Title:
GRAPHIC DISPLAY DEVICE AND PROGRAM
Document Type and Number:
Japanese Patent JP2004294689
Kind Code:
A
Abstract:
To identify and display lines, whose length is equal and angles whose angles are equal in a graphic display device.
In the graphic display device 10, a CPU 1 calculates the length of a drawn line; extracts a line that has already been displayed at a display section 2 and has the same length; and adds the same identification mark for displaying at the display section 2. Additionally, a straight line, crossing a drawn straight line, is extracted; the crossing angle of the two straight lines is calculated; a crossing angle that has been already displayed at the display section 2 and has the same angle is extracted; and the same identification mark is added for displaying at the display section 2.
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Inventors:
SATO TOMOAKI
FUKAYA HIDEYORI
SUZUKI KENTARO
FUKAYA HIDEYORI
SUZUKI KENTARO
Application Number:
JP2003085841A
Publication Date:
October 21, 2004
Filing Date:
March 26, 2003
Export Citation:
Assignee:
CASIO COMPUTER CO LTD
International Classes:
G09B5/02; G06T11/80; G09B23/04; G09G5/36; (IPC1-7): G09B23/04; G06T11/80; G09B5/02; G09G5/36
Attorney, Agent or Firm:
Hiroshi Arafune
Yoshio Arafune
Yoshio Arafune