缩小向量
我的地形引擎有问题(使用 DirectX).
I've got a problem with my terrain engine (using DirectX).
我使用向量来保存细节块的顶点.当块的细节增加时,向量也会增加.
I'm using a vector to hold the vertices of a detail block. When the block increases in detail, so the vector does.
但是,当块减少其细节时,向量的大小不会缩小.
BUT, when the block decreases its detail, the vector doesn't shrink in size.
那么,我的问题是:有没有办法缩小向量的大小?我确实尝试过:
So, my question: is there a way to shrink the size of a vector? I did try this:
vertexvector.reserve(16);
推荐答案
通常的技巧是用空向量交换:
The usual trick is to swap with an empty vector:
vector<vertex>(vertexvector.begin(), vertexvector.end()).swap(vertexvector);
相关文章