal;
adjLength = looseness * baseLengthVal;
// Create the bounding box.
var size = new XYZ(adjLength, adjLength, adjLength);
bounds = new HLBoundingBoxXYZ(Center, size);
float quarter = BaseLength / 4f;
float childActualLength = (BaseLength / 2) * looseness;
var childActualSize = new XYZ(childActualLength, childActualLength, childActualLength);
childBounds = new HLBoundingBoxXYZ[8];
childBounds[0] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, quarter, -quarter), childActualSize);
childBounds[1] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, quarter, -quarter), childActualSize);
childBounds[2] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, quarter, quarter), childActualSize);
childBounds[3] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, quarter, quarter), childActualSize);
childBounds[4] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, -quarter, -quarter), childActualSize);
childBounds[5] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, -quarter, -quarter), childActualSize);
childBounds[6] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, -quarter, quarter), childActualSize);
childBounds[7] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, -quarter, quarter), childActualSize);
}
/// <summary>
/// Check if the specified bounds intersect with anything in the tree. See also: GetColliding.
/// </summary>
/// <param name="checkBounds">Bounds to check.</param>
/// <returns>True if there was a collision.</returns>
public bool IsColliding(ref HLBoundingBoxXYZ checkBounds, Filter <T> flt)
{
// Are the input bounds at least partially in this node?
if (!GeoUtils.DoBoxesIntersect(bounds, checkBounds, 0))
{
return(false);
}
// Check against any objects in this node
for (int i = 0; i < objects.Count; i++)
{
var obj = objects[i];
if ((flt == null || flt.Invoke(obj.Obj)) && GeoUtils.DoBoxesIntersect(objects[i].Bounds, checkBounds, 0))
{
return(true);
}
}
// Check children
if (children != null)
{
for (int i = 0; i < 8; i++)
{
if (children[i].IsColliding(ref checkBounds, flt))
{
return(true);
}
}
}
return(false);
}
/// <summary>
/// Private counterpart to the public Add method.
/// </summary>
/// <param name="obj">Object to add.</param>
/// <param name="objBounds">3D bounding box around the object.</param>
void SubAdd(T obj, HLBoundingBoxXYZ objBounds)
{
// We know it fits at this level if we've got this far
// Just add if few objects are here, or children would be below min size
if (objects.Count < numObjectsAllowed || (BaseLength / 2) < minSize)
{
OctreeObject newObj = new OctreeObject {
Obj = obj, Bounds = objBounds
};
//Debug.Log("ADD " + obj.name + " to depth " + depth);
objects.Add(newObj);
}
else
{
// Fits at this level, but we can go deeper. Would it fit there?
// Create the 8 children
int bestFitChild;
if (children == null)
{
Split();
if (children == null)
{
// Debug.Log("Child creation failed for an unknown reason. Early exit.");
return;
}
// Now that we have the new children, see if this node's existing objects would fit there
for (int i = objects.Count - 1; i >= 0; i--)
{
OctreeObject existingObj = objects[i];
// Find which child the object is closest to based on where the
// object's center is located in relation to the octree's center.
bestFitChild = BestFitChild(existingObj.Bounds);
// Does it fit?
if (Encapsulates(children[bestFitChild].bounds, existingObj.Bounds))
{
children[bestFitChild].SubAdd(existingObj.Obj, existingObj.Bounds); // Go a level deeper
objects.Remove(existingObj); // Remove from here
}
}
}
// Now handle the new object we're adding now
bestFitChild = BestFitChild(objBounds);
if (Encapsulates(children[bestFitChild].bounds, objBounds))
{
children[bestFitChild].SubAdd(obj, objBounds);
}
else
{
OctreeObject newObj = new OctreeObject {
Obj = obj, Bounds = objBounds
};
//Debug.Log("ADD " + obj.name + " to depth " + depth);
objects.Add(newObj);
}
}
}
// #### PUBLIC METHODS ####
/// <summary>
/// Add an object.
/// </summary>
/// <param name="obj">Object to add.</param>
/// <param name="objBounds">3D bounding box around the object.</param>
/// <returns>True if the object fits entirely within this node.</returns>
public bool Add(T obj, HLBoundingBoxXYZ objBounds)
{
if (!Encapsulates(bounds, objBounds))
{
return(false);
}
SubAdd(obj, objBounds);
return(true);
}
/// <summary>
/// Check if the specified bounds intersect with anything in the tree. See also: GetColliding.
/// </summary>
/// <param name="checkBounds">bounds to check.</param>
/// <returns>True if there was a collision.</returns>
public bool IsColliding(HLBoundingBoxXYZ checkBounds, Filter <T> flt = null)
{
//#if UNITY_EDITOR
// For debugging
//AddCollisionCheck(checkBounds);
//#endif
return(rootNode.IsColliding(ref checkBounds, flt));
}
/// <summary>
/// Returns an array of objects that intersect with the specified bounds, if any. Otherwise returns an empty array. See also: IsColliding.
