Vector3d Properties 
The Vector3d type exposes the following members.
Name  Description  

IsUnitVector 
Gets a value indicating whether or not this is a unit vector.
A unit vector has length 1.
 
IsValid 
Gets a value indicating whether this vector is valid.
A valid vector must be formed of valid component values for x, y and z.
 
IsZero 
Gets a value indicating whether the X, Y, and Z values are all equal to 0.0.
 
Item 
Gets or sets a vector component at the given index.
 
Length 
Computes the length (or magnitude, or size) of this vector.
This is an application of Pythagoras' theorem.
If this vector is invalid, its length is considered 0.
 
MaximumCoordinate 
Gets the largest (both positive and negative) component value in this vector.
 
MinimumCoordinate 
Gets the smallest (both positive and negative) component value in this vector.
 
SquareLength 
Computes the squared length (or magnitude, or size) of this vector.
This is an application of Pythagoras' theorem.
While the Length property checks for input validity,
this property does not. You should check validity in advance,
if this vector can be invalid.
 
Unset 
Gets the value of the vector with each component set to RhinoMath.UnsetValue.
 
X 
Gets or sets the X (first) component of the vector.
 
XAxis 
Gets the value of the vector with components 1,0,0.
 
Y 
Gets or sets the Y (second) component of the vector.
 
YAxis 
Gets the value of the vector with components 0,1,0.
 
Z 
Gets or sets the Z (third) component of the vector.
 
ZAxis 
Gets the value of the vector with components 0,0,1.
 
Zero 
Gets the value of the vector with components 0,0,0.
