C - 如何传递变量二维数组作为参数

Question

我想传递一个二维数组作为参数。问题是二维数组的大小总是变化的。所以我不能写类似 myfunction(int a[2][5]);

我有一个包含大量 3D 坐标的头文件。 例如:

float someArray[][3] = {{0.0,1.0,-2.0},{-1.0,1.0,-2.0},{-1.0,1.0,0.0},{0.0,1.0,0.0},
            {-1.0,0.75,-2.0},{-1.0,1.0,-2.0},{-1.0,1.0,0.0},{-1.0,0.75,0.0},
            {0.0,0.75,-2.0},{0.0,1.0,-2.0},{0.0,1.0,0.0},{0.0,0.75,0.0}, 
            {0.0,0.75,-2.0},{-1.0,0.75,-2.0},{-1.0,0.75,0.0},{0.0,0.75,0.0},
            {0.0,0.75,-2.0},{-1.0,0.75,-2.0},{-1.0,1.0,-2.0},{0.0,1.0,-2.0},
            }; 


void drawVertex(const float **vertex, int numberVertex, int shape)
{
    int i;

    glPushMatrix();
    switch(shape)
    {
        case 0: glBegin(GL_LINES); break;
        case 1: glBegin(GL_POLYGON); break;
        default: break;
    }

    for(i=0;i<numberVertex;i++)
    {
        glVertex3fv(vertex[i]);
    }
    glEnd();
    glPopMatrix();

}

我尝试过的函数调用:

这些只是崩溃(核心转储)

drawVertex(someArray, 6,1);
drawVertex(*someArray, 6,1);

我应该修改函数drawVertex()的参数吗？我尝试了很多事情，但似乎没有任何效果。

Answer 1

如果需要数组，就必须使用数组。指针到指针与数组关系不大。将函数更改为:

void drawVertex(const GLfloat vertex[][3], int numberVertex, int shape)

或者更好:

void drawVertex(int numberVertex, const GLfloat vertex[numberVertex][3] int shape)