Move an object in hierarchy

Rage

Hi everyone,

In the script I'm writing I need to delete an object with some children, without deleting the children. So, I have to "move" the children one step up of the hierarchy, before deleting the parent. I went through the documentation but haven't found any method to do that (to move an object in its hierarchy). Any suggestion?

mp5gosu

Hi, you have to write an own routine for that. I was writing this one a while ago:

/**
 * @brief Moves all children of srcObj to tgtObj. Adds Undos.
 * @param srcObj The source object
 * @param tgtObj The target object
 */
inline void g_MoveChildren(BaseObject* srcObj, BaseObject* tgtObj)
{
	if (!srcObj)
		return;

	auto doc = srcObj->GetDocument();
	if (!doc)
		return;

	auto child = srcObj->GetDown();

	while (child)
	{
		const auto temp = child->GetNext();
		doc->AddUndo(UNDOTYPE::CHANGE, child);
		child->Remove();
		child->InsertUnderLast(tgtObj);
		child = temp;
	}
}

For further information about hierarchy manipulation, see https://developers.maxon.net/docs/cpp/2023_2/page_manual_gelistnode.html#page_manual_gelistnode_lists_edit

WickedP

Hi Rage,

you could try CallCommand() with id 1019951 - calling this should delete all selected objects without deleting their children. Might also do what you're after?

WP.

a_block

Hi,

both answers already provide valid solutions. Nice.

@Rage: Please also consider to use the tagging system (see Read Before Posting) and the Question and Answer feature (see Q&A New Functionality). Especially the tags can help, like for example in this case @mp5gosu would probably have provided you with Python code, if the respective tag was set.
Besides setting tags and changing into a question, I have also moved this thread into the Cinema 4D Development category.

And then I want to add a few links to Python docs:
GeListNode
CallCommand()

Cheers,
Andreas