| 摘要 |
PURPOSE:To obtain quantized projection with high accuracy in a short time by applying operation to a projected point until both end points of a divided line segment have the contiguous performance, and writing the end points to a coordinate plane. CONSTITUTION:An operation section 1 executes a series of a processings. A projection quantizing section 2 operates functions g(t), h(t) of a curve set externally in response to a specified variable tn or the like to output a quantized coordinate of an end point Pn. An adjacency check section 3 discriminates the contiguous performance based on the coordinate of the end point Pn from the projection quantizing section 2. An intermediate point generating section 4 calculates the variable of the intermediate point based on the result of check of contiguous performance from the adjacency check section 3. A stack memory 5 stores variables t1, t2 of the end point of each line segment, and the end point Pn from the projection quantized section 2 is written in the memory 6 corresponding to the quantized coordinate plane PLN. Variables t1, t2 of the points P1, P2 of a line segment l1 are set initially to a stack memory 5. |
