TCustomForm3D = class(TCommonCustomForm, IContextObject, IViewport3D)
class PASCALIMPLEMENTATION TCustomForm3D : public Fmx::Forms::TCommonCustomForm
TCustomForm3D represents the base class from which you derive 3D forms.
Create a subclass derived from TCustomForm3D if you want to create new 3D forms such as 3D dialog boxes. A derived 3D form can contain one or more FireMonkey 3D objects, such as TText3D, TGrid3D, and so on.