private static bool IsAccessPoint(Polyline acPline, int index)
{
Document acDoc = Autodesk.AutoCAD.ApplicationServices.Core.Application.DocumentManager.MdiActiveDocument;
Database acCurrDb = acDoc.Database;
Editor acEditor = acDoc.Editor;
try
{
DBDictionary outlineExtDict = JPPUtils.getOutlineExtensionDictionary(acPline);
// Retrieve the Xrecord
ResultBuffer rbLevel = JPPUtils.getXrecord(outlineExtDict.Id, "Vertex_" + index.ToString());
TypedValue[] xrecData = rbLevel.AsArray();
if (xrecData[1].Value.ToString() == "Access_Point")
{
return(true);
}
else
{
return(false);
}
}
catch (Autodesk.AutoCAD.Runtime.Exception acException)
{
Autodesk.AutoCAD.ApplicationServices.Application.ShowAlertDialog
("The following exception was caught: \n" + acException.Message
+ "\nError checking for access point\n");
return(true);
}
}
private static bool Brickwork(bool exposed, ObjectId fflBlockId)
{
Document acDoc = Autodesk.AutoCAD.ApplicationServices.Core.Application.DocumentManager.MdiActiveDocument;
Database acCurrDb = acDoc.Database;
Editor acEditor = acDoc.Editor;
// Find the outline polyline object
Polyline outline = FetchOutline(fflBlockId);
if (outline == null)
{
acEditor.WriteMessage("\nError, unable to retrieve FFL Block ID!");
return(false);
}
// Retrieve the extension dictionary for the outline
DBDictionary blockOutlineExtDict = JPPUtils.getOutlineExtensionDictionary(outline);
if (blockOutlineExtDict == null)
{
acEditor.WriteMessage("\nError, unable to retrieve extension dictionary of outline!");
return(false);
}
// Retrieve the level at each vertex from the Xrecords in the outline extenstion dictionary
double[] levels = new double[outline.NumberOfVertices]; // Array to store the levels
for (int index = 0; index < outline.NumberOfVertices; index++)
{
ResultBuffer rbLevel = JPPUtils.getXrecord(blockOutlineExtDict.Id, "Vertex_" + index.ToString());
TypedValue[] xrecData = rbLevel.AsArray();
levels[index] = Convert.ToDouble(xrecData[3].Value);
}
// Retrieve the FFL
ResultBuffer rbFFL = JPPUtils.getXrecord(blockOutlineExtDict.Id, "FFL");
double FFL = Convert.ToDouble(rbFFL.AsArray()[0].Value);
// Create the offset polyline
DBObjectCollection offsetOutlineObjects = outline.GetOffsetCurves(0.300);
if ((offsetOutlineObjects.Count != 1) || (offsetOutlineObjects[0].GetType() != typeof(Polyline)))
{
acEditor.WriteMessage("\nError, unable to create offset outline!");
return(false);
}
Polyline offsetOutline = offsetOutlineObjects[0] as Polyline;
// For each vertex of the outline polyline check the level against the FFL. If it is
// less the FFL - 0.15 then there is exposed brickwork, if it is greater than FFL - 0.015
// tanking is required.
// At the first occurence the coordinates of the previous vertex need to be saved
double threshold = FFL - 0.15;
int startVertex = 0;
// Check if the level of vertex 0 is above of below threshold. If it is iterate anticlockwise
// around the outline until a vertex with a level at the threshold is found. This
// defines the start point to work round the outline.
if ((levels[startVertex] < threshold) || (levels[startVertex] > FFL))
{
for (int index = outline.NumberOfVertices - 1; index >= 0; index--)
{
if ((levels[index] > threshold) || (levels[index] < threshold))
{
// Found the start point for this run of exposed or tanked brickwork
startVertex = index;
break;
}
}
}
Point2dCollection hatchBoundaryPoints = new Point2dCollection();
Point2dCollection offsetVertices = new Point2dCollection();
List <int> cornerTextIndex = new List <int>();
bool creatingHatchBoundary = false;
for (int index = 0; index < outline.NumberOfVertices; index++)
{
int vertexIndex;
if (index < (outline.NumberOfVertices - startVertex))
{
vertexIndex = index + startVertex;
}
else
{
vertexIndex = index - (outline.NumberOfVertices - startVertex);
}
if ((exposed && levels[vertexIndex] < threshold) ||
(!exposed && (!IsAccessPoint(outline, vertexIndex)) && levels[vertexIndex] > threshold))
{
if (hatchBoundaryPoints.Count == 0) // First vertex above or below the threshold
{
// First point of the hatch boundary will be the previous vertex.
// Also, check to see if vertex is an access point. If it is then the hatch boundary point needs to be moved
// to accommodate this. It is assumed the access point will be 900mm wide.
