DISPLAY PROCESSING SYSTEM FOR HATCHING PATTERN

摘要

PURPOSE:To prevent a pattern from being shifted due to the movement of a window by controlling the hatching pattern of a graphic in the window by a boundary whose relative position is unchangeable even if the window is moved. CONSTITUTION:A graphic processing part 20 forms logical coordinates fixing a proper relative position on the display position of the window and holds and controls the logical coordinates so that the relative position of the logical coordinates is not changed even if the window is moved. In the hatching processing of a graphic in the window, the original pattern starting position of a hatching pattern is determined by a boundary based upon the logical coordinates and hatching specifying operation is transferred to a coordinate transformation part 21 together with the positional information of the logical coordinates. The transformation part 21 transforms the logical coordinate value of the hatching specifying information into physical coordinate value and transfers the transformed value to the hatching processing part 3. The hatching processing part 3 displays the hatching display information on a display part 2.