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Objects of a certain type can be removed from the array:

• AtomArray::FilterObject() : Removes object pointers based on the given parameters. See C4DAtom 类型 .
• AtomArray::FilterObjectChildren() : Removes all objects that have a parent (or ancestor) in the array.

// get selection doc-> GetActiveObjects (selection, GETACTIVEOBJECTFLAGS::NONE ); selection-> FilterObject ( NOTOK , Opoint ); const Int32 objCount = selection-> GetCount (); ApplicationOutput ( "Number of selected point objects: " + String::IntToString (objCount));

Two AtomArray objects can be compared:

• AtomArray::Compare() : Returns true if the arrays are identical.

Drag and Drop

AtomArray objects are also often used to define arguments of drag and drop operations.

• AtomArray::GetUserID() : Returns the user ID.
• AtomArray::SetUserID() : Sets the user ID.
• AtomArray::GetUserData() : Returns a pointer the user data.
• AtomArray::SetUserData() : Sets the pointer to the user data.
• AtomArray::GetPreferred() : Returns the preferred element.
• AtomArray::SetPreferred() : Sets the preferred element.

// get drag object GetDragObject(msg, &type, & object );

// the object is an AtomArray if (type == DRAGTYPE_ATOMARRAY && object ) { AtomArray * const dragObjects = static_cast< AtomArray * > (object);

// end of drag if (msg. GetInt32 ( BFM_DRAG_FINISHED )) { ApplicationOutput ( ".........." _s);

// check UserID // NOTE: replace ID_OBJECTMANAGER with 100004709 define with real value to get rid of '#include "../../../../resource/modules/newman/c4d_symbols.h"' if (dragObjects-> GetUserID () == 100004709) ApplicationOutput ( "Drag from the Object Manager" _s);

// loop through all dragged objects for ( Int32 i = 0; i < dragObjects-> GetCount (); ++i) { C4DAtom * draggedAtom = dragObjects-> GetIndex (i);

// PrintName() is a custom function PrintName(draggedAtom); }

// get preferred element C4DAtom * preferredAtom = dragObjects-> GetPreferred ();

// PrintName() is a custom function PrintName(preferredAtom); } else { return SetDragDestination( MOUSE_COPY ); } } return false ; break ; }

拷贝

AtomArray objects can be copied with:

• AtomArray::CopyTo() : Copies the array into the given AtomArray .
• AtomArray::CopyToFilter() : Copies the array into the given AtomArray while applying the filter arguments.

// get selection doc-> GetActiveObjects (selection, GETACTIVEOBJECTFLAGS::NONE ); AutoAlloc<AtomArray> pointObjects; if (pointObjects == nullptr ) return maxon::OutOfMemoryError( MAXON_SOURCE_LOCATION );

// copy the references of all point object into the given AtomArray if (selection-> CopyToFilter (pointObjects, NOTOK , Opoint )) { const Int32 objCount = pointObjects-> GetCount (); ApplicationOutput ( "Number of selected point objects: " + String::IntToString (objCount)); }

延伸阅读

• C4DAtom Manual