| 摘要 |
A map rendering device includes: a texture creation unit 4 for creating a texture; a 3-D topographic relief polygon creation unit 8 for creating a 3-D topographic relief polygon; and a rendering unit 11 for performing 3-D map relief rendering by mapping the texture to the 3-D topographic relief polygon; and the texture creation unit includes: a texture generation unit 5 for generating only one texture for a rendering area; a coordinate transformation unit 6 for transforming map data that are vector data represented in a map coordinate system into the data in a pixel coordinate system of the texture; and a texture rendering unit 7 for creating the texture to be mapped to the 3-D topographic relief polygon by performing 2-D rendering of the map data transformed into the pixel coordinate system.
|
