我正在尝试阅读以下文件(原始文件中没有评论):
四边形
4 4 // 顶点总数和三角形总数
0.693361 0.693361 0.693361 // 顶点坐标
0.693361 -0.693361 -0.693361
-0.693361 -0.693361 0.693361
-0.693361 0.693361 -0.693361
3 1 2 3 // 要显示的三角形(前面的 3 指定是三角形)
3 0 3 2
3 0 1 3
3 0 2 1
我正在尝试使用动态数组来做到这一点,因为我需要打开其他文件并且因为我正在使用顶点数组来绘制到屏幕上。
我得到了正确的第一个值(根据上面的文件,vertcount 和 tricount 分别为 4 和 4),但之后我做错了。
这是代码:
无效的主要(){
struct Vertex // Vertex Structure
{
float x,y,z;
};
struct Triangle // Triangle Structure
{
struct Vertex vert1, vert2, vert3;
};
int vertcount=0; //total number of vertices
int tricount=0; // number of triangles to display
int v=0; //var to store index value of each vertex
int t=0; //var to store index value of each triangle
struct Vertex InstVertex; // Instantiation of Vertex defined as struct with 3 floats to store coordinates
struct Triangle InstTriangle; // Instantiation of the Triangle STRUCT
long filesize;
char buffer;
struct Vertex vertArray[v];
struct Triangle triArray[t];
FILE * pmesh; // pointer to the mesh file to be opened
pmesh = fopen ("/Users/.../tetra.tri","r"); // Tries to access the file specified. TO BE CHANGED ----> Dialaog window with browse for file function
/********** 读取文件并存储值 **********/
fscanf(pmesh, " %i %i ", &vertcount, &tricount); //read from file and assign the first two values: number of Vertices and Triangles
vertArray[v] = malloc(vertcount*(sizeof(struct InstVertex))); // Array of vertexes - space allocated = total number of vertices * the size of each Vertex
triArray[t] = malloc(tricount*(sizeof(struct InstTriangle))); // Array of triangles
int i=0, j=0; // Temp variables for for loops
for (i=0; i<=vertcount; i++){
fscanf(pmesh, "%d %d %d", &InstVertex.x, &InstVertex.y, &InstVertex.z); //read file and store coordinates in
vertArray[v]=InstVertex;
v++;
}
int check=0;
for (j=0; j<=tricount; j++){
fscanf(pmesh, "%i %i %i %i", &check, &InstTriangle.vert1, &InstTriangle.vert2, &InstTriangle.vert3);
triArray[t]=InstTriangle;
t++;
}
fclose(pmesh);
/****************************************/
glutMainLoop();
return 0;
}
在我犯的错误中,还有分配数组内存的方式,因为我没有得到正确的值。
我在读取循环和数组声明中找不到错误。这也是在数组中存储值的正确方法吗?
提前谢谢你,瓦莱里奥