Abstract: A method of manipulating a three-dimensional virtual building block model by means of two-dimensional cursor movements, the virtual building block model including a plurality of virtual building blocks each including a number of connection elements for connecting the virtual building block with another virtual building block according to a set of connection rules, the method comprising positioning by means of cursor movements in a computer display area representing a two-dimensional projection of said model, a two-dimensional projection of a first virtual building block to be connected to the structure, resulting in a two-dimensional position; determining, from the two-dimensional position, a number of three-dimensional candidate positions of the first virtual building block in the three-dimensional coordinate system; selecting one of said candidate positions based on the connection rules and a predetermined set of position rating rules; and connecting the first building block to said structure at the selecte

Abstract: A method of constructing a virtual construction model, comprising: displaying a plurality of construction elements corresponding to respective types of construction elements, allowing a user to select one or more instances of each of the types of construction elements; maintaining a counter of available elements for each type of construction elements; decrementing said counter of available elements of a type of construction elements each time a user selects a construction element of said type; providing an indication to the user when the available number of construction elements of one of the types of construction elements has been used in the virtual construction model.

Abstract: An exemplary embodiment is a method for generating a virtual brick model. The virtual brick models are generated by users and uploaded to a centralized host system. Users can build virtual models themselves or download and edit another user's virtual brick models while retaining the identity of the original virtual brick model. Routines are provided for both storing user created building steps in and generating automated building instructions for virtual brick models, generating a bill of materials for a virtual brick model and ordering physical bricks corresponding to a virtual brick model.

Abstract: A method of manipulating a three-dimensional virtual building block model by means of two-dimensional cursor movements, the virtual building block model including a plurality of virtual building blocks each including a number of connection elements for connecting the virtual building block with another virtual building block according to a set of connection rules, the method comprising positioning by means of cursor movements in a computer display area representing a two-dimensional projection of said model, a two-dimensional projection of a first virtual building block to be connected to the structure, resulting in a two-dimensional position; determining, from the two-dimensional position, a number of three-dimensional candidate positions of the first virtual building block in the three-dimensional coordinate system; selecting one of said candidate positions based on the connection rules and a predetermined set of position rating rules; and connecting the first building block to said structure at the selecte

Abstract: A method of selecting a virtual toy construction model, the method comprising: receiving by a host computer system a digital representation of an input toy construction model, the input toy construction model including a plurality of construction elements; generating a bill-of-materials that includes at least all construction elements of the received input construction model; performing a search in a repository of respective digital representations of a plurality of virtual toy construction models for one or more construction models that can be constructed from the set of construction elements included in the bill of materials; presenting on a client computer system at least one of the construction models identified in the search.

Abstract: An exemplary embodiment is a method for generating a virtual brick model. The virtual brick models are generated by users and uploaded to a centralized host system. Users can build virtual models themselves or download and edit another user's virtual brick models while retaining the identity of the original virtual brick model. Routines are provided for both storing user created building steps in and generating automated building instructions for virtual brick models, generating a bill of materials for a virtual brick model and ordering physical bricks corresponding to a virtual brick model.