/// </summary>
/// <param name="checkBounds">bounds to check.</param>
/// <returns>Objects that intersect with the specified bounds.</returns>
public T[] GetColliding(HLBoundingBoxXYZ checkBounds, Filter <T> flt = null)
{
//#if UNITY_EDITOR
// For debugging
//AddCollisionCheck(checkBounds);
//#endif
List <T> collidingWith = new List <T>();
rootNode.GetColliding(ref checkBounds, collidingWith, flt);
return(collidingWith.ToArray());
}
// #### PUBLIC METHODS ####
/// <summary>
/// Add an object.
/// </summary>
/// <param name="obj">Object to add.</param>
/// <param name="objBounds">3D bounding box around the object.</param>
public void Add(T obj, HLBoundingBoxXYZ objBounds)
{
// Add object or expand the octree until it can be added
int count = 0; // Safety check against infinite/excessive growth
while (!rootNode.Add(obj, objBounds))
{
Grow(objBounds.MidPoint - rootNode.Center);
if (++count > 20)
{
//Debug.LogError("Aborted Add operation as it seemed to be going on forever (" + (count - 1) + ") attempts at growing the octree.");
return;
}
}
Count++;
}
/// <summary>
/// Return objects that are within maxDistance of the specified ray.
/// </summary>
/// <param name="ray">The ray.</param>
/// <param name="maxDistance">Maximum distance from the ray to consider.</param>
/// <param name="result">List result.</param>
/// <returns>Objects within range.</returns>
public void GetNearby(ref XYZ point, ref float maxDistance, List <T> result)
{
// Does the ray hit this node at all?
// Note: Expanding the bounds is not exactly the same as a real distance check, but it's fast.
// TODO: Does someone have a fast AND accurate formula to do this check?
//bounds.ExpandToContain(new XYZ(maxDistance * 2, maxDistance * 2, maxDistance * 2));
HLBoundingBoxXYZ d = new HLBoundingBoxXYZ(bounds.MidPoint, bounds.Size);
d.ExpandToContain(new XYZ(bounds.Max.X + maxDistance, bounds.Max.Y + maxDistance, bounds.Max.Z + maxDistance));
d.ExpandToContain(new XYZ(bounds.Min.X - maxDistance, bounds.Min.Y - maxDistance, bounds.Min.Z - maxDistance));
bool intersected = d.Contains(point);
d.Size = actualBoundsSize;
if (!intersected)
{
return;
}
// Check against any objects in this node
for (int i = 0; i < objects.Count; i++)
{
if (System.Math.Abs(objects[i].Pos.DistanceTo(point)) <= maxDistance)
{
result.Add(objects[i].Obj);
}
}
// Check children
if (children != null)
{
for (int i = 0; i < 8; i++)
{
children[i].GetNearby(ref point, ref maxDistance, result);
}
}
}
/*
* /// <summary>
* /// Get the total amount of objects in this node and all its children, grandchildren etc. Useful for debugging.
* /// </summary>
* /// <param name="startingNum">Used by recursive calls to add to the previous total.</param>
* /// <returns>Total objects in this node and its children, grandchildren etc.</returns>
* public int GetTotalObjects(int startingNum = 0) {
* int totalObjects = startingNum + objects.Count;
* if (children != null) {
* for (int i = 0; i < 8; i++) {
* totalObjects += children[i].GetTotalObjects();
* }
* }
* return totalObjects;
* }
*/
// #### PRIVATE METHODS ####
/// <summary>
/// Set values for this node.
/// </summary>
/// <param name="baseLengthVal">Length of this node, not taking looseness into account.</param>
/// <param name="minSizeVal">Minimum size of nodes in this octree.</param>
/// <param name="centerVal">Centre position of this node.</param>
void SetValues(float baseLengthVal, float minSizeVal, XYZ centerVal)
{
SideLength = baseLengthVal;
minSize = minSizeVal;
Center = centerVal;
// Create the bounding box.
actualBoundsSize = new XYZ(SideLength, SideLength, SideLength);
bounds = new HLBoundingBoxXYZ(Center, actualBoundsSize);
float quarter = SideLength / 4f;
float childActualLength = SideLength / 2;
var childActualSize = new XYZ(childActualLength, childActualLength, childActualLength);
childBounds = new HLBoundingBoxXYZ[8];
childBounds[0] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, quarter, -quarter), childActualSize);
childBounds[1] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, quarter, -quarter), childActualSize);
childBounds[2] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, quarter, quarter), childActualSize);
childBounds[3] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, quarter, quarter), childActualSize);
childBounds[4] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, -quarter, -quarter), childActualSize);
childBounds[5] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, -quarter, -quarter), childActualSize);
childBounds[6] = new HLBoundingBoxXYZ(Center + new XYZ(-quarter, -quarter, quarter), childActualSize);
childBounds[7] = new HLBoundingBoxXYZ(Center + new XYZ(quarter, -quarter, quarter), childActualSize);
}
/// <summary>
/// Returns an axis aligned box which for extents of only visible geometry
/// Solid.GetBoundingBox method includes planes and non-visible geometry
/// </summary>
/// <param name="geoObj"></param>
/// <param name="parentTransform"></param>
/// <returns></returns>
