Drawing apparatus with drawing data correction function

A drawing apparatus comprising:

• a data corrector for correcting drawing data representing a drawing pattern to be drawn in a quadrangular drawing area of a drawing subject, based on an ideal position and an actual position of said drawing area on said drawing subject, an actual outline being an outline of said drawing area in said actual position, and an ideal outline being an outline of said drawing area in said ideal position, said data corrector corrects said drawing data to be corrected drawing data, where a corrected outline being an outline of said drawing area represented by said corrected drawing data is a parallelogram which has two neighboring sides that are the same as the two neighboring sides of said actual outline, and said parallelogram having a shape closer to that of said ideal outline than said actual outline;
• and
• a pattern drawer that draws said drawing pattern based on said corrected drawing data.

A drawing data correcting method for correcting drawing data representing a drawing pattern to be drawn in a quadrangular drawing area of a drawing subject, based on an ideal position and an actual position of said drawing area on said drawing subject, an actual outline being an outline of said drawing area in said actual position, and an ideal outline being an outline of said drawing area in said ideal position, comprising:

• a data correcting step in which said drawing data is corrected to be corrected drawing data, where a corrected outline being an outline of said drawing area represented by said corrected drawing data is a parallelogram which has two neighboring sides that are the same as two neighboring sides of said actual outline, said parallelogram having a shape closer to that of said ideal outline than said actual outline.

A computer program product for correcting drawing data representing a drawing pattern to be drawn in a quadrangular drawing area of a drawing subject, based on an ideal position and an actual position of said drawing area on said drawing subject, an actual outline being an outline of said drawing area in said actual position, and an ideal outline being an outline of said drawing area in said ideal position, comprising:

• a data corrector that corrects said drawing data to be corrected drawing data, where a corrected outline being an outline of said drawing area represented by said corrected drawing data is a parallelogram which has two neighboring sides that are the same as two neighboring sides of said actual outline, said parallelogram having a shape closer to that of an ideal outline than said actual outline.