ArcGIS Pro 3.4 API Reference Guide
ArcGIS.Core.Geometry Namespace / Coordinate3D Structure / Rotate Method
The angle defining the rotation.
The axis around which the Coordinate3D is rotated.
Example Version

Rotate Method (Coordinate3D)
Rotates the Coordinate3D around an axis defined by another Coordinate3D. The angle is in radians.
Syntax
public void Rotate( 
   double angle,
   Coordinate3D axis
)

Parameters

angle
The angle defining the rotation.
axis
The axis around which the Coordinate3D is rotated.
Remarks
The Coordinate3D is rotated a given input angle measured in radians around the specified axis defined by the input Coordinate3D. To rotate a Coordinate3D in a given plane defined by two Coordinate3D, use the CrossProduct of those coordinates as the axis of rotation.
Example
Vector Operations
// Easy 3D vectors
Coordinate3D v = new Coordinate3D(0, 1, 0);
// v.Magnitude = 1

Coordinate3D other = new Coordinate3D(-1, 0, 0);
// other.Magnitude = -1

double dotProduct = v.DotProduct(other);      // dotProduct = 0

Coordinate3D crossProduct = v.CrossProduct(other);
// crossProduct.X = 0
// crossProduct.Y = 0
// crossProduct.Z = 1

Coordinate3D addVector = v.AddCoordinate3D(other);
// addVector.X = -1
// addVector.Y = 1
// addVector.Z = 0

// Rotate around x-axis
Coordinate3D w = v;
w.Rotate(Math.PI, other);
// w.X = 0
// w.Y = -1
// w.Z = 0

w.Scale(0.5);
// w.X = 0
// w.Y = -0.5
// w.Z = 0

w.Scale(-4);
// w.X = 0
// ww.Y = 2
// w.Z = 0
// w.Magnitude = 2

w.Move(3, 2, 0);
// w.X = 3
// w.Y = 4
// w.Z = 0
// w.Magnitude = 5


Coordinate3D emptyVector = new Coordinate3D();
// emptyVector = (0, 0, 0)
emptyVector.SetEmpty();
// emptyVector = (Nan, Nan, Nan)

Coordinate3D c1 = new Coordinate3D(2, 3, 4);
Coordinate3D c2 = new Coordinate3D(9, -1, 3);

var result_add = c1 + c2;
// result_add = (11, 2, 7)
var result_sub = c1 - c2;
// result_sub = (-7, 4, 1)

var b = result_sub != result_add;
// b = true

result_add = emptyVector + c1;
// result_add = (Nan, Nan, Nan)

b = result_add == emptyVector;
// b = true
Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3 or higher.
See Also