public static HLBoundingBoxXYZ GetGeoBoundingBox(Solid geoObj, Transform parentTransform)
{
HLBoundingBoxXYZ box = null;
var sld = geoObj as Solid;
foreach (var edge in sld.Edges.OfType <Edge>())
{
foreach (var pt in edge.Tessellate())
{
var ptx = parentTransform.OfPoint(pt);
if (box == null)
{
box = new HLBoundingBoxXYZ(ptx, new XYZ(0.01, 0.01, 0.01));
}
else
{
box.ExpandToContain(ptx);
}
}
}
return(box);
}
public virtual void ParseFrom(Element elm, MEPRevitGraphWriter writer)
{
var scannedElements = writer.Cache.ParsedElements;
var cpTree = writer.Cache.connectorsCache;
var geoTree = writer.Cache.geoCache;
var maxDepth = writer.Cache.MaxDepth;
var graph = writer.Graph;
var elmStack = new Stack <Tuple <Element, XYZ> >();
elmStack.Push(new Tuple <Element, XYZ>(elm, null));
var previouseConnections = new HashSet <Connector>();
while (elmStack.Count >= 1)
{
var currentElementAndpt = elmStack.Pop();
var currentElement = currentElementAndpt.Item1;
var orgPoint = currentElementAndpt.Item2;
scannedElements.Add(currentElement.Id.IntegerValue);
ConnectorManager currentCm = Utils.MEPUtils.GetConnectionManager(currentElement);
if (currentCm == null)
{
continue;
}
var connStack = new Stack <Connector>();
foreach (var conn in currentCm.Connectors.OfType <Connector>().Where(cn => cn.ConnectorType == ConnectorType.End || cn.ConnectorType == ConnectorType.Curve))// && !previouseConnections.Any(pc => pc.IsConnectedTo(cn))))
{
connStack.Push(conn);
}
XYZ nextOrigin = null;
while (connStack.Count >= 1)
{
var currentConn = connStack.Pop();
Connector nextConnector = null;
Element nextElement = null;
nextOrigin = currentConn.Origin;
MEPRevitEdge edge = null;
var meps = GetSectionForConnctor(currentConn);
var edgeType = MEPGraph.Model.MEPEdgeTypes.FLOWS_TO;
switch (currentConn.Domain)
{
case Autodesk.Revit.DB.Domain.DomainCableTrayConduit:
edgeType = MEPGraph.Model.MEPEdgeTypes.CABLETRAY_FLOW_TO;
break;
case Autodesk.Revit.DB.Domain.DomainElectrical:
edgeType = MEPGraph.Model.MEPEdgeTypes.ELECTRICAL_FLOW_TO;
break;
case Autodesk.Revit.DB.Domain.DomainPiping:
edgeType = MEPGraph.Model.MEPEdgeTypes.HYDRONIC_FLOW_TO;
break;
case Autodesk.Revit.DB.Domain.DomainHvac:
edgeType = MEPGraph.Model.MEPEdgeTypes.AIR_FLOW_TO;
break;
case Autodesk.Revit.DB.Domain.DomainUndefined:
edgeType = MEPGraph.Model.MEPEdgeTypes.FLOWS_TO;
break;
}
if (currentConn.IsConnected)
{
//var ci = currentConn.GetMEPConnectorInfo();
//connection search
nextConnector = currentConn.AllRefs.OfType <Connector>().Where(cn => (cn.ConnectorType == ConnectorType.End || cn.ConnectorType == ConnectorType.Curve) && cn.IsConnectedTo(currentConn) && cn.Owner.Id.IntegerValue != currentElement.Id.IntegerValue).FirstOrDefault();
if (nextConnector != null)
{
previouseConnections.Add(currentConn);
edge = graph.AddConnection(currentConn, nextConnector, MEPPathConnectionType.Phyiscal, edgeType);
nextElement = nextConnector.Owner;
}
}
if (nextConnector == null)
{
//geometry search
var connPoint = currentConn.Origin;
var nearPoints = cpTree.GetNearby(connPoint, 1F);
var nearPointsOrdered = nearPoints.Where(el => el.OriginatingElement.IntegerValue != currentElement.Id.IntegerValue).OrderBy(d => d.Point.DistanceTo(connPoint)).ToList();
var nearest = nearPointsOrdered.FirstOrDefault();
if (nearest != null)
{
var distance = nearest.Point.DistanceTo(connPoint);
if (distance < 0.01F)
{
var nearElm = elm.Document.GetElement(nearest.OriginatingElement);
if (nearElm != null)
{
var mepm = MEPUtils.GetConnectionManager(nearElm);
#if REVIT2016
nextConnector = (mepm != null) ? mepm.Connectors.OfType <Connector>().Where(cn => (cn.ConnectorType == ConnectorType.End || cn.ConnectorType == ConnectorType.Curve) && cn.Id == nearest.ConnectorIndex).FirstOrDefault() : null;
#else
throw new Exception("Only supported in Revit 2016 onwards");
#endif
if (nextConnector != null)
{
previouseConnections.Add(currentConn);
edge = graph.AddConnection(currentConn, nextConnector, MEPPathConnectionType.Proximity, edgeType);
nextElement = nextConnector.Owner;
//nextOrigin = nextConnector.Origin;
}
}
}
}
if (nextConnector == null && geoTree != null)
{
//todo: curve - point intersection check
var colBox = new HLBoundingBoxXYZ(connPoint, new XYZ(0.1, 0.1, 0.1));
var nearbyCurves = geoTree.GetColliding(colBox);
var nearbyCurve = nearbyCurves.OfType <CurveGeometrySegment>().Where(nb => nb.OriginatingElement.IntegerValue != currentConn.Owner.Id.IntegerValue).OrderBy(nd => nd.Geometry.Distance(connPoint)).FirstOrDefault();
if (nearbyCurve != null)
{
var distance = nearbyCurve.Geometry.Distance(connPoint);
//check if connector is sitting near or with extent of the mepcurve
var tolerence = 0.01;
if (distance < tolerence ||
nearbyCurve.Radius > 0.001 && distance <= (nearbyCurve.Radius + tolerence) ||
nearbyCurve.Width > 0.001 && distance <= (nearbyCurve.Width + tolerence) ||
nearbyCurve.Height > 0.001 && distance <= (nearbyCurve.Height + tolerence))
{
//how to add this connection to the graph with no next connector??
