public bool AllowElement(Element element)
{
// Element must have at least one usable solid
IList <Solid> solids = FreeFormElementUtils.GetTargetSolids(element);
return(solids.Count > 0);
}
public Result Execute(ExternalCommandData commandData, ref string message, Autodesk.Revit.DB.ElementSet elements)
{
UIDocument uiDoc = commandData.Application.ActiveUIDocument;
Document doc = uiDoc.Document;
// Select target element
Reference target = uiDoc.Selection.PickObject(ObjectType.Element,
new TargetElementSelectionFilter(),
"Select target");
Element targetElement = doc.GetElement(target);
// Get height for block based on target element.
BoundingBoxXYZ bbox = targetElement.get_BoundingBox(null);
double height = bbox.Max.Z - bbox.Min.Z + 1;
// Select boundaries
IList <Reference> boundaries = uiDoc.Selection.PickObjects(ObjectType.Element,
new BoundarySelectionFilter(),
"Select boundary");
String familyPath = FreeFormElementUtils.FindGenericModelTemplate(doc.Application.FamilyTemplatePath);
if (String.IsNullOrEmpty(familyPath))
{
message = "Unable to find a template named 'GenericModel.rft' in family template path.";
return(Result.Failed);
}
FreeFormElementUtils.FailureCondition condition = FreeFormElementUtils.CreateNegativeBlock(targetElement, boundaries, UIDocument.GetRevitUIFamilyLoadOptions(), familyPath);
// Show error message for failure condition
if (condition != FreeFormElementUtils.FailureCondition.Success)
{
switch (condition)
{
case FreeFormElementUtils.FailureCondition.CurvesNotContigous:
message = "Could not create the block as the boundary curves do not make a contiguous closed boundary.";
break;
case FreeFormElementUtils.FailureCondition.CurveLoopAboveTarget:
message = "Could not create the block as the boundary curves lie above their target element.";
break;
case FreeFormElementUtils.FailureCondition.NoIntersection:
message = "Could not create the block as the curves and the target element does not intersect.";
break;
}
return(Result.Failed);
}
return(Result.Succeeded);
}
public bool AllowElement(Element element)
{
// Allow only curve elements
CurveElement curveElement = element as CurveElement;
if (curveElement == null)
{
return(false);
}
Curve curve = curveElement.GeometryCurve;
// Curves must support the utilities used by the tool (e.g. ReverseCurve)
if (!FreeFormElementUtils.SupportsLoopUtilities(curve))
{
return(false);
}
// Curves must be in XY plane
return(FreeFormElementUtils.IsCurveInXYPlane(curve));
}