Vector3dMultiply Operator (Vector3d, Vector3d) |

Multiplies two vectors together, returning the dot product (or inner product).
This differs from the cross product.

**Namespace:** Rhino.Geometry**Assembly:** RhinoCommon (in RhinoCommon.dll) Version: 5.1.50000.0 (5.0.20693.0)

Syntax public static double operator *(
Vector3d vector1,
Vector3d vector2
)

Public Shared Operator * (
vector1 As Vector3d,
vector2 As Vector3d
) As Double

#### Parameters

- vector1
- Type: Rhino.GeometryVector3d

A vector. - vector2
- Type: Rhino.GeometryVector3d

A second vector.

#### Return Value

Type:

Double
A value that results from the evaluation of v1.X*v2.X + v1.Y*v2.Y + v1.Z*v2.Z.

This value equals v1.Length * v2.Length * cos(alpha), where alpha is the angle between vectors.

See Also