var orgElme = elm.Document.GetElement(nearbyCurve.OriginatingElement);
edge = graph.AddConnection(currentConn, connPoint, orgElme, MEPPathConnectionType.ProximityNoConnector, edgeType);
nextElement = orgElme;
//nextOrigin = connPoint;
}
}
}
}
if (edge != null && edge.Length < 0.1)
{
if (meps != null)
{
edge.Length = meps.TotalCurveLength;
edge.SetWeight("Roughness", meps.Roughness);
edge.SetWeight("ReynoldsNumber", meps.ReynoldsNumber);
edge.SetWeight("Velocity", meps.Velocity);
edge.SetWeight("VelocityPressure", meps.VelocityPressure);
edge.SetWeight("Flow", meps.Flow);
}
else if (orgPoint != null && nextOrigin != null)
{
var length = Math.Abs(orgPoint.DistanceTo(nextOrigin));
//very crude way to get length, should really be using MEPSection
if (length >= 0.1)
{
edge.Length = length;
}
}
}
ScanSpacesFromElement(currentConn, graph, scannedElements, nextElement == null);
var currentDepth = elmStack.Count;
if (nextElement != null && (maxDepth == -1 || currentDepth < maxDepth) && !scannedElements.Contains(nextElement.Id.IntegerValue))// && !graph.ContainsElement(nextElement))
{
elmStack.Push(new Tuple <Element, XYZ>(nextElement, nextOrigin));
//ScanFromElement(elm, graph, cpTree, maxDepth, currentDepth++);
}
}
//check curve for nearby unconnected points
if (cpTree != null && currentElement is MEPCurve)
{
//point - curve intersection check
var curveElm = currentElement as MEPCurve;
var locCurve = curveElm.Location as LocationCurve;
var curve = locCurve.Curve;
var nearbyCurve = new CurveGeometrySegment(curve, currentElement);
var P1 = curve.GetEndPoint(0);
var P2 = curve.GetEndPoint(1);
var curveAsLine = curve is Line ? curve as Line : Line.CreateBound(P1, P2);
var nearbyCurves = cpTree.GetNearby(curveAsLine, (float)nearbyCurve.MaxDimension);
foreach (var cb in nearbyCurves)
{
if (cb.OriginatingElement.IntegerValue == currentElement.Id.IntegerValue)
{
continue;
}
if (P1.DistanceTo(cb.Point) < 0.01)
{
continue;
}
if (P2.DistanceTo(cb.Point) < 0.01)
{
continue;
}
var tolerence = 0.01;
var cnpoint = curveAsLine.Project(cb.Point);
var distance = cnpoint.Distance;
//distance check is a crude way to check this element is sitting in the duct/pipe, could be nearby but intended to be connected.
if (distance < (nearbyCurve.MaxDimension / 2) + tolerence)
{
var orgElme = elm.Document.GetElement(cb.OriginatingElement);
if (orgElme == null)
{
continue;
}
var cmgr = MEPUtils.GetConnectionManager(orgElme);
if (cmgr == null)
{
continue;
}
#if REVIT2016
var nc = cmgr.Connectors.OfType <Connector>().FirstOrDefault(cn => cn.Id == cb.ConnectorIndex);
#else
Connector nc = null;
#endif
if (nc == null || nc.IsConnected)
{
continue;
}
//further check that direction of point intersects curve
var prjInX = nc.CoordinateSystem.OfPoint(new XYZ(0, 0, 5));
var prjInnX = nc.CoordinateSystem.OfPoint(new XYZ(0, 0, -5));
var prjLine = Line.CreateBound(prjInnX, prjInX);
var ix = curveAsLine.Intersect(prjLine);
if (ix != SetComparisonResult.Overlap)
{
continue;
}
var edge = graph.AddConnection(nc, cnpoint.XYZPoint, currentElement, MEPPathConnectionType.ProximityNoConnector, MEPGraph.Model.MEPEdgeTypes.FLOWS_TO);
if (orgPoint != null)
{
edge.Length = Math.Abs(orgPoint.DistanceTo(cnpoint.XYZPoint));
}
if (!scannedElements.Contains(orgElme.Id.IntegerValue) && !elmStack.Any(el => el.Item1 == orgElme))// && !graph.ContainsElement(nextElement))
{
elmStack.Push(new Tuple <Element, XYZ>(orgElme, cnpoint.XYZPoint));
}
}
}
}
ScanSpacesFromElement(currentElement, graph, scannedElements);
}
}
/// <summary>
/// Checks if outerBounds encapsulates the given point.
