Grasshopper component flatten input

Hi,

I have input in the component of as guid.

IGH_Param geometryAsGuid = new Grasshopper.Kernel.Parameters.Param_Guid();
pManager.AddParameter(geometryAsGuid, "Guid", "Guid", "Guid", GH_ParamAccess.list);

I would like to flatten all inputs. For now I am doing it like this:

pManager[0].DataMapping = GH_DataMapping.Flatten;

Is there other way to get all inputs?

Replies to This Discussion

Permalink Reply by John on May 28, 2017 at 6:31am

Yess...

The issue was that

I did declare default parameter:

pManager.AddNumberParameter("RotationMin", "RotationMin", "Rotation domain start value", GH_ParamAccess.item, 25);

Without 25 it works:) Thank you.

Is it possible to attach other kind of components such as plane, guid boolean toggles and ect?

If the slider is detached, how can I still have default value?

And the correct way of looping is this?

public override void AddedToDocument(GH_Document document)
{
base.AddedToDocument(document);

for (int i = 0; i < 2; i++)
{
Param_Number numberInput = Params.Input[i+2] as Param_Number;
if (numberInput == null) return;
if (numberInput.SourceCount > 0) return;
if (numberInput.PersistentDataCount > 0) return;
Attributes.PerformLayout();
int x = (int)numberInput.Attributes.Pivot.X - 250;
int y = (int)numberInput.Attributes.Pivot.Y - 10;
GH_NumberSlider slider = new GH_NumberSlider();
slider.SetInitCode("0.00<180.00<180.00");
slider.CreateAttributes();
slider.Attributes.Pivot = new PointF(x, y);
slider.Attributes.ExpireLayout();
document.AddObject(slider, false);
numberInput.AddSource(slider);
}
}

Permalink Reply by David Rutten on May 28, 2017 at 6:35am

You can attach whatever you like. As long as the component is defined inside an assembly you reference, or if you know the ComponentID of it so you can ask Grasshopper to make one for you.

Permalink Reply by John on May 28, 2017 at 7:20am

What I am doing wrong when adding guid parameter:

Param_Guid gInput = Params.Input[0] as Param_Guid;
if (gInput == null) return;
if (gInput.SourceCount > 0) return;
if (gInput.PersistentDataCount > 0) return;
Attributes.PerformLayout();
int xG = (int)gInput.Attributes.Pivot.X - 250;
int yG = (int)gInput.Attributes.Pivot.Y - 10;
IGH_Param guid = new Grasshopper.Kernel.Parameters.Param_Guid();

guid.CreateAttributes();
guid.Attributes.Pivot = new PointF(xG,yG);
guid.Attributes.ExpireLayout();

document.AddObject(guid, false);
gInput.AddSource(gInput);

Permalink Reply by David Rutten on May 28, 2017 at 7:34am

gInput.AddSource(gInput);

You cannot add a source to a parameter that is the same parameter.

Should be:

gInput.AddSource(guid);

Permalink Reply by John on May 29, 2017 at 4:01am

Hi,

When defining this custom parameter, is there any chance I can add default value, if input is deleted/disconnected from main component.

Now I have this:

Param_Number numberInput = Params.Input[i + 2] as Param_Number;

if (numberInput == null) return;
if (numberInput.SourceCount > 0) return;
if (numberInput.PersistentDataCount > 0) return;
Attributes.PerformLayout();
int x = (int)numberInput.Attributes.Pivot.X - 250;
int y = (int)numberInput.Attributes.Pivot.Y - 10;

GH_NumberSlider slider = new GH_NumberSlider();
slider.SetInitCode("0.0<" + values[i] + "<" + endValues[i]);

slider.CreateAttributes();
slider.Attributes.Pivot = new PointF(x, y);
slider.Attributes.ExpireLayout();

document.AddObject(slider, false);
numberInput.AddSource(slider);

But what I want to add is this number in bold as default value:

pManager.AddNumberParameter("ScaleXMax", "X2", "ScaleX domain end value", GH_ParamAccess.item, 10.9458526526262626886);