Point2d firstVertex = new Point2d();
if (vertexIndex == 0)
{
firstVertex = CheckForAccessPoint(outline, outline.NumberOfVertices - 1, true);
}
else
{
firstVertex = CheckForAccessPoint(outline, vertexIndex - 1, true);
}
hatchBoundaryPoints.Add(firstVertex);
creatingHatchBoundary = true;
}
hatchBoundaryPoints.Add(outline.GetPoint2dAt(vertexIndex));
offsetVertices.Add(offsetOutline.GetPoint2dAt(vertexIndex));
// Check if this vertex is a corner by comparing the angle of the 1st vector and 2nd vector
if (IsCorner(outline, vertexIndex))
{
cornerTextIndex.Add(vertexIndex);
cornerTextIndex.Add(Convert.ToInt32(Math.Ceiling((threshold - levels[vertexIndex]) / 0.075)));
}
}
else if (creatingHatchBoundary) // At the end of an exposed brickwork run
{
Point2d lastVertex = CheckForAccessPoint(outline, vertexIndex, false);
hatchBoundaryPoints.Add(lastVertex);
// offsetVertices.Add(offsetPLine.GetPoint2dAt(vertexIndex));
// Now need to close the hatch boundary
for (int index2 = offsetVertices.Count - 1; index2 >= 0; index2--)
{
hatchBoundaryPoints.Add(offsetVertices[index2]);
}
// Call the function to add the hatch
if (!AddHatch(hatchBoundaryPoints, fflBlockId, exposed))
{
acEditor.WriteMessage("\nError, unable to exposed brick or tanking hatch!");
return(false);
}
// Call function to add text
if (!AddCourseText(cornerTextIndex, offsetOutline, fflBlockId, exposed))
{
acEditor.WriteMessage("\nError, unable to exposed brick or tanking text!");
return(false);
}
hatchBoundaryPoints.Clear();
offsetVertices.Clear();
cornerTextIndex.Clear();
creatingHatchBoundary = false;
}
}
return(true);
}
private static Point2d CheckForAccessPoint(Polyline acPline, int index, bool atStart)
{
Document acDoc = Autodesk.AutoCAD.ApplicationServices.Core.Application.DocumentManager.MdiActiveDocument;
Database acCurrDb = acDoc.Database;
Editor acEditor = acDoc.Editor;
int nextVertexIndex = 0;
int previousVertexIndex = 0;
Point2d newPoint = new Point2d();
try
{
// This function determines whether the point passed to the function is an access point; if it
// is then an offset to allow for the access point opening is calculated and the offset point coordinates
// returned. The direction of the offset is applied in depends on whether this is the start or end
// of the hatch boundary.
// If it's the start of the hatch boundary the offset is applied in the direction of the vector from
// this point to the next vertex.
// If it's the end of the hatch boundary the offset is applied in the direction of a vector from this
// to the previous point.
// First check if point is an access point as there's nothing to do if not.
// Fetch the extension dictionary
DBDictionary outlineExtDict = JPPUtils.getOutlineExtensionDictionary(acPline);
// Retrieve the Xrecord
ResultBuffer rbLevel = JPPUtils.getXrecord(outlineExtDict.Id, "Vertex_" + index.ToString());
TypedValue[] xrecData = rbLevel.AsArray();
if (xrecData[1].Value.ToString() != "Access_Point")
{
return(newPoint = acPline.GetPoint2dAt(index));
}
// First check if the point is the first vertex of the outline previous or next vertex index.
if (atStart)
{
if (index == acPline.NumberOfVertices - 1)
{
nextVertexIndex = 0;
}
else
{
nextVertexIndex = index + 1;
}
// Calculate new point based on the vector angle
double vectorAngle = acPline.GetPoint2dAt(index).GetVectorTo(acPline.GetPoint2dAt(nextVertexIndex)).Angle;
newPoint = new Point2d(acPline.GetPoint2dAt(index).X + (Constants.Access_Point_Width / 2) * Math.Cos(vectorAngle),
acPline.GetPoint2dAt(index).Y + (Constants.Access_Point_Width / 2) * Math.Sin(vectorAngle));
}
else
{
if (index == 0)
{
previousVertexIndex = acPline.NumberOfVertices - 1;
}
else
{
previousVertexIndex = index - 1;
}
// Calculate new point based on the vector angle
double vectorAngle = acPline.GetPoint2dAt(previousVertexIndex).GetVectorTo(acPline.GetPoint2dAt(index)).Angle;
newPoint = new Point2d(acPline.GetPoint2dAt(index).X - (Constants.Access_Point_Width / 2) * Math.Cos(vectorAngle),
acPline.GetPoint2dAt(index).Y - (Constants.Access_Point_Width / 2) * Math.Sin(vectorAngle));
}
}
catch (Autodesk.AutoCAD.Runtime.Exception acException)
{
Autodesk.AutoCAD.ApplicationServices.Application.ShowAlertDialog
("The following exception was caught: \n" + acException.Message
+ "\nError accessing vertex Xrecord\n");
newPoint = acPline.GetPoint2dAt(index);
}
return(newPoint);
}
