JimYuan's Blog

Sharing the things I learned

0%

LineWeight

Posted on Edited on

Here I would like to note the way to customize the self-defined line weight display in Grasshopper.

Regular Tag/ dimension

Some readers might familir with the original tag/dimension components provided in Grasshopper.
A very simple demo picture is like these,

Line Dimension

OriginalTag

Aligned Dimension

OriginalTag
Little difference might be noticed, alignmenet dimension can offset the display lines.

Line Weight + Tag (Csharp customized)

OriginalTag

Tag

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
private void RunScript(List<Point3d> Locations, List<string> Descriptions, string Font, int Size, System.Drawing.Color Color, bool Tag, ref object A)
{
  clear_textdots();

  if(Tag){
    var attr = new Rhino.DocObjects.ObjectAttributes();
    attr.ColorSource = Rhino.DocObjects.ObjectColorSource.ColorFromObject;
    attr.ObjectColor = Color;
    for(int i = 0; i < Locations.Count;i++){
      var tdot = create_textdot(Descriptions[i], Locations[i], Size, Font);
      Rhino.RhinoDoc.ActiveDoc.Objects.AddTextDot(tdot, attr);
    }
  }
  else{
    clear_textdots();
  }
}

TextDot create_textdot(string text_str, Point3d point, int height, string font){
  height = -1;
  var textdot = new TextDot(text_str, point);
  if(height > 0)
    textdot.FontHeight = height;
  if(font != null)
    textdot.FontFace = font;
  return textdot;
}

void clear_textdots(){
  var textdots = Rhino.RhinoDoc.ActiveDoc.Objects.FindByObjectType(Rhino.DocObjects.ObjectType.TextDot);
  if(textdots.Length > 0){
    foreach(var tdot in textdots){
      Rhino.RhinoDoc.ActiveDoc.Objects.Delete(tdot, true);
    }
  }
}

Line Weight

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
private void RunScript(List<Polyline> plns, System.Drawing.Color Color, List<Point3d> pts, int width, ref object A)
{
  pln = plns;
  IList<Point3d> ipts = pts;
  _clippingBox = new BoundingBox(ipts);
  _color = Color;
  _width = width;
  //A = _clippingBox;
}

// <Custom additional code> 
List<Polyline> pln;
Color _color;
int _width;
BoundingBox _clippingBox;
public override void BeforeRunScript(){
  _clippingBox = BoundingBox.Empty;
}
public override BoundingBox ClippingBox{
  get{return _clippingBox;}
}
public override void DrawViewportMeshes(IGH_PreviewArgs args) {
  //for (int i = 0 ; i < limit; i++)
  //args.Display.DrawPoint(pts[i], Rhino.Display.PointStyle.Simple, 10, Color.FromArgb(100, 255 - i / 10, 255 - i / 10, 255 - i / 10));
  foreach(Polyline tmppln in pln)
    args.Display.DrawPolyline(tmppln, _color, _width);

}

In the case of override the DataTree(Point3d):

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
private void RunScript(DataTree<Point3d> points, List<System.Drawing.Color> colors, ref object A)
  {

    Bpoints = points;
    Bcolor = colors;
  }

  // <Custom additional code> 
  DataTree<Point3d> Bpoints = new DataTree<Point3d>();
  List<Color> Bcolor = new List<Color>();
  public override BoundingBox ClippingBox{
    get{
      return new BoundingBox(new Point3d(0, 0, 0), new Point3d(10, 10, 10));
    }
  }
  public override void DrawViewportWires(IGH_PreviewArgs args){
    int j = 0;
    for(int i = 0;i < Bpoints.BranchCount;i++){
      args.Display.DrawPoints(Bpoints.Branches[i], Rhino.Display.PointStyle.Circle, 5, Bcolor[j]);
      //args.Display.DrawPoints(,)
      j++;
    }
  }