/// <summary>
/// Implement this method as an external command for Revit.
/// </summary>
/// <param name="commandData">An object that is passed to the external application
/// which contains data related to the command,
/// such as the application object and active view.</param>
/// <param name="message">A message that can be set by the external application
/// which will be displayed if a failure or cancellation is returned by
/// the external command.</param>
/// <param name="elements">A set of elements to which the external application
/// can add elements that are to be highlighted in case of failure or cancellation.</param>
/// <returns>Return the status of the external command.
/// A result of Succeeded means that the API external method functioned as expected.
/// Cancelled can be used to signify that the user cancelled the external operation
/// at some point. Failure should be returned if the application is unable to proceed with
/// the operation.</returns>
public virtual Result Execute(ExternalCommandData commandData
, ref string message, ElementSet elements)
{
try
{
Document document = commandData.Application.ActiveUIDocument.Document;
Autodesk.Revit.DB.View view = commandData.View;
ElementId alignmentId = AlignmentSelectionFilter.SelectAlignment(document);
Alignment alignment = Alignment.Get(document.GetElement(alignmentId));
TaskDialog td = new TaskDialog("Alignment and Station Label Properties");
td.MainContent =
GetAlignmentProperties(alignment) +
GetAlignmentHorizontalCurveTypes(alignment) +
GetAlignmentStationLabelsProperties(alignment);
td.Show();
return(Result.Succeeded);
}
catch (Exception ex)
{
message = ex.Message;
return(Result.Failed);
}
}
const double labelTextOffset = 0.005; // 5mm, defined in paper space
#endregion
#region InterfaceImplementation
/// <summary>
/// Implement this method as an external command for Revit.
/// </summary>
/// <param name="commandData">An object that is passed to the external application
/// which contains data related to the command,
/// such as the application object and active view.</param>
/// <param name="message">A message that can be set by the external application
/// which will be displayed if a failure or cancellation is returned by
/// the external command.</param>
/// <param name="elements">A set of elements to which the external application
/// can add elements that are to be highlighted in case of failure or cancellation.</param>
/// <returns>Return the status of the external command.
/// A result of Succeeded means that the API external method functioned as expected.
/// Cancelled can be used to signify that the user cancelled the external operation
/// at some point. Failure should be returned if the application is unable to proceed with
/// the operation.</returns>
public virtual Result Execute(ExternalCommandData commandData
, ref string message, ElementSet elements)
{
try
{
Document document = commandData.Application.ActiveUIDocument.Document;
Autodesk.Revit.DB.View view = commandData.View;
// find major and minor station arrow styles
FilteredElementCollector fec = new FilteredElementCollector(document);
Element majorStationLeaderArrowheadType = fec.OfClass(typeof(ElementType))
.Cast <ElementType>()
.FirstOrDefault(x => x.Name.Contains(majorStationLeaderArrowheadName));
Element minorStationLeaderArrowheadType = fec.OfClass(typeof(ElementType))
.Cast <ElementType>()
.FirstOrDefault(x => x.Name.Contains(minorStationLeaderArrowheadName));
if (majorStationLeaderArrowheadType == null || minorStationLeaderArrowheadType == null)
{
TaskDialog td = new TaskDialog("Missing arrowheads");
td.MainContent = "In Manage>Additional Settings>Arrowheads, create two styles of arrowheads, named\r\n" +
"Major Station Arrowhead and Minor Station Arrowhead";
td.Show();
return(Result.Failed);
}
// find major and minor station label types; if not there, create them
SpotDimensionType majorLabelType = fec.OfClass(typeof(SpotDimensionType))
.Cast <SpotDimensionType>()
.FirstOrDefault(sdt => sdt.StyleType == DimensionStyleType.AlignmentStationLabel && sdt.Name.Contains(majorStationSetLabelTypeName));
SpotDimensionType minorLabelType = fec.OfClass(typeof(SpotDimensionType))
.Cast <SpotDimensionType>()
