Patent ID: 7916145
Filing Date: 2011-03-29
Classification: G06T,G09G

Abstract:
1. A drawing apparatus equipped with the function of displaying a dotted line in gradation, comprising: a reference image storage unit for storing a reference dotted line image for drawing the dotted line; a judgment unit for judging whether or not a pixel to be drawn exists within a fixing section of a dotted line pattern; a drawing unit for drawing a pixel within the fixing section of the dotted line pattern by fixing it to pixel data other than that of the reference dotted line image corresponding to a beginning point of the fixing section if the pixel to be drawn is judged, by the judgment unit, to exist within the fixing section of the dotted line pattern; and a dummy apex coordinate calculation unit for calculating a starting dummy apex coordinate and an ending dummy apex coordinate when drawing the dotted line with a crook line part by using a plurality of segments, wherein the starting dummy apex coordinate is obtained by adding a given value to a first coordinate corresponding to a starting edge part of a segment, wherein the ending dummy apex coordinate is obtained by subtracting the given value from a second coordinate corresponding to an ending edge part of the segment, wherein the judgment unit judges whether or not the pixel to be drawn exists within one of a first fixing section between the first coordinate and the starting dummy apex coordinate and a second fixing section between the second coordinate and the ending dummy apex coordinate.