/// </summary>
/// <param name="outerBounds">Outer bounds.</param>
/// <param name="point">Point.</param>
/// <returns>True if innerBounds is fully encapsulated by outerBounds.</returns>
static bool Encapsulates(HLBoundingBoxXYZ outerBounds, XYZ point)
{
return(outerBounds.Contains(point));
}
public void ParseFrom(Element elm, MEPRevitGraphWriter writer)
{
var space = elm as Autodesk.Revit.DB.Mechanical.Space;
if (space == null)
{
return;
}
if (space.Volume < 0.5)
{
return;
}
var scannedElements = writer.Cache.ParsedElements;
var cpTree = writer.Cache.connectorsCache;
var geoTree = writer.Cache.geoCache;
var maxDepth = writer.Cache.MaxDepth;
var graph = writer.Graph;
var lvl = space.Level;
if (lvl != null)
{
graph.AddConnection(elm, lvl, MEPPathConnectionType.Proximity, MEPEdgeTypes.IS_ON);
}
//get elements in the space
//get areas with edges and add to walls
var sbopt = new SpatialElementBoundaryOptions();
sbopt.SpatialElementBoundaryLocation = SpatialElementBoundaryLocation.Finish;
sbopt.StoreFreeBoundaryFaces = true;
//var geoOpt = new Options();
//var spgeo = space.get_Geometry(geoOpt);
//get nearby spaces by extending bb of space
//foreach each face of space geometry
//split into uv gripd
//construct line from each point
//get intersect with faces on nearby faces
//if it hits increment area count for direction
var doc = space.Document;
SpatialElementGeometryCalculator sg = new SpatialElementGeometryCalculator(doc, sbopt);
var spgets = sg.CalculateSpatialElementGeometry(space);
var spgeo = spgets.GetGeometry();
//var spbb = spgeo.GetBoundingBox();
var spbb = elm.get_BoundingBox(null);
//var spbbhl = new HLBoundingBoxXYZ(spbb);
//spbbhl.Size = spbbhl.Size + new XYZ(2, 2, 4);
//get faces
var uvdensity = 0.75;
var maxDistance = 4D;
//var nearbyFaces = nearbySpaces.OfType<SolidGeometrySegment>().Where(spc => spc.OriginatingElement != space.Id).SelectMany(sp => sp.Geometry.Faces.OfType<Face>());
var rayIncidents = new HashSet <FaceIntersectRay>();
//get all the faces in the geometry
var spfaces = spgeo.Faces.OfType <Face>().ToList();
foreach (var gface in spfaces)
{
//extract the faces which bound with other elements (Walls, floors, ceilings, windows etc)
var sfaceInfos = spgets.GetBoundaryFaceInfo(gface);
foreach (var sfaceInfo in sfaceInfos)
{
//get the geo face and element of this bounding face
var sface = sfaceInfo.GetSubface();
var elmId = sfaceInfo.SpatialBoundaryElement;
var lelm = GetElementFromLinkedElement(elmId, doc);
var docIdent = string.Empty;
//if (lelm == null) continue; //ignore this face if it doesn't resolve to a valid element
//find the bounding uv box so we can work out a grid of points
var fbb = sface.GetBoundingBox();
var uExt = uvdensity; // (fbb.Max.U - fbb.Min.U) / uvdensity;
var vExt = uvdensity; // (fbb.Max.V - fbb.Min.V) / uvdensity;
var u = fbb.Min.U;
var v = fbb.Min.V;
//var sb = new GeoLib.C2DPolygon();
//construct grid for ray tracing
Stack <UV> gridPoints = new Stack <UV>();
while (u <= fbb.Max.U)
{
v = fbb.Min.V;
while (v <= fbb.Max.V)
{
var uvp = new UV(u, v);
v += uvdensity;
if (!sface.IsInside(uvp))
{
continue; //only include points that are actually on this face
}
gridPoints.Push(uvp);
}
u += uvdensity;
}
var nerbyCheckCats = new int[] { };
IList <ElementId> hostElms = new List <ElementId>();
if (lelm != null && !(lelm is HostObject))
{
var n = lelm;
}
if (lelm != null)
{
docIdent = DocUtils.GetDocumentIdent(lelm.Document);
//get cutting elemtns if it's a wall so we can find door and windows
if (lelm is HostObject)
{
var whost = lelm as HostObject;
hostElms = whost.FindInserts(true, true, true, true);
//build oct tree of hostelems so we can quickly ray trace them later
foreach (var hostElm in hostElms)
{
//ignoring any link and transform for now
var ehl = whost.Document.GetElement(hostElm);
writer.Cache.geoCacheWriter.AddElement(ehl, true);
}
}
//we need the nearby check to find the cut out elements
nerbyCheckCats = new int[] { (int)BuiltInCategory.OST_Doors, (int)BuiltInCategory.OST_Windows };
}
else
{
nerbyCheckCats = new int[] { (int)BuiltInCategory.OST_Doors, (int)BuiltInCategory.OST_Windows, (int)BuiltInCategory.OST_Floors, (int)BuiltInCategory.OST_Walls, (int)BuiltInCategory.OST_Roofs };
//we need the nearby check to find the bounding element
switch (sfaceInfo.SubfaceType)
{
case SubfaceType.Bottom:
nerbyCheckCats = new int[] { (int)BuiltInCategory.OST_Floors };
break;
case SubfaceType.Top:
nerbyCheckCats = new int[] { (int)BuiltInCategory.OST_Roofs, (int)BuiltInCategory.OST_Floors, (int)BuiltInCategory.OST_Windows };
break;
case SubfaceType.Side:
nerbyCheckCats = new int[] { (int)BuiltInCategory.OST_Doors, (int)BuiltInCategory.OST_Windows, (int)BuiltInCategory.OST_Walls };
break;
}
}
//option 1 - brute force ray trace
//option 2 - construct 2d polygon from edges of each face, translate each face into the same plane, then boolean intersect, get area of each intersect
//calc space boundaries at midpoint?
