Techniques for manipulating panoramas

1. A computer-implemented method, comprising:

presenting a two-dimensional map containing a specified location on a display with a field of view that is pointed downward toward a street surface;

while presenting the two-dimensional map, receiving user input requesting a three-dimensional panorama view that includes photographic images of the specified location;

determining that the requested three-dimensional panorama view for the specified location is not available;

based on the determination, presenting an animated sequence transitioning from the two-dimensional map to a placeholder panorama view in place of the requested three-dimensional panorama view of the specified location;

upon completion of the animated sequence, presenting an orientation overlay on the placeholder panorama view, where the orientation overlay indicates a direction and an angular extent of a field of view of the placeholder panorama view; and

presenting a perspective view of a street name annotation and a perspective view of a navigation indicator pointing in the direction shown in the orientation overlay.

2. The method of claim 1 , wherein the user input includes selection of a user interface element for invoking the three-dimensional panorama view of the specified location.

3. The method of claim 2 , wherein the animated sequence is presented after completion of the selection of the user interface element for invoking the three-dimensional panorama view of the specified location.

4. The method of claim 1 , wherein

the two-dimensional map and the placeholder panorama view are both displayed in a portrait orientation, and the method further comprises:

upon completion of the animated sequence, receiving a second user input rotating the display to a landscape orientation; and

in response to the second user input, presenting the placeholder panorama view in a landscape orientation.

5. The method of claim 1 , where the display is a touch-sensitive display responsive to a multi-touch gesture.

6. The method of claim 1 , further comprising:

determining that the requested three-dimensional panorama view for the specified location is available; and

based on the determination that the requested three-dimensional panorama view for the specified location is available, transitioning from the two-dimensional map to the requested three-dimensional panorama view including zooming into the specified location on the two-dimensional map, transitioning from the zoomed two-dimensional map to the three-dimensional panorama view with a field of view showing the street surface at the specified location, and spinning the three-dimensional panorama view such that the three-dimensional panorama view tilts up from the street surface to a horizon at the specified location.

7. A non-transitory computer-readable storage medium having instructions stored thereon, which, when executed by at least one processor, cause the processor to perform operations comprising:

presenting a two-dimensional map containing a specified location on a display with a field of view that is pointed downward toward a street surface;

while presenting the two-dimensional map, receiving user input requesting a three-dimensional panorama view that includes photographic images of the specified location;

determining that the requested three-dimensional panorama view for the specified location is not available;

based on the determination, presenting an animated sequence transitioning from the two-dimensional map to a placeholder panorama view in place of the requested three-dimensional panorama view of the specified location;

upon completion of the animated sequence, presenting an orientation overlay on the placeholder panorama view, where the orientation overlay indicates a direction and an angular extent of a field of view of the placeholder panorama view; and

presenting a perspective view of a street name annotation and a perspective view of a navigation indicator pointing in the direction shown in the orientation overlay.

8. The non-transitory computer readable storage medium of claim 7 , wherein the user input includes selection of a user interface element for invoking the three-dimensional panorama view of the specified location.

9. The non-transitory computer readable storage medium of claim 8 , wherein the animated sequence is presented after completion of the selection of the user interface element for invoking the three-dimensional panorama view of the specified location.

10. A system comprising:

one or more processors;

memory coupled to the one or more processors and operable for storing instructions, which, when executed by the one or more processors, causes the one or more processors to perform operations comprising:

presenting a two-dimensional map containing a specified location on a display with a field of view that is pointed downward toward a street surface;

while presenting the two-dimensional map, receiving user input requesting a three-dimensional panorama view that includes photographic images of the specified location;

determining that the requested three-dimensional panorama view for the specified location is not available;

based on the determination, presenting an animated sequence transitioning from the two-dimensional map to a placeholder panorama view in place of the requested three-dimensional panorama view of the specified location;

upon completion of the animated sequence, presenting an orientation overlay on the placeholder panorama view, where the orientation overlay indicates a direction and an angular extent of a field of view of the placeholder panorama view; and

presenting a perspective view of a street name annotation and a perspective view of a navigation indicator pointing in the direction shown in the orientation overlay.

11. The system of claim 10 , wherein the user input includes selection of a user interface element for invoking the three-dimensional panorama view of the specified location, and the animated sequence is presented after completion of the selection of the user interface element for invoking the three-dimensional panorama view of the specified location.