四叉树算法ＶＣ8.0实现，包括创建四叉树，产生随机地图，对地图进行四叉树分解-Quad-tree algorithm VC8.0 achieved, including the creation of quadtrees to generate random maps, maps of the four-tree decomposition

实现了地形图像等的四叉树分层，根据图像的梯度和稠密分布进行分层处理。-Realized images of the terrain quadtree hierarchical, according to the image gradient and the dense distribution of slicing.