three_vector - construct a vector in 3D space.

Calling Sequence

[tv]=three_vector( x, y, z)

Parameters

• x : the projection length of the vector in X direction.
• y : the projection length of the vector in Y direction.
• z : the projection length of the vector in Z direction.
• tv : the output 3D vector.

Description

construct a vector in 3D normal space.

Examples

	tp=three_point(0,0,0);
	tv_x=three_vector(1,0,0);
	tv_y=three_vector(0,1,0);
	tv_z=three_vector(0,0,1);
	tf=three_frame(tp,tv_x,tv_y,tv_z);
 

Author

Chen jingyuan, Gan guangyong (IAPCM, Beijing,China.)

See Also

three_point ,   three_frame ,   three_translation ,   three_rotation ,   three_reflection ,