小编use*_*333的帖子

我应该写一些haskell程序,但我真的不知道从哪里开始.如果你能给我一些资源来阅读或解释我的问题,我将非常感激.我确信这是一个非常业余的东西,但我真的需要一个起点.

data DFA q o                =  DFA (q -> o -> q) q [q]
data NFA q o                =  NFA (q -> o -> [q]) [q] [q]
-- I really realy don't understand the declarations here
-- I can guess that q is somewhat related to Q and o to E, but don't get what it really means

data Q                      =  Q0 | Q1 | Q2
                               deriving (Eq, Enum, Bounded)

data E                      =  A | B


-- what does n1 …

有人可以解释如何为三角形网格生成索引吗？

该程序为球体对象生成顶点数组,并生成索引以使用glDrawElements方法绘制.

我不明白这些索引如何与堆栈和切片相关.

我是openGL的新手,我花了很多时间试图理解这段代码是如何工作的.

提前致谢.:)

    int stacks = 40, slices = 40; // stacks = no. of Latitude lines,
                                  // slices = no. of Longitude lines

    double deltaLong = PI * 2 / slices;
    double deltaLat = PI / stacks;

    // Generate vertices coordinates, normal values, and texture coordinates
    numVertices = (slices + 1) * (stacks - 1) + 2;
    vertices = new float[numVertices * 3];
    normals = new float[numVertices * 3];
    textures = new float[numVertices * 2];

    // North …