| 摘要 |
PURPOSE:To completely reproduce a picture by dividing previously a polygon during the formation of a picture while some pictures of the polygon in which boundary point trains are close are completely coated, however, the picture cannot be reproduced in an algorithm of a personal computer. CONSTITUTION:A converting part 1 from a summit train to the boundary point train of input data of a geometric picture converts picture data from a vector to a full dot as converting the summit train 31a into the boundary point train. When a map management part 2 detects an approaching point of the polygon in a check part 3 of a periphery point and transmits the data to a new boundary tracing part 4. In the converting part 5 from the boundary point train to the summit train, the output from the boundary point train data to the summit train data of the polygon divided in the new boundary tracing part 4 is formed. A memory 7 stores the data during the processing of graphic data or after the completion thereof. |
