| 摘要 |
<p>Stroke display apparatus generates symbols or characters on a display screen and permits dynamic rotation or translation of those characters without placing a computation burden on the host processor. The characters are represented as a series of connected line segments, or blank segments, each having a characteristic direction or vector angle. Each of the line segments are generated by successively adding incremental DELTA x and DELTA y steps to an x,y position until the desired length is achieved. The character is rotated by adding a predetermined offset angle to each characteristic vector angle and then by converting the rotated vector angle into incremental DELTA x and DELTA y steps. Character translation is accomplished by including an extra, typically blanked, line segment command before the character is drawn.</p> |
