Switch法读取字库



内含小字库创建方法、对应的字模提取方式和字库使用源代码。



原理：通过额外编制一个Switch结构的函数，给出区位码，函数返回字模在数组中位置。建立字库的时候，把区位码作为case值，把字模位置作为return值，写入函数。这其实是查找法的变形。



优点：

额外内存占用小。

字模位置和区位码相关，使用方便。



缺点：

速度慢，消耗CPU资源，每读取一个字模都必须调用函数。

可以支持汉字数量受case 条数限制，部分编译器支持的case条目少-Switch method to read font



Contains a small font creation method, the corresponding matrix extraction methods and fonts to use source code.



Principle: The additional function of the preparation of a Switch structure given area code, the function returns the location in the array matrix. Build character, when the area code as the case values​ ​ , the matrix position as a return value, the write functions. This is actually a method to find the deformation.



Advantages:

Additional memory footprint small.

Matrix related to the location and area code, easy to use.



Disadvantages:

Slow, consuming CPU resources, each read a matrix must call the function.

Can support the number of Chinese characters by the case of the limit, part of the compiler support case less entries