[MOgre] Grid 생성 함수 (펌)

private void CreateGrid(int numcols, int numrows, float unitsize)
{
    // 생성
    ManualObject grid = sceneMgr.CreateManualObject("grid");

    grid.Begin("BaseWhiteNoLighting", RenderOperation.OperationTypes.OT_LINE_LIST);

    float width = (float)numcols * unitsize;
    float depth = (float)numrows * unitsize;
    Vector3 center = new Vector3(-width / 2.0f, 0, -depth / 2.0f);

    for (int i = 0; i < numrows; ++i)
    {
        Vector3 s, e;
        s.x = 0.0f;
        s.z = i * unitsize;
        s.y = 0.0f;

        e.x = width;
        e.z = i * unitsize;
        e.y = 0.0f;

        grid.Position(s + center);
        grid.Position(e + center);
    }
    grid.Position(new Vector3(0.0f, 0.0f, numrows * unitsize) + center);
    grid.Position(new Vector3(width, 0.0f, numrows * unitsize) + center);

    for (int i = 0; i < numcols; ++i)
    {
        Vector3 s, e;
        s.x = i * unitsize;
        s.z = depth;
        s.y = 0.0f;

        e.x = i * unitsize;
        e.z = 0.0f;
        e.y = 0.0f;

        grid.Position(s + center);
        grid.Position(e + center);
    }
    grid.Position(new Vector3(numcols * unitsize, 0.0f, 0.0f) + center);
    grid.Position(new Vector3(numcols * unitsize, 0.0f, depth) + center);
    grid.End();

    sceneMgr.RootSceneNode.AttachObject(grid);
}