LIGHTING OF GRAPHICAL OBJECTS BASED ON ENVIRONMENTAL CONDITIONS

摘要

To provide digital maps on a portable device, a graphical representation of an object is displayed for display on a digital map, current orientation of the portable device relative to the sun is determined, and orientation of the graphical representation of the object relative to a virtual sun is determined based on the determined current orientation of the portable device relative to the sun. Using the virtual sun as a light source, a shadow cast by the graphical representation is generated for display on the digital map.

主权项

1. A method for providing realistic digital maps on portable devices, the method comprising:
generating, by one or more processors, a graphical representation of an object for display on a portable device, the graphical representation being lit by a virtual sun; determining, by the one or more processors, a current orientation of the portable device relative to the real-world sun; aligning, by the one or more processors in real-time, the virtual sun with the real-world sun using the determined current orientation; and generating, by the one or more processors, a shadow cast by the graphical representation based on a current orientation of the graphical representation relative to the virtual sun, whereby the graphical representation appears to obstruct light from the real-world sun.