.FirstOrDefault(sdt => sdt.StyleType == DimensionStyleType.AlignmentStationLabel && sdt.Name.Contains(minorStationSetLabelTypeName));
SpotDimensionType curvatureLabelType = fec.OfClass(typeof(SpotDimensionType))
.Cast <SpotDimensionType>()
.FirstOrDefault(sdt => sdt.StyleType == DimensionStyleType.AlignmentStationLabel && sdt.Name.Contains(horizontalCurvatureChangeLabelTypeName));
using (Transaction t = new Transaction(document, "Create major station labels"))
{
t.Start();
if (majorLabelType == null)
{
// create major station label type with the given arrowhead style
majorLabelType = document.GetElement(AlignmentStationLabel.CreateRecommendedTypeForSet(document)) as SpotDimensionType;
majorLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_LEADER_ARROWHEAD).Set(majorStationLeaderArrowheadType.Id);
majorLabelType.Name = majorStationSetLabelTypeName;
}
if (minorLabelType == null)
{
// create minor station label type with the given arrowhead style
// exclude the station text, which leave only the arrowheads
// make the minor station's color grey
// make the text 60% of the original value, in case text is later turned on
minorLabelType = document.GetElement(AlignmentStationLabel.CreateRecommendedTypeForSet(document)) as SpotDimensionType;
minorLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_LEADER_ARROWHEAD).Set(minorStationLeaderArrowheadType.Id);
minorLabelType.get_Parameter(BuiltInParameter.ALIGNMENT_STATION_LABEL_INCLUDE_STATION).Set(0);
minorLabelType.get_Parameter(BuiltInParameter.LINE_COLOR).Set(8421504 /* 127*2^0 + 127*2^8 + 127*2^16: grey */);
Parameter textSizeParam = minorLabelType.get_Parameter(BuiltInParameter.TEXT_SIZE);
textSizeParam.Set(textSizeParam.AsDouble() * 0.6);
minorLabelType.Name = minorStationSetLabelTypeName;
}
if (curvatureLabelType == null)
{
// create a new label type, based on the default alignment station label type,
// but with some adjustments to the label contents, as described below
ElementType defaultAlignmentLabelType = document.GetElement(
document.GetDefaultElementTypeId(ElementTypeGroup.AlignmentStationLabelType)) as ElementType;
curvatureLabelType = defaultAlignmentLabelType.Duplicate(horizontalCurvatureChangeLabelTypeName) as SpotDimensionType;
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_COORDINATE_BASE).Set(1); // "Shared" coordinate base
// Label position and content
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_ROTATE_WITH_COMPONENT).Set(0); // do not rotate with component
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_TEXT_ORIENTATION).Set(0); // horizontal text
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_TEXT_LOCATION).Set(0); // text location above leader
curvatureLabelType.get_Parameter(BuiltInParameter.ALIGNMENT_STATION_LABEL_INCLUDE_STATION).Set(1); // include station
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_COORDINATE_INCLUDE_ELEVATION).Set(0); // do not include elevation
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_BOT_VALUE).Set(0); // do not include bottom value
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_TOP_VALUE).Set(0); // do not include top value
curvatureLabelType.get_Parameter(BuiltInParameter.ALIGNMENT_STATION_LABEL_IND_STATION).Set(""); // empty station indicator
// Text
curvatureLabelType.get_Parameter(BuiltInParameter.DIM_TEXT_BACKGROUND).Set(0); // nontransparent text
curvatureLabelType.get_Parameter(BuiltInParameter.LINE_COLOR).Set(255 /* 255*2^0 + 0*2^8 + 0*2^16: red */); // text in red color
Parameter textSizeParam = curvatureLabelType.get_Parameter(BuiltInParameter.TEXT_SIZE);
textSizeParam.Set(textSizeParam.AsDouble() * 0.6); // text size 60% of default
// Leader
curvatureLabelType.get_Parameter(BuiltInParameter.SPOT_ELEV_LEADER_ARROWHEAD).Set(ElementId.InvalidElementId); // no leader arrowhead
}
t.Commit();
}
// create major and minor station label sets
ElementId alignmentId = AlignmentSelectionFilter.SelectAlignment(document);
Alignment alignment = Alignment.Get(document.GetElement(alignmentId));
// start placement from a multiple of the major station interval
// make sure to compute the multiple in the proper unit system and then convert it back to internal units for further use
double labelSetsPlacementStartStation = UnitUtils.ConvertFromInternalUnits(alignment.DisplayedStartStation, UnitTypeId.StationingMeters);
