读取标准obj文件，实现服装模型的三维显示，基于虚拟球的旋转平移缩放变换，三维漫游，包含局部变形和碰撞检测代码。-Read the standard obj file, to achieve three-dimensional display of the garment model, based on the virtual ball of the rotation translation zoom transformation, three-dimensional roaming, incl