| 摘要 |
PURPOSE:To speedily output a hidden-line erased result by adopting algorithm conscious of relation between blocks or relation between a line under calculation and the block and saving data, which are converted for hidden-line erasure, on a shared memory. CONSTITUTION:A data converting means 1-1 fetches three-dimensional data, to which the hidden line erasure is executed, and the data are put in order and converted for each block. Then, the converted data are accumulated in a shared memory 1-2. A data set part 1-3 sets the data to the memory 1-2 according to prescribed specification. A hidden line erasure calculating means 1-4 adopts the algorithm conscious of the relation between the blocks or the relation between the line under the calculation and the block by using the data on the memory 1-2. The hidden line erasing calculation is executed and the calculated result is successively displayed as two-dimensional data on the screen of a displaying and registering part 1-5. The data converted for the hidden line erasion are saved on the shared memory 1-2 and time is prevented from being wasted. Then, the result of the hidden line erasure is speedily outputted. |
