C – 指向数组的指针 – 指针数组

假设我在头文件中有以下变量 –

int numberOfLinePoints;
D3DXVECTOR3* line;   //confused as to what it is

然后在实现C文件中我将它们初始化如下 –

//both initialized in constructor
numberOfLinePoints = 25;
line = new D3DXVECTOR3[numPoints];   //array of pointers?

我的行变量现在代表什么？

据我所知,通过读取stackoverflow上的链接,它应该代表一个指针数组.然后,我读了以下内容……

(1)Pointers for Beginners

…其中(A)指针数组和(B)指向数组的指针都在讨论中.这让我感到困惑,因为它们似乎都有类似的作用.

事实上,我在一个单独的位置定义我的指针到我分配的位置(正确吗？)它们似乎是我的困惑所源自的地方.我是否正确,这是D3DXVECTOR3对象的指针数组？

完成 – 如果变量行保存有关一个线段的信息,我将如何创建一个线段数组？我目前有以下 –

//HEADER FILE
int numberOfLineSegments;
D3DXVECTOR3** lineCollection;   //array of pointers - each of which
                                //points to an array of pointers?
//CPP FILE
numberOfLineSegments = 8;                            //constructor
for(i = 0; i < numberOfLineSegments; i++)            //initialization
{                                                    //and allocation  CORRECT?
   lineCollection[i] = new D3DXVECTOR*[numPoints];   //of memory for     Y/N
}                                                    //lineCollection

VOID createLineSegments(startPoint,endPoint) //could return array instead
{
//pseudo to generate one line segment
while != numberOfLinePoints
line[sentinel++] = interpolate(startPoint,endPoint,time_T)

//pseudo to generate array of line segments
while != numberOfLines
lineCollection[sentinel++] = line
}

任何帮助深表感谢.