A.A bsolute CSYS
B.XAxis,YAxis,Origin
C.CSYS of Object
D.Plane and Vector
A.观察坐标系的原点可以是世界坐标系中的任意点
B.观察坐标系中的z轴定义为视线方向的单位向量
C.观察坐标系中的y轴定义为观察域底部指向顶部方向的单位向量
D.观察坐标系中的x轴定义为与t=y×z同方向的单位向量
A.XAxis,YAxis
B.XAxis,YAxis,Origin
C.ZAxis,X—Point
D.Plane and Vector
A.X Axis,Y Axis
B.X Axis,Y Axis,Origin
C.Z Axis,X—Point
D.Plane and Vector
A.Z Axis,X—Point
B.X Axis,Y Axis,Origin
C.X Axis,Y Axis
D.Plane and Vector
A.Z Axis,X—Point
B.X Axis,Y Axis,Origin
C.X Axis,Y Axis
D.Plane and Vector
A.Absolute CSYS
B.X Axis,Y Axis,Origin
C.CSYS of Object
D.Plane and Vector
A.X Axis,Y Axis
B.X Axis,Y Axis,Origin
C.Z Axis,X—Point
D.Plane and Vector
A.Absolute CSYS
B.XAxis,Y Axis,Origin
C.CSYS of Object
D.Offset from CSYS