I all,
has somone a small example to preview a text3d object in a compiled grasshopper component.
Hi -
I’m not sure what that means…
-wim
David Rutten posted a example to implement a Text3d in grasshopper like this.
public sealed class TextGoo : GH_GeometricGoo<Rhino.Display.Text3d>, IGH_BakeAwareData, IGH_PreviewData
{
#region constructors
public TextGoo()
: this(new Rhino.Display.Text3d("Existence is pain", Plane.WorldXY, 10))
{ }
public TextGoo(Rhino.Display.Text3d text)
{
m_value = text;
}
private static Rhino.Display.Text3d DuplicateText3d(Rhino.Display.Text3d original)
{
if (original == null) return null;
var text = new Rhino.Display.Text3d(original.Text, original.TextPlane, original.Height)
{
Bold = original.Bold,
Italic = original.Italic,
FontFace = original.FontFace
};
return text;
}
public override IGH_GeometricGoo DuplicateGeometry()
{
return new TextGoo(DuplicateText3d(m_value));
}
#endregion
#region properties
public override string TypeName
{
get { return "3D Text"; }
}
public override string TypeDescription
{
get { return "3D Text"; }
}
public override string ToString()
{
if (m_value == null)
return "<null>";
return m_value.Text;
}
public override BoundingBox Boundingbox
{
get
{
if (m_value == null)
return BoundingBox.Empty;
return m_value.BoundingBox;
}
}
public override BoundingBox GetBoundingBox(Transform xform)
{
if (m_value == null)
return BoundingBox.Empty;
BoundingBox box = m_value.BoundingBox;
Point3d[] corners = xform.TransformList(box.GetCorners());
return new BoundingBox(corners);
}
#endregion
#region methods
public override IGH_GeometricGoo Transform(Transform xform)
{
var text = DuplicateText3d(m_value);
if (text == null)
return new TextGoo(null);
Plane plane = text.TextPlane;
Point3d point = plane.PointAt(1, 1);
plane.Transform(xform);
point.Transform(xform);
double dd = point.DistanceTo(plane.Origin);
text.TextPlane = plane;
text.Height *= dd / Math.Sqrt(2);
return new TextGoo(text);
}
public override IGH_GeometricGoo Morph(SpaceMorph xmorph)
{
return DuplicateGeometry();
}
#endregion
#region preview
BoundingBox IGH_PreviewData.ClippingBox
{
get { return Boundingbox; }
}
void IGH_PreviewData.DrawViewportWires(GH_PreviewWireArgs args)
{
if (m_value == null)
return;
args.Pipeline.Draw3dText(m_value, args.Color);
}
void IGH_PreviewData.DrawViewportMeshes(GH_PreviewMeshArgs args)
{
// Do not draw in meshing layer.
}
#endregion
#region baking
bool IGH_BakeAwareData.BakeGeometry(RhinoDoc doc, ObjectAttributes att, out Guid id)
{
id = Guid.Empty;
if (m_value == null)
return false;
if (att == null)
att = doc.CreateDefaultAttributes();
id = doc.Objects.AddText(m_value, att);
return true;
}
#endregion
}
I tried this objects to preview the Text3d and its works as expected.
In the example code is a section for #preview
void IGH_PreviewData.DrawViewportWires(GH_PreviewWireArgs args)
{
if (m_value == null)
return;
args.Pipeline.Draw3dText(m_value, args.Color);
}
void IGH_PreviewData.DrawViewportMeshes(GH_PreviewMeshArgs args)
{
// Do not draw in meshing layer.
}
#endregion
Now i want to change the color (args.Color) by input of the node in grasshopper so i thought i could change the constructor and add a Color which can be used instead of args.Color.
At the moment the SolveInstance it look like this.
And this is the result in grasshopper.
So the question is.
Is there a way to add color to the TextGoo constructor or another option to change the color by a Input of the compiled component.
Thanks for Tips.