I was wondering how I can preview the position of the elevation and the value of the elevation when I create custom elevation symbols in succession (I used the method leader.create to create the custom elevation symbols), I tried to use the method in displaypipeline, but I can only find DrawInstanceDefinition, using this method does not Doesn’t show the elevation perfectly (it only shows the instance definition, no value)Is there a similar method for drawleader that allows me to preview the leader graphic I’m creating?
This is my code
protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
leftDefinition = doc.InstanceDefinitions.Find("LeftElevationSymbol");
if (leftDefinition == null)
{
var line1 = new LineCurve(new Point3d(-1, -1, 0), new Point3d(0, 0, 0));
var line2 = new LineCurve(new Point3d(0, 0, 0), new Point3d(-2, 0, 0));
var line3 = new LineCurve(new Point3d(-2, 0, 0), new Point3d(-1, -1, 0));
var line4 = new LineCurve(new Point3d(-1, -1, 0), new Point3d(4, -1, 0));
var geolist = new List<GeometryBase>()
{
line1, line2, line3, line4
};
var leftindex = doc.InstanceDefinitions.Add("LeftElevationSymbol", "", new Point3d(0, 0, 0), geolist);
leftid = doc.InstanceDefinitions[leftindex].Id;
leftDefinition = doc.InstanceDefinitions[leftindex];
}
else
{
leftid = leftDefinition.Id;
}
dimstyle = doc.DimStyles.FindName("Dim01");
int dimstyleindex;
if(dimstyle == null )
{
dimstyle = new DimensionStyle();
dimstyle.Name = "Dim01";
dimstyle.LeaderArrowBlockId = leftid;
dimstyle.LeaderArrowType = DimensionStyle.ArrowType.UserBlock;
dimstyle.ArrowType1 = DimensionStyle.ArrowType.UserBlock;
dimstyle.ArrowType2 = DimensionStyle.ArrowType.UserBlock;
dimstyle.TextUnderlined = true;
dimstyle.DimTextLocation = DimensionStyle.TextLocation.InDimLine;
dimstyle.LeaderArrowLength = 50;
dimstyle.ArrowBlockId1 = leftid;
dimstyle.ArrowBlockId2 = leftid;
dimstyle.TextHeight = 50;
dimstyle.LeaderTextVerticalAlignment = TextVerticalAlignment.BottomOfBoundingBox;
dimstyleindex = doc.DimStyles.Add(dimstyle, false);
dimstyle = doc.DimStyles[dimstyleindex];
}
else
{
dimstyleindex = dimstyle.Index;
}
Point3d starpt;
var rc= RhinoGet.GetPoint("start of line",false,out starpt);
if (rc != Result.Success)
{
return rc;
}
Point3d midpt = new Point3d(starpt.X, starpt.Y + dimstyle.LeaderArrowLength, 0);
GetPoint pt2 = new GetPoint();
pt2.SetBasePoint(midpt, true);
pt2.SetCommandPrompt("end of line");
pt2.DrawLineFromPoint(midpt, true);
ModelAidSettings.Ortho = true;
pt2.DynamicDraw += new EventHandler<GetPointDrawEventArgs>(gp_DynamicDraw);
pt2.Get();
if(pt2.CommandResult()!= Result.Success)
{
return pt2.CommandResult();
}
Point3d endpt = pt2.Point();
Point3d[] pts = { midpt, endpt };
doc.DimStyles.SetCurrent(dimstyleindex, true);
myleader = Leader.Create("±0.000", Plane.WorldXY, dimstyle, pts);
doc.Objects.AddLeader(myleader);
for(; ; )
{
GetPoint pt = new GetPoint();
pt.SetBasePoint(midpt, true);
pt.SetCommandPrompt("end of line");
pt.DrawLineFromPoint(midpt, true);
ModelAidSettings.Ortho = true;
pt.DynamicDraw += new EventHandler<GetPointDrawEventArgs>(gp_DynamicDraw);
pt.Get();
if (pt.CommandResult() != Result.Success)
{
return pt.CommandResult();
}
Point3d endpoint = new Point3d(endpt.X,pt.Point().Y,0);
Point3d middlepoint = new Point3d(midpt.X, pt.Point().Y , 0);
Point3d[] ptlist = { middlepoint, endpoint };
myleader = Leader.Create((pt.Point().Y-starpt.Z).ToString(), Plane.WorldXY, dimstyle, ptlist);
doc.Objects.AddLeader(myleader);
}
doc.Views.Redraw();
ModelAidSettings.Ortho = false;
return Result.Success;
}
void gp_DynamicDraw(object sender, GetPointDrawEventArgs e)
{
Point3d basePt;
if (e.Source.TryGetBasePoint(out basePt))
{
// Format distance as string
double distance = basePt.DistanceTo(e.CurrentPoint);
string text = string.Format("{0:0.000}", distance);
// Get world-to-screen coordinate transformation
Transform xform = e.Viewport.GetTransform(Rhino.DocObjects.CoordinateSystem.World, Rhino.DocObjects.CoordinateSystem.Screen);
Point3d screenPt = xform * e.CurrentPoint;
screenPt.X += 20.0;
screenPt.Y -= 20.0;
e.Display.Draw2dText(text, Color.Black, new Point2d(screenPt.X, screenPt.Y), false, (int)dimstyle.TextHeight, dimstyle.Font.FaceName);
var scale = Transform.Scale(new Point3d(0, 0, 0), dimstyle.LeaderArrowLength);
var translation = Transform.Translation(basePt - new Point3d(0, 0, 0));
e.Display.DrawInstanceDefinition(leftDefinition,translation*scale);
}
}
