Thanks for the response, that seems to have solved the issue.

John Terenece

Inside of CheckDirty.

John Terenece

Thanks for the response.

I tried using fieldList->GetDirty(doc) with a time layer inside my fieldlist and the timeline active.

GetDirty(doc) doesn't seem to catch the time layer as dirty or a layer like the Linear Field when I make changes to it. The only time it seems to catch the fieldlist as dirty is when I change the number of layers by inserting new ones or removing old ones.

Is there a specific flag that needs to be set on the fieldlist when its created in order for GetDirty to function properly?

John Terenece

Thanks for the response.

I know about using C4D_Falloff structure and that was my initial way of adding a Falloff.

For my plugin I want to include other controls for a user that are placed alongside a Fieldlist like this if possible.

Is there a way to still achieve those same kind of results without needing to utilize AddFalloffToDescription or is that the only way to catch if items in the Fieldlist are dirty?

John Terenece

Hello.

I am working on a plugin that utilizes a custom FieldList I create with the code below.

    cid = DescLevel(idField, CUSTOMDATATYPE_FIELDLIST, 0);
    if (!singleid || cid.IsPartOf(*singleid, NULL))
    {
        BaseContainer bc;
        bc = GetCustomDataTypeDefault(CUSTOMDATATYPE_FIELDLIST);
        bc.SetBool(DESC_FIELDLIST_NOCOLOR, TRUE);
        bc.SetBool(DESC_FIELDLIST_NODIRECTION, TRUE);
        bc.SetBool(DESC_FIELDLIST_NOROTATION, TRUE);
        
        bc.SetString(DESC_NAME, "Field"_s);
        bc.SetBool(DESC_ANIMATE, true);
        if (!description->SetParameter(cid, bc, fieldgroup))
            return TRUE;
        
    }

My issue comes in when I try to catch when one of the objects inside of the FieldList is dirty.

The code below is how I am checking the layers in the FieldList. This code is working properly on things like the Linear Field but on layers like the Time Field Layer it doesn't catch when they are dirty.

GeData data;
	UInt32 falloffDirtySum = 0;
	const DescID fieldParameterID(idFieldList);
	if (op->GetParameter(fieldParameterID, data, DESCFLAGS_GET::NONE))
	{
		CustomDataType* const customData = data.GetCustomDataType(CUSTOMDATATYPE_FIELDLIST);
		FieldList* const  fieldList = static_cast<FieldList*>(customData);
		UInt32 falloffDirtySum = 0;
		if (fieldList)
		{
			GeListHead *listHead = fieldList->GetLayersRoot();
			if (listHead)
			{
				Int32 fieldIndex = 0;
				Int32 fieldListCount = fieldList->GetCount();

				FieldLayer *layer = static_cast<FieldLayer*>(listHead->GetFirst());
				while (layer && fieldIndex < fieldListCount)
				{
					const FieldLayerLink layerLink = layer->GetLinkedObject(doc);
					BaseObject *fieldObject = static_cast<BaseObject*>(layerLink._object);
					if (fieldObject)
					{
						falloffDirtySum = falloffDirtySum + fieldObject->GetDirty(DIRTYFLAGS::CACHE | DIRTYFLAGS::DATA | DIRTYFLAGS::MATRIX);
					}
					layer = layer->GetNext();
					fieldIndex++;
				}

			}
		}
		if (falloffDirtySum != prevFalloffDirtySum)
		{
                        // Mark object as dirty
			prevFalloffDirtySum = falloffDirtySum;
		}
	}

Running my own tests I know that this code isn't working on these layers because they don't have a linked object to retrieve with GetLinkedObject() to give me something to use GetDirty() on. Using GetDirty() on the FieldLayers that don't have a linked object doesn't work either.

Is there an alternative way to check dirtiness on FieldLayers that don't have a linked object?

I've tried looking through the SDK and on the forums and none of the solutions in the posts I looked at that dealt with a similar topic worked for me.

Any help would be greatly appreciated.

John Terenece

Thanks for the response Manuel, I got it working.

John Terenece

@fritz
Thank you for the response Fritz.

I tried swapping my code from using SampleListSimple to SampleList and I am still getting the same results as before. My code for sampling now looks like this.

FieldInput points(positions.GetFirst(), directions.GetFirst(), uvws.GetFirst(), pointIndex, Matrix());
            

const FieldInfo info = FieldInfo::Create(op, points, FIELDSAMPLE_FLAG::VALUE) iferr_return;


FieldOutput results;
results.Resize(vectorArray.GetCount(), FIELDSAMPLE_FLAG::VALUE) iferr_return;

fieldList->SampleList(info, points, results);

John Terenece

Hello,

I am working on a plugin that utilize Fields to affect the position of points in a spline. With the code listed below that I took from the FieldList Manual I am able to retrieve the falloff value from the positions I feed into the Fields.

However, the returned value does no give the effects of the Delay/Smooth/Spring/Decay Modifiers within the Field. How can I get the modified value?

Here is a video for clarity of what SHOULD be happening .

				GeData data;
				Matrix opMat = op->GetMg();
				const DescID fieldParameterID(idFieldList);
				if (!op->GetParameter(fieldParameterID, data, DESCFLAGS_GET::NONE))
					return returnArray;


				CustomDataType* const customData = data.GetCustomDataType(CUSTOMDATATYPE_FIELDLIST);
				FieldList* const  fieldList = static_cast<FieldList*>(customData);
				if (!fieldList)
					return returnArray;
				Int32 fieldListCount = 0;
				if (fieldList)
					fieldListCount = fieldList->GetCount();

				if (fieldListCount > 0)
				{
					maxon::BaseArray<maxon::Vector> positions;
					maxon::BaseArray<maxon::Vector> uvws;
					maxon::BaseArray<maxon::Vector> directions;
					resultVoid = positions.Resize(vectorArray.GetCount());
					resultVoid = uvws.Resize(vectorArray.GetCount());
					resultVoid = directions.Resize(vectorArray.GetCount());

					

					Int32 pointIndex = 0;
					for (maxon::Vector& pos : positions)
					{
						pos = opMat * vectorArray[pointIndex];
						pointIndex++;
					}

					FieldInput points(positions.GetFirst(), directions.GetFirst(), uvws.GetFirst(), pointIndex, Matrix());
					FieldOutput results = fieldList->SampleListSimple(*op, points) iferr_return;
					Bool valid = FALSE;
						
					for (Int32 index = 0; index < positions.GetCount(); index++)
					{
							// Retreive falloff value to use
							results._value[index];
					}

					
					
				}

Any help would be greatly appreciated.

John Terenece