labelSetsPlacementStartStation =
Math.Ceiling(labelSetsPlacementStartStation / majorStationInterval) * majorStationInterval;
labelSetsPlacementStartStation =
UnitUtils.ConvertToInternalUnits(labelSetsPlacementStartStation, UnitTypeId.StationingMeters);
var majorStations = new List <double>();
using (Transaction t = new Transaction(document, "Create major station labels"))
{
t.Start();
AlignmentStationLabelSetOptions options = new AlignmentStationLabelSetOptions();
options.Interval = UnitUtils.ConvertToInternalUnits(majorStationInterval, UnitTypeId.StationingMeters);
options.Offset = UnitUtils.ConvertToInternalUnits(labelTextOffset, UnitTypeId.StationingMeters);
options.StartStation = labelSetsPlacementStartStation;
options.EndStation = alignment.DisplayedEndStation;
options.TypeId = majorLabelType.Id;
var labels = AlignmentStationLabel.CreateSet(alignment, view, options);
foreach (var label in labels)
{
majorStations.Add(label.Station);
}
t.Commit();
}
using (Transaction t = new Transaction(document, "Create minor station labels"))
{
t.Start();
AlignmentStationLabelSetOptions options = new AlignmentStationLabelSetOptions();
options.Interval = UnitUtils.ConvertToInternalUnits(minorStationInterval, UnitTypeId.StationingMeters);
// setting text offset specification can be skipped,
// as in this example the minor station labels do not include any label text, only leader arrowheads
options.StartStation = labelSetsPlacementStartStation;
options.EndStation = labelSetsPlacementStartStation + UnitUtils.ConvertToInternalUnits(majorStationInterval, UnitTypeId.StationingMeters);
options.TypeId = minorLabelType.Id;
// delete the minor station labels which overlap with the major ones
var labels = AlignmentStationLabel.CreateSet(alignment, view, options);
foreach (var label in labels)
{
foreach (var majorStation in majorStations)
{
if (MathComparisonUtils.IsAlmostEqual(label.Station, majorStation))
{
label.Element.Pinned = false;
document.Delete(label.Element.Id);
break;
}
}
}
t.Commit();
}
if (view.ViewType == ViewType.FloorPlan || view.ViewType == ViewType.CeilingPlan || view.ViewType == ViewType.EngineeringPlan)
{
IList <HorizontalCurveEndpoint> curveEndpoints = alignment.GetDisplayedHorizontalCurveEndpoints();
using (TransactionGroup tg = new TransactionGroup(document, "Create horizontal curvature changes labels"))
{
tg.Start();
double previousStation = alignment.DisplayedStartStation;
foreach (var curveEndpoint in curveEndpoints)
{
using (Transaction t = new Transaction(document, "Create one horizontal curvature change label"))
{
double thisStation = curveEndpoint.Station;
// skip placing curvature labels at the start and end points of the alignment
if (MathComparisonUtils.IsAlmostEqual((alignment.DisplayedStartStation), thisStation) ||
MathComparisonUtils.IsAlmostEqual((alignment.DisplayedEndStation), thisStation))
{
continue;
}
t.Start();
AlignmentStationLabelOptions options = new AlignmentStationLabelOptions(thisStation);
options.HasLeader = false;
options.TypeId = curvatureLabelType.Id;
AlignmentStationLabel label = AlignmentStationLabel.Create(alignment, view, options);
// regeneration is necessary before the label's positional properties (such as Origin)L can be properly evaluated
document.Regenerate();
// set the shoulder and end to coincide, creating a leader pointing along the view's up direction
SpotDimension dim = label.Element as SpotDimension;
XYZ leaderDirection = view.UpDirection;
// compute the distance to the previous label
// if the previous label is too close, flip the placement direction
{
var dimBBox = dim.get_BoundingBox(view);
double dimOffset = Math.Abs(dimBBox.Max.X - dimBBox.Min.X);
if (MathComparisonUtils.IsGreaterThanOrAlmostEqual(dimOffset, thisStation - previousStation))
{
leaderDirection = leaderDirection.Negate();
}
}
dim.HasLeader = true;
dim.LeaderHasShoulder = true;
dim.LeaderShoulderPosition = dim.Origin +
leaderDirection * UnitUtils.ConvertToInternalUnits(labelTextOffset, UnitTypeId.StationingMeters) * view.Scale;
dim.LeaderEndPosition = dim.LeaderShoulderPosition;
dim.TextPosition = dim.LeaderShoulderPosition;
previousStation = thisStation;
t.Commit();
}
}
tg.Assimilate();
}
}
return(Result.Succeeded);
}
catch (Exception ex)
{
message = ex.Message;
return(Result.Failed);
}
}