如何获取构成墙的每个立方体的坐标

我正在编码的3D房间中实现碰撞。我有一个迷宫类,在该类中,我在列表中将房间的边界设置为true,以保存有关多维数据集将在何处绘制的信息:

public class Labyrinth {

private boolean [][] wall = new boolean[21][21];
private boolean [][] ground = new boolean[21][21];

public Labyrinth() {
    super(); 
    this.initializeMap();

}   


private void initializeMap() {

    // inicializace zdí okolo celého bludiště
    for(int x = 0; x < 21; x=x+2) {
        wall[x][0] = true;
        wall[x][20] = true;
    }

    for(int y = 0; y < 21; y=y+2) {
        wall[0][y] = true;
        wall[20][y] = true;
    }

在渲染类中,我在墙设置为true的任何位置绘制立方体。看起来是这样的:

/ render labyrintu
    for(int i=0; i<21; i++) {
        for(int j=0; j<21; j++) {
            if(labyrinth.getWall()[i][j]) {                   
                  gl.glTranslatef((float)i, 0f, (float)j);
                  wallTexture.enable(gl);
                  wallTexture.bind(gl);
                  gl.glBegin(GL2.GL_QUADS);

                // Front Face
                  gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, 1.0f);
                  gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, 1.0f);
                  gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
                  gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);

                  // Back Face
                  gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, -1.0f);
                  gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, -1.0f);
                  gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, -1.0f);
                  gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, -1.0f);

                  // Top Face
                  gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, -1.0f);
                  gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
                  gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
                  gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, -1.0f);

                  // Bottom Face
                  gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, -1.0f, -1.0f);
                  gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, -1.0f, -1.0f);
                  gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, 1.0f);
                  gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, 1.0f);

                  // Right face
                  gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, -1.0f);
                  gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, -1.0f);
                  gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f( 1.0f, 1.0f, 1.0f);
                  gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f( 1.0f, -1.0f, 1.0f);

                  // Left Face
                  gl.glTexCoord2f(0.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, -1.0f);
                  gl.glTexCoord2f(1.0f, 0.0f); gl.glVertex3f(-1.0f, -1.0f, 1.0f);
                  gl.glTexCoord2f(1.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, 1.0f);
                  gl.glTexCoord2f(0.0f, 1.0f); gl.glVertex3f(-1.0f, 1.0f, -1.0f);
                  gl.glEnd();
                  gl.glTranslatef((float)-i, 0f, (float)-j);

            }                 
        }
    }

我现在想做的是使用AABB算法实现碰撞。为此,我需要知道我画的每个立方体的x,y,z坐标。然后我可以简单地将它们与摄像机的坐标进行比较。我想这样做:

    public static boolean checkCollision(ObjectBox a, ObjectBox b){
{
   //check the X axis
   if(Math.abs(a.getX() - b.getX()) < a.getSizeX() + b.getSizeX())
   {
      //check the Y axis
      if(Math.abs(a.getY() - b.getY()) < a.getSizeY() + b.getSizeY())
      {
          //check the Z axis
          if(Math.abs(a.getZ() - b.getZ()) < a.getSizeZ() + b.getSizeZ())
          {
             return true;
          }
      }
   }

   return false;
} 

我怎样才能得到每个立方体的坐标呢?