Qt-based Pattern Processing Techniques In Applied Research, Computerized Embroidery Machine

Pattern is the basic of Computerised Embroidery Machine precisely completing to doembroidery. It is treated with Qt by Cross-Platform in Linux OS. After the analysis andresearch of the pattern format, on the premise of assuring the raw data not changed, thispaper accomplishs to show dynamic pattern picture in stable base areas in the method ofsolving the center point of the pattern and transforming Qt painting device coordinate, nextfrom image transformation of view, elaborate pattern zoom principle, enlarge pattern bymeans of special needle-split, consider to embroidery efficiency and quality, the proportionof zoom which is completed respectively is 0.5 and 2. Then discussing to rotate pattern,rotating angle from 0 to 89 is researched firstly in order to progress to rotate any angle tolower difficulty, and accumulation error is compensated by repaired algorithm. Later theprocess of cutting out and joining together pattern is elaborated. At last, it completes thedesign of graphically man-machine interface about disk management and patternmanagement model. It has been proved that all success to achieve the anticipated result.