PROCESSING SYSTEM FOR CONNECTION LINE DISPLAY OF GRAPHIC ELEMENT CONNECTION DIAGRAM

摘要

PURPOSE:To display easy-to-see connection lines by deciding the layout of connection lines based on position information on all branched symbols connected with branching to a certain unbranched symbol and the position information on the unbranched symbol and also in consideration of the position relation among the branched symbols. CONSTITUTION:All position information on a unbranched symbol 23 and branched symbols 24-30 are inputted and a coordinate line 31 equal to the vertical coordinates of the symbol 23 is supposed as a reference line. Then data is produced to draw a connection line parallel to the reference line 32 between a branch symbol most distant from the symbols 24-30 and a point passed from a branch symbol nearest to the symbols 24-30 by a fixed distance. Then the vertical connection lines are drawn toward the line 31 from each end point of connection lines 32-35. These vertical connection lines end when they cross the horizontal connection lines. Finally a connection line 39 is drawn on the line 31 up to the end point of a vertical connection line 38 set at the most distant position.