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消隐与Z-Buffer 使用缓冲器记录物体表面在屏幕上投影所覆盖范围内的全部像素的深度值,依次访问屏幕范围内物体表面所覆盖的每一像素,用深度小(深度用z值表示,z值小表示离视点近)的像素点颜色替代深度大的像素点颜色可以实现消隐,称为深度缓冲器算法.深度缓冲器算法也称为Z-Buffer算法,在物体空间内不对物体表面的可见性进行检测,在图像空间中根据每个像素的深度值确定最终绘制到屏幕的物体表面上各个像素的颜色. 下面的例子中从读入一个简单的8个顶点的立方体STL模型,用vtkSelectVisibl…
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https://code.google.com/codejam/contest/544101/dashboard#s=p0     Problem In the exciting game of Join-K, red and blue pieces are dropped into an N-by-N table. The table stands up vertically so that pieces drop down to the bottom-most empty slots in…
Problem A permutation of size N is a sequence of N numbers, each between 0 and N-1, where each number appears exactly once. They may appear in any order. There are many (N factorial, to be precise, but it doesn't matter in this problem) permutations…
https://www.swansontec.com/sregisters.html I wrote this article for an online magazine called Scene Zine. Scene Zine caters to the Demo Scene, which is an digital art community dedicated to pushing the limits of computers through a mix of music, art,…
Problem I: Ingenious Lottery Tickets Your friend Superstitious Stanley is always getting himself into trouble. This time, in his Super Lotto Pick and Choose plan, he wants to get rich quick by choosing the right numbers to win the lottery. In this lo…
求有限集传递闭包的 Floyd Warshall 算法(矩阵实现) 其实就三重循环.zzuoj 1199 题 链接 http://acm.zzu.edu.cn:8000/problem.php?id=1199 Problem B: 大小关系 Time Limit: 2 Sec  Memory Limit: 128 MBSubmit: 148  Solved: 31[Submit][Status][Web Board] Description 当我们知道一组大小关系之后,可判断所有关系是否都能成立…
Gson解析JSON字符串时出现了下面的错误: No-args constructor for class X does not exist. Register an InstanceCreator with Gson for this type to fix this problem. 解决的办法是把对应的Class改成静态类.…
C - NP-Hard Problem Crawling in process... Crawling failed Time Limit:2000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 688C uDebug Description   Input   Output   Sample Input   Sample Output   Hint…