| 摘要 |
PURPOSE:To move easily a complicated picture, and also to execute easily registration and painting-out by dividing a polygon on a display picture into plural triangles, and therefore, moving each triangle to an indicated area, and executing an inter-area operation. CONSTITUTION:When a moving and arithmetic graphic processing of a graphic area is indicated by a light pen 2 and a keyboard 3, a movement and arithmetic control part 6 identifies two optional polygon areas of an original graphic A and an object graphic B by an indication of a processing part 5, divides them into plural triangle areas, data of both areas are read and calculated, the result is inputted to a graphic data storage part 7, and a data of an area of the graphics A, B is stored. This data is sent and received by a line or frame init to and from a bit map memory 9, and processed by the movement and arithmetic control part 6. An address controlling circuit 10 executes an access to the bit map memory 9 in accordance with an R/W address by an indication of a CPU4, executes a video control in accordance with a synchronizing signal 12 and displays it on a CRT1. In this way, a picture is processed easily. |