Face optLastIntermeidateFace = null;
SolidGeometrySegment optLastIntermeidateSegment = null;
Face optLastHitFace = null;
SolidGeometrySegment optLastHitSegment = null;
var arWeight = sface.Area / gridPoints.Count;
while (gridPoints.Count > 0)
{
var pt = gridPoints.Pop();
var rayIncident = new FaceIntersectRay();
var nv = sface.ComputeNormal(pt).Normalize();
//var mx = sface.ComputeSecondDerivatives(pt).MixedDerivative.Normalize();
rayIncident.SourceElement = space;
rayIncident.SourceFace = sface;
rayIncident.SourceUV = pt;
rayIncident.RayVecotor = nv;
rayIncident.IntermediatDocIdent = docIdent;
rayIncident.IntermeidateElement = lelm != null ? lelm.Id : ElementId.InvalidElementId;
rayIncident.AreaWeight = arWeight;
rayIncident.SubFaceType = sfaceInfo.SubfaceType;
rayIncidents.Add(rayIncident);
var sp = sface.Evaluate(pt);
rayIncident.SourceXYZ = sp;
var ray = Line.CreateBound(sp, sp + nv * 4);
var rayBB = new HLBoundingBoxXYZ(sp, (sp + nv * 4), true);
//rayBB.Size = rayBB.Size + new XYZ(0.5, 0.5, 0.5);
//Plane geoPlane = Plane.c(sp, sp + nv * 5, sp + nv * 5 + (mx * 0.2));
//SketchPlane skPlane = SketchPlane.Create(doc, geoPlane);
//doc.Create.NewModelCurve(ray, skPlane);
//check cache for hit on otherside, if there is one nearby on this face we can ignore it as we're not including both sides
//var nearbyrayHits = writer.Cache.rayhitCache.GetNearby(ray, 0.4F);
//var validSimilarHit = nearbyrayHits.FirstOrDefault(rh => rh.HittingSegment != null && rh.HittingSegment.OriginatingElement == space.Id && rh.IntermeidateElement == rayIncident.IntermeidateElement);
//if (validSimilarHit != null && sface.IsInside(validSimilarHit.HittingUV))
//{
// rayIncident.Ignore = true;
// log.Info("Got hit on other side, ignoring");
// continue;
// }
if (optLastIntermeidateFace != null)
{
IntersectionResultArray issRes = null;
var issGeoHit = getIntersect(pt, optLastIntermeidateFace, sface, maxDistance, out issRes, out double distance, nv, doc);
if (issGeoHit)
{
rayIncident.IntermediatDocIdent = optLastIntermeidateSegment.OriginatingDocIdent;
rayIncident.IntermeidateElement = optLastIntermeidateSegment.OriginatingElement;
}
else
{
optLastIntermeidateFace = null;
optLastIntermeidateSegment = null;
}
}
GeometrySegment[] nearbyElements = null;
if (optLastIntermeidateFace == null)
{
nearbyElements = geoTree.GetColliding(rayBB);
var nearbyCutoutElements = nearbyElements.Where(iel =>
(hostElms.Count == 0 || hostElms.Contains(iel.OriginatingElement)) &&
nerbyCheckCats.Contains(iel.OriginatingElementCategory.IntegerValue))
.OfType <SolidGeometrySegment>();
IntersectionResultArray isRes = null;
bool isGeoHit = false;
foreach (var extSegment in nearbyCutoutElements)
{
foreach (var extFace in extSegment.Geometry.Faces.OfType <Face>())
{
isGeoHit = getIntersect(pt, extFace, sface, maxDistance, out isRes, out double distance, nv, doc);
if (isGeoHit)
{
rayIncident.IntermediatDocIdent = extSegment.OriginatingDocIdent;
rayIncident.IntermeidateElement = extSegment.OriginatingElement;
optLastIntermeidateFace = extFace;
optLastIntermeidateSegment = extSegment;
break;
}
}
if (isGeoHit)
{
break;
}
}
}
if (optLastHitFace != null)
{
var isHit = getIntersect(pt, optLastHitFace, sface, maxDistance, out var isRe, out double distance, nv, doc);
var isRes = isRe;
//project point onto other face instead?
