Dynamic layering user interface

1. A computer-implemented method, the method comprising:

generating a user interface display environment having multiple layers, each layer containing at least one user interface element associated with the layer;

generating a viewport having a port that provides a visible view onto the multiple layers of the display environment, each of the multiple layers having an offset relative to the viewport;

associating a node graph with each of the multiple layers, the node graph defining for each of the multiple layers:

the offset relative to the viewport at nodes of the node graph, and

a function to determine intermediate steps for display features of each layer between the nodes of the node graph; and

moving, between a transition from a first visible view through the viewport to a second visible view through the viewport, the multiple layers relative to the viewport to provide a visible view onto different portions of the multiple layers of the display environment, wherein the movement of at least two different layers of the multiple layers is varied independently of each other with respect to a rate of movement and a direction of movement.

2. The method of claim 1 , wherein the viewport includes a frame surrounding at least a portion of a periphery of the viewport.

3. The method of claim 2 , wherein the frame of the viewport provides an anchor for at least one user interface element.

4. The method of claim 1 , wherein at least one of the multiple layers is contained in another one of the multiple layers.

5. The method of claim 1 , wherein, for any one of the multiple layers, the function to determine intermediate steps for display features of each layer between nodes of the node graph is independent of another of the multiple layers.

6. The method of claim 1 , wherein one of the multiple layers is always visible through the port of the viewport.

7. A non-transitory medium having processor-executable instructions stored thereon, the medium comprising:

instructions to generate a user interface display environment having multiple layers, each layer containing at least one user interface element associated with the layer;

instructions to generate a viewport having a port that provides a visible view therethrough onto the multiple layers of the display environment, each of the multiple layers having an offset relative to the viewport;

instructions to associate a node graph with each of the multiple layers, the node graph defining for each of the multiple layers:

the offset relative to the viewport at the nodes of node graph, and

a function to determine intermediate steps for display features of each layer between the nodes of the node graph; and

instructions to move, between a transition from a first visible view through the viewport to a second visible view through the viewport, the multiple layers relative to the viewport to provide a visible view onto different portions of the multiple layers of the display environment, wherein the movement of at least two different layers of the multiple layers is varied independently of each other with respect to a rate of movement and a direction of movement.

8. The medium of claim 7 , wherein the viewport includes a frame surrounding at least a portion of a periphery of the viewport.

9. The medium of claim 8 , wherein the frame of the viewport provides an anchor for at least one user interface element.

10. The medium of claim 7 , wherein at least one of the multiple layers is contained in another one of the multiple layers.

11. The medium of claim 7 , wherein, for any one of the multiple layers, the function to determine intermediate steps for display features of each layer between nodes of the node graph is independent of another of the multiple layers.

12. The medium of claim 7 , wherein one of the multiple layers is always visible through the port of the viewport.

13. A system comprising:

a memory having processor-executable instructions stored thereon; and

a processor to execute the processor-executable instructions to cause the system to:

generate a user interface display environment having multiple layers, each layer containing at least one user interface element associated with the layer;

generate a viewport having a port that provides a visible view therethrough onto the multiple layers of the display environment, each of the multiple layers having an offset relative to the viewport;

associating a node graph with each of the multiple layers, the node graph defining for each of the multiple layers:

the offset relative to the viewport at the nodes of node graph, and

a function to determine intermediate steps for display features of each layer between the nodes of the node graph; and

move, between a transition from a first visible view through the viewport to a second visible view through the viewport, the multiple layers relative to the viewport to provide a visible view onto different portions of the multiple layers of the display environment, wherein the movement of at least two different layers of the multiple layers is varied independently of each other with respect to a rate of movement and a direction of movement.

14. The system of claim 13 , wherein the viewport includes a frame surrounding at least a portion of a periphery of the viewport.

15. The system of claim 14 , wherein the frame of the viewport provides an anchor for at least one user interface element.

16. The system of claim 13 , wherein at least one of the multiple layers is contained in another one of the multiple layers.

17. The system of claim 13 , wherein, for any one of the multiple layers, the function to determine intermediate steps for display features of each layer between nodes of the node graph is independent of another of the multiple layers.

18. The system of claim 13 , wherein one of the multiple layers is always visible through the port of the viewport.