在Image对象中缓存Graphics和Pen对象 #59
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目前还要考虑兼容 VC6，所以…… |
所以不能用智能指针？ |
改用普通指针实现了 |
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October 18, 2020 22:53
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目前所有的ege_系列函数都在内部创建一个Graphics对象，处理后释放。
这会影响图像绘制时的性能。
这个Patch在Image对象内部缓存了Graphics对象和Pen对象。ege_系列函数在绘图时会使用这两个缓存的对象，不在创建新对象。
为了节省资源，这两个对象使用延迟加载，只有在第一次使用时才会被创建。
为了提高速度，相关函数做成了inline的形式。
请大家审核吧