var srcXYZ = sface.Evaluate(pt);
var otXYZRes = optLastHitFace.Project(srcXYZ);
if (isHit)
{
var itx = isRes.OfType <IntersectionResult>().FirstOrDefault();
rayIncident.HittingFace = optLastHitFace;
rayIncident.HittingSegment = optLastHitSegment;
rayIncident.HittingUV = itx.UVPoint;
rayIncident.HittingXYZ = itx.XYZPoint;
rayIncident.Distance = distance;
nv = sface.ComputeNormal(pt).Normalize();
continue; //shortcut if we find a hit on the same face again
}
else
{
optLastHitFace = null;
optLastHitSegment = null;
}
}
if (nearbyElements == null)
{
nearbyElements = geoTree.GetColliding(rayBB, (ob) => { return(ob.OriginatingElementCategory.IntegerValue == (int)BuiltInCategory.OST_MEPSpaces); });
}
//BoundingBoxIntersectsFilter bif = new BoundingBoxIntersectsFilter(new Outline(sp - new XYZ(0.1, 0.1, 0.1), (sp + nv * 2) + new XYZ(0.1, 0.1, 0.1)));
//var sfv = new FilteredElementCollector(space.Document);
//var sepl = sfv.WherePasses(bif).ToElements();
var nearbySpaces = nearbyElements.Where(ne => ne.OriginatingElementCategory.IntegerValue == (int)BuiltInCategory.OST_MEPSpaces).OfType <SolidGeometrySegment>().Distinct().ToList();
//find the extents of this face which face faces on other nearby faces (whaaat?)
//check each face of each nearby space for intersect with ray
foreach (var nearSpace in nearbySpaces)
{
var isHit = false;
foreach (var otFace in nearSpace.Geometry.Faces.OfType <Face>())
{
isHit = getIntersect(pt, otFace, sface, maxDistance, out var isRe, out double distance, nv, doc);
var isRes = isRe;
//project point onto other face instead?
var srcXYZ = sface.Evaluate(pt);
var otXYZRes = otFace.Project(srcXYZ);
if (isHit)
{
if (nearSpace.OriginatingElement.IntegerValue != elm.Id.IntegerValue)
{
var itx = isRes.OfType <IntersectionResult>().FirstOrDefault();
rayIncident.HittingFace = otFace;
rayIncident.HittingSegment = nearSpace;
rayIncident.HittingUV = itx.UVPoint;
rayIncident.HittingXYZ = itx.XYZPoint;
rayIncident.Distance = distance;
nv = sface.ComputeNormal(pt).Normalize();
//optimization: check this face again first for the next ray check, since it's likely to be another hit
optLastHitFace = otFace;
optLastHitSegment = nearSpace;
rayIncident.Ignore = false;
}
else
{
if (distance < 0.1)
{
isHit = false; //looks like we hit our own face, ouch!
}
rayIncident.Ignore = true;
}
break;
}
}
if (isHit)
{
break;
}
}
}
}
/*
* space
* face
* intermediate element (Wall/window/door)
* face (space)
* face
*
*
* add connection
* this space -> section -> other space
* wall ------------^
*/
}
//var ec = new elmComparer();
var srcNode = graph.AddElement(space);
double minIncluedArea = 4;
VectorBucketiser vbw = new VectorBucketiser(8, 5);
var includeRays = rayIncidents.Where(r => !r.Ignore);
var outsideNode = graph.Nodes.FirstOrDefault(n => n.Name == "Outside");
var groundNode = graph.Nodes.FirstOrDefault(n => n.Name == "Ground");
//group by the intermediate element (wall/floor/etc)
foreach (var docGroup in includeRays.GroupBy(ri => ri.IntermediatDocIdent))//, ec))
{
var sdoc = DocUtils.GetDocument(docGroup.Key, elm.Document.Application);
foreach (var intermediateElemGroup in docGroup.GroupBy(ri => ri.IntermeidateElement.IntegerValue))//, ec))
{
var selmid = new ElementId(intermediateElemGroup.Key);
Element selm = sdoc != null?sdoc.GetElement(selmid) : null;
//group similar vectors into buckets
foreach (var rayVectorBuckets in intermediateElemGroup.GroupBy(ri => vbw.GetBucket(ri.RayVecotor)))
{
var rg = rayVectorBuckets.ToList();
var gs = rg.GroupBy(vr => vr.HittingSegment == null ? null : vr.HittingSegment.OriginatingElement).ToList();
//group each vector and intermediate element by the element it hits
foreach (var orgElmGroup in gs)
{
//find a section already matching this section
//actually easier to treat each path as separate sections
//var edNodes = graph.GetEdges(intermediateElemGroup.Key).Where(ed => ed.NextNode.AsAbstractNode.Name == "Surface"
//&& ed.NextNode.Connections.Any(cn => cn.NextNode.OriginId == spNode.OriginId)).Where(ed => ed.;
var apporxIntersect = orgElmGroup.Sum(et => et.AreaWeight);
var vector = orgElmGroup.First().RayVecotor;
if (apporxIntersect < minIncluedArea)
