ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / Coordinate2D Structure / DotProduct(Coordinate2D) Method
The input Coordinate2D to use in the dot product.
Example Version

DotProduct(Coordinate2D) Method
Calculates the dot product of this Coordinate2D and another Coordinate2D. Vector dot product is used.
Syntax
public double DotProduct( 
   Coordinate2D other
)

Parameters

other
The input Coordinate2D to use in the dot product.

Return Value

A double representing the dot product of this Coordinate2D and the input Coordinate2D. The dot product is the sum of multiplying corresponding components of each Coordinate2D.
Example
2D Vector Operations
Coordinate2D v = new Coordinate2D(0, 1);
// v.Magnitude = 1

Coordinate2D other = new Coordinate2D(-1, 0);
double dotProduct = v.DotProduct(other);
// dotProduct = 0

Coordinate2D w = v + other;
// w = (-1, 1)

w += other;
// w = (-2, 1)

w -= other;
// w = (-1, 1)

w = v;
w.Rotate(Math.PI, other);
// w = (-2, -1)

w = other;

w.Scale(-4);
// w = (4, 0)
// w.Magnitude = 4

w.Move(-1, 4);
// w = (3, 4)
// w.Magnitude = 5

w.Move(-6, -1);
Tuple<double, double> components = w.QueryComponents();
// components = (-3, 3)
// w.Magnitude = 3 * Math.Sqrt(2)

Coordinate2D unitVector = w.GetUnitVector();
// w = (-Math.Sqrt(2) / 2, Math.Sqrt(2) / 2)
// w.Magnitude = 1


w.SetComponents(3, 4);
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.2 or higher.
See Also