| 摘要 |
The method of global rendering allows a three dimensional scene to be rendered accurately and viewed correctly from multiple angles and directions at once. The method includes the steps of placing an object representing a multidimensional texture map into a database, replacing the object with a bounding geometry that completely encloses the object, sampling the bounding geometry with a sample of interest, extracting pixel information from the sample of the bounding geometry, and displaying the rendered object using the extracted pixel information. The pixel information is extracted by computing a direction from the center of the bounding geometry to the origin of the sample of interest, identifying a vertical plane that contains the center point of the bounding geometry and that is perpendicular to the sample of interest, projecting the sample onto the vertical plane, computing the coordinates of the projected sample in the vertical plane, extracting an image from a multi-dimensional texture wherein the image faces the computed direction, extracting a pixel from the image that corresponds to the coordinate, and extracting a color, a transparency, a Z-depth or a surface normal of the extracted pixel.
|
