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

Add 
Sums up two vectors.
(Provided for languages that do not support operator overloading. You can use the + operator otherwise)  
AreOrthogonal 
Test whether three vectors describe an orthogonal axis system.
All vectors must be mutually perpendicular this to be the case.
 
AreOrthonormal 
Test whether three vectors describe an orthogonal, unit axis system.
All vectors must be mutually perpendicular and have unit length for this to be the case.
 
AreRighthanded 
Test whether three vectors describe a righthanded, orthogonal, unit axis system.
The vectors must be orthonormal and follow the righthand ordering; indexfinger=x,
middlefinger=y, thumb=z.
 
CompareTo  
CrossProduct 
Computes the cross product (or vector product, or exterior product) of two vectors.
This operation is not commutative.  
Divide 
Divides a Vector3d by a number, having the effect of shrinking it.
(Provided for languages that do not support operator overloading. You can use the / operator otherwise)  
EpsilonEquals 
Check that all values in other are within epsilon of the values in this
 
Equals(Object) 
Determines whether the specified System.Object is a Vector3d and has the same values as the present vector.
(Overrides ValueTypeEquals(Object).)  
Equals(Vector3d) 
Determines whether the specified vector has the same value as the present vector.
 
GetHashCode 
Computes the hash code for the current vector.
(Overrides ValueTypeGetHashCode.)  
GetType  Gets the Type of the current instance. (Inherited from Object.)  
IsParallelTo(Vector3d) 
Determines whether this vector is parallel to another vector, within one degree (within Pi / 180).
 
IsParallelTo(Vector3d, Double) 
Determines whether this vector is parallel to another vector, within a provided tolerance.
 
IsPerpendicularTo(Vector3d) 
Test to see whether this vector is perpendicular to within one degree of another one.
 
IsPerpendicularTo(Vector3d, Double) 
Determines whether this vector is perpendicular to another vector, within a provided angle tolerance.
 
IsTiny 
Uses RhinoMath.ZeroTolerance for IsTiny calculation.
 
IsTiny(Double) 
Determines whether a vector is very short.
 
Multiply(Double, Vector3d) 
Multiplies a vector by a number, having the effect of scaling it.
(Provided for languages that do not support operator overloading. You can use the * operator otherwise)  
Multiply(Vector3d, Vector3d) 
Multiplies two vectors together, returning the dot product (or inner product).
This differs from the cross product.
(Provided for languages that do not support operator overloading. You can use the * operator otherwise)  
Multiply(Vector3d, Double) 
Multiplies a vector by a number, having the effect of scaling it.
(Provided for languages that do not support operator overloading. You can use the * operator otherwise)  
Negate 
Computes the reversed vector.
(Provided for languages that do not support operator overloading. You can use the  unary operator otherwise)  
PerpendicularTo 
Sets this vector to be perpendicular to another vector.
Result is not unitized.
 
Reverse 
Reverses this vector in place (reverses the direction).
If this vector is Invalid, no changes will occur and false will be returned.  
Rotate 
Rotates this vector around a given axis.
 
Subtract 
Subtracts the second vector from the first one.
(Provided for languages that do not support operator overloading. You can use the  operator otherwise)  
ToString 
Returns the string representation of the current vector, in the form X,Y,Z.
(Overrides ValueTypeToString.)  
Transform 
Transforms the vector in place.
The transformation matrix acts on the left of the vector; i.e., result = transformation*vector  
Unitize 
Unitizes the vector in place. A unit vector has length 1 unit.
An invalid or zero length vector cannot be unitized.  
VectorAngle(Vector3d, Vector3d) 
Compute the angle between two vectors.
This operation is commutative.  
VectorAngle(Vector3d, Vector3d, Plane) 
Computes the angle on a plane between two vectors.
 
VectorAngle(Vector3d, Vector3d, Vector3d) 
Computes the angle of v1, v2 with a normal vector.
