High-performance vector font library display method based on VXWorks system

Abstract

The present invention provides a high-performance vector font library display method based on a VXWorks system. The method comprises the following steps: 1) initializing FreeType; 2) performing texture initialization; 3) reading a vector font library file stored in a file system into a memory; 4) determining whether character cache data exists, and if yes, displaying the character cache data as characters via texture mapping, and if no, parsing font vector information into lattice data according to the vector font library file, and displaying the well-parsed lattice data as characters via texture mapping; and 5) determining whether a display process ends, if yes, releasing a memory texture space, and if no, continuing executing the step until the display ends. Based on an OpenGL graphic library based on VXWorks and in combination with TrueType, the high-performance vector font library display method based on a VXWorks system is high in drawing efficiency, good in display effect, capable of supporting zooming, rotating and translation and good in anti-aliasing effects.

Description

technical field [0001] The invention belongs to the graphic display field of an airborne embedded computer, and relates to a font display method, in particular to a VXWorks operating system high-performance vector font display method. Background technique [0002] Most of the airborne embedded computer devices use the VxWorks operating system, which has poor support for graphic display, especially Chinese character display. At present, the general solution is to use dot-matrix Chinese character library for display. This method solves the problem of Chinese character display to a certain extent, but has the disadvantages of large font file size, poor versatility, low character drawing efficiency, and poor display effect. Contents of the invention [0003] In order to solve the above-mentioned technical problems existing in the background technology, the present invention provides a VXWorks operating system with high drawing efficiency, good display effect, and support for z...

AI Technical Summary

Problems solved by technology

[0002] Airborne embedded computer equipment mostly uses the VxWorks operating system, which has poor support for graphic display, especially Chinese character display

At present, the general solution is to use the dot matrix Chinese character library for display. This method solves the problem of Chinese character display to a certain extent, but there are disadvantages such as large font file size, poor versatility, low character drawing efficiency, and poor display effect.

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