# 线段示例 # 格式:{x,y,z}-{x,y,z} # 坐标轴 {0,0,0}-{100,0,0} {0,0,0}-{0,100,0} {0,0,0}-{0,0,100} # 立方体 {50,50,50}-{150,50,50} {150,50,50}-{150,150,50} {150,150,50}-{50,150,50} {50,150,50}-{50,50,50} {50,50,150}-{150,50,150} {150,50,150}-{150,150,150} {150,150,150}-{50,150,150} {50,150,150}-{50,50,150} {50,50,50}-{50,50,150} {150,50,50}-{150,50,150} {150,150,50}-{150,150,150} {50,150,50}-{50,150,150}