{
continue;
}
var direction = VectorBucketiser.GetZeroClamppedPoint(orgElmGroup.First().RayVecotor); //should be rayVectorGroup.Key.AverageVector, but not yet implemented;
MEPRevitNode spNode = null;
if (orgElmGroup.Key != null)
{
var otherSpace = doc.GetElement(orgElmGroup.Key);
spNode = graph.AddElement(otherSpace);
}
else
{
if (selm != null && (selm.Name.ToLower().Contains("exterior") || selm is Autodesk.Revit.DB.Opening || selm.Name.ToLower().Contains("window") || selm is Autodesk.Revit.DB.RoofBase))
{
if (outsideNode == null)
{
outsideNode = new MEPRevitNode("Outside", "Boundary", "OutsideBoundary", new MEPGraph.Model.Environment());
}
spNode = outsideNode;
}
else if (selm != null && (selm.Name.ToLower().Contains("floor") || selm is Autodesk.Revit.DB.Floor))
{
if (groundNode == null)
{
groundNode = new MEPRevitNode("Ground", "Boundary", "GroundBoundary", new MEPGraph.Model.Environment());
}
spNode = groundNode;
}
else
{
spNode = new MEPRevitNode("Void", "Boundary", "OtherBoundary", new MEPGraph.Model.VoidVolume());
continue; //ignore void boundaries for now
}
}
var sectionN = graph.NewSection(selm, MEPGraph.Model.MEPEdgeTypes.IS_ON);
if (selm == null)
{
var emptyBondary = new MEPRevitNode();
emptyBondary.AsAbstractNode.Name = "OpenBoundary";
var cl = graph.AddConnection(emptyBondary, sectionN, MEPPathConnectionType.SectionOf, MEPGraph.Model.MEPEdgeTypes.IS_ON);
cl.AsNodeEdge.ExtendedProperties.Add("rvid", intermediateElemGroup.Key);
}
sectionN.AsAbstractNode.Name = "Surface";
var edgesf = graph.AddConnection(srcNode, sectionN, MEPPathConnectionType.Analytical, MEPGraph.Model.MEPEdgeTypes.BOUNDED_BY);
//total up intersecting area
var sampleIntersect = orgElmGroup.First();
edgesf.SetWeight("Area", apporxIntersect);
//edgesf.SetWeight("Direction", new HoareLea.MEPGraph.Model.MEPPoint(direction.X, direction.Y, direction.Z));
edgesf.SetWeight("DirectionX", direction.X);
edgesf.SetWeight("DirectionY", direction.Y);
edgesf.SetWeight("DirectionZ", direction.Z);
edgesf.SetWeight("SubFaceType", (int)sampleIntersect.SubFaceType);
/*
* HLBoundingBoxXYZ bb = new HLBoundingBoxXYZ();
* foreach (var et in orgElmGroup)
* {
* if (et.HittingXYZ != null)
* {
* bb.ExpandToContain(et.HittingXYZ);
* }
* }
* if (!bb.IsInvalid)
* {
* sectionN.BoundingBox = bb;
* var avgCenterPoint = bb.MidPoint;
* var size = bb.Size;
* sectionN.SetProperty("OriginX", avgCenterPoint.X);
* sectionN.SetProperty("OriginY", avgCenterPoint.Y);
* sectionN.SetProperty("OriginZ", avgCenterPoint.Z);
* sectionN.SetProperty("SizeX", size.X);
* sectionN.SetProperty("SizeY", size.Y);
* sectionN.SetProperty("SizeZ", size.Z);
* }*/
var edgest = graph.AddConnection(sectionN, spNode, MEPPathConnectionType.Analytical, MEPGraph.Model.MEPEdgeTypes.BOUNDED_BY);
var directionn = direction;//.Negate();
edgest.SetWeight("Area", apporxIntersect);
edgest.SetWeight("DirectionX", directionn.X);
edgest.SetWeight("DirectionY", directionn.Y);
edgest.SetWeight("DirectionZ", directionn.Z);
edgest.SetWeight("SubFaceType", (int)sampleIntersect.SubFaceType);
}
}
}
}
}
/// <summary>
/// Find which child node this object would be most likely to fit in.
/// </summary>
/// <param name="objBounds">The object's bounds.</param>
/// <returns>One of the eight child octants.</returns>
int BestFitChild(HLBoundingBoxXYZ objBounds)
{
return((objBounds.MidPoint.X <= Center.X ? 0 : 1) + (objBounds.MidPoint.Y >= Center.Y ? 0 : 4) + (objBounds.MidPoint.Z <= Center.Z ? 0 : 2));
}
/// <summary>
/// Checks if outerBounds encapsulates innerBounds.
/// </summary>
/// <param name="outerBounds">Outer bounds.</param>
/// <param name="innerBounds">Inner bounds.</param>
/// <returns>True if innerBounds is fully encapsulated by outerBounds.</returns>
static bool Encapsulates(HLBoundingBoxXYZ outerBounds, HLBoundingBoxXYZ innerBounds)
{
return(outerBounds.Contains(innerBounds.Min) && outerBounds.Contains(innerBounds.Max));
}
public static bool DoBoxesIntersect(HLBoundingBoxXYZ r1, HLBoundingBoxXYZ r2, double tolerance)
{
return(r1.Min.X <= r2.Max.X && r1.Max.X >= r2.Min.X && r1.Min.Y <= r2.Max.Y && r1.Max.Y >= r2.Min.Y && r1.Min.Z <= r2.Max.Z && r1.Max.Z >= r2.Min.Z);
}
