Character Vectorization in Pattern of Computerized Quilting

TrueType fonts are used in the character vectorization in the pattern of computerized quilting. Graphics information of characters outline is described with beeline and quadratic B-spline curves of TrueType fonts. By utilizing Windows API functions, setting retrieving the outline for a character and judging the line-type, computing the quadratic B-spline curves with recursion formulas, the coordinate for describing a character's outline is obtained and the character vectorization is achieved. Finally, the coordinate transform is implemented in AutoCAD and the quilting lines of characters pattern are